MEB-3810N

INSTRUCTION MANUAL

COVERI
 CONTENTS

1. SPECIFICATIONS..............................................1 6-4. Performing re-sewing................................................ 46

6-5. Performing threading................................................ 47
2. NAME OF EACH COMPONENT.......................2 6-6. How to use the counter............................................. 47
3. INSTALLATION..................................................3 6-7. When dropping of the knife is temporarily not
3-1. Table..............................................................................3 desired...................................................................... 48
(1) Drawing of the stand........................................................ 3 6-8. Changing the operation mode.................................. 48
(2) Drawing of the table(Table-fixed type)........................... 4 6-9. Changing procedure of the sewing pattern............. 50
(3) Drawing of the table (Semi-sunken type)....................... 5 6-10. Confirming the pattern shape................................. 50
3-2. Installing the control box............................................ 6 7. SETTING PROCEDURE OF THE SEWING
3-3. Installing and connecting the power switch............. 6 DATA................................................................51
3-4. Taking out the sewing machine.................................. 8
7-1. Setting the knife No................................................... 52
3-5. Installing the sewing machine.................................... 9
7-2. Setting the cut length................................................ 52
(1) In the case of the table-fixed type machine head......... 9
7-3. Setting the cut-before/cut-after knives.................... 53
(2) In the case of the semi-sunken type machine head....11
7-4. Setting the number of stitches of the parallel
3-6. Raising and returning the sewing machine............. 16 section....................................................................... 53
3-7. Installing the poly oiler.............................................. 19 7-5. Setting the number of stitches of the eyelet........... 53
3-8. Installing the operation panel................................... 19 7-6. Setting the cut space................................................. 54
3-9. Installing the regulator and the manifold................ 20 7-7. Setting the eyelet space............................................ 54
3-10. Connecting the cords.............................................. 22 7-8. Knife position compensation.................................... 54
3-11. Handling the cords................................................... 23 7-9. Number of stitches of sewing end compensation.. 55
3-12. Installing the foot pedal switch (optional)............. 24 7-10. Turning angle compensation.................................. 55
3-13. Connecting the air supply....................................... 25 7-11. Turning angle compensation at the parallel sec-
(1) Connecting the regulator and the manifold................. 25 tion.............................................................................55
(2) Connecting the air tubes............................................... 26 7-12. Compensation of eyelet in lateral direction.......... 56
3-14. Installing the air hose.............................................. 27 7-13. Compensation of eyelet in longitudinal direction.56
3-15. Cautions for the compressed air supply (source 7-14. Compensation of eyelet, left in longitudinal
of supply air) facility.................................................. 28 direction.................................................................... 56
3-16. Installing the thread stand...................................... 29 7-15. Compensation of left parallel section of a but-
3-17. Installing the thread guides.................................... 30 tonhole...................................................................... 57
3-18. Installing the eye protection cover and the 7-16. Compensation of cutting space, left...................... 57
finger guard.............................................................. 31 7-17. Setting the needle throwing width of the
3-19. Installing the cloth chip bag................................... 32 right bottom of eyelet..........................................57
3-20. Installing/removing the presser unit...................... 33 7-18. Setting the needle throwing width of the left
4. PREPARATION BEFORE OPERATION..........34 bottom of eyelet..................................................58
4-1. Lubrication of the machine and how to lubricate... 34 7-19. Setting the needle throwing width......................... 58
(1) Lubricating the arm oil tank.......................................... 34 7-20. Setting the type of bartack...................................... 58
(2) Lubricating the bed oil tank.......................................... 34 7-21. Setting the length of taper bar................................ 59
(3) Lubricating the looper and spreader components..... 35 7-22. Setting the number of stitches of taper bar.......... 59
(4) Lubricating the looper bracket oil tank........................ 35 7-23. Setting the offset of taper bar................................. 59
(5) Lubricating the needle bar and the gear section........ 36 7-24. Setting the number of stitches of slant section
of taper bar............................................................... 60
4-2. Attaching the needle.................................................. 37
7-25. Compensation of the number of stitches of the
4-3. Threading the machine head.................................... 38
(1) Threading the upper thread (needle thread)................ 38
right side taper bar................................................... 60
7-26. Setting the straight bar length................................ 60
(2) Threading the lower thread (looper thread)................. 39
7-27. Setting the number of stitches of straight bar...... 61
(3) Threading the machine with gimp................................ 40
7-28. Setting the overlapping amount of straight bar.... 61
4-4. How to set the cloth on the sewing machine.......... 40
7-29. Setting the needle throwing width of straight bar.61
5. STRUCTURE OF THE OPERATION 7-30. Setting the number of stitches of round bar......... 62
SWITCH...........................................................41 7-31. Setting the number of overlapping stitches of
5-1. Structure of the operation panel.............................. 41 round bar 2............................................................... 62
5-2. Temporary stop switch.............................................. 43 7-32. Setting the needle throwing width of the round
5-3. Hand switch................................................................ 43 bar..............................................................................62
5-4. Foot switch (optional)................................................ 43 7-33. Setting the needle throwing width at the upper
section of eyelet bar................................................ 63
6. HOW TO USE THE OPERATION PANEL.......44 7-34. Setting the reduced sewing speed for straight/
6-1. Basic operation of the sewing machine.................. 44 round bar.................................................................. 63
6-2. Setting the thread tension......................................... 44 7-35. Setting the sewing speed........................................ 63
6-3. Temporarily stopping the sewing machine............. 45 7-36. Setting the reduction speed of eyelet.................... 63

i
 7-37. Setting the soft start................................................ 64 (6) Standard of replacing time of the gas spring.............. 94
7-38. Setting the number of stitches at the beginning of (7) Replacing the gas spring.............................................. 95
sewing of thread tension................................................... 64
11. EXCHANGING GAUGE PARTS AND OP-
7-39. Setting the number of stitches at the end of sew-
ing of thread tension.................................................. 64 TIONAL............................................................96
11-1. Throat plate............................................................... 96
8. ADJUSTMENT OF EACH PART.....................65 11-2. Presser set................................................................ 96
8-1. Adjusting the pressure of the cloth trimming 11-3. Presser holding plate............................................... 97
knife...........................................................................65 11-4. Cloth cutting knife.................................................... 97
8-2. Adjusting the stitch bite width.................................. 66 11-5. Hammer.....................................................................98
8-3. Adjusting the presser................................................ 67 11-6. Others........................................................................98
8-4. Adjusting the presser opening amount................... 68
8-5. Adjusting the needle thread drawing amount......... 69 12. TROUBLES AND CORRECTIVE MEA-
8-6. Adjusting the thread take-up thread guide.............. 69 SURES IN SEWING.........................................99
8-7. Adjusting the remaining amount of the gimp......... 70 13. MEMORY SWITCH......................................101
8-8. Adjusting the gimp thread tension........................... 70 13-1. Operating procedure............................................. 101
8-9. Needle thread clamp unit (optional)......................... 71 13-2. Memory switch list................................................. 102
8-10. Adjusting the brightness of the hand lamp........... 72
14. ERROR LIST................................................104
9. HOW TO USE THE VARIOUS FUNCTIONS...73
9-1. Operating procedure of thread tension compensa- 15. STANDARD PATTERN LIST.......................107
tion of each section.................................................... 73 16. SEWING DATA ENTRY SHEET...................108
9-2. Changing the setting position of cloth.................... 76
9-3. Changing over the mode of the start switch........... 76
9-4. Changing over the presser movement.................... 76
9-5. Changing over the counter (DOWN counting)........ 76
9-6. Changing over to the mode of the stop before
cloth cut.................................................................... 76
9-7. Copying the pattern data........................................... 77
9-8. Deleting the pattern data........................................... 78
10. MAINTENANCE.............................................79
10-1. Looper thread trimming (overall thread trimmer
type)...........................................................................79
10-2. Timing between the needle and the looper........... 79
10-3. Height of the needle bar.......................................... 82
(1) Adjusting the needle bar height.................................... 82
(2) Reference height of the needle bar.............................. 82
10-4. Adjustment to prevent triangular stitch skip-
ping in the case of a narrow needle throwing
width..........................................................................83
10-5. Clearance between the needle and the looper...... 84
10-6. Adjusting the needle guard..................................... 84
10-7. Clearance between the spreader and looper
and the opening timing of the spreader................. 85
10-8. Height of the throat plate........................................ 87
(1) Height of the throat plate............................................... 87
(2) Adjusting the height of the throat plate....................... 87
10-9. Position of the presser foot.................................... 88
10-10. Adjusting the knife dropping position................. 88
10-11. Installing position of the needle thread trim-
ming knife................................................................. 89
10-12. Cleaning.................................................................. 90
10-13. Draining.................................................................. 90
10-14. Replacing consuamables...................................... 91
(1) Worn-out of the hammer face....................................... 91
(2) Replacing the cloth cutting knife and the hammer..... 92
(3) Replacing the looper thread trimming knife (overall
thread trimmer type)...................................................... 93
(4) Replacing the needle thread trimming knife............... 94
(5) Changing the thread trimmer retaining plate (needle
thread trimmer type)...................................................... 94

ii
 1. SPECIFICATIONS
Specifications J type C type
1 Application Jeans Cotton pants, working pants
Operating temperature
2 5°C to 35°C
range
3 Operating humidity range 35 % to 85 % (with no condensation)
Number of patterns that
4 99 (1 to 99) (standard patterns have been factory-numbered 90 to 99)
can be stored in memory
Single-/3-phase 200 to 240 V 50/60 Hz
5 Input power
Supply voltage fluctuation: Rating ± 10 %
6 Sewing speed 400 to 2,500 sti/min (in 100 sti/min steps)
Needle thread Overall thread Needle thread Overall thread
7 Thread trimmer type
trimmer type (00) trimmer type (01) trimmer type (00) trimmer type (01)
8 Sewing length 10 to 38 mm 10 to 34 mm 10 to 38 mm 10 to 34 mm
9 Buttonhole length 10 to 38 mm *1 10 to 28 mm 10 to 38 mm *1 10 to 28 mm
2.0 to 4.0 mm (factory-setting at the time of delivery: 2.5 mm)
10 Needle throwing width
[1.5 to 5.0 mm by compensation on the feed panel]
Length of buttonhole with
11 3 to 15 mm *2
taper bar
12 Lift of presser foot Standard 13 mm
13 Change of stitch shape Selection by program
14 Buttonhole cutting Cut-before knife + Cut-after knife, without knife
Cloth cutting knife drive
15 Driven by air cylinder
method
16 Feed method Intermittent feed by stepping motor
17 Needle used DO x 558 Nm90 to 120 (Needle count attached at the time of delivery: Nm110)
18 Safety device Pause switch & automatic stop function at the time of detection of a trouble
19 Lubricating oil JUKI MACHINE Oil No. 18
Main regulator: 0.5 MPa
20 Air pressure
Hammer pressure regulator: Standard 0.35 MPa (max. 0.4 MPa)
21 Air consumption 49.5 ℓ /min (11.6 cycles/min)
Machine head: 382 mm (width) x 656 mm (length) x 584 mm (height)
Complete unit (Table-fixed type)
22 Machine dimensions : 1050 mm (width) x 700 mm (length) x 1248 mm (height) *3 (excluding the thread stand)
Complete unit (Semi-sunken type)
: 1060 mm (width) x 790 mm (length) x 1096 mm (height) *3 (excluding the thread stand)
23 Power consumption 200 VA
Machine head: Approx. 110 kg; Operation panel: Approx. 0.3 kg
24 Mass
Control box: Approx. 4.5 kg
- Equivalent continuous emission sound pressure level (LpA) at the workstation :
A-weighted value of 82.0 dB; (Includes KpA = 2.5 dB); according to ISO 10821-
C.6.3 -ISO 11204 GR2 at 2,500 sti/min for the sewing cycle, 3.8 sec. (Pattern :
No.90).
25 Noise
- Sound power level (LWA) ;
A-weighted value of 92.5 dB; (Includes KWA = 2.5 dB); according to ISO 10821-
C.6.3 -ISO 3744 GR2 at 2,500 sti/min for the sewing cycle, 3.8 sec. (Pattern :
No.90).
*1 : For the machine provided with the optional needle thread clamp unit, the buttonhole length is 10 to 28 mm.
*2 : Parallel section: Taper length can be set to such a value that does not exceed the total of the eyelet section and the
bartacking section.
*3 : The height of the completed unit differs with the height of the table stand.

–1–
2. NAME OF EACH COMPONENT

❼ • Hand pulley ❼
The needle bar can be lifted or lowered by hand
with the hand pulley.

❾ ❽

❹
❸

❷
❺

❶ Temporary stop switch ❺ Control box ❾ Thread stand

❷ Presser switch ❻ Power switch  Feed base
❸ Start switch ❼ Hand pulley
❹ Operation panel ❽ Machine head

–2–
 3. INSTALLATION

DANGER :
1. The sewing machine should be installed by a trained technician.
2. Contact the distributor or a professional electrician to ask him/her to carry out electric wiring.
3. The sewing machine has a mass of approximately 110 kg. Four or more workers are required
to carry out the installation of the sewing machine and adjustment of the table height.
4. Never connect the power plug until the installation of the sewing machine is completed in order
to protect against an accident due to an abrupt startup of the sewing machine.
5. Be sure to ground the earthing wire in order to protect against an accident due to electrical
leakage.
6. Be sure to raise/return the sewing machine from/to its home position by holding it with both
hands.
7. Do not apply an unreasonable force to the sewing machine when it is in the raised position. If
such a force is applied, the sewing machine can lose its balance to fall alone or fall together
with the table, resulting in personal injury or sewing-machine breakage.

3-1. Table
• Use the table and stand which are able to withstand the sewing machine mass (110 kg) and vibration. The
table thickness of which is 40 - 60 mm should be used.
• Use the table stand which has an appropriate height for the sake of the operator's ease of use.
• The fixing bolt for fixing the table and the stand should be of the length which matches the thickness of the
table.
• The table differs between the table-fixed type and the semi-sunken type machine heads. Appropriately
machine the table referring to the table drawing corresponding to the type of the machine head.

1. In the case the table thickness exceeds 60 mm, the length of the bolts supplied with the unit as
accessories is adequate.
2. In the case the fixing bolt for fixing the table and the stand is too long for the table thickness,
unexpected injury to hands or head can occur.

(1) Drawing of the stand

（715） 500
（630～965）

–3–
 H 50±1 H
730
+2 Ø 3±1
-1
17 80±1 17 +
Ø 6 -1 2
Ø

2XØ12
2X(Ø6)
2Ｘ
680
670

Ø5
2XØ32

50±4
0±4
R)
2X(Ø17)

（ C 70±1 80±1 6
2Ｘ Ø

2XØ12
2X(Ø6)
615 2Ｘ
598
56±1

Ø6
595

2Ｘ
Z Z Z Z
555
90±4

530
2XØ12

116±4
2X(Ø6)

+2
-1
23
Ø

5
0±
10
D

Ø
A F
109
±1
(2) Drawing of the table(Table-fixed type)

368±1
385±1
320±1

330
1
E
500±1.5

.5±

–4–
60

48
°±5

)
°

B
(30°

260
8±1

254±3.5
207±3.5 486±3.5 277±3.5
10±1

4Ｘ
Ø
G

254±3.5
4X(Ø13)

13
175
4XØ9
30±2

149
4XØ50

4XØ26
4X(Ø9)

68±1
118
250±1
4XØ9 55±1
252±1
75 Z-Z
Z Z (4 (4箇所)
Z-Zlocations)
56 Z Z 4X 30°
+0.1
4XØ26 0
715±3
0
4X 1+0.1

40
50
80
365
370
410
490
530
570
895
915
928

670

(4XØ9)
1000
1050

907.5

A 2×ø4.5±0.5 depth 30 D 4×ø2.5±0.5 depth 30 G 2×ø3.5±0.5 depth 30 (on the bottom surface)
B 2×ø4.5±0.5 depth 30 E 2×ø4.5±0.5 depth 30 H R2 (all corners)
C 2×ø3.5±0.5 depth 30 (on the bottom surface) F 2×ø4.5±0.5 depth 30 I Right side
 50
225
760
872
1010
40±1
170±1 170±1 170±1
H H
790

J K I Note) When no
E
740 740 instruction is given,

21±1
the corner radius

37±2
R 30 shall be R5.
R 30

R8
R8

R 20 173±2 173±2
R2
0 F

80±1

80±1
A 4×9 drilled hole

44±1
N 26 Depth of coun-
R 20 +1

20±1
Z Z Y Y terbore 1 0

0
R2
168±1 56±1 B 4×8 drilled hole 22

18±1
61±2
R8 Depth of counter-
R8 +1
R8
bore 1 0
C 4×9 drilled hole
176±2 176±2
M 26 Depth of coun-

R2
0
116±4 +1
terbore 1 0
461
D 4×2.5±0.5 drilled

385±1.5
109
hole,depth 20±3
D ±1

610±2
253±2
E 4×8 drilled hole
320±1

165±2
241±2 241±2

500±1.5
22 Depth of coun-

297±3
214±1 214±1 +1

±1
60°

48.5
199±2 199±2 terbore 1 0

±5
°
(3) Drawing of the table (Semi-sunken type)

F 2×6 drilled hole

is required. Prepare the kit simultaneously with the table.

–5–
R 20 323
R8
12 Depth of coun-
R8 +1
R 20
terbore 1 0
R 20

83±2
G 2×3.5±0.5 drilled

44±1
80±1
hole,depth 20±3

99±1
Z Z Y Y 238
231
(on the bottom

R2
0

0
R2

37±1
18±1
L surface)

61±2
C
(Refer to "3-5.(2) ① Installing the table reinforcing plate" p. 11.)

R8
R8 H R2 (all corners)

125±2
167±2 167±2
G I Right side
145±3
138
70 45 J 17 drilled hole

R 30
R 30
R8 55±1
R8 K 17 drilled hole
A

13
715±3
L 8×10 drilled hole

41±1
M 30 drilled hole
N 2×6 drilled hole
B 12 Depth of coun-
+1
170±1 170±1 170±1 terbore 1 0

225
480
885
898
905
1060

122.5
Y-Y Z-Z
(2カ所)
(2Y-Ylocations) Z-Z (2カ所)
(2 locations)
7±0.5
7±0.5
32080707）(supplied with the kit (part number: 40157881)) has to be installed without exceptions.
In the case the semi-sunken type machine head is used, the table reinforcing plate (part number:
In the case the semi-sunken type machine head is used, the kit for semi-sunken type (part number : 40157881)
 3-2. Installing the control box

Install control box ❶ to the location illustrated in the

figure using four bolts ❷, four plain washers ❸ and
four spring washers ❹ and four hexagonal nuts ❺
❷
supplied with the unit.

1. Install control box ❶ 30 mm or more

away from the stand. If control box ❶ is
❸ located too close to the stand, the for-
❹ mer can get hot or the sewing machine
❺ can malfunction.
2. In the case the semi-sunken type ma-
chine head used, install the control box
❶ after carrying out the procedure written
in "3-9. Installing the regulator and the
manifold" p. 20.

Bolt ❷ is a cup head square neck bolt (M8;

Length: 70 mm) and nut ❺ is a hexagonal
nut (M8).

30 mm or more

3-3. Installing and connecting the power switch

1) Installing the power switch
Fix power switch ❶ on the underside of the table with
two wood screws ❷.
In the case the semi-sunken type machine
head used, install the control box after
carrying out the procedure written in "3-9.
Installing the regulator and the manifold"
p. 20.
❶
Wood screw ❷ has the nominal diameter of
5.1 mm and a length of 20 mm.
❷

–6–
2) Connecting the power cable
Voltage specifications are shown on the power indication tag attached on the power cable and on the rating
plate adhered on the power box. Connect the cable which matches the specifications.

Power indication tag

Rating plate

(For example: In the case of 200V)

Never use the machine unless the voltage specifications described on the power indicator label
are satisfied.

• Connecting three phase 200V to 240V • Connecting single phase 200V to 240V
AC200 to AC240 V AC200 to AC240 V

Green/Yellow
– GND Black
Red White Green/Yellow Brown
Light blue
Power switch side – GND
Power switch side

Power source cord Power source cord

Plug side Plug side

Black White Light blue

Table Table

Red Brown

Power switch Power switch

Green/
Red Yellow Green/
Yellow

White Light blue

Green Green/
Yellow

Black Brown

Control box Plug Control box Plug

–7–
 3-4. Taking out the sewing machine
DANGER :
1. The sewing machine should be taken out by a trained technician(s).
2. The sewing machine has a mass of approximately 110 kg. Four or more workers are required
to take out the sewing machine.
3. Do not apply an unreasonable force to the sewing machine until the installation of the sewing ma-
chine is completed. If such a force is applied, the sewing machine can lose its balance and can fall
alone or together with the table, resulting in personal injury or sewing-machine breakage.
4. Never connect the power plug until the installation of the sewing machine is completed in order
to protect against an accident due to an abrupt startup of the sewing machine.

❷ 1) Remove accessory boxes ❶ and ❷ in the direction

of the arrow.
❸
2) Remove upper foam polystyrene ❸ in the direction
of the arrow.
3) Remove the right and left intermediate foam poly-
styrene ❹ and ❺ in the direction of the arrow.

❹ ❺

4) Take out the sewing machine from the package, by four workers, holding the portions illustrated in the figure.
Place it on the floor.

Place a cardboard sheet or packing material between

the floor and the sewing machine in order to avoid
damaging the floor and to prevent the cords from
being pinched between the INT cover and the floor.

Cord

INT cover

–8–
 3-5. Installing the sewing machine
WARNING :
The sewing machine has to be carried by four or more workers.
Carry out the installation work on a level place.

(1) In the case of the table-fixed type machine head

1) Remove the paper liners from four bolt rubbers B
❶ ❶. Place and adhere the liners over the holes in
the table. (Place the bolt rubber B with its convex
❶ side faced downward.)

Under-
Paper
side
liner

1)
2) Place the sewing machine on
the top surface of the table in
such a way that the concave
sections A of the bottom cover
fit on bolt rubbers B ❶.
A 3) Remove four setscrews ❾.
Remove INT cover .
4) Put air tubes and cords coming
from the sewing machine head
into the hole in the table.
5) Install INT cover  with four
2) setscrews ❾.

3) 4) 5)

❾
❾

❾ 
 Cord Air tube

1. Lift the sewing machine head with four or more people by holding the sections marked with
dotted circle as shown in the figure.
2. Do not hold the underside of hinge stopper, bottom cover, and feed base.

Feed base

Hinge stopper

Bottom cover

–9–
 6) Remove machine head fixing bolts ❽. Raise the
6), 7)
sewing machine to the 1st step of the hinge stop-
❻ per.
❼ When raising the sewing machine, refer to "3-6.
❹ Raising and returning the sewing machine" p.
❺ 16.
WARNING :
Do not raise the sewing machine above
❽ the 1st step of the hinge stopper.
If it is raised above the 1st step, the sew-
ing machine can fall, resulting in personal
injury or sewing machine breakage.

❷ 7) Open front cover ❷. Insert a bolt ❸, a washer ❹

❺
and a bolt rubber ❺ from the right front side of the
❹
sewing machine, and temporarily fix them with a
❸ bolt rubber ❺ a washer ❹, a packing ❼ and two
nuts ❻.

❸ 8) Be sure to raise the sewing machine to the fourth

8) to 10) ❼
❹ step of the hinge stopper.
❺ Fix the sewing machine with remaining three bolts
❸, six washers ❹, six bolt rubbers ❺, three pack-
ings ❼ and six nuts ❻.
❺
❹
9) Remove bolt ❸ and two nuts ❻ which have been
❻ used for temporarily fixing.
WARNING :
If your body comes in contact with the
corner section of connector cover ❾ of
the lateral-direction motor during work,
unexpected injury can be caused. Be sure
to keep away from the corner section of
the connector cover.

10) Attach bolt ❸ and two nuts ❻ removed in the

❸
above step of procedure in the reverse direction
and fix them.
❼
❸
❹ Fix bolt ❸ and nuts ❻ in such a state that
❼ ❺ bolt rubber ❺ is slightly squeezed.
❹
❺ 1. Keep machine head fixing bolt ❽ since
it is necessary when moving the sewing
❸ machine. Whenever you move the sew-
❻ ing machine, be sure to install the head
fixing bolt in place.
❻ 2. Bolt ❸ is an M8 hexagon socket head
bolt (length: 85 mm). Nut ❻ is an M8 one.

❹ ❺
❹
❻
❻

– 10 –
(2) In the case of the semi-sunken type machine head

❸ ❶

❹
❺
❻
❸

❷
❷

① Installing the table reinforcing plate

1) Fix two table reinforcing plates ❷ on the table ❶ with eight bolts ❸ , eight plain washers ❹ , eight spring
washers ❺ and 16 nuts ❻.

The bolt ❸ is M6 carriage bolt length of which is 60 mm. The dimensions of the plain washer ❹ are
"φ12.5 xφ6.4 x t1.6". Spring washer ❺ is for M6 and nut ❻ is M6 (class 1).
Bolts ❸, plain washers ❹, spring washers ❺ and nuts ❻ are supplied with the kit for semi-sunken
type machine head (part number: 40157881).

❶ Paper Paper
Under- Under-
liner side liner
side ❶
❶ ❶
❷ ❷
⇦
⇦

A A

② Assembling the bottom cover stay (front) ③ Assembling the bottom cover stay (rear)
1) Remove paper liners ❸ from two bottom rubbers 1) Remove paper liners ❸ from two bottom rubbers
B ❶ and affix them on bottom cover stay ❷. B ❶ and affix them on bottom cover stay ❷.
* Affix two right-side bottom rubbers B ❶ with shifted * Affix two right-side bottom rubbers B ❶ with shifted
to the left side (in the direction of the arrow) with to the right side (in the direction of the arrow) with
respect to slot A in bottom cover stay ❷. respect to slot A in bottom cover stay ❷.

1. Insert bottom rubbers B ❶ into the respective holes in bottom cover stay ❷ while holding them
so that their projecting side is faced downward.
2. Carefully check the location of mounting holes in left-side bottom rubbers B ❶.

Bolt rubber B ❶ is the head accessories. In addition, bottom cover stay ❷ are supplied with the kit
for semi-sunken type machine head (part number: 40157881).

– 11 –
 ④ INSTALLATION
1) Place table ❶, bottom cover stay (front)
❷ and bottom cover stay (rear) ❸ on the
❶ floor.
B 2) Align bottom cover stay mounting hole A
in table ❶ with mounting holes B for the
A
respective bottom cover stays.
❷ ❸
At this time, the distance between
the respective bottom cover stays
must be 309 mm, and the distance
between bottom cover stay (rear) ❸
and table ❶ must is 81 mm.

❶
❷ ❸

309mm 81mm

3) Put the machine head on the bottom cover

stays.
At this time, put the machine head in such
a way that bottom rubber B ❹ fits in de-
pressed portions C in bottom cover ❺.
❺ C

– 12 –
 1. Lift the sewing machine head with four or more people by holding the sections marked with
dotted circle as shown in the figure.
2. Do not hold hinge stopper ❻, bottom ❺ of bottom cover D and depressed portion E on the
side face.

❺
❺
❻

E
E
D
3. When putting the machine head on the bottom cover stays, carefully prevent handle ❼ and INT
cover ❽ from coming in contact with table ❶. In addition, do not place the wiring and piping
between INT cover ❽ and table ❶.

Wiring, piping

❶ ❽

4) Lifting table ❶, join table ❶, bottom cover

stay (front) ❷ and bottom cover stay (rear)
❸ with eight bolts ❾, eight plain washers
, eight spring washers  and 16 nuts
.
❾
The bolt ❾ is M8 carriage bolt length
of which is 70 mm. The dimensions
of the plain washer  are "φ30
❶ ❾
xφ8.5 x t2". Spring washer  is for
M8 and nut  is M8 (class 1).
Bolts ❾, plain washers , spring
washers  and nuts  are sup-
plied with the kit for semi-sunken

 type machine head (part number:

40157881).

– 13 –
 5) Holding table ❶ at its four corners with
four or more workers, place it on assem-
bled table stand  and fix with four bolts
, four plain washers , four spring
❶ washers  and four nuts .
 1. Lift the table ❶ has to be carried
by four or more workers.
2. Lift the table ❶ while keeping it
in a horizontal position without
tilting.

Bolt  is carriage bolt with 18 5/16

threads and is 70 mm long. Plain
washer  is of "φ18 xφ8.5 x t1.6".
Spring washer  is of "φ15 x φ9 x
 t2". Nut  has 18 5/16 threads.
 ❶ Bolt , plain washer , spring
washer , nut  is the head acces-
sories.

 


6) Remove machine head fixing bolts .

 Raise the sewing machine to the 3rd step
 of the hinge stopper.
 When raising the sewing machine, refer to

"3-6. Raising and returning the sewing
machine" p. 16.
7) Secure the machine head by fixing two
bolts , two packings , four plain wash-
ers , four bolt rubbers  and four nuts 

at two locations on this side of the sewing
machine.

Fix bolt  and nuts  in such a

 state that bolt rubber  is slightly
 squeezed.


– 14 –
 8) Raise the sewing machine to the 4th step
of the hinge stopper.
When raising the sewing machine, refer to
"3-6. Raising and returning the sewing
machine" p. 16.
 9) Secure the machine head by fixing two
bolts , two packings , four plain wash-
ers , four bolt rubbers  and four nuts 

at two locations on far side of the sewing

 machine.

Fix bolt  and nuts  in such a

state that bolt rubber  is slightly
 squeezed.


1. Keep machine head fixing bolt  since it is necessary when moving the sewing machine. When-
ever you move the sewing machine, be sure to install the head fixing bolt in place.
2. The bolt  is M8 hexagon socket head screws of which is 50 mm. The dimensions of the plain
washer  are "φ30 xφ8.5 x t2" and nut  is M8 (class 3).
Bolt , packing  plain washer , bolt rubber , nut  is the head accessories.

10) Secure tray  on bottom cover stay (front)

❷ with three setscrews .

Setscrew  is an M4 round head

screw with washer and has a length
of 12 mm.
Tray  and setscrews  are sup-
plied with the kit for semi-sunken
type machine head (part number:
40157881).
❷




– 15 –
 3-6. Raising and returning the sewing machine
DANGER :
1. Do not lift the sewing machine for any purpose other than for installation, repair or adjustment
in order to prevent accidents resulting in personal injuries due to pinching. In addition, the
sewing machine has to be lifted for repair or adjustment only by a maintenance technician
who is familiar with the machine.
2. If you find the sewing machine is too heavy to lift, the gas spring may have malfunctioned
due to outgassing.
Never lift the sewing machine in such a state since the machine can drop to pinch hands,
fingers and arms resulting in serious injury.
* Carefully read the description given in "10-14. (6) Standard of replacing time of the gas spring"
p.94 and "10-14. (7) Replacing the gas spring" p.95.
3. Be sure to carry out the work while strictly observing the following in order to protect against
serious injury to hands, fingers and/or arms due to pinching in the relevant parts of the sewing
machine.
• Be sure to hold the sewing machine by the ribs located on the front side of the bed.
• Be sure to securely fix the sewing machine in the raised position by locking the hinge stopper.
4. Do hole hold any part other than the ribs located on the front side of the bed.
5. If you raise the sewing machine with the feed base remained this side, the feed base can move
to pinch hands and fingers resulting in an unexpected injury.

WARNING :
When raising/returning the sewing machine from/to its home position, check to be sure that the
sewing machine is locked by the support shaft in the stop position of each step of the hinge stopper.

The sewing machine can be raised/returned to/from four different heights.

1st step 2nd step

3rd step 4th step

– 16 –
 1) To raise the sewing machine, firstly push feed
❷
base ❷ away from you (in the direction of the
❻
arrow), then insert flat-blade screwdriver ❹ into
bottom-cover opening tool slot ❸, turn it counter-
clockwise to release the sewing machine up/down
lock ❺.
2) Turn flat-blade screwdriver ❹ to keep the lock
❼ in the released state, and slightly lift the sewing
machine by holding it by rib ❶ located on the front
side of the bed.
❶ 3) Carefully remove flat-blade screwdriver ❹. Hold
❹ ❸
ribs ❶ located on the front side of the bed with
your both hands to slowly lift the sewing machine
to the 1st step of hinge stopper ❻.
❺ At this time, do not hold feed base ❷ and feed
guide shaft ❽.
4) Check to be sure that hinge stopper ❻ is locked
❷ by support shaft ❼. Then, take hands off the ribs.
5) To raise the sewing machine to the 1st to 3rd steps
of the hinge stopper, hold ribs ❶ located on the
front side of the bed with your both hands to slowly
lift it to the required step of the hinge stopper.
❽

– 17 –
[To lift the sewing machine from the 3rd to 4th step of the hinge stopper]
6) Hold rib ❶ located on the front side of the bed with your right hand to draw hinge stopper ❻ in direction of
arrow A until the lock is released. Then, slowly lift the sewing machine.
7) Hold ribs ❶ located on the front side of the bed with your both hands to slowly lift the sewing machine to
the 4th step of hinge stopper ❻.

❻ A ❶

8) To return the sewing machine to its home position, firstly check to be sure that there is no tool such as a
screwdriver inside the bottom cover.
9) Hold rib ❶ located on the front side of the bed with your right hand to slightly lift the sewing machine. Then,
hold handle ❻ of the hinge stopper with your left hand and pull it toward you (in direction A) until the lock
is released, then slowly lower the sewing machine.
10) Take your left hand off the stopper section. While supporting ribs ❶ located on the front side of the bed
with your both hands, lower the sewing machine further.

DANGER :
1. Do not lower the sewing machine while keeping pulling the hinge stopper in direction A, in
order to prevent pining of fingers, hands and arms under the sewing machine leading to a
serious injury. (Be sure to take your hands off the hinge stopper.)
2. Do not hold feed base ❷ and feed guide shaft ❽.

11) At its each step, the hinge stopper is locked to secure the sewing machine at the corresponding height.
Following the procedure described in 9), hold rib ❶ on the front side of the bed with your right hand to
slightly lift the sewing machine. Then, hold the handle of the hinge stopper with your left hand to release
the lock and slowly lower the sewing machine.
12) The sewing machine is stopped again at the final step of its lowering for the sake of safety. Following the
procedure described in 9), hold rib ❶ on the front side of the bed with your right hand to slightly lift the
sewing machine. Then, hold the handle of the hinge stopper with your left hand to release the lock and
slowly lower the sewing machine.

DANGER :
Take care to prevent pinching of hands and fingers between the sewing machine and the bottom
cover. It should be strictly prohibited to lower the sewing machine by two or more workers while
holding it by any section other than the ribs located on the front side of the bed since it can cause
a pinching accident resulting in a serious injury to hands, fingers and/or arms.

– 18 –
3-7. Installing the poly oiler
1) Place the sewing machine in its home position.
2) nstall oil drain cock ❶, oil seal ❷ and washer ❸
❺
on bottom cover ❺ with four setscrews ❹.
❷ 3) Raise the sewing machine.

❸
❹

4) Drive spring pin ❼ of bottom cover ❺ into bottom

❼ cover ❺ until it is almost flush with bottom cover
❺.

Take care not to crack bottom cover ❺ when

driving in spring pin ❼.
❺ ❺ ❼

5) Make a knot in the oil wick ❻ (ø2.5 mm). Insert oil

wick ❻ (ø2.5 mm) into spring pin ❼ of bottom cover
❼ ❺ until its end comes from oil drain cock ❶.
❻ ❼
At this time, insert oil wick ❻ (ø2.5 mm) supplied
as accessories into the slit in spring pin ❼.
❶
6) Install poly oiler ❽ on oil drain cock ❶.
❻
Refer to "3-6. Raising and returning the
❽
sewing machine" p. 16 when you raise or
return the sewing machine.

3-8. Installing the operation panel

1) Fix operation panel installing plate ❶ on the table
❺
at a desired location near its right end with four
❷ ❶ wood screws ❷.
❸
2) Put the cable of operation panel ❺ through hole
❹ in the table.
❹
3) Fix operation panel ❺ on operating panel mounting
plate ❶ with three setscrews ❸.

Wood screw ❷ has the nominal diameter

of 3.8 mm and a length of 20 mm. Setscrew
❸ is an M4 round head screw with washer
and has a length of 16 mm.

– 19 –
3-9. Installing the regulator and the manifold
1) Install manifold asm.  on manifold mounting plate
❾ with four setscrews .

2) Install solenoid valve  on manifold mounting
  plate ❾ with two setscrews .


3) Install regulator asm. ❶ on

❸ ❻ ❸ ❻ table ❷ with two setscrews
❼ ❸ and two washers ❹.
❹
❼ ❹ 4) Install manifold ❺ on table ❷
with two setscrews ❻, four
washers ❼ and two nuts ❽.

❷ ❷ ❼
❶ Setscrews ❸ and ❻
❼ ❶
❽ are pan head screws
❽
M5 of length 50 (mm).
Setscrews  and  are
hexagon socket head
screws M4 of length
30. Nuts ❽ are hexagon
❺ ❺
nuts M5.

Table-fixed type Semi-sunken type

5) Attach plugs  and  to manifold asm.  at the

locations shown in the figure at left.

Plug  is for ø4 hole and plug  is for ø6

 
hole.


 

00 type 01 type

– 20 –
[For the needle thread clamp unit]
1) Install manifold asm. ❶ for the
❷ needle thread clamp on manifold
mounting plate ❷ with four set-
❷
screws ❸.
❸
❸ Setscrew ❸ is M4 hexa-
gon socket head screws of
which is 30 mm.
❶

Table-fixed type Semi-sunken type

❽
❻
❷
❹

❼
Table-fixed type Semi-sunken type

2) For the table-fixed type machine head, install manifold mounting plate ❷ which has been assembled in 1)
on table ❹ with two setscrews ❺ and two washers ❽. For the semi-sunken type machine head, install it
on bottom cover stay (rear) ❻ with two setscrews ❼.

Setscrew ❺ is M5 50-mm long pan head screw. Setscrew ❼ is M5 12 mm long pan head screw with
washer.

3) Attach plug ❾ to manifold asm. ❶ for the needle A

thread clamp at the locations shown in the figure B
at left.
For one of plugs ❾, remove No. 39 of the manifold 4) Connect connector A of standard manifold  and
asm. and attach the plug instead. (Pipe is connect- connector B of manifold asm. ❶ for the needle
ed to No.39.) thread clamp.

– 21 –
3-10. Connecting the cords
DANGER :
To prevent personal injuries caused by electric shock hazards or abrupt start of the sewing
machine, carry out the work after turning OFF the power switch and a lapse of 5 minutes or more.
To prevent accidents caused by unaccustomed work or electric shock, request the electric expert
or engineer of our dealers when adjusting the electrical components.

1) Loosen four setscrews ❷ of control box cover ❶.

❷ Remove control box cover ❶.
2) Connect the cords to the respective connectors
on MAIN PWB, SDC PWB. (Fig. 1)
3) Fix the shielded ground wire of the INT PCB signal
cord at location A of the control box with a screw.
(Fig. 2)

Sewing
White
CN15 9P machine head
SDC PWB White
CN17 4P

White
CN30 16P
Brown
CN45 50P Operation
CN34 26P Gray panel
MAIN PWB Air
switch
White
CN35 3P

Blue
CN44 30P Solenoid
valve

Red
CN43 9P 10P
Foot pedal switch
(Option)

CN30 White MAIN PWB

SDC PWB

Shielded
ground wire

CN44 CN34 CN45 CN17 CN15

Blue Gray Brown White White (Fig. 1) (Fig. 2)

– 22 –
3-11. Handling the cords
DANGER :
To prevent personal injuries caused by electric shock hazards or abrupt start of the sewing
machine, carry out the work after turning OFF the power switch and a lapse of 5 minutes or more.
To prevent accidents caused by unaccustomed work or electric shock, request the electric expert
or engineer of our dealers when adjusting the electrical components.

1) Bring the cords under the table into the control box.
2) Put the cord brought into the control box through
cord exit plate ❶ and fix cable clip band ❷.
❷

3) Install control box lid ❸ with four setscrews ❹.

❹

– 23 –
 3-12. Installing the foot pedal switch (optional)
DANGER :
To prevent personal injuries caused by electric shock hazards or abrupt start of the sewing
machine, carry out the work after turning OFF the power switch and a lapse of 5 minutes or more.
To prevent accidents caused by unaccustomed work or electric shock, request the electric expert
or engineer of our dealers when adjusting the electrical components.

The hand switch is provided on the standard type machine.

To use the optional foot pedal switch (part number: 40033831), connect it in the procedure described below.
When installing the foot pedal switch, the foot pedal switch junction cable asm. (part number: 40114433) is
also required. Refer to "11-6. Others" p. 98.
1) Loosen the four setscrews in the control box to
remove cover ❶.

2) Fix earthing wire ❷ of the foot pedal switch at

❸
❺ location A of the control box.
Pass the earthing wire through cord exit
plate ❸. If not, it can be caught under the
cover when closing it.

❷ A

3) Connect foot pedal switch junction cable ❹ to the

foot pedal switch cable (B) and connect the oppo-
site side of the junction cable to CN43 connector
on the PWB (C).

❹ 4) Fix the cable.

Loosen cable clip band ❺. Fix the foot pedal switch
cables (excluding earthing wire ❷) by means of
cable clip band ❺ together with other related ca-
B
bles.
DANGER :
It is very important to carefully connect the
cables to the correct connectors on the
PWB. Wrong connection poses a great risk.

Even in the case the optional foot pedal

switch is installed on the sewing machine,
the hand switch is still enabled. Carefully
operate the switches since the sewing
machine is activated by operating either
switch.
C

– 24 –
 3-13. Connecting the air supply

(1) Connecting the regulator and the manifold

1) Connect joint ❶ of the regulator and joint ❷ of the
❸ ❷
manifold by means of the air tube ø10 ❸.
❶

[For the needle thread clamp]

1)-1. Connect air tube ø10 ❸ and joint ❷ of the man-
❷ ifold by means of T-joint ❹ which has a short air
❸ ❹ ❻
❶
tube.
1)-2. Connect T-joint ❹ and joint ❻ of the manifold
for the needle thread clamp by means of air tube
ø10 ❼.

2) Connect joint ❽ of the cloth trimming regulator

and joint ❾ of the cloth trimming solenoid valve
by means of the air tube ø10 ❺.
❺

– 25 –
(2) Connecting the air tubes
Connect the respective air tubes coming from the sewing machine head to the respective solenoid valves
matching their numbers correspondingly.

No.1
No.2

No.3 No.4

No.5 No.6

No.7 No.8
No.9 No.15
No.39
(In the case of the
No.10 needle thread clamp)
No.16

No.11

No.12

[In the case of the needle thread clamp unit]

No.35

No.36

No.37

No.38

After the connection of the respective air tubes,

Cable
neatly bundle the cables etc. coming from the
sewing machine with the cable clip band sup-
plied with the unit as an accessory.

Cable clip band (L150) supplied

with the unit as an accessory

– 26 –
 3-14. Installing the air hose

■ Connecting the air hose

Connect the air hose to the regulator using the
hose band and quick-coupling socket joint supplied
❸ with the unit.

■ Adjusting the air pressure

❷ Open air cock ❶.

[Main regulator]
❶ Pull up and turn air pressure regulating knob ❸ of
main regulator ❷ to adjust the pneumatic pressure
❹
Open to 0.5 MPa. Then, push down the knob to fix it.
❺
[Regulator for cloth trimming knife pressure]
Pull down air pressure regulating knob ❺ of reg-
Close
ulator ❹ for the cloth trimming knife pressure and
turn it to adjust the air pressure to 0.35 MPa. Then,
push up the knob to fix it.
(The air pressure of the cloth trimming knife can be
adjusted in the range of 0.2 to 0.4 MPa by means
of regulator ❹.)

Regulator ❹ for the cloth trimming knife has

been factory-adjusted to 0.35 MPa. Do not
increase the air pressure unless it is really
necessary. Increased air pressure can cause
a decrease in sharpness of the knife and/or
knife breakage.

After the completion of the respective air pressures

adjustment, close air cock ❶ to remove air. Then,
re-open the air cock to adjust the respective air
pressures.
* The air is removed by closing air cock ❶.

– 27 –
 3-15. Cautions for the compressed air supply (source of supply air) facility
As large as 90 % of failures in pneumatic equipment (air cylinders, air solenoid valves) are caused by "con-
taminated air."
Compressed air contains lots of impurities such as moisture, dust, deteriorated oil and carbon particles. If
such "contaminated air" is used without taking any measures, it can a cause of troubles, inviting reduction in
productivity due to mechanical failures and reduced availability.
Be sure to install the standard air supply facility shown below whenever the machine provided with pneumat-
ic equipment is used.

Standard air supply facility to be prepared by the user

Air compressor

After cooler
Auto-drain
Air tank

Main line filter

Auto-drain

Air dryer Quality of the air supply

When the supply air contains a considerable amount of moisture

Ambient environment
When our machine is installed at a place where the temperature greatly
changes in the morning and in the evening from that in the daytime or
freeze is like to occur
In the aforementioned cases, be sure to install an air dryer.

Mist separator When the supply air contains a considerable amount of carbon and dust
(Most troubles in the air solenoid valves are caused by carbon.)
Be sure to install a mist separator.

Standard equipment supplied by JUKI

Filter regulator

Air solenoid valve

Air cylinder

Cautions for main piping

• Be sure to slope main piping by a falling gradient of 1 cm per 1 m in the direction of air flow.
• If the main piping is branched off, the outlet port of the compressed air should be provided at the
top part of the piping using a tee in order to prevent drain settling inside the piping from flowing
out.
• Auto drains should be provided at all lower points or dead ends in order to prevent the drain from
settling in those parts.

– 28 –
 3-16. Installing the thread stand
1) Assemble the thread stand asm. and install it in the hole in the rear left part of the table.
2) Tighten locknut ❶ so that the thread stand is fixed.

– 29 –
3-17. Installing the thread guides
1) Remove two thread guide plates ❶ and setscrew
❷ ❷.

2) Reverse one of thread guide plates ❶. Install the

thread guides so that they turn by approximately
40° to allow the thread to pass smoothly.

40° 40°

3) Install thread guide bar ❸.

❹
At this time, install thread
guide bar ❸ so that hole
❹ in thread guide bar ❸
is oriented to hole ❺ in the
❸ AT thread guide.

❺ ❹

– 30 –
3-18. Installing the eye protection cover and the finger guard
DANGER :
The eye protection cover and the finger guard are used to protect eyes against flying broken needle.
Be sure to use the sewing machine with them installed without exceptions.

1) Assemble finger guard ❶ to safety plate bracket

❺ ❷ with two setscrews ❸.
❻ Assemble finger guard ❶ equally with respect to
❷
safety plate bracket ❷.
❹ 2) Assemble eye protection cover ❹ to safety plate
bracket ❷ with two setscrews ❺ and two washers
❻.
3) Install the assembled eye protection cover and
finger guard asm. ❼ on face plate ❾ with screws
❽.
❶ ❸
Setscrew ❸ is an M4 hexagon socket head
cap screw and has a length of 8 mm. Set-
screw ❺ is an M4 round head screw and
has a length of 6 mm. Setscrew ❽ is an M4
round head screw and has a length of 6 mm.

– 31 –
3-19. Installing the cloth chip bag
1) Connect cloth chip suction device ❶ and cloth chip
❶ tube ❷. Fix them with hose band ❻.

❷ ❻

2) Install suspension hook ❸ to an easy-to-access

location on the underside of the table.
3) Suspend cloth chip bag ❹ on suspension hook
❸
❸.

4) Open the zipper of cloth chip bag ❹ to put cloth

❶
chip suction device ❶ in it.
5) Place cloth chip suction device ❶ in the top part
❹ of cloth chip bag ❹ and close the zipper.
Adjust the length of cloth chip tube ❷ by cutting it
❺
short at the point immediately below the table.
❷
If cloth chip tube ❷ is excessively long, cloth
chip tube ❷ can be clogged with cloth chips
since cloth chips can interrupt the air flow
from cloth chip suction device ❶.
Be sure to empty the cloth chip bag before
cloth chips in the bag reach the top of cloth
chip suction device ❶.

– 32 –
3-20. Installing/removing the presser unit

Carefully prevent contact between the cloth trimming knife and the work clamp plate when moving
the feed base by hand or installing/removing the work clamp unit.

■How to install
❷
1) Install the presser unit so that presser lever ❸ fits
in the letter “U” of presser base ❷.
2) Adjust the hole of presser plate ❺ to cloth open
❷
pin ❹.
❺ 3) Turn clamp holding plate ❶ to hold presser plate ❺.

❹ ❹

❸ ❶

■How to remove
1) Turn clamp holding plate ❶ to remove from press-
er plate ❺.
2) Lifting presser plate ❺, remove it so as to draw it.
❶

❻
❺

It is comparatively easy to install or remove the presser unit by moving feed base ❻ to the cloth
cutting position.
When moving feed base ❻ by hand, follow the aforementioned caution.

– 33 –
 4. PREPARATION BEFORE OPERATION

4-1. Lubrication of the machine and how to lubricate

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.

＊ Use JUKI MACHINE OIL No. 18 as the machine oil.

(1) Lubricating the arm oil tank

Lubricate arm tank ❶ to such an extent of approxi-
mately 80 %.
In addition, add oil in the case the oil level has de-
❶
creased below the red marker dot during the daily use
of the sewing machine.

(2) Lubricating the bed oil tank

[ In the case of the table-fixed type machine head ]
Lubricate bed oil tank ❷ up to the MAX. line A.
In addition, when the oil surface falls below the MIN line
A B during daily use, add an adequate quantity of oil.

If oil is added so that the oil level exceeds

❷ the MAX line A, the oil will spill out of the
B
❷ oil hole when the machine head is tilted
until it will go no further. Be careful when
replenishing the oil tank with oil.

[ In the case of the semi-sunken type machine head ]

Raise the sewing machine to the 2nd step of the hinge.
A
Add oil in bed oil tank ❷ until the oil surface reaches
the underside of MAX line A.
In addition, when the oil surface falls below the MIN line
B during daily use, add an adequate quantity of oil.

Be aware that oil will spill out from the oil

hole when tilting the machine head if the
added oil surface exceeds the underside
❷ of MAX line A.
B

– 34 –
(3) Lubricating the looper and spreader components
1) Remove the presser plates, right and left.
❺ 2) Apply two to three drops of oil to looper link ❶,
❹ ❸
spreader link ❷, spreader, right ❸, spreader, left
❹ and spreader actuating cam ❺.
❶
Be sure to lubricate the components once
a day. If the frequency of lubrication is
small, especially, worn-out of ❸, ❹ and
❺ is caused and stitch skipping or needle
breakage will occur.
❷

(4) Lubricating the looper bracket oil tank

Put oil in looper bracket oil tank ❻ until its MAX

line is reached.
In addition, when the oil surface falls below the MIN
line during daily use, add an adequate quantity of
oil.

Put oil in the looper bracket oil tank using

the oiler (smaller one) supplied with the unit
while taking care not to spilling oil around
the tank.
Oil spilled around tank can fly toward the
operator by the looper bracket operation
when the machine is running. Be sure to
wipe up the spilled oil to prevent the above.
❻

– 35 –
(5) Lubricating the needle bar and the gear section

Lubricate the components at the time of delivery or after an extended period of disuse.

❶ 1) Loosen setscrews ❶ and remove face plate ❷.

❶
2) Apply one or two drops of oil to needle bar bushing
❸, needle bar ❹ and felt ❽.
❽

❸
❹
❷

❶
❶

❶
❶

3) Loosen setscrew ❾. Remove rear cover .



❺ 4) Loosen setscrew ❺ and remove the upper face

❺ cover ❻.
❺
Remove the cover with care since the air
tube is connected with the cord.

5) Apply oil to gear lubricating felt ❼ in the sewing

❼
machine arm.
6) After lubrication, install face plate ❷ and upper face
cover ❻.

Be careful not to allow the cords to be

caught in the machine.

– 36 –
4-2. Attaching the needle

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.

The correct direction of the needle is that needle

Insert the needle
until it will go no thread guide ❶ faces the opposite side of groove of
further. the needle.

1. Use the most suitable size of needle in

accordance with the kind and thickness
of thread and kind of material to be used.
❶ 2. When changing the size of needle, be
sure to adjust the clearance between the
Groove of the needle needle and the looper. (Refer to "10-5.
Clearance between the needle and the
looper" p. 84.)

– 37 –
 4-3. Threading the machine head
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.

(1) Threading the upper thread (needle thread)

Ⓑ
Ⓒ

– 38 –
(2) Threading the lower thread (looper thread)

For the model provided with the

needle thread clamp unit

Needle thread trimmer type

Gimp

Looper thread

Thread trimmer retaining plate

1. When passing the looper thread, turn looper bracket by 180 degrees of an angle in advance.
2. In the case of the overall thread trimmer type machine, pass the looper thread through the needle
hole in the throat plate and allow the looper thread clamp to clamp it. Then, start sewing.
In the case of the needle thread trimmer type machine, allow the thread trimmer retaining plate
to clamp the looper thread and gimp. Then, start sewing.
If thread waste is clamped by the looper thread clamp or the thread trimmer retaining plate, remove
it. If sewing is carried out when the thread waste remains clamped by either of them, the looper
thread cannot be clamped properly, resulting in stitch skipping at the beginning of sewing.

– 39 –
(3) Threading the machine with gimp

In case of thin thread, insert gimp

in the gimp presser plate.

4-4. How to set the cloth on the sewing machine

❶
❶

❷
❷ ❷

1) Enter the sewing material until it comes in contact with cloth patches ❶, right and left.
2) Loosen setscrews ❷, right and left and adjust the sewing position by moving the cloth patches to and fro.

– 40 –
 5. STRUCTURE OF THE OPERATION SWITCH

5-1. Structure of the operation panel

❶ ❷ ❸ ❹

❺ ❻

❽
❼ 

❾
 




   

[Table of functions of the operation panel]

No. Name Description
❶ Sewing LED This LED goes out when the sewing machine is in data setting state
and lights up when the sewing machine is in sewing state. The status
of the LED is changed over by the Ready key.
❷ READY key This key is used to change over the status between the setting state
and the sewing state.

❸ RESET key This key is used to release the error, reset the counter or release the
threading mode.

❹ MODE key This key is used to activate the auxiliary function mode under which
the sewing mode, operation mode, pattern copy/deletion and memory
switch are set.
❺ 2-digit LED This LED displays pattern No. in the normal state and displays data
number when setting the data.

❻ 4-digit LED This LED displays cut length in the normal state and displays content
of data when setting the data. It also displays the count value on the
counter and error number etc.
❼ – key This key is used to decrement the pattern No. in the normal state and
to decrement the data number when setting the data.
❽ + key This key is used to increment the pattern No. in the normal state and to
increment the data number when setting the data.
❾ –/BACKWARD This key is used to decrement the set value of data or the count value
key on the counter when setting data. It is used to move the feed backward
by one stitch in the pause state.

– 41 –
No. Name Description
 + / FORWARD This key is used to increment the set value of data or the count value on
key the counter when setting the data. It is used to move the feed forward by
one stitch in the pause state.
 THREAD This LED lights up when displaying/setting the needle thread tension.
TENSION
LED
 THREAD This key is used to display/set the needle thread tension.
TENSION key

 COUNTER This LED lights up when displaying/setting the counter.

LED

 COUNTER This key is used to display/set the set value of the counter.
key

 THREADING This key is used to place the machine in the threading mode. (Note 1)
key

 KNIFE ON/ This key is used to change over the operation status of the cloth cutting
OFF key knife between enable/disable. The before-cut knife /after-cut knife LED
lights up/goes out. (Note 2)
 BEFORE-CUT This LED lights up when the cloth cutting knife operates as before-cut
KNIFE LED knife.

 AFTER-CUT This LED lights up when the cloth cutting knife operates as after-cut knife.
KNIFE LED

 DATA LED This LED lights up when displaying/setting the data. (Note 3)

 DATA key This key is used to display/set the pattern data. (Note 3)

Note 1 : The key is disabled immediately after the power-on. It is enabled after the completion of feed-base
origin retrieval by pressing the ready key once.
Note 2 : In the case Data No. 3 of the pattern data (before-cut knife/after-cut knife) is set to "without knife",
the Before-cut knife/After-cut knife LEDs stays off.
Note 3 : These keys are enabled only in the setting state where the sewing LED goes out.

(Reference) The 2-digit LED and 4-digit LED display data as shown below.

Numeric values 0 1 2 3 4 5 6 7 8 9

Digital display

Characters A B C D E F G H I J K L M

Digital display

Characters N O P Q R S T U V W X Y Z

Digital display

– 42 –
5-2. Temporary stop switch
This switch stops the operation of the sewing machine.

Temporary stop switch

5-3. Hand switch

[Presser switch (right) ❶]

This switch performs up/down of the presser.
Start switch lamp

[Start switch (left) ❷]

This switch performs the start of sewing.

❷ When the start switch is effective, the start

switch lamp flashes on and off.

Before starting the sewing machine, close

❶ the front cover.

5-4. Foot switch (optional)

[Presser switch ❶]
This switch performs up/down of the presser.

❷ [Start switch ❷]
This switch performs the start of sewing.

Before starting the sewing machine, close

the front cover.

– 43 –
6. HOW TO USE THE OPERATION PANEL
In the case the sewing machine stops with its needle-bar rested in any position other than the upper
end when the READY key is pressed, Error (E030) will occur to stop the sewing machine.
In this case, turn the hand pulley to move the needle bar to its upper stop position. Error (E030)
will disappear when the upper stop position is reached. In this state, press the READY key
again to light up sewing LED A .
In addition, the needle bar will automatically return to the upper stop position when you press the READY
key even in the case the needle bar is not brought to its upper stop position as long as the needle
bar rests at any position between the upper stop position and a point short of the lower dead point.

6-1. Basic operation of the sewing machine

Standard patterns of pattern numbers 90 to 99 have been factory-set at the time of shipment. Refer
to "15. STANDARD PATTERN LIST" p. 107 for pattern shapes.

A 1) Press – key ❹ or + key ❺ to select the

target pattern number B you want to sew.
❶
2) Press Ready key ❶ to light up Sewing LED
A to enable sewing. At this time, the presser foot
B comes down and the feed bar and needle retrieve
the respective origins.
❹ The presser and the feed base operate.
Be careful that hands or fingers are not
❺ being caught in them.

3) Place the sewing material under the presser foot.

Press the Presser foot switch to lower the presser
foot. Press the Start switch to start sewing.

Before starting the sewing machine, close

the front cover.

6-2. Setting the thread tension

The actual thread tension varies in accordance with the kind or thickness of thread used even when
the set value is the same. Adjust the thread tension value to the thread used. If the thread tension
set value is high, stitch skipping may be caused.

1) Press Thread tension key ❽ to light up

Thread tension LED D. The LED displays the set
❶ value of the thread tension.
2) Set the value of the thread tension C by pressing
C –/BACKWARD key ❻ or +/FORWARD key
❼.
❼ 3) The set value is stored in memory when you press
D
Ready key ❶ or press the Start switch to
❻ start sewing.
❽
4) When you press Thread tension key ❽ while
Thread tension LED D stays on, the screen returns
to the normal display.
Thread tension to be applied to the respec- If the pattern number is changed or the power
tive sections of the sewing pattern can be is turned off without taking the procedure 3),
changed separately. Refer to "9-1. Operating the set value will not be stored in memory.
procedure of thread tension compensation
of each section" p. 73.

– 44 –
6-3. Temporarily stopping the sewing machine
■ How to stop the sewing machine
1) Press temporary stop switch ❶.
2) The sewing machine stops and “E050” is displayed.
■ How to re-start
1) While "E050" is shown on the screen, press RESET
key ❷ to release the error and to restore the
screen to the display before the occurrence of the
❶ error.
2) Re-start the sewing machine using the start switch,
or press –/BACKWARD key ❻ or +/FOR-
WARD key ❼ and the feed mechanism
travels forward/backward stitch by stitch.
❷ Further, press RESET key ❷ to return the
sewing machine to the sewing start position.

1. Operation of –/BACKWARD ❻
key, +/FORWARD ❼ key or RE-
SET key ❷ cannot perform thread
trimming.
❼
2. When temporarily stopping the sewing
❻ machine during sewing and returning
the sewing machine to the start position
with RESET key ❷, draw out needle
thread, cut the thread with scissors or
the like and perform the work. The work
can be performed without applying a
forced load to needle or sewing product.

Before starting the sewing machine, close

the front cover.

– 45 –
 6-4. Performing re-sewing
Sewing can be performed without cloth-opening operation of the presser foot.
❸ If the Sewing LED stays ON, press the
❶
Ready key ❶ to turn it OFF.

1) Press Mode key ❸ to display the mode setting

screen. Press –/BACKWARD key ❻ or +/
❼
FORWARD key ❼ to display "oPEn".
2) Press Ready key ❶ to display the sewing
❻
mode setting screen.
3) Set the sewing mode to "0", "1" or "2" by pressing
–/BACKWARD key ❻ or +/FORWARD key
Step of operation
<Mode setting screen> described in 2) ❼.
4) Press Ready key ❶ to finish setting. If you
❶ ❸ press Mode key ❸, the data you have set will
be cancelled.
5) While "oPEn" is shown on the screen, press Mode
key ❸ to return to the normal display.
❼
Sewing machine operation under each sewing mode
(1) Normal mode (the sewing mode is set to "0",
❻ i.e., the power-on state)
① Press the Ready key ❶ to retrieve the origin
of the feed bar/needle bar. In the case memory switch
 No. 12 "Cloth set position selection" is set to "front", the
<Sewing mode setting screen>
feed bar travels to the near set position (memory switch
No. 23). The cloth open mechanism is closed.
② Carry out sewing with the Presser foot switch and the Start switch. When the before-cut knife operates, the
cloth open mechanism opens after the completion of the operation of the cloth cutting knife. In the case of
the after-cut knife/without knife, the cloth open mechanism opens simultaneously with the start of sewing.
The cloth open mechanism closes upon the completion of sewing.

(2) Re-sewing mode (when the Sewing mode is set to "1")

① Press the Ready key ❶ to retrieve the origin of the feed bar/needle bar. Even in the case "cloth set
position selection" is set to "front", the feed bar keeps resting at the origin of the cloth cutting knife operating
position. The cloth open mechanism remains open.
② The cloth open mechanism remains open even when sewing is performed with the Presser foot switch and
the Start switch.

(3) Cloth open mode (when the Sewing mode is set to "2")
① Press the Ready key ❶ to retrieve the origin of the feed bar/needle bar. In the case "cloth set position
selection" is set to "front", the feed bar travels to the near set position. The cloth open mechanism remains open.
② The cloth open mechanism remains open even when sewing is performed with the Presser foot switch and
the Start switch.

1. In the case the cloth cutting knife is not operated, knife operation should be prohibited by means
of the Knife ON/OFF key . Refer to "6-7. When dropping of the knife is temporarily not
desired" p. 48 for the procedure.
2. To set the material setting position to the front side, refer to "9-2. Changing the setting position
of cloth" p. 76.

Before starting the sewing machine, close the front cover.

– 46 –
6-5. Performing threading

WARNING :
Turn OFF the power after operation of steps 1) and 2), and replace needle, thread, cloth cutting
knife or hammer.

This operation cannot be carried out immediately after power-on. Carry out the following operation
after the origin retrieval of the feed bar/needle bar by pressing once the Ready key ❶.

❷ 1) Press Threading key .

① The presser foot comes down.
❶ ② In the case memory switch No. 12 “material setting
position selection” is set to the front side, the feed
base travels backward (to origin position).
③ The needle bar turns by 180 degrees of an angle
to allow threading of the needle bar from the front
of the machine head.
2) Press Threading key  again. Then, only
the needle bar returns to its origin.
 3) The parts described in the aforementioned steps
① to ③ described above are returned to the home
position by pressing Reset key ❷.

It is recommended to perform installing/ The presser and the feed base operate.
removing the presser unit after operating Be careful that hands or fingers are not being
the aforementioned step 1) and turning OFF caught in them.
the power.

6-6. How to use the counter

❷
The counter has been set to UP counter in
the state of delivery.

1) Press Counter key ❾ to light up Counter

LED E. The count value C is displayed on the LED.
C
2) Every time the sewing machine completes one
E cycle stitching, the value increases by 1 count.
❼
3) The counter value C can be changed with BACK-
WARD key ❻ or +/FORWARD key
❻
❼.
4) Press RESET key ❷ to return the counter
value to “0”.
❾
5) When you press Counter key ❾ while
Counter LED E stays on, the display on the LED is
restored to the normal display.

The counter can be used as DOWN counter as well. Refer to "9-5. Changing over the counter (DOWN
counting)" p. 76 for the procedure.

– 47 –
 6-7. When dropping of the knife is temporarily not desired

1) Press Knife ON/OFF key  to make Be-

fore-cut knife LED F and After-cut knife LED G go
out.
2) Press Knife ON/OFF key  again to light
up Before-cut knife LED F or After-cut knife LED
G to enable the operation of the knife.

1. Set enable/disable of the before-cut

knife/after-cut knife using data No. 3
"Before-cut knife/after-cut knife" of the
pattern data.
 F G 2. In the case the data No. 3 "Before-cut
knife/after-cut knife" of the pattern data
is set to "disable", the Before-cut knife
Before-cut knife After-cut knife LED and After-cut knife do not light up.
operates operates

6-8. Changing the operation mode

The sewing operation of the sewing machine can be carried out by manual operation/step operation.
❸ If the Sewing LED stays ON, press the
❶
Ready key ❶ to turn it OFF.

1) Press Mode key ❸ to display the mode setting

screen. Press –/BACKWARD key ❻ or +/
❼
FORWARD key ❼ to display "STEP".
2) Press Ready key ❶ to call the operation
❻
mode setting screen.
3) Press –/BACKWARD key ❻ or +/FORWARD
Step of operation
<Mode setting screen> key ❼ to set the operation mode to "0", "1"
described in 2)
or "2".
❷
❸ 4) Press Ready key ❶ to finish setting. If you
❶ press Mode key ❸, the data you have set will
be canceled.
5) Press Mode key ❸ when "STEP" is displayed
on the screen to return to the normal display.
❼

<Operation mode setting screen>

– 48 –
Sewing machine operation under each operation mode
(1) NORMAL mode (when the operation mode is set to "0" and the power is ON)
Operation is carried out under the normal operation mode where the cloth cutting knife is activated and a
sewing sequence such as sewing and thread trimming is carried out by operating the Presser foot switch
and the Start switch.

Before starting the sewing machine, close the front cover.

(2) MANUAL mode (when the operation mode is set to "1")

Operate the Presser foot switch to lower the presser foot. Then, the operation is carried out as described
below.
① In the case of the before-cut knife is selected, the feed base is brought to its origin, when it is not there
by operating the Start switch.
② In the case of the before-cut knife is selected, the cloth cutting knife is activated by operating the Start
switch.
③ The cloth open mechanism is opened by operating the Start switch.
④ The feed base is brought to the sewing starting position by operating the Start switch. Then, the buzzer
sounds.
⑤ Turn the pulley in the direction of the arrow. The feed base is travels stitch by stitch in conjunction with
the needle position. Keep the pulley turning until the sewing end position is reached. Then, the buzzer
sounds.It is also possible to move only the feed base by means of –/BACKWARD key ❻ or +/
FORWARD key ❼.

Be sure to turn the handwheel in the normal direction since the feed mechanism does not perform
the receding operation even when the handwheel is turned in the reverse direction.

⑥ The feed base is brought to its origin and the needle thread trimming operation is carried out by operating
the Start switch.
⑦ When the after-cut knife is selected, the cloth cutting knife is activated by operating the Start switch.
⑧ For the general thread trimming type machine, the bobbin thread trimming operation is carried out by
operating the Start switch.
⑨ The needle bar is brought to its origin and the cloth open mechanism is closed by operating the Start
switch.
⑩ To terminate sewing before it is completed, press Reset key ❷ to bring the feed base to the set
position.

Before starting the sewing machine, close the front cover.

(3) STEP mode (when the operation mode is set to "2")

After you have lowered the presser foot by operating the Presser foot switch, the sewing machine operates in
the same way as described in steps ① to ④ and ⑥ to ⑩ under (2) MANUAL mode. Only step ⑤ is different
from the MANUAL mode. In the MANUAL mode, the feed base travels stitch by stitch by turning the pulley
by hand. On the other hand, in the STEP mode, the following operation is carried out by operating the Start
switch.
⑤ The sewing machine carries out the normal sewing operation and stops at the sewing end.

Before starting the sewing machine, close the front cover.

– 49 –
 6-9. Changing procedure of the sewing pattern

A If the Sewing LED stays ON, press the

Ready key ❶ to turn it OFF.
❶

1) Press – key ❹ or + key ❺ to select the

B
pattern number B you want to sew. (The number
of pattern which is not registered is not displayed.)
❹
2) Press READY key ❶ to light up sewing LED
A and to make it possible to sew. At this time, the
❺
presser foot comes down and the feed base and
needle bar retrieve the respective origins.

The presser and the feed base operate.

Be careful that hands or fingers are not being
caught in them.

6-10. Confirming the pattern shape

A ❷ 1) Press READY key ❶ to light up sewing LED

A and to make it possible to sew. At this time, the
❶ presser foot comes down and the feed base and
needle bar retrieve the respective origins.

The presser and the feed base operate.

Be careful that hands or fingers are not being
❼
caught in them.

❻ 2) Operate the Presser foot switch to lower the presser

foot.

3) When you press –/BACKWARD key ❻ or +/FORWARD key ❼, the feed travels stitch by stitch
until the sewing end is reached. When you keep the key held pressed, the feed continuously travels.
4) After you have confirmed the pattern shape, press Reset key ❷ to bring the feed to the material setting
position.

If the START switch is pressed during confirmation of the pattern shape, sewing starts from the
position where the switch is pressed. So, be careful.

Before starting the sewing machine, close the front cover.

– 50 –
 7. SETTING PROCEDURE OF THE SEWING DATA

In the case the sewing machine stops with its needle-bar rested in any position other than the upper
end when the READY key is pressed, Error (E030) will occur to stop the sewing machine.
In this case, turn the hand pulley to move the needle bar to its upper stop position. Error (E030)
will disappear when the upper stop position is reached. In this state, press the READY key
again to light up sewing LED A .
In addition, the needle bar will automatically return to the upper stop position when you press the
READY key even in the case the needle bar is not brought to its upper stop position as long
as the needle bar rests at any position between the upper stop position and a point short of the
lower dead point.

For the standard sewing patterns No. 90 to No. 99, the sewing speed and the thread tension can be
changed. However, the pattern shape cannot be changed. To change the pattern shape, you have
to copy the pattern to a different pattern number.
Refer to "9-7. Copying the pattern data" p. 77 for the procedure.

If the Sewing LED stays ON, press the

❶ Ready key ❶ to turn it OFF.

B 1) Press – key ❹ or + key ❺ to select the

pattern number B sewing data of which you want
❹ to change. (Any number to which the pattern data
is not registered is not displayed.)
H
❺ 2) Press Data key  to light up Data LED H.
 The LED displays the set value of data.
3) Press – key ❹ or + key ❺ to select the
data number B to display the set value C of data.
4) Press –/BACKWARD key ❻ or +/FORWARD
key ❼ to set a new set value C of data.
A
5) Press Ready key ❶ to light up Sewing LED
❶ A. At this time, the sewing data is stored in memory.
At the same time, the presser foot comes down and
B C the feed base and needle bar retrieve the respective
origins.
❹ ❼
1. If you change the pattern number with-
out pressing Ready key ❶ in
❺ ❻
H the aforementioned step 5), or turn the
power off, the set value you have input
will not be stored in memory.

2. The presser and the feed base operate.
Be careful that hands or fingers are not
being caught in them.

6) Press Data key  while Data LED H stays ON to return the screen to the normal display.

It is possible to prohibit the data setting from being changed in the aforementioned step 4) by setting
memory switch No. 16 "Data setting prohibition" to "1". Refer to "13. MEMORY SWITCH" p. 101 for
the procedure.

− 51 −
＊ The data No. is stated in 2-digit LED B and the example of the set value is stated in 4-digit LED C as
shown below.
● The setting range is stated in the respective sentences.
● Corrected stitches are represented by the stitch shape as observed from the right side of the material.

Wrong side Right side

of stitching of stitching

7-1. Setting the knife No.

Set the knife No. of the same shape as that of the knife
mounted on the sewing machine.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
The No. can be set 0 to 6.
a
❻
No. a×b
The number of the cloth cutting knife which
b is provided as standard is "3". For optional
1 2.1 × 3.2
2 2.5 × 3.8 knives, refer to "11-4. Cloth cutting knife" p.
3 2.9 × 4.4
4 3.0 × 4.6 97.
5 3.2 × 5.4
6 2.7 × 5.1
0 ... Decorative 1 to 6 ... Eyelet
buttonhole buttonhole

7-2. Setting the cut length

Set the length to be cut with the knife.
Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
❼ The cloth cutting length can be set in increments of 1
mm within the range given in the table below according
to the type of sewing machine.
❻
Eyelet button Lockstitch but-
Type of sew- Type of thread
hole setting tonhole setting
ing machine trimmer
range range
Needle thread
10 to 38mm 5 to 38mm
Length trimming type
J type General
thread trim- 10 to 34mm 5 to 34mm
ming type
Needle thread
10 to 38mm 5 to 38mm
trimming type
C type General
thread trim- 10 to 34mm 5 to 34mm
ming type

1. When the cut length is changed, the number of stitches of the parallel section will automatically
change.
2. When you set the cloth cutting length, it is necessary to set a value obtained by adding a sewing
length to be extended to the length of the hammer used.
3. When sewing length is lengthened in case of taper bar length, compensation at the sewing end,
etc., the setting range of the cut length is decreased as much as the length.
Example) Cut length ＋ (plus) taper bar length ≦ 38 mm (long thread trimming)

− 52 −
7-3. Setting the cut-before/cut-after knives
Set whether the cut-before knife or the cut-after knife.
Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
❼ The knife can be set within the range given in the
table below.
Set value Cloth cutting knife operation
❻
0 Without knife
1 Before-cut knife
2 After-cut knife
Disable Before-cut After-cut
knife operates knife operates

7-4. Setting the number of stitches of the parallel section

Set the number of stitches from the parallel section to
the bottom section of eyelet.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
The number of stitches can be set, according to the
❻ cutting length, using any of the stitch lengths within the
range from 0.5 to 4 mm.
Example) In the case the cutting length is 21 mm, the
Number of stitches
number of stitches that can be set is 5 to 39.

When the number of stitches is small, the

sewing speed is automatically reduced.

7-5. Setting the number of stitches of the eyelet

Set the number of stitches of the top section of eyelet.
Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
❼ The number of stitches can be set 3 to 20 stitches.

Number of stitches
❻
When the number of stitches is small, the
sewing speed is automatically reduced.

− 53 −
7-6. Setting the cut space
Set the clearance where the knife drops in the parallel
section.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
The space can be set –1.2 to 1.2 mm in the increments
❻
of 0.1 mm.

Clearance
Clearance

7-7. Setting the eyelet space

Set the clearance where the knife drops in the eyelet

section.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.The space
can be set –1.2 to 1.2 mm in the increments of 0.1 mm.
❻

Clearance

7-8. Knife position compensation

Correct the slip between the position of knife and
sewing position.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
Setting can be performed – 0.7 to 0.7 mm in the incre-
+ ments of 0.1 mm.
❻
When the knife position in terms of the stitches is de-
sired to be placed in the rear side, set “+” (plus) value,
–– and in the front side, set “－” (minus) value.

− 54 −
7-9. Number of stitches of sewing end compensation
Number of stitches of sewing end can be increased at
the same sewing pitch.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
Without bartack �������–1 to 6 stitches
Taper bar �����������������–1 to 6 stitches
❻
Straight bar �������������� –1 to 3 stitches
Round bar ���������������–1 to the number of stitches of
round bar on the right side at the
beginning of sewing
Round bar 2 ������������0 stitch
−

7-10. Turning angle compensation

Turning angle of the eyelet section and of the parallel
section can be adjusted.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
Setting can be performed –14˚ to 14˚.
❻

7-11. Turning angle compensation at the parallel section

Turning angle of parallel section and bottom of eyelet
can be adjusted.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
If the turning angle compensation is carried out the as
❻
described in "7-10. Turning angle compensation", the
turning angle at the parallel section of a buttonhole will
be adjusted in such a way as to add this set value to
+
the compensation set in 7-10.
It is possible to set the angle compensation in the range
−
of "–14˚ ≤ turning angle compensation + turning angle
compensation at the parallel section ≤ 14˚".

− 55 −
7-12. Compensation of eyelet in lateral direction
Position on the top of eyelet can be moved to the
right- or left-hand.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
Setting can be performed –0.6 to 0.6 mm in the incre-
– + ❻ ments of 0.1 mm.

7-13. Compensation of eyelet in longitudinal direction

Shape on the top of eyelet can be expanded or con-
tracted in the longitudinal direction.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
Setting can be performed –0.2 to 0.6 mm in the incre-
❻ ments of 0.1 mm.
+

7-14. Compensation of eyelet, left in longitudinal direction

Length of the left side on the top of eyelet can be
adjusted.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
Setting can be performed –0.2 to 0.6 mm in the incre-
❻ ments of 0.1 mm.

− 56 −
7-15. Compensation of left parallel section of a buttonhole
Length from the bottom of eyelet to the left side of
parallel section can be adjusted.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
Setting can be performed －0.6 to 0.6 mm in the in-
❻ crements of 0.1 mm.
Length

7-16. Compensation of cutting space, left

The clearance where the knife drops in the left side of
the parallel section can be compensated.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
Compensation is carried out in such a way as to add
❻ this set value to the value of Data No.6 ”Cutting space
setting".
If the setting is “＋”, the clearance becomes larger than
that on the right side, and if it is “－”, the clearance
becomes smaller.
The cutting space, left can be set in increments of 0.1
Clearance
+ – mm within the range of "–1.2 ≤ cutting space + cutting
space left, compensation ≤ 1.2 mm".

7-17. Setting the needle throwing width of the right bottom of eyelet

Needle throwing width of the right side of the bottom

of eyelet can be set.
Feed base is actuated with the needle throwing to
❼ change the sewing width.
Set the knife number by means of –/BACKWARD key
❻ ❻ or +/FORWARD key ❼.
It can be set in increments of 0.1 mm within the range
of 2.5 mm ± 1.0 mm.
width

− 57 −
 7-18. Setting the needle throwing width of the left bottom of eyelet
Needle throwing width of the left side of the bottom of
eyelet can be set.
Feed base is actuated with the needle throwing to
❼ change the sewing width.
Set the knife number by means of –/BACKWARD key

❻
❻ or +/FORWARD key ❼.
It can be set in increments of 0.1 mm within the range
of 2.5 mm ± 1.0 mm.

width

7-19. Setting the needle throwing width

Needle throwing widths at the parallel section and at
taper section of a buttonhole are set.
Feed base is actuated with the needle throwing to
❼ change the sewing width.
Set the knife number by means of –/BACKWARD key

❻
❻ or +/FORWARD key ❼.
It can be set in increments of 0.1 mm within the range
of 2.5 mm ± 1.0 mm.

To change the stitch bite width for the nor-

mal use of the sewing machine, adjust the
sewing machine referring to "8-2. Adjusting
width the stitch bite width" p. 66. To change the
stitch bite width temporarily, change the set
value.

7-20. Setting the type of bartack

In this step of procedure, the type of bartack is to be set.
Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
❼ The type of bartack can be set within the range from
0 to 4 as shown in the table below.
❻ Set value Type of bartack
0 1 2 3 4 0 Without bartack
Type With- Taper Straight Round Round 1 Taper bar
out bar bar bar bar 2 2 Straight bar
bartack 3 Round bar
Shape 4 Round bar 2

S : Starting position of sewing

− 58 −
7-21. Setting the length of taper bar
Set the length of taper bar.
Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
❼ The taper bar length can be set in increments of 1 mm
in the range from 3 to 15 mm.
❻

Length

7-22. Setting the number of stitches of taper bar

Set the number of stitches of taper bar.
Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
❼ The number of stitches can be set according to the
taper bar length using the range of stitch length from
❻ 0.5 to 4 mm.
Example) When the taper bar length is 6 mm, the
number of stitches can be set in the range
from two to 12.

When the number of stitches is small, the

Number of stitches sewing speed is automatically reduced.

7-23. Setting the offset of taper bar

Set the offset amount from the center of taper bar.
Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
❼ The offset amount can be set 0.5 mm to 2.0 mm in the
increments of 0.1 mm.
❻

Offset amount

− 59 −
7-24. Setting the number of stitches of slant section of taper bar
Number of stitches of the slant section from the taper bar
to the parallel section can be set.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
The number of stitches can be set in the range from
❻ two to (the number of stitches of taper bar).

Number of stitches

7-25. Compensation of the number of stitches of the right side taper bar
Number of stitches of the right side taper bar can be
decreased and the overlapping section can be made
less.
❼ Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
❻ The number of stitches can be set in the range from –
(the number of stitches of taper bar) to 0 (zero).

Number of stitches

7-26. Setting the straight bar length

In this step of procedure, the length of straight bar is
to be set.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
The straight bar length can be set in increments of 0.1
❻ mm in the range from 2.0 to 10.0 mm.

The straight bar length should be set so that

the throat plate and the eyelet presser sup-
port plate do not interfere with each other, in
consideration of the position of the presser
plate when the cloth opening mechanism is
opened.
Length

− 60 −
7-27. Setting the number of stitches of straight bar

In this step of procedure, the number of stitches of

straight bar is to be set.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
The number of stitches can be set according to the
❻ straight bar length using the stitch length within the
range from 0.5 to 4 mm.
Example) When the straight bar length is 5 mm, the
number of stitches can be set in the range
from three to 11 stitches.

When the number of stitches is small, the

sewing speed is automatically reduced.
Number of stitches

7-28. Setting the overlapping amount of straight bar

In this step of procedure, the overlapping amount be-

tween the straight bar and parallel section is to be set.
Set the knife number by means of –/BACKWARD key
❼
❻ or +/FORWARD key ❼.
The straight bar length can be set in increments of 0.1
❻ mm in the range from 0.0 to 2.0 mm.
The cutting length should be set to a value
which is equal to or more than the length
that is obtained by adding the overlapping
length to the length of the hammer used.

Overlapping
amount

7-29. Setting the needle throwing width of straight bar

In this step of procedure, the needle throwing width of

the straight bar is to be set.
Change the stitch width by operating the feed base
❼ along with the needle throwing operation.
Set the knife number by means of –/BACKWARD key
❻ ❻ or +/FORWARD key ❼.
The needle throwing width can be set in increments of
0.1 mm within the range of 2.5 ± 1.0 mm.

Needle throwing
width

− 61 −
7-30. Setting the number of stitches of round bar
The number of stitches of the round bar is set.
Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
❼ The number of stitches can be set 4 to 20 stitches.
In the case the round bar is selected for the
❻ type of bartack, the number of overlapping
stitches at the beginning and end of sewing
can be set using Data No. 9 "Compensation
of the number of stitches at the end of sew-
ing."

Number of stitches
When the number of stitches is small, the
sewing speed is automatically reduced.

7-31. Setting the number of overlapping stitches of round bar 2

In this step of procedure, the number of overlapping
stitches of the round bar 2 at the beginning and end
of sewing is to be set.
❼ Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
❻ The number of stitches can be set 1 to 10 stitches.

Number of stitches

7-32. Setting the needle throwing width of the round bar

The needle throwing width of the round bar is set.

Change the stitch width by operating the feed base
along with the needle throwing operation.
❼ Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
❻ The needle throwing width can be set in the range of
2.5 ± 1.0 mm in increments of 0.1 mm.

Needle throwing
width

− 62 −
7-33. Setting the needle throwing width at the upper section of
eyelet bar
The needle throwing width at the upper section of
eyelet bar is set.
Change the stitch width by operating the feed base
❼ along with the needle throwing operation.
Set the knife number by means of –/BACKWARD key

❻ ❻ or +/FORWARD key ❼.
width
The needle throwing width can be set in the range of
2.5 ± 1.0 mm in increments of 0.1 mm.

7-34. Setting the reduced sewing speed for straight/round bar

The reduced sewing speed is set, which is used as
a target of speed reduction when you want to reduce
the sewing speed for straight/round bar.
❼ Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
❻ The speed reduction can be set in increments of 100
sti/min within the range from –600 to 0 sti/min.

7-35. Setting the sewing speed

Set the sewing speed of the whole sewing.
Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
❼ The sewing speed can be set 400 sti/min to 2,500 sti/
min in the increments of 100 sti/min.
❻

7-36. Setting the reduction speed of eyelet

Set the reduction speed when the sewing speed of eyelet
section is desired to be reduced.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
The speed can be set –600 sti/min to 0 sti/min in the
❻ increments of 100 sti/min.

− 63 −
7-37. Setting the soft start
Sewing speed at the sewing start can be limited.
Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
❼ The soft start can be set in the range from 0 (zero) to
six revolutions.
* Two rotations of the inner needle and outer needle
❻
correspond to one stitch.

Sewing speed per rotation can be set with memory switches Nos. 02 to 07. Refer to "13. MEMORY
SWITCH" p. 101 for the procedure.
All machines have been delivered with the speed set to 600 sti/min.

7-38. Setting the number of stitches at the beginning of sewing of thread tension
It is possible to set the number of stitches at the
beginning of sewing at the time of setting the needle
thread tension.
❼ Set the knife number by means of –/BACKWARD key
❻ or +/FORWARD key ❼.
The number of stitches can be set in the range from 0
❻
(zero) to three stitches.

7-39. Setting the number of stitches at the end of sewing of thread tension
It is possible to set the number of stitches at the end of
sewing at the time of setting the needle thread tension.
Set the knife number by means of –/BACKWARD key
❼ ❻ or +/FORWARD key ❼.
The number of stitches can be set in the range from 0
(zero) to three stitches.
❻

− 64 −
8. ADJUSTMENT OF EACH PART

8-1. Adjusting the pressure of the cloth trimming knife

WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, keep away from the looper thread trimming knife and
cloth trimming knife during the adjustment procedure.

* The pressure of the cloth trimming knife can be changed.

* Normally, the cloth trimming knife is able to cut the material with its standard pressure. However,
the pressure may be inadequate for some sewing materials and sewing conditions. In this case,
the air pressure can be set to 0.4 MPa at the maximum. Adjust the pressure to any value below
the maximum pressure.
* Air pressure has to be changed after the hammer surface and condition and mating surface of
the knife blades have been properly adjusted and carefully checked.
* The pressure value should be gradually increased from the lower value while checking whether
the knife cuts the material with each pressure value.

■ Adjusting the knife pressure

The pressure of the cloth trimming knife is adjusted
by the air pressure of the regulator for adjusting the
cloth cutting knife pressure.
The standard pressure has been factory-set at 0.35
MPa.
Set the knife pressure as low as possible
in order to maintain durability of the knife
blades and the hammer.
Excessively high pressure can cause a
chipped or nicked edge of the knife blade.
Adjust the pressure to any value below the
maximum pressure (0.4 MPa).

− 65 −
8-2. Adjusting the stitch bite width
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.

1) Open needle rocking adjustment cover ❶.

2) Turn the handwheel to bring the needle bar to its
❶ ❷
To aligned lowest position.
3) Loosen fulcrum shaft ❷ of rocking link B.
• Moving the rocking link B in the direction A increas-
es the stitch bite width.
Center of rod • Moving the rocking link B in the direction B decreas-
es the stitch bite width.
4) When the stitch bite width is determined, fix fulcrum
❷ shaft ❷ of rocking link B and close the needle
rocking adjustment cover.
Lowest
5) After adjusting the stitch bite width in the aforemen-
position
tioned steps, check the respective items of "10-2.
Timing between the needle and the looper" p.
Standard of stitch bite amount (mm) 79, "10-5. Clearance between the needle and
the looper" p. 84 and "10-7. Clearance between
Rocking amount
small the spreader and looper and the opening timing
B
of the spreader" p. 85.
2
The engraved marker dot is a standard. Make
2.5
sure of the amount by putting the needle tip
3
marks on a sheet of paper or the like for the
3.5 precise measurement.
4
Needle rocking width
2.0 to 4.0 mm A
Rocking amount
large

− 66 −
8-3. Adjusting the presser
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.

■ Adjusting the height of the presser

❶
1) Remove auxiliary presser plate cover ❶.
2) Loosen screw ❷ and adjust the height of the press-
er.

The standard presser foot height A is 13 mm.

− 67 −
 8-4. Adjusting the presser opening amount
■ How to check the cloth opening amount
1) Turn the power ON. Press the READY key
❸ to light up the sewing LED.
❶ 2) Press the knife ON/OFF key to turn off the
LED to disable the cloth trimming knife.
❹ 3) Press the presser switch and press the +/FORWARD
❶
key . Then, the cloth opener is opened and
the feed base moves to the sewing start position
and stops there.

❷ The standard adjustment value when the

cloth opener is opened is "A = 2.3 mm".

❹ 4) Press the RESET key . Then, the presser foot

❷
goes up and the cloth opener is closed to return
to its origin.
1. The standard adjustment value of the
cloth opening amount when the cloth
opener is closed is "B = 3 mm". As a re-
sult, the standard cloth opening amount
is obtained by the formula shown below:
B - A = 0.7 mm
A 2. In the case the cut-before knife is used
for sewing, in particular, the cloth open-
B
ing amount should be adjusted accord-
A
ing to the material to be sewn.
B
■ Adjustment procedure
[Adjustment of dimension A]
Insert a screwdriver from ❶ to loosen the screw. Dimension A can be adjusted by inserting the screwdriver
into hole ❷ and turning the screw placed at the bottom of the hole. Turning the screwdriver clockwise will
decrease dimension A, or counterclockwise will increase it.
[Adjustment of dimension B]
Insert a screwdriver from ❸ to loosen the screw. Dimension B can be adjusted by inserting the screwdriver
into hole ❹ and turning the screw placed at the bottom of the hole.
Turning the screwdriver clockwise will decrease dimension B, or counterclockwise will increase it.
WARNING :
The confirmation of cloth open amount can be performed by actually cutting cloth in the manual
mode. However, the cloth cutting knife works. So, be careful.

1. In the following cases, set the adjustment value A of the cloth opening amount when the cloth
opener is opened to the standard value or less. At this time, take care to prevent interference
between the related parts.
* In the case the straight bartacking length is set to more than 6 mm;
* In the case the throat plate is lifted above the standard position and the straight bartacking
length is set to longer than 5.5 mm;
* In the case the total of the cloth cutting space, correction value of cutting space, left, and
correction value of needle throwing width exceeds 1.1 mm;
* In the case the throat plate is lifted above the standard position and the total of the cloth
cutting space, correction value of cutting space, left, and correction value of needle throwing
width exceeds 0.9 mm.
2. When sewing is performed using the cut-before knife, the standard cloth opening amount may
be insufficient. Adjust the cloth opening amount according to the material to be sewn so that it
is opened sufficiently.

− 68 −
8-5. Adjusting the needle thread drawing amount
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.

■ Adjusting the drawing amount of the needle

thread at the sewing start
Carry out the adjustment with the air supplied.
Loosen screw ❷ and move thread drawing arm ❶
in direction A or B to adjust the drawing amount of
B
the needle thread.
A
❶
❷

For the standard adjustment value, dimension C is

18 mm (or 23 mm if the machine is provided with
the needle thread clamp unit).

8-6. Adjusting the thread take-up thread guide

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.

Loosen screw ❷. Move thread take-up thread guide

❶
❸ ❸ mounted on thread take-up thread guide mounting
base ❶ up and down to adjust its installing position.
For the standard adjustment, dimension A is 15.5 mm.
❷

− 69 −
 8-7. Adjusting the remaining amount of the gimp
WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, keep away from the looper thread trimming knife and
cloth trimming knife during the adjustment procedure

1) Loosen setscrew ❶. Move gimp thread guide ❷ to and fro to adjust remaining amount A of the gimp at the
end of sewing.
2) Adjust the remaining amount of the gimp, while actually sew the remainder of the material to check the
adjustment result.

There is a case where the remaining amount of gimp is not stable when sewing thread or the like
is used for the gimp. In this case, insert the gimp in the gimp presser plate ❸.

8-8. Adjusting the gimp thread tension

Loosen nut ❶ and carry out adjustment.
The standard adjustment value is 11.5 mm.
When double nut ❶ is tightened, the gimp tension
becomes higher and the length of remaining thread at
the time of looper thread trimming becomes shorter.

1. For a light-weight material or elastic

material, lower the gimp tension than
11.5 mm the standard adjustment.
❶ 2. When gimp thread tension is excessively
low or high, there is a case where the
length of remaining gimp becomes un-
stable. The standard adjustment value is
11.5 mm.

− 70 −
8-9. Needle thread clamp unit (optional)
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.

When the clamp of the needle thread clamp unit is in

the lower position, standard height A of the underside
❶ of the clamp from the top surface of presser support
plate ❷ is 6 mm.
When using a heavy-weight material or the like, the
clamp may come in contact with the material. In this
case, loosen screw ❶ and adjust the clearance be-
tween the underside of the clamp in its lower position
and the material to 2 to 3 mm.

When you have adjusted the height, check

to make sure that the clearance D provided
between the top end of the clamp and the
screw of the needle bar thread guide is 1.5
to 2 mm.

In the case the sewing machine is installed with the

D needle thread clamp unit, the position of the needle
thread drawing arm will be different from its position
without the unit.
Dimension C described in "8-5. Adjusting the needle
thread drawing amount" p. 69 is 23 mm.
(Standard dimension C is 18 mm for the sewing ma-
chine which is not provided with the needle thread
clamp unit.)
A
The length of the needle thread remaining on the nee-
dle can be adjusted by setting it on the operation panel.
It is adjusted by setting the needle thread tension.
Referring to "9-1. Operating procedure of thread
tension compensation of each section" p. 73 for
the setting procedure, call Compensation Position No.
54 on the display.
❷ When the set value (initial value: 0) is increased to a
positive value, the more the number is increased, the
shorter the remaining thread will become.
When the set value is decreased to a negative value,
on the contrary, the length of thread remaining on the
needle is increased.
The setting can be separately done on a pattern-by-pat-
tern basis.

The thread tension controller for the needle thread

clamp unit works to prevent the thread from loosening
at the end of sewing.
Turn the tension regulating knob to adjust distance B
to 15 to 16 mm.
B

− 71 −
 8-10. Adjusting the brightness of the hand lamp

The brightness of the hand lamp can be adjusted on

the operation panel.
1) Select the memory switch operation mode.
Refer to "13. MEMORY SWITCH" p. 101 for how
to operate the memory switch operation mode.
2) Press – key ❹ or + key ❺ to display mem-
ory switch No. 30.
3) Press BACK key ❻ or FORWARD key
❼ to change the set value.
Hand lamp The brightness can be set to one of 20 steps from 0
(total extinction) to 100 (maximum). The brightness
has been factory-set to 100 (maximum) at the time
of shipment.
❶
After the completion of the adjustment of brightness
to an appropriate value, press READY key
❺ ❶ to confirm the setting. Then, exit the memory
❹ ❼ switch operation mode.

− 72 −
 9. HOW TO USE THE VARIOUS FUNCTIONS

Refer to "13. MEMORY SWITCH" p. 101 for how to set the memory switches described below.

9-1. Operating procedure of thread tension compensation of each section

Thread tension of each section of the sewing shape can be individually changed.
The thread tension applied to each section of a buttonhole is the value obtained by adding the respective com-
pensated values to the needle thread tension set value (No. 40).
1) Press Thread tension key ❽ to light up
❶ Thread tension LED D. The LED displays the thread
tension set value.
B C 2) Press – key ❹ or + key ❺ to select the
❺
compensation position number B of each tension.
❹ ❼ (Refer to Appendixes 1 and 2 for the compensation
D position numbers.)

❽ ❻ 3) After the selection of the compensation position

number B, press –/BACKWARD key ❻ or
FORWARD key ❼ to input a thread tension
compensation value C.
4) The compensation value you have input is stored in memory by pressing Ready key ❶ or by oper-
ating the Start switch to start sewing.
5) When you press Thread tension key ❽ while Thread tension LED D stays ON, the screen returns to
the normal display.

When you change the pattern number or turn the power OFF without carrying out the operation
described in 4), the set value will not be stored in memory.

For the compensation position No., refer to tables 1 and 2 and Figs. 1 and 4.

[ Setting of needle thread tension ] Table1

Compensation
Setting item Description
position No.
40 Needle thread tension Needle thread tension value
41 Compensation of needle thread tension of right parallel Compensation value of needle thread tension of
section right side of parallel section
42 Compensation of needle thread tension of left parallel Compensation value of needle thread tension of left
section side of parallel section
43 Compensation of needle thread tension of top eyelet Compensation value of thread tension of top eyelet
44 Compensation of needle thread tension of right bottom Compensation value of needle thread tension of
of eyelet right bottom of eyelet
45 Compensation of needle thread tension of left bottom Compensation value of needle thread tension of left
of eyelet bottom of eyelet
46 Compensation of needle thread tension at bartack, right Refer to Table 2 "Correspondence of needle thread
tension to each type of bartack"
47 Compensation of needle thread tension at bartack, left Refer to Table 2 "Correspondence of needle thread
tension to each type of bartack"
48 Compensation of needle thread tension at bartack, right 2 Refer to Table 2 "Correspondence of needle thread
tension to each type of bartack"
49 Compensation of needle thread tension at bartack, left 2 Refer to Table 2 "Correspondence of needle thread
tension to each type of bartack"

− 73 −
Compensation
Setting item Description
position No.
50 Compensation of needle thread tension of sewing start Compensation value of needle thread tension of
sewing start
51 Compensation of needle thread tension of sewing end Compensation value of needle thread tension of
sewing end
52 Compensation of needle thread tension at the time of Compensation value of needle thread tension at
thread trimming the time of thread trimming of sewing machine ＊1
53 Compensation of needle thread tension at the time of stop Compensation value of needle thread tension at the
time of stop of sewing machine ＊2
54 (When the needle thread clamp unit is selected as an Compensation value of the needle thread tension for
option) drawing the needle thread after the needle thread
Compensation of needle thread tension for drawing clamp unit has clamped the needle thread ＊3
needle thread clamped by the needle thread clamp unit.
＊1 : Compensation value as against memory switch No. 8 (needle thread tension at the time of thread trimming)
(When the needle thread clamp unit is selected as an option)
Compensation value for memory switch No. 33 (needle thread tension for trimming clamped needle thread)
＊2 : Compensation value as against memory switch No. 10 (needle thread tension at the time of stop)
＊3 : Compensation value for memory switch No. 34 (needle thread tension for drawing clamped needle thread)

[Correspondence of needle thread tension to each type of bartack]

Table2
Type of bartack
Taper bar Straight bar Round bar Round bar 2
Compensating position
Compensation of needle thread Right side of parallel At the beginning Overlapping section at the
46 Whole
tension at bartack, right section of sewing beginning of sewing
Compensation of needle thread Left side of parallel At the end of
47 - Whole
tension at bartack, left section sewing
Compensation of needle thread Right side of linear Parallel section
48 - -
tension at bartack, right 2 slant section → Straight bar
Compensation of needle thread Left side of linear
49 - - -
tension at bartack, left 2 slant section

1. The actual thread tension varies in accordance with the kind or thickness of thread used
even when the set value of thread tension is the same. Especially, in case of thread of which
the surface is hard to slide, the thread tension becomes higher, and even when the set value
is as low as 60 to 70, the loop becomes smaller. As a result, stitch skipping may be caused.
When using plural threads, it is recommended to make a sewing pattern to which set values
of thread tension suitable for the respective threads have been inputted.
2. When the needle thread tension (No. 52) at the end of sewing is set to a high value, stitch
skipping at the end of sewing or failure of needle thread take-up may occur.

[Compensation position of taper bar] Fig. 1

Data No. 43 Compensation of needle

thread tension of top eyelet

Data No. 45 Compensation of needle thread Data No. 44 Compensation of needle thread
tension of left bottom of eyelet tension of right bottom of eyelet

Data No. 42 Compensation of needle thread Data No. 41 Compensation of needle thread
tension of left parallel section tension of right parallel section

Data No. 49 Compensation of needle thread Data No. 48 Compensation of needle thread
tension at bartack, left 2 tension at bartack, right 2
Data No. 47 Compensation of needle thread Data No. 46 Compensation of needle thread
tension at bartack, left tension at bartack, right

− 74 −
[Compensation position of straight bar] Fig. 2

Data No. 43 Compensation of needle

thread tension of top eyelet

Data No. 45 Compensation of needle thread Data No. 44 Compensation of needle thread
tension of left bottom of eyelet tension of right bottom of eyelet

Data No. 42 Compensation of needle thread Data No. 41 Compensation of needle thread
tension of left parallel section tension of right parallel section

Data No. 48 Compensation of needle thread

tension at bartack, right 2 Data No. 46 Compensation of needle thread
(One stitch from the parallel section to the tension at bartack, right
linear bartack section))

[Compensation position of round bar]

Fig. 3
Data No. 43 Compensation of needle
thread tension of top eyelet

Data No. 45 Compensation of needle thread Data No. 44 Compensation of needle thread
tension of left bottom of eyelet tension of right bottom of eyelet

Data No. 42 Compensation of needle thread Data No. 41 Compensation of needle thread
tension of left parallel section tension of right parallel section

Data No. 47 Compensation of needle thread

tension at bartack, left Data No. 46 Compensation of needle thread
tension at bartack, right

[Compensation position of round bar 2]

Fig. 4

Data No. 43 Compensation of needle

thread tension of top eyelet

Data No. 45 Compensation of needle thread Data No. 44 Compensation of needle thread
tension of left bottom of eyelet tension of right bottom of eyelet

Data No. 41 Compensation of needle thread

tension of right parallel section
Data No. 42 Compensation of needle
thread tension of left parallel
Data No. 46 Compensation of needle
section
thread tension at bartack,
right

Data No. 47 Compensation of needle thread

tension at bartack, left

− 75 −
 9-2. Changing the setting position of cloth
The setting position of the material can be changed to the front side or the sewing start position in the case of
cut-after knife/without knife.
(1) To set the material setting position at the front side for every type of knife setting, i.e., cut-before knife/
cut-after knife/without knife.
1) Set memory switch No. 12 to “1”.
2) Set the travel amount to this side using Memory switch No. 23. (Factory-set to 22 mm as standard at the time of shipment)
(2) To set the material setting position at the origin in the case of the cut-before knife, and at the sewing start
position in the case of the cut-after knife/without knife.
1) Set memory switch No. 12 to “2”.
(3) To set the material setting position at the front side in the case of the cut-before knife, and at the sewing
start position in the case of the cut-after knife/without knife.
1) Set memory switch No. 12 to “3”.
2) Set the travel amount to this side using Memory switch No. 23. (Factory-set to 22 mm as standard at the time of shipment)

9-3. Changing over the mode of the start switch

The presser comes down by the operation of the start switch only, and the sewing is continually performed.
Set memory switch No. 15 to “1”.
It is also possible to perform the normal use by lowering the presser with the presser switch and
performing sewing with the start switch. However, the presser LED of the hand switch is always
put in the state of flashing on and off.

9-4. Changing over the presser movement

It is possible that the presser returns to the set position while it is held lowered after completion of sewing.
(The presser returns to the set position while it is raised after completion of sewing in the standard state of delivery.)
1) Set Memory switch No. 20 to "1" or "2".
❶ The presser foot goes up after the feed base returns to the material setting position when Memory switch
No. 20 is set to "1".
❷ The presser foot is lifted by means of the Presser foot switch after the feed base returns to the material
setting position when Memory switch No. 20 is set to "2".
2) The presser foot is kept lowered also when the feed base is brought back to the material setting position
by means of the Reset key in such a case sewing is stopped before the end of sewing is reached by
means of the Temporary stop switch.

9-5. Changing over the counter (DOWN counting)

Set the count value and perform DOWN counting. It is possible to prohibit the start at the count value “0”.
■ Change-over to DOWN counter
1) Set memory switch No. 13 to 2.
2) When the count value reaches "0", the display flashes on and off and the Presser foot switch and the Start
switch are disabled.
3) Press RESET key and the count value returns to the initial value.
(State of standard delivery : initial value = 100)
In order to perform the start even when the count value becomes “0”, set memory switch No. 14 to “0”.
■ Setting the initial value of DOWN counter
It is necessary to set the initial value starting “Count DOWN” when using DOWN counter.
1) Press COUNTER key to display the counter.
2) Press RESET key to return the count value to the initial value.The initial value has been set to 100 in
the state of standard delivery.
3) Set the count value by means of the –/BACKWARD key or +/FORWARD key .

9-6. Changing over to the mode of the stop before cloth cut
The sewing can be temporarily stopped before performing the cloth cutting operation at the time of the pattern
sewing of cut-after knife data.
1) Set memory switch No. 21 to “1”. The sewing machine once stops after sewing and cloth cutting operation
is performed by again pressing the start switch.
It is also possible to return the sewing machine to the cloth set position without performing cloth cutting
operation by pressing RESET key .
− 76 −
 9-7. Copying the pattern data
In this step of procedure, the pattern data is to be copied.

❸ If the Sewing LED stays ON, press the

❶ Ready key ❶ to turn it OFF.

1) Press Mode key ❸ to display the mode setting

screen.
❼
Press –/BACKWARD key ❻ or +/FOR-
WARD key ❼ to display "CoPy".
❻
2) Press Ready key ❶ to display the pattern
data copying screen.

Step of operation
described in 2) 3) Press – key ❹ or + key ❺ to select the
source pattern number to be copied which is dis-
played on the 2-digit LED B.
❸
(The number for which no pattern is registered is
❶
not displayed.)

B 4) Press –/BACKWARD key ❻ or +/FOR-

C
❺ WARD key ❼ to select the destination
pattern number of copying which is displayed on
❹ ❼
the 4-digit LED C.
Indication ① is displayed when the destination pat-
❻
tern data is not registered, or ② is displayed when
it is registered. Pattern number can be set at "1" to
"89".

② In the case the destination pattern data is 5) Press Ready key ❶ to copy the pattern data
registered from the source to the destination.
If you press Mode key ❸, the pattern data
copying is cancelled.
6) When you press Ready key ❶ when the
destination pattern number is present, confirmation
screen ③ is displayed. When you press Ready key
③ At the time of confirming the overwrite
❶, the present data is overwritten. If you
❷ press Reset key ❷, the overwrite is cancelled.
❶ 7) Press Mode key ❸ while "CoPy" is displayed
to return the screen to the normal display.

Pattern numbers 90 to 99 cannot be over-

written since they are standard patterns.

− 77 −
 9-8. Deleting the pattern data
In this step of procedure, the pattern data is to be deleted.

❸ If the Sewing LED stays ON, press the

❶ Ready key ❶ to turn it OFF.

1) Press Mode key ❸ to display the mode setting

❼ screen. Press –/BACKWARD key ❻ or +/
FORWARD key ❼ to display "dEL".
❻ 2) Press Ready key ❶ to display the pattern
data deletion screen.

Step of operation
described in 2)

3) Press –/BACKWARD key ❻ or +/FOR-

❸
❶ WARD key ❼ to select the pattern number
to be deleted which is displayed on the 4-digit LED
C C. (The number for which no pattern is registered
is not displayed.)
❼ 4) When you press Ready key ❶, the confir-
mation screen ① is displayed.
If you press Mode key ❸, the pattern data
❻
deletion is cancelled.
5) When you press Ready key ❶, the pattern
data is deleted. If you press Reset key ❷, the
① At the time of confirming the deletion
pattern data deletion is cancelled.
❷
6) Press Mode key ❸ while "dEL" is displayed
❶ to return the screen to the normal display.

Pattern numbers 90 to 99 cannot be over-

written since they are standard patterns.

− 78 −
 10. MAINTENANCE

10-1. Looper thread trimming (overall thread trimmer type)

WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.
The looper trimming knife does not require re-adjust-
ment when the sewing specifications are changed.
However, the height of the looper trimming knife
position has to be adjusted in the case the knife fails
to catch and trim the looper thread after replacement
of the knife.
1) To adjust the knife height, loosen screw ❶ and
the nut located on the underside of the screw and
A change the height of screw ❶ and nut appropriately.
B * If the knife trims the gimp but fails to trim the looper
thread, the knife position is too high. Move screw ❶
❶ and nut in direction A to decrease the knife height.
* If the knife trims the looper thread but fails to trim
the gimp, the knife position is too low. Move screw
❶ and nut in direction B to increase the knife height.
2) Once the knife is positioned correctly, fix the knife by tightening screw ❶ and nut.

Whenever the knife height is changed, check to be sure that it does not interfere with other com-
ponents such as the presser plate while the sewing machine is in operation.

10-2. Timing between the needle and the looper

DANGER :
Be sure carry out the work while observing the following in order to protect against pinching of
hands, fingers and arms between the sewing machine and the bottom cover, which can result in
serious injury, when you raise the sewing machine from its home position.
• Be sure to lock the hinge stopper to firmly secure the sewing machine in its raised position.
* Read and check "3-6. Raising and returning the sewing machine" p. 16.
WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.
To adjust the looper cam, raise the machine head.
(Refer to "3-6. Raising and returning the sewing
machine" p. 16 for how to raise the machine head.)
Remove screws ❶ to remove looper cover ❷. Then,
carry out the adjustment.
After the completion of the work, attach the looper
cover.
❷

− 79 −
 To adjust the timing between the needle and the looper, adjust the needle throwing width and check
the needle bar height in advance.

The inside needle means the innermost needle entry and the outside needle means the outermost
needle entry of the needle throwing width employed for sewing an eyelet buttonhole.

1) Loosen two setscrew ❻ in the looper driving cam.

1) Bring the needle bar to the lower dead point of the
❸ ❸ inside needle. Turn looper driving cam ❸ by hand
so that the flat plane of looper driving cam ❸ faces
to the lower left at 45° to horizontal, and temporarily
45°
tighten looper driving cam setscrew ❻.
❻
When turning looper driving cam ❸, take
2) A care not to allow the hook driving shaft to
turn together.

2) Loosen setscrew ❺ in the looper driving shaft guide.

Move looper driving shaft guide ❹ up and down to
adjust so that clearance B provided between the
Needle (lower dead point of inside needle) needle and the right looper and clearance A be-
B tween the needle and the left looper are made to be
equal in both cases when the needle bar is brought
A=B
to the lower dead point of the outside needle and
when the needle bar is brought to the lower dead
point of the inside needle. Then, tighten setscrew
❺.
Needle (lower dead point of outside needle)
Take care not to damage or deform needle
❹ thread trimming spring ❻.

− 80 −
3) Needle inside 3) Adjust with looper driving cam ❸, so that the blade
point of the left looper is aligned with the center of
the needle when the needle bar goes up 3 mm from
the lower dead point of the inside needle. Then, fix

3 mm
the looper driving cam by tightening two setscrews
❻ with driving cam ❸ pressed against the part
Direction A :
located behind it.
Timing advances.

Direction B : If stitch skipping due to the loop bending

Timing retards. ❸ caused by faulty scooping of thread by the
No clearance is looper occurs when the needle throwing
provided width is 2 mm or less, shift the looper driv-
A
ing cam in direction A to change the looper
Front
Rear timing so that the left looper blade point is
located at the center of the needle when the
❻ B needle bar goes up from the inside lower
Pressed against the dead point by 2.7 to 2.8 mm.
4) part located behind
Needle outside 4) Similarly, check the position of the needle and that
Stitch bite of the blade point of the looper when the needle
width : small
bar goes up 3 mm from the lower dead point of
Stitch the outside needle. The blade point is positioned
bite width
3 mm

: large approximately in the range of the left side of the

needle. When it is outside the range, check again
steps 2) and 3).

After performing the looper timing adjust-

ment, when the stitch bite width is changed
in case of ① to ③ described below, perform
steps 1) to 4) whenever the case occurs.
① When the stitch bite width in terms of
that at the time of looper timing adjust-
ment is changed more than ±0.3 mm.
Even when the change of the stitch bite
width is within ±0.3 mm :
② When the stitch bite width is more than
3.4 mm.
③ When sewing heavy-weight materials or
overlapped section where needle is apt
to be bent.

− 81 −
 10-3. Height of the needle bar
(1) Adjusting the needle bar height
WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.

2.5 mm
❶

Loosen screw ❶ and adjust the height of the needle bar so that the top of the needle eyelet is spaced 2.5 mm
from the blade point of the looper when the needle bar ascends 3 mm from its inside lower dead point and the
needle and left looper are positioned at the inside needle scooping position.

(2) Reference height of the needle bar

For the needle bar height, take dimension A from the
❶ top end of the needle bar ❷ to the top surface of nee-
A dle bar cover ❶ shown in the left figure as reference.
❷
Dimension A at each point
Lower dead point of needle bar... 42.5 mm
(when the looper timing is 3 mm)
Looper scooping timing ... 39.5 mm
(when the looper timing is 3 mm)

Carry out the adjustment after the com-

pletion of adjustment described in "10-2.
Timing between the needle and the looper"
p. 79.

− 82 −
 10-4. Adjustment to prevent triangular stitch skipping in the
case of a narrow needle throwing width
For sewing with the narrow needle throwing width of
Throat plate
2 mm or less, the outer needle enters the left side of
Spreader, left the looper thread triangle (C section) when the outer
Outer needle needle comes down during sewing in the standard
Stitch skips when the Looper thread adjustment state. This can cause stitch skipping.
thread enters here triangle (C) In this case, carry out the following adjustment after
Looper thread the completion of the adjustment described in "10-2.
Timing between the needle and the looper" p. 79
and "10-3. (1) Adjusting the needle bar height" p.
d 82 completed.
Needle thread

Inner needle
Looper, left

1) Turn the hand pulley by hand when the looper

A
thread is hooked on the looper to lower the outer
needle.
2) Loosen setscrew ❶ in the looper driving shaft guide.
Move looper driving shaft guide ❷ upward to adjust
so that the outer needle enters the looper thread
triangle (C section) when the needle intersects the
Needle
(lower dead point of inside needle) looper, left; i.e., A is larger than B (A > B).
A guide of adjustment
A>B When the looper timing is 2.7 mm:
B
Values A and B
A = Approx. 4 mm
B = Approx. 3 mm

3) Determine the position of looper driving shaft guide

❷ so that clearance d provided between the outer
Needle needle and the looper thread is minimized. Then,
(lower dead point of outside needle)
fix the looper driving shaft guide with setscrew ❶.

Take care not to damage or deform needle

❷ thread trimming spring ❸.

Even when the outer needle enters the loop-

❶ er thread triangle (C section) by turning the
hand pulley by hand, the needle sometimes
enters outside the C section resulting in
stitch skipping during sewing. If stitch skip-
❸ ping occurs, adjust dimension d as small as
possible so that the outer thread enters C
section during sewing.

− 83 −
10-5. Clearance between the needle and the looper
WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.

The standard adjustment value of the clearance be-

❶ ❶ tween the needle and the looper is 0.03 to 0.05 mm.
Loosen looper setscrew ❶ and adjust the clearance
between needle ❷ and left looper ❸, and between
the needle and right looper ❹. Then fix the loopers
in place.
1. When the clearance between the needle
and the looper is adjusted, the spreader
height has also to be adjusted simulta-
0.03 to 0.05 mm

neously as described in "10-7. Clear-

ance between the spreader and looper
❷
and the opening timing of the spreader"
p. 85.
2. Be sure to adjust the clearance when-
ever the needle size is changed.

❸ ❹

10-6. Adjusting the needle guard

WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.

1) Loosen setscrew ❶.
❷
❸ 2) Set the clearance between needle ❷ and
❷ needle guard ❸ to –0.03 to 0.05 mm. How-
ever, the clearance should be adjusted to
❸ smaller than the clearance provided between
❶
❶ the needle and the looper.
3) Tighten setscrew ❶.
4) Check the position both at the time of needle
inside and of needle outside.
Be sure to adjust the needle guard when
the needle size is changed or when
−0.03 to the adjustment of needle and looper is
0.05 mm performed.
Adjust the clearance when needle
aligns with the looper balde point at
the inside and outside respectively.

In the case of sewing a heavy-weight

Needle Needle material, adjust the clearance provid-
inside outside ed between the needle ❷ and needle
guard ❸ to 0 (zero).

− 84 −
 10-7. Clearance between the spreader and looper
and the opening timing of the spreader
WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.

❶ ❷

B
Left Right
looper looper

❸ ❸

Loosen setscrew ❸ which fixed the looper. Then, adjust the clearance by changing the vertical position of the
looper.
● Clearance of left spreader ❶
Adjust so that clearance A of 0.1 to 0.2 mm is provided between the under surface of the top end of left
spreader ❶ and the top surface of the left looper and so that a resistance is applied to one thread when it
passes between them.
● Clearance of right spreader ❷
The allowable range of clearance B provided between the under surface of right spreader ❷ and the top
surface of right looper is 0 to 0.05 mm.
1. When the vertical position of the looper is adjusted, the clearance between the needle and the
looper has also to be adjusted simultaneously as described in "10-5. Clearance between the
needle and the looper" p. 84.
2. If the clearance provided between the spreader and the looper is outside the adjustable range,
stitch skipping and needle breakage can occur.

● Installation position of the left spreader

The center of the forked section at the top
of left spreader ❶ is aligned with the center
of the looper thread hole in the left looper.
When the top end of the left spread-
er in terms of the left looper pro-
trudes, stitch skipping will result.

Top end of the left ❷ ● Installation position of the right spreader

❶ spreader juts out 0 to 0.1mm The internal surface of the right spreader
the left looper
❷ is designed to be aligned with the inter-
nal surface of the spreader. Adjust the top
end of the spreader so that it retracts 0 to
0.1 mm from the inside of the right looper.
Left looper Center of hole in the
spreader and that of Right looper
the hole in the looper
are aligned.

− 85 −
 Loosen setscrew ❺ in the spreader stopper and
❶ ❷ adjust the position of spreader stopper ❻. Then fix
❻ ❻ the spreader in place. (Make the same adjustment
for both left/right spreaders.)

❺ ❺

To ● Timing to open/close the spreaders

aligned
In the case of the outer needle, the correct timing
is such that the left spreader completely closes at
the moment when the end face (side face) of the
needle is aligned with the top end of the left looper
Needle
while the needle bar comes down and the left looper
travels backward.
When the inner needle rests at its lower dead point,
❽ the right spreader is in the closed state.

Make sure of the width or the timing when

the stitch bite width is changed or after
performing the looper timing adjustment.

Loosen setscrew ❽ of spreader driving shaft guide

❼. Adjust the timing by moving the guide up and
down. Then, fix the spreader driving shaft guide by
❾
tightening the setscrew.

Take care not to damage or deform needle

❼ thread trimming spring ❾.

− 86 −
 10-8. Height of the throat plate

(1) Height of the throat plate

Install the throat plate at the position where top surface
❶ ❷ ❷ of the throat plate is 0.4 mm below top surface ❶

0.4 mm
of the support plate.

(2) Adjusting the height of the throat plate

The height of the throat plate should be adjusted in the following procedure.

1) Loosen screw ❸ and

shift gimp guide ❹.
❹
2) Loosen throat plate
❸ ❷ setscrew ❺ to remove
throat plate ❷.

3) Adjust the height of the

❻ throat plate by turn-
❷
ing screw ❻ located
under the throat plate
to change the screw
height.
4) Adjust the screw height
so that the height of the
❻
throat plate and that
of work clamp support
plate ❶ are adjusted
to 0.4 mm and fix the
throat plate ❷ with
its underside pressed
against screw ❻.
5) After the completion of the throat plate height, return gimp guide ❹ to its home position and tighten screw
❸.

− 87 −
10-9. Position of the presser foot
WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.

Adjust the protruding amount of presser foot, right ❹

A B from support plate, right ❺ to 0 to 0.5 mm.
Loosen two setscrews ❶ in the presser arm base and
adjust the protruding amount by moving the base in
direction A or B. After the adjustment, fix the presser
arm base by tightening the setscrews.
❶
* Adjust the presser foot, left in the manner as de-
❸ scribed above.
❷ * The front or rear inclination can be adjusted with
presser arm setscrew ❸.
❺

0 to 0.5 mm

10-10. Adjusting the knife dropping position

WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.

If the cloth trimming position deviates from the center,

❷
loosen setscrew ❶ in the knife base and adjust knife
base ❷ to the right or left.
After the adjustment, fix the knife base by tightening
setscrew ❶.

If the cloth trimming position deviates from

the center, troubles such that the finished
seam is cut at the time of trimming the cloth.
❶

− 88 −
10-11. Installing position of the needle thread trimming knife
WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.

1) The clearance between needle thread trimming

0.1 to 0.15 mm
knife ❷ and the needle is approximately 0.6 to 0.75
0.6 to 0.75 mm ❺ ❽ mm.
❶
❷ Loosen setscrew ❶ and move needle thread triming
A

knife ❷ to adjust the clearance.

2) To adjust the height of needle thread trimming knife
❷, loosen setscrew ❼ and move needle thread
trimming knife adjusting base ❸ up or down to
❸
adjust the clearance between the needle thread
trimming knife and spreader, right ❺ to 0.1 to 0.15
mm.
At this time, make sure that clearance A is provided
0 to 0.2 mm between the needle thread trimming knife and the
throat plate.
When needle thread trimming knife ❷ comes
in contact with spreader, right ❺, breakage
of components will be caused.

3) The operating position of needle thread trimming

knife ❷ is the position where needle thread trim-
ming knife ❷ juts out from throat plate ❽ by 1.2
0.6 to 0.75 mm
to 1.5 mm when needle thread trimming actuating
arm ❻ is moved counterclockwise until stopper
B ❾ of the needle thread trimming actuating arm
1.2 to 1.5 mm comes in contact with the needle thread trimming
knife actuating arm ❻.
❽ In the case adjustment is required, loosen needle
thread trimming knife actuating arm stopper B ❾,
and then adjust the screw jutting amount.
❷ 4) Adjust the overlapping amount between the bobbin
thread presser and the front end section of the
throat plate to 0 to 0.2 mm.
Adjust the overlapping amount by loosening nut ❹
and changing the jutting amount of the screw.
❸

❾
❼

− 89 −
10-12. Cleaning
WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.

Thread waste may be sewn in the

seam. To prevent this, remove
thread waste and dust from the
throat plate and the thread guide if
accumulated.

When thread waste has accumulated in the dust tray,

open front cover ❶, draw dust tray ❷ and remove the
accumulated thread waste.
After the removal of thread waste, set dust tray ❷ in
its home position and close the front cover.
❷

Draw out
❶

10-13. Draining
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.

When oil has accumulated in poly oiler ❶ installed

under the bottom cover, remove poly oiler ❶ to dis-
card the oil.

− 90 −
 10-14. Replacing consuamables
(1) Worn-out of the hammer face
WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.

Contact face of the hammer with the cloth

1) Remove the hammer and check the condition of the
cutting knife. hammer surface. (Refer to "10-14. (2) Replacing
A B C the cloth cutting knife and the hammer" p.92.)
2) When the knife mark is too deep, the knife mark is
duplicate (A of Fig. on the left side) by using another
knife or the knife mark is partially formed and not
formed on the whole surface (B of Fig. on the left
side), grind the face with an oil stone or the like so
that the knife mark becomes uniform.
Spacer
22 mm

Can be corrected
up to 0.3 mm.

Whenever the hammer is adjusted, a 0.1 to 0.3 mm spacer has to be adhered on the top surface
according to the grinding amount to adjust the height to check the sharpness of the knife blades.
If the sharpness checking proves poor sharpness, select a 0.1 to 0.3 mm spacer and place it between
the hammer and the cloth trimming arm.
The 0.1 to 0.3 mm spacer has to be purchased separately.
Part number: 40115638 SPECER_01 (Thickness: 0.1 mm)
40115639 SPECER_02 (Thickness: 0.2 mm)
40115640 SPECER_03 (Thickness: 0.3 mm)

3) When the cloth cannot be precisely cut although the hammer is properly corrected, check the state of worn-
out of the blade tip of the cloth cutting knife.

1. When replacing the knife, use a new hammer or a corrected hammer.

Breakage of the blade tip of the cloth cutting knife may occur.
2. The grinding amount of the hammer should not exceed 0.3 mm. If the knife sharpness cannot
be re-obtained by grinding it to the limit, replace the hammer with a new one.

− 91 −
(2) Replacing the cloth cutting knife and the hammer

WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.

■ Replacing the hammer

1) Loosen thumbscrew ❶ and remove hammer ❷.
❹
2) Tighten thumbscrew ❶ with the new hammer
pressed against stopper ❸.
1. Stopper ❸ is for positioning. Do not
move it.
2. Knife spacer ❺ for adjusting the knife
❺ height has been factory-placed between
❶ hammer ❷ and knife arm ❹ at the time
of shipment. When replacing the ham-
❸ mer, be sure to place female spacer ❺
❷ between the hammer and the knife arm
without exception.

Knife spacer ❺ is placed between the hammer and the knife arm for adjusting the knife height.
Three different kinds of spacers are supplied with the unit; i.e., 0.1 mm, 0.2 mm and 0.3 mm in
thickness.
* 0.1 mm thick spacer: Part number 40115638
* 0.2 mm thick spacer: Part number 40115639
* 0.3 mm thick spacer: Part number 40115640
If the knife blade and the hammer fail to engage properly with the factory-placed spacer after the
replacement of the knife or the hammer, replace the spacer with another spacer of appropriate
thickness.
Reference for the adjustment of the knife spacer height
• The top point side of eyelet buttonhole cannot be trimmed.
→ Replace the spacer with a thicker one.
• The end point side of eyelet buttonhole cannot be trimmed.
→ Replace the spacer with a thinner one.

■ Replacing the cloth trimming knife

❼
❻
1) Loosen setscrew ❽ and remove cloth trimming
knife ❼.
2) Tighten setscrew ❽ with the new knife pressed
against stopper ❻.
Do not loosen screw ❾ of stopper ❻ since
the distance from the center of needle to the
crest of the cloth trimming knife eyelet has
❾
been factory-adjusted to 54 mm.

1. After you have changed the cloth trimming knife, match the knife size and the knife number
displayed on the operation panel.
Refer to "7-1. Setting the knife No." p. 52 and "11-4. Cloth cutting knife" p. 97 for details.
2. Use the cloth cutting knife and the hammer as a set. If the cloth trimming knife and the hammer
are not used as a set, two different blade marks will be made on the material. This means that
the material cannot be cut with accuracy. As a result, breakage of the cloth trimming knife can
be caused.

− 92 −
(3) Replacing the looper thread trimming knife (overall thread trimmer type)
WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.

When the looper thread is not cut sharply, replace

the looper thread trimming knife with a new one. The
Looper thread trimming knife unit part number of the looper thread trimming knife is
40115260.

[Replacement procedure]
1) Close the air cock (refer to "3-14. Installing the air
❶
❷ hose" p. 27) to remove air.
❸ 2) Remove screw ❶, washer ❷ and square die ❸.
3) Loosen the setscrew ❽ to remove collar ❹.
4) Remove screw ❻ and washer ❺.

❽ ❹

5) Remove knife unit ❼. Assemble a new knife unit

(part number: 40115260) and fix it by tightening the
screw.
6) Open the air cock (refer to "3-14. Installing the air
❼ hose" p. 27) to supply air.

− 93 −
(4) Replacing the needle thread trimming knife
WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the bobbin thread trimming
knife and needle thread trimming knife during the adjustment procedure.

When the needle thread is not cut sharply, replace

the needle thread trimming knife with a new one. The
part number of the needle thread trimming knife is
40115277.
Refer to "10-11. Installing position of the needle
thread trimming knife" p. 89 for how to install the
knife.

(5) Changing the thread trimmer retaining plate (needle thread trimmer type)
WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.

When the looper thread and the gimp are not smoothly
❷ trimmed, replace thread trimmer retaining plate ❶ with
a new one.
Remove screws ❷ and replace the thread trimmer
retaining plate with a new one. Fix the new thread
trimmer retaining plate with two screws ❷.

(6) Standard of replacing time of the gas spring

DANGER :
There is a risk of pinching of hand, fingers and arms to cause a serious injury if you raise it
when the gas spring does not function, since the sewing machine is very heavy in weight. In
order to prevent an accident, be sure to replace the gas spring with a new one before it is too
late according to the standard of replacing time (as described below).
WARNING :
1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start
of the sewing machine.
2. To avoid unexpected personal injuries, be sure to keep away from the looper thread trimming
knife during work.

Gas spring is one of the consumables. Gas inside the gas spring
will be gone naturally even when the frequency of use is low and
the spring cannot display the thrust to secure the safety.
If a load equal to or larger than 156N is required when the sewing ma-
chine is lifted by strapping front foot section ❶ of the bed with a piece
of string as shown in the figure at the left, immediately change the
gas spring with JUKI's genuine gas spring (part number: 40100390).

1. Do not strap any section of the machine other than

front foot section ❶.
2. The gas spring has a part which is sensitive to the
lateral load when the rod section has flaws or the
gas spring has fully stretched. Carefully avoid the
gas spring being damaged and applied with exces-
sive forces during maintenance and cleaning of the
❶ sewing machine.

− 94 −
(7) Replacing the gas spring
DANGER :
Replacement work has to be carried out within the defined range by a service technician who
has full knowledge of the machine.

1) Lift the sewing machine until the hinge stopper

reaches its 4th step and let the hinge stopper lock
the sewing machine. Refer to "3-6. Raising and
returning the sewing machine" p. 16 for how
to lift the sewing machine.
DANGER :
If the hinge stopper is not locked, the
sewing machine can drop to pinch hands,
fingers and arms leading to a serious in-
jury.
Make sure that the hinge stopper is locked
with support shaft ❶.
❶ Never release the lock of the hinge stopper
until the gas spring replacement procedure
is completed.

2) Check to be sure that gas spring ❷ does not apply

force to the sewing machine. Then, remove nut ❹
from fulcrum shaft ❸. Remove fulcrum shaft ❸,
❻ washer ❺ and thrust collar ❻.
❹ ❺

❺ ❸

3) Loosen four screws ❽ which are used to fix fulcrum

shaft ❼ located below gas spring ❷. Remove ful-
crum shaft ❼.
4) Install new gas spring in the same manner as the
previous one. Reverse the removal procedure,
❷ assemble the new gas spring.

Check to be sure that the assembled screws

and nut are firmly tightened.

5) After the completion of assembly, return the sewing

machine to its home position.
Refer to "3-6. Raising and returning the sewing
machine" p. 16 for how to return the sewing
❼ machine to its home position.
❷

− 95 −
 11. EXCHANGING GAUGE PARTS AND OPTIONAL

11-1. Throat plate

A01 B01 A00 B00
Name of part * (for narrow needle (for wide needle throw- * (for narrow needle (for wide needle throw-
throwing width) ing width) throwing width) ing width)
Applicable needle
2.0 to 3.2mm 2.0 to 4.0mm 2.0 to 3.2mm 2.0 to 4.0mm
throwing width
Needle size #90 to #110
Gimp position W 1.8
W W

Shape

Part No. 40115404 40115406 40115403 40115405

For J01 and C01 types For J01 and C01 types For J00 and C00 types For J00 and C00 types
Type
Option Standard Option Standard

* Throat plate for narrow needle throwing width

Provided that the applicable needle throwing width does not exceed the maximum of 3.2 mm, it is possible to shift the
presser foot inward by 0.8 mm with respect to the standard throat plate. As a result, sewing troubles such as a stitch skipping
on the machine with a cut-before knife and seam grinning on denim can be prevented effectively.

11-2. Presser set

* The mark in [ ] parentheses shows the standard equipment for each type.
Compensating foot for Compensating foot for
Name of Edge presser for eyelet hole Edge presser for eyelet hole
eyelet buttonhole eyelet buttonhole
part 34mm 38mm 34mm 38mm

Press- [C01] [C00] [J01] [J00]

er set
Shape
(left)

Part No. 40115325 40115309 40115241 40115239

Press-
Shape
er set
(right) [C01] [C00] [J01] [J00]
Part No. 40115324 40115316 40115240 40115238

Name of Edge presser for eyelet hole Edge presser for eyelet hole For eyelet buttonhole For eyelet buttonhole
part 32mm 22mm 32mm 22mm

Press-
er set Shape
(left)

Part No. 40035239 40039844 14059604 14059802

Press-
Shape
er set
(right)

Part No. 40035238 40039843 14059505 14059703

– 96 –
 11-3. Presser holding plate
Eyelet buttonhole presser Eyelet buttonhole presser Eyelet buttonhole presser Eyelet buttonhole presser
Name of part
holding plate, left holding plate, right holding plate, left holding plate, right
Shape of hole Eyelet buttonhole Eyelet buttonhole
Stitch length 10 to 34 10 to 38

Shape

Part No. 40115322 40115323 32027104 32027005

Type For J01 and C01 types For J00 and C00 types

11-4. Cloth cutting knife

Name of part For eyelet buttonhole For decorative buttonhole

Shape

Part No. X Y L Remarks

Y
Provided as standard 40115664 2.8 4.3 26
Only for the sewing machine provided 40115665 2.8 4.3 38

L
with the needle thread trimmer
32063604 2.9 4.4 24
32063703 2.9 4.4 32
Only for the sewing machine provided 32063802 2.1 3.2 38
with the needle thread trimmer
Eyelet
32063901 2.1 3.2 24
buttonhole
32064008 2.1 3.2 32
Optional
32064107 3.2 5.4 38
spacer is
32064206 3.2 5.4 24
used *1
32064305 3.2 5.4 32
Only for the sewing machine provided 32066904 2.7 5.1 38
with the needle thread trimmer
14041404 0 0 38
Decorative
32065302 0 0 24
buttonhole
32065401 0 0 32

*1 Part number of the optional spacer is 40115728. Optional spacer

Adhere the optional spacer and the cloth trimming knife
with each other with their holes aligned so as to prevent
the holes are covered.

Holes are
aligned

Cloth trimming knife

– 97 –
 11-5. Hammer
Name of part For eyelet buttonhole Name of part For decorative buttonhole

Shape Shape

Size (mm) Part No. Remarks Size (mm) Part No. Remarks
38 40115670 38 14042501
26 [J accessories] 40115669 36 32064404
22 [C accessories] 40115668 34 32064503
20 [J] 40115667 32 14042600
16 [C] 40115666 30 32064602
38 32067209 28 32064701
36 32067308 26 14042808
Optional spac-
34 32067407 24 32064800
er is used *2
32 32067506 22 14042907
30 32067605 20 32064909
28 32067704 18 32065005
26 32067803 Optional 16 14043103
24 32067902 spacer is 14 32065104
22 32068009 used *2 12 32065203
20 32068108 10 14043301
18 32068207
(The mark in [ ] parentheses shows the standard equipment
16 32068306
for each type.)
14 32068405
12 32068504
10 32068603

1. *2 Part number of the optional spacer is 40115639. Adhere

Use the optional spacer with adhered on the installing plane the spacer
of the hammer. Hammer

2. In the case the knife height is not correct with the spacer
factory-adhered on the knife installing plane of the knife arm,
replace the spacer with the one supplied with the unit as an
accessory. Knife arm
Refer to "10-14. (2) Replacing the cloth cutting knife and the
Change the
hammer" p.92 for the spacer supplied with the unit. spacer

11-6. Others
Name of part Foot pedal switch (asm.) Foot pedal switch junction cable (asm.)

Shape and
application

Operation of the sewing machine This is used for connecting the foot
is performed by foot pedal. pedal switch (asm.).
Part No. 40033831 40114433

– 98 –
 12. TROUBLES AND CORRECTIVE MEASURES IN SEWING
Phenomenon Cause Corrective measure Page
1. Stitch skipping • The needle is bent. There is a scratch on the • Check and replace the needle. 37
needle. The needle is incorrectly attached.
• Kind of needle is wrong. • Use DO x 558 needle. 1
• The clearance between the needle and the looper • Adjust the clearance at the time of inside needle or 84
is too large. outside needle.
• The clearance between the needle and the needle • Check and adjust the clearance. 84
guard is too large or the needle and the needle
guard come in excessive contact with each other.
• The clearance between the needle and the looper • Adjust the center of the needle. -
varies according to the turning angle (0˚, 90˚ and
180˚).
• Improper adjustment of the timing between the • Adjust the timing with the stitch bite width used. 79
needle and the looper
• Improper adjustment of the timing to open/close • Adjust the timing to open/close the spreader by the 86
the spreader. stitch bite width used.
The spreader comes in contact with the needle.
• Motion to open/close the spreader is not smooth. • Remove the cloth waste from the spreader. Replace 85, 86, 90
the spreader with a new one.
• The clearance between the presser foot and the • Check the clearance and properly adjust it. 68、88
needle entry point is too large.
• Thread tension is not proper. • Set the thread tension to the proper value. 44、73
• The blade point of looper has worn out. • Correct the looper with oil-stone or the like, or 84
replace it with a new one.
• Improper adjustment of the height of the needle • Check the height of the needle bar and properly 82
bar adjust it.
• Loop cannot be scooped since it is not formed. • Check the height of the needle bar and properly 82
adjust it.
• When changing • Improper adjustment of the clearance between the • Adjust the clearance at the time of inside needle or 84
needle size needle and the looper outside needle with the needle size used.
• Improper adjustment of the timing to open/close • Adjust the timing to open/close the spreader with 86
the spreader. the needle size used.
The spreader comes in contact with the needle.
• The needle does not fit the kind of throat plate • Use the throat plate suitable for the needle. 96
(needle size used).
•When kind of • Thread which is difficult to make loops is used. • Decrease the needle thread tension. 44
thread is affected (Hard-to-slide thread or the like) • Reduce the sewing speed of the sewing machine. 63
•When sewing • The needle is bent at the thick section of the ma- • Change the needle to a thicker one. Adjust the stitch 37
heavy-weight ma- terial and stitch skipping occurs. base line offset.
terials • In case of the cut-before knife, the inside needle • Re-set the cut space. 54、57
is bent at the cutting section and stitch skipping
occurs.
2. Stitch skipping at • The left-hand spreader is installed incorrectly. • Check the installing position and adjust it. 85
the sewing start • The timing of the right-hand looper is too early. • Check the timing between the needle and the 79
looper, and adjust it.
• The clearance between the presser foot and the • Check the clearance and adjust it. 68, 88
needle entry point is too large.
• The looper is bent. There are scratches on the • Check the looper and replace it with a new one. 79
looper.
• Length of the needle thread remaining on the • Properly adjust the needle thread drawing amount. 69
needle is too short.
• Looper thread clamp/looper thread presser is • Check the needle clamp pressure. 89
weak and the looper thread comes off at the start
of sewing.
3. Stitch skipping at • The clearance between the presser foot and the • Check the clearance and adjust it properly. 68, 88
eyelet section needle entry point is too large.
• The cloth is flopping. • Decrease the sewing speed of eyelet section. 63
Adjust the position of the presser foot. 88
• Needle thread loop is too large and falls. • Adjust the height of the needle bar. 82
As a result, it is not caught by the looper. Adjust the looper timing. 79
• Needle thread loop cannot be made. • Adjust the height of the needle bar. 82
As a result, the looper cannot catch the thread. Adjust the looper timing. 79
4. Seam splitting at the • The feeding amount of needle thread is insufficient. • Adjust the feeding amount of needle thread. 69
sewing end
• The timing of the right-hand looper is too late. • Check and adjust the timing between the needle 79
and the looper.
• The opening amount of the right-hand spreader is • Check and adjust the opening amount of the spread- 86
insufficient. er.
• The gimp is too hard. • Replace the gimp. Check the thread path of gimp. 40, 70
5. Needle thread break- • The needle thread tension is too high. • Adjust the sewing conditions to obtain an appropri- 44, 73
age ate thread tension.
• The needle comes in contact with the blade point • Check and adjust the clearance. 84
of the looper.
• The thread paths in the needle, loopers, spreaders, • Check and replace the respective parts. 37, 84, 85
throat plate, etc. have become worn out or contain
scratches.
• The thread is too thick or too thin for the needle. • Replace the needle with a proper one. 37
• There are scratches in the needle hole or needle • Check and replace the needle. 37
slot.

– 99 –
 Phenomenon Cause Corrective measure Page
6. L o o p e r t h r e a d • The looper thread tension is too high. • Adjust the sewing conditions to obtain an appropri- 44, 73
breakage ate thread tension.
• The installing position of the left-hand spreader • Check and adjust the installing position. 85
is incorrect.
• Refer to “5. Needle thread breakage” for details on
other causes and corrective measures
7. Needle breakage • The needle interferes with looper, spreader, etc. • Adjust the clearance between the looper and the 84 to 86
needle properly. Adjust the timing to open/close the
spreaders properly.
• The needle comes in contact with the presser foot. • Check and adjust the clearance. 68, 88
• The clearance between the needle and the looper • Adjust the center of the needle. -
varies according to the turning angle (0˚, 90˚ and
180˚).
• The clearance between the needle and the needle • Check and adjust the clearance. 84
guard is too large or the needle and the needle
guard come in excessive contact with each other.
• The height of the needle bar has been improperly • Check and adjust the height of the needle bar. 82
adjusted.
• The needle thread • Needle thread is depressed by the presser foot at • Properly adjust the needle thread drawing amount. 69
clamp unit is not the start of sewing.
installed.
8. S t i t c h e s a t t h e • The left- and right-hand sewing pitches at the • Compensate the length by lengthwise compensa- 57
straight section of straight section are different from each other. tion of left parallel section of the data compensation.
the buttonhole are • The left- and right-hand positions at the straight • Compensate the position by lengthwise compen- 57
not uniform. section are different from each other. sation of left eyelet of the data compensation.
• Stitches which should be parallel are slant. • Compensate the inclination by turning compensa- 55
tion of parallel section of the data compensation.
9. The left- and right- • The left- and right-hand side cloth opening • Adjust so that the left- and right-hand side cloth 68
hand sides of the amounts are not equal. opening amounts are equal.
seam at the straight • Improper adjustment of the knife dropping position • Check and adjust the knife dropping position. 88
section of the but- • There is shrinkage of cloth by sewing or step • Individually set the left- and right-hand sides of cut 54, 57
tonhole are not uni- difference between left- and right-hand sides of space.
form. cloth.
10. The shape of the • The seam is tilted. • Set the turning compensation/parallel section turn- 55
eyelet is deformed. ing compensation.
• The cloth is deformed by the seam. • Set the eyelet crosswise compensation/lengthwise 56
compensation.
• Improper adjustment of the knife dropping position • Check and adjust the knife dropping position. 88
• The cloth at eyelet section is flopping. • Adjust the position of the presser foot. 88
• The gimp is moved to the inside needle side. • Replace the throat plate with the optional one. 96
11. The seam is cut by • The clearance between the cloth cutting knife and • Check the cut (eyelet) space and re-set it. 52,
the cut-after knife. the needle is too small. 54 to 57
• Improper adjustment of the knife dropping position • Check and adjust the knife dropping position. 88
• There is shrinkage of cloth by sewing or step • Individually set the left- and right-hand sides of cut 54, 57
difference between left- and right-hand sides of space.
cloth.
12. Needle thread can- • The needle thread trimming knife is dull. • Grind the knife or replace it with a new one. 73, 89, 94
not be trimmed. • The stroke of the needle thread trimming knife is • Check and adjust the stroke. 89
incorrect.
• The needle thread trimming knife does not catch • Adjust the installing position (clearance between 89
needle thread. needle and knife) of the knife.
• The last stitch has skipped. • Refer to “1. Stitch skipping”. -
• Installing position of the moving blade is incorrect. • Check and adjust the moving blade and the thread 89
separating position.
13. Looper thread can- • The knife is dull. • Grind the knife or replace it with a new one. 93
not be trimmed. • The knife position is wrong. • Properly adjust the knife position. 79
14. The cloth cannot be • Doubling the planes of the knife and the hammer • Correct the surface of the hammer with oil stone or 91
cut sharply. is incorrect. the like.
• The knife is dull. • Grind the knife or replace it with a new one. 92
• The knife pressure is inadequate. • Re-set the knife pressure. 65
• Chip has collected. • Remove the chip. 92
• Knife pressure is too high and the knife blade has • Set proper knife pressure to each sewing product 65, 92
broken. after replacing the knife.
15. Breakage of looper/ • The clearance between the needle and the looper • Adjust the center of the needle. -
spreader varies according to the angle (0˚, 90˚ and 180˚).
• The clearance between the needle and the needle • Check and adjust the clearance. 84
guard is too large or the needle and the needle
guard come in excessive contact with each other.

– 100 –
13. MEMORY SWITCH

13-1. Operating procedure

In this step of procedure, the Memory switch setting is to be carried out.

❸ If the Sewing LED stays ON, press the

Ready key ❶ to turn it OFF.
❶

1) Press Mode key ❸ to display the mode setting

screen. Press –/BACKWARD key ❻ or +/
❼ FORWARD key ❼ to display "MEM".
2) Press Ready key ❶ to display the memory
❻ switch setting screen.

3) Press key ❹ or key ❺ to select the memory

Step of operation switch number displayed on 2-digit LED B.
described in 2) 4) Press –/BACKWARD key ❻ or +/FOR-
❷ ❸ WARD key ❼ to change the set value dis-
played on 4-digit LED C. It is also possible to return
❶ the set value to the standard one by pressing Reset
key ❷.
B C 5) When you press Ready key ❶, the set value
of the memory switch is stored in memory.
❹ ❼ 6) When you press MODE key ❸, the memory
switch setting is finished to return to the "MEM"
❺
❻ display.
7) Press Mode key ❸ while "MEM" is displayed
to return the screen to the normal display.

5) The set value will not be stored in memory unless step of procedure 5) is performed in the fol-
lowing cases:
* Step of procedure 3) is carried out to change the memory switch number;
* Step of procedure 6) is carried out to terminate the memory switch setting;
* Power to the machine is turned OFF.

– 101 –
 13-2. Memory switch list
Setting Setting Initial
No. Function Description
range unit value
400 to 100
01 Max. sewing speed Max. sewing speed is set 2,500
2,500 sti/min
02 Soft-start speed setting Limited speed at the sewing start of the sewing machine is 400 to 100
600
1st stitch (Inside needle → outside needle) set. From inside needle to outside needle of 1st stitch 1,200 sti/min
03 Soft-start speed setting Limited speed at the sewing start of the sewing machine is 400 to 100
600
1st stitch (outside needle → inside needle) set. From outside needle to inside needle of 1st stitch 2,500 sti/min
04 Soft-start speed setting Limited speed at the sewing start of the sewing machine is set. 400 to 100
600
2nd stitch (inside needle → outside needle) From inside needle to outside needle of 2nd stitch 2,500 sti/min
05 Soft-start speed setting Limited speed at the sewing start of the sewing machine is set. 400 to 100
600
2nd stitch (outside needle → inside needle) From outside needle to inside needle of 2nd stitch 2,500 sti/min
06 Soft-start speed setting Limited speed at the sewing start of the sewing machine is 400 to 100
600
3rd stitch (inside needle → outside needle) set. From inside needle to outside needle of 3rd stitch 2,500 sti/min
07 Soft-start speed setting Limited speed at the sewing start of the sewing machine is 400 to 100
600
3rd stitch (outside needle → inside needle) set. From outside needle to inside needle of 3rd stitch 2,500 sti/min
08 Needle thread tension at the time of thread Needle thread tension at the time of trimming the needle
0 to 200 1 0
trimming thread is set.
10 Needle thread tension at the time of stopping Needle thread tension at the time of trimming the looper thread
0 to 200 1 60
or stopping the sewing machine is set.
12 Set position selection Position of presser when setting cloth is selected.
0 : Origin position
1 : Front position
2 : Origin when the cut-before knife is used; Sewing start
position when the cut-after knife is used/knife is not
0 to 3 1 0
installed
3 : Front side when the cut-before knife is used; sewing
start position when the cut-after knife is used/knife is not
installed
(Position is set at No. = 23.)
13 Production counter selection Operation of production counter is selected.
0 : Without
0 to 2 1 1
1 : UP counter (“＋1” per sewing cycle)
2 : DOWN counter (“－1” per sewing cycle)
14 Selection of starting when production counter Whether prohibiting starting at count value “0” when produc-
is “0” tion counter is set to DOWN counter is selected.
0 : Starting permitted even when production counter value 0 to 1 - 1
is “0”
1 : Starting prohibited when production counter value is “0”
15 Start switch One-touch startup selection Enable/disable of the startup only by means of the start
switch is selected.
0 : Presser foot is brought to the lower position by means of
the presser foot switch and the sewing machine is started
0 to 1 - 0
by means of the start switch
1 : Presser foot is brought to the lower position and the
sewing machine is started by means of the start switch
(The presser foot switch is also enabled.)
16 Pattern data setting prohibition Whether or not the pattern data setting is prohibited is
selected.
0 to 1 - 0
0 : Setting is enabled
1 : Setting is prohibited (Thread tension can be set)
17 Thread tension compensation setting pro- Whether or not the thread tension compensation value is set
hibition under the ready state is selected.
0 to 1 - 0
0 : Setting is enabled
1 : Setting is prohibited
18 Pattern data deletion prohibition Whether or not the pattern data deletion is prohibited is
selected.
0 to 1 - 0
0 : Deletion is enabled
1 : Deletion is prohibited
19 Looper thread trimming operation selection (Only for the general thread trimming type machine) Whether
or not the looper thread trimming operation is carried out is
selected. 0 to 1 - 1
0 : Not performed
1 : Performed
20 Presser foot lowering at the time of returning Whether or not the feed base returns to the setting position
to the setting position with the presser foot lowered after sewing is completed.
0 : The feed base returns to the setting position with the
presser foot lifted.
1 : The feed base returns to the setting position with the
presser foot lowered, and the presser foot goes up at 0 to 2 - 0
the setting position
2 : The feed base returns to the setting position with the
presser foot lowered, and the presser foot is brought to
the upper position at the setting position by means of the
presser foot switch.

– 102 –
 Setting Setting Initial
No. Function Description
range unit value
21 After-cut knife temporary stop selection Whether or not the machine is stopped before the after-cut
knife operates and the cloth cutting knife is operated by means
of the start switch is selected
0 : Normal operation 0 to 1 - 0
1 : The sewing machine automatically stops before the
after-cut knife operates, and the knife is operated by
means of the start switch.
22 Cloth opening mechanism selection for straight Whether or not the sewing of a pattern including the straight
bar pattern bar is performed with the cloth opening mechanism held
opened.
0 : Normal operation 0 to 1 - 0
1:
Material is placed on the sewing machine with the cloth
opening mechanism held opened.
23 Front setting position Position relative to the origin is set when "front position" is
0 to 54 1mm 22
selected for No. 12 is set.
24 Needle thread clamp unit operation selection (When the needle thread clamp unit is selected as an option)
Selection of whether the needle thread clamp unit is operated
0 : Not operated
1 : Operated (needle thread is clamped with the feed 0 to 2 - 1
stopped)
2 : Operated (needle thread is clamped without the feed
stopped)
25 Number of stitches to lift needle thread (When the needle thread clamp unit is selected as an option)
clamp unit The number of stitch at which the needle thread clamp unit 0 to 20 1 stitch 14
goes up is set.
26 Travel amount of needle thread clamp unit (When the needle thread clamp unit is selected as an option)
The distance (unit : mm) by which the needle thread clamp unit 0 to 40 1mm 10
travels from the end of sewing, before the unit is closed is set.
30 LED lamp dimming setting LED lamp brightness is set with percentage (%) 0 to 100 5% 100
31 Selection of needle thread clamp unit opening (When the needle thread clamp unit is selected as an option)
amount 0 : Goes up with opened when going up at the start of sewing 0 to 1 - 1
1 : Goes up with closed when going up at the start of sewing
32 Needle thread clamp unit lowering timing at (When the needle thread clamp unit is selected as an option)
1 Needle
the end of sewing The number of needle entry at which the needle thread clamp 0 to 4 3
entry
unit comes down at the end of sewing is set.
33 Needle thread tension when the needle thread (When the needle thread clamp unit is selected as an option)
clamp trims the needle thread. The needle thread tension value when the needle thread 0 to 200 1 2
clamp operates to trim the needle thread is set.
34 Needle thread tension when the needle thread (When the needle thread clamp unit is selected as an option)
clamp draws the needle thread The needle thread tension value of the needle thread clamp
0 to 200 1 150
unit when it operates to draw the needle thread after it has
been trimmed is set.

– 103 –
14. ERROR LIST
No. Description How to reset
007 Sewing machine motor error Turn OFF the power.
Sewing machine motor doses not run or signal does not enter even when
it is running.
008 Machine head memory error Model type, memory switch data and standard
In the case data on the machine head memory has broken (Note 4) patterns are initialized after pressing the reset
key.
030 Needle UP error Upper position detection by turning handwheel
When the needle bar is not in the upper position of the inside needle side by hand
031 Air pressure lowering error Supply air and press the RESET key.
When air pressure is lowered
045 When data of memory switch has broken Pattern data will be initialized after pressing
Pattern data error the RESET key.
050 Temporary stop switch RESET key
In the case the temporary stop switch is pressed while the sewing machine
is in operation
060 Backup memory error Backup data will be initialized after pressing
When backup data such as pattern No. or the like has not been stored in the RESET key.
memory
061 Memory switch error Memory switch data will be initialized in ma-
When data of memory switch has broken chine model setting after pressing the RESET
key.
302 Head safety switch error Return the machine head to its home position
When the sewing machine is operated with machine head raised and press the RESET key.
303 Sewing machine Z-phase error Turn OFF the power.
In the case Z-phase (upper dead point) of sewing machine cannot be
detected
396 Looper thread cutting knife operation error Remove the cause of error and press the RE-
In the case the looper thread trimming knife return sensor stays on when SET key.
the looper thread trimming is carried out
397 Cloth cutting knife intermediate position error Remove the cause of error and press the RE-
In the case the cloth cutting knife intermediate position sensor does not SET key.
turn on when the cloth cutting knife operates
398 Cloth cutting knife upper position error Remove the cause of error and press the RE-
In the case the cloth cutting knife upper position sensor stays off when the SET key.
sewing machine operates and the cloth cutting knife operates
399 Looper thread trimming knife return error Remove the cause of error and press the RE-
When the sewing machine is in operation, when the bobbin thread trimmer SET key.
is in operation or when the bobbin thread trimmer return sensor is in the
off state
496 Thread tension setting range error Change the thread tension after pressing the
Outside of setting range error at the time of thread tension setting (Note 1) RESET key.
497 Data setting sewing length error Change the data after pressing the RESET key.
Sewing length is over the sewing possible area at the time of data setting
(Note 2)
498 Data setting range error Change the data after pressing the RESET key.
Outside of setting range error at the time of data setting (Note 3)
499 Pattern type error Pattern is changed and/or pattern is deleted
The model type does not match the pattern type (Note 4) after the reset key is pressed.
703 Model error Turn OFF the power.
In the case the operation panel is connected to an unexpected sewing
machine
704 Version error Turn OFF the power.
In the case of system version mismatching (Between the operation panel,
MAIN PWB and SDC PWB)
710 System error Turn OFF the power.
In the case the system is faulty.
730 Faulty main shaft motor encoder Turn OFF the power.
In the case the sewing machine encoder is faulty.

– 104 –
No. Description How to reset
731 Faulty main shaft hole sensor/position sensor Turn OFF the power.
In the case the hole sensor/position sensor of the sewing machine is faulty
733 Reverse rotation of main shaft motor Turn OFF the power.
In the case the main shaft motor rotates in the reverse direction of rotation
750 Emergency stop switch Turn OFF the power.
In the case the ON signal of the emergency stop switch is detected
811 Overvoltage Turn OFF the power.
In the case the input supply voltage is equal to or more than the specified
value
813 Low voltage Turn OFF the power.
In the case the input supply voltage is equal to or less than the specified
value
820 24 VDC power supply off Turn OFF the power.
In the case the 24 VDC supply voltage is equal to or less than the specified
value
901 Faulty main shaft motor IPM Turn OFF the power.
In the case the SDC PWB IPM is faulty
903 Faulty 85 VDC supply voltage Turn OFF the power.
In the case the 85 VDC supply voltage falls out of the specified range
904 Faulty 24 VDC supply voltage Turn OFF the power.
In the case the 24 VDC supply voltage falls out of the specified range
905 Faulty SDC PWB temperature Turn OFF the power.
Re-turn ON the power supply after a certain period of time
907 Lateral-direction motor origin sensor error Turn OFF the power.
In the case the lateral-direction origin sensor does not change at the time
of origin retrieval
908 Longitudinal-direction motor origin sensor error Turn OFF the power.
In the case the longitudinal-direction origin sensor does not change at the
time of origin retrieval
914 Fault feed error Turn OFF the power.
In the case synchronism between the sewing machine and the feed is not
achieved
915 Communication error between the operation panel and the MAIN PWB Turn OFF the power.
Communication between the operation panel and the MAIN PWB cannot
be carried out
916 Communication error between the MAIN PWB and SDC PWB Turn OFF the power.
Communication between the MAIN PWB and SDC PWB cannot be carried
out
918 Faulty temperature of MAIN PWB Turn OFF the power.
Re-turn ON the power supply after a certain period of time
926 Lateral-direction motor out-of-position error Turn OFF the power.
In the case the lateral-direction motor is out of position
927 Longitudinal-direction motor out-of-position error Turn OFF the power.
In the case the longitudinal direction motor is out of position.
931 Lateral-direction motor overload error Turn OFF the power.
In the case the lateral-direction motor is overloaded
932 Longitudinal-direction motor overload error Turn OFF the power.
In the case the longitudinal-direction motor is overloaded
946 Machine head memory writing error Turn OFF the power.
In the case data cannot be written on the memory of INT PWB
997 Rotating motor overload error Turn OFF the power.
In the case the rotating motor is overloaded
998 Rotating motor out-of-position error Turn OFF the power.
In the case the rotating motor is out of position
999 Rotating motor origin sensor error Turn OFF the power.
In the case the rotation origin sensor does not change at the time of origin
retrieval

– 105 –
Note 1 : Set the thread tension within the range of 0 ≦ thread tension ＋ compensation value of thread
tension ≦ 200.
Note 2 : L = cut length ＋ taper bar length ＋ Crosswise compensation of left eyelet ＋ Crosswise com-
pensation of left parallel section ＋ compensation of number of stitches at sewing end
Set the above length within the range described in the table below.

Type Thread trimming type J type, C type

MEB3810J00/MEB3810C00 Needle thread trimming type 10 ≦ L ≦ 38 (mm)
MEB3810J01/MEB3810C01 General thread trimming type 10 ≦ L ≦ 34 (mm)

Note 3 : Set the data within the range below.

Sewing speed － (minus) eyelet reduced speed ≧ 400
Number of stitches of slant taper bar ≦ number of stitches of taper bar
Compensation of number of stitches of right taper bar ≦ number of stitches of taper bar
–14 ≦ compensation of turning ＋ compensation of turning at parallel section ≦ 14
–1.2 ≦ cut space ＋ compensation of left cut space ≦ 1.2
Note 4 : If you replace the MAIN PWB and/or INT PWB, carry out the model setting. At this time, patterns of
pattern numbers 1 to 89 are not deleted. Refer to the Engineer's Manual for the model setting.

– 106 –
 15. STANDARD PATTERN LIST
Data J type Pattern No. C type Pattern No.
Setting item
No. 90 91 92 93 94 95 96 97 98 99 90 91 92 93 94 95 96 97 98 99

Shape

1 Knife No. 3 3 3 3
2 Cut length 21 20 22 21 22 27 26 28 27 28 17 16 18 17 18 23 22 24 23 24
3 Cut-before/cut-after
2 1 2 2 1 2 2 1 2 2 1 2
knife
4 Number of stitches of
17 16 18 17 18 23 22 24 23 24 13 12 14 13 14 19 18 20 19 20
parallel
5 Number of stitches of
9 9 9 9
eyelet
6 Cut space 0.3 0.0 0.3 0.3 0.0 0.3 0.3 0.0 0.3 0.3 0.0 0.3
7 Eyelet space 0.4 0.0 0.4 0.4 0.0 0.4 0.4 0.0 0.4 0.4 0.0 0.4
8 Compensation of knife
0.0 0.0 0.0 0.0
position
9 Compensation of num-
ber of stitches at sew- 0 0 0 0
ing end
10 Compensation of turn-
0 0 0 0
ing
11 Compensation of turn-
0 0 0 0
ing at parallel section
12 Lengthwise compensa-
0.0 0.0 0.0 0.0
tion of eyelet
13 Crosswise compensa-
0.0 0.0 0.0 0.0
tion of eyelet
14 Crosswise compensa-
0.0 0.0 0.0 0.0
tion of left eyelet
15 Crosswise compensa-
0.0 0.0 0.0 0.0
tion of left parallel
16 Left cut-space com-
0.0 0.0 0.0 0.0
pensation
17 Setting of stitch bite
width of right bottom 2.5 2.5 2.5 2.5
of eyelet
18 Setting of stitch bite
width of left bottom of 2.5 2.5 2.5 2.5
eyelet
19 Setting of stitch bite
2.5 2.5 2.5 2.5
width
20 Type of bartack 1 2 3 0 1 2 3 0 1 2 3 0 1 2 3 0
21 Length of taper bar 6 6 6 6
22 Number of stitches
5 5 5 5
of taper bar
23 Taper bar offset 1.2 1.2 1.2 1.2
24 Number of stitches of 3 3 3 3
slant taper bar
25 Compensation of num-
ber of stitches of right 0 0 0 0
taper bar
26 Straight bar length 5.0 5.0 5.0 5.0
27 Number of stitches of 6 6 6 6
straight bar
28 Overlapping amount of
1.5 1.5 1.5 1.5
straight bar
29 Needle throwing width
2.5 2.5 2.5 2.5
of straight bar
30 Number of stitches of
5 5 5 5
round bar
31 Number of overlapping
2 2 2 2
stitches of round bar 2
32 Needle throwing width
2.5 2.5 2.5 2.5
for round bartack
33 Needle throwing width
2.5 2.5 2.5 2.5
at the top of eyelet
34 Speed reduction of
straight bar/round bar 0 0 0 0
35 Sewing speed 1800 1800 1800 1800
36 R e d u c e d s p e e d o f 0 0 0 0
eyelet
37 Soft-start 2 2 2 2
38 Number of stitches
of the sewing start of 1 1 1 1
thread tension
39 Number of stitches
of the sewing end of 1 1 1 1
thread tension

– 107 –
 16. SEWING DATA ENTRY SHEET
No. Setting item Description Setting range Unit
1 Knife No. Shape of knife *1 0 to 6 -
2 Cut length Length of cloth cutting knife *2 1mm
Operation of cloth cutting knife
3 Cut-before/cut-after knife 0 to 2 -
0 : Without knife 1 : Cut-before knife 2 : Cut-after knife
4 Number of stitches of parallel Number of stitches from parallel section to bottom of eyelet 3 to 100 stitch 1 stitch
5 Number of stitches of eyelet Number of stitches of top of eyelet 4 to 20 stitch 1 stitch
6 Cut space Clearance of knife groove of parallel section −1.2 to 1.2mm 0.1mm
7 Eyelet space Clearance of knife groove of eyelet −1.2 to 1.2mm 0.1mm
8 Compensation of knife position Longitudinal compensation of whole needle entry −0.7 to 0.7mm 0.1mm
Compensation of number of stitches
9 Number of stitches to increase length at sewing end −1 to 6 stitch 1 stitch
at sewing end
10 Compensation of turning Compensation of turning at parallel section and eyelet section −14 to 14 1
Compensation of turning at parallel
11 Compensation of turning of parallel section and bottom of eyelet −14 to 14 1
section
12 Lengthwise compensation of eyelet Crosswise compensation of eyelet −0.6 to 0.6mm 0.1mm
13 Crosswise compensation of eyelet Lengthwise compensation of top of eyelet −0.2 to 0.6mm 0.1mm
14 Crosswise compensation of left eyelet Lengthwise compensation of left side of top of eyelet −0.2 to 0.6mm 0.1mm
Compensation of length from left side of bottom of eyelet to left
15 Crosswise compensation of left parallel −0.6 to 0.6mm 0.1mm
side of parallel section
Compensation of the clearance in the left side knife slit at the
16 Left cut-space compensation −2.4 to 2.4mm 0.1mm
parallel section
Setting of stitch bite width of right
17 Setting of stitch bite width of right side of bottom of eyelet 2.5±1.0mm 0.1mm
bottom of eyelet
Setting of stitch bite width of left bottom
18 Setting of stitch bite width of left side of bottom of eyelet 2.5±1.0mm 0.1mm
of eyelet
19 Setting of stitch bite width Setting of stitch bite width of parallel section and taper bar 2.5±1.0mm 0.1mm
Type of bartack
20 Type of bartack 0 : Without bartack 1 : Taper bar 2 : Straight bar 0 to 4 -
3 : Round bar 4 : Round bar 2
21 Length of taper bar Length of taper bar 0.3 to 15mm 1mm
22 Number of stitches of taper bar Number of stitches of taper bar *3 2 to 30 stitch 1 stitch
23 Taper bar offset Overlapping amount of left/right taper bars 0.5 to 2.0mm 0.1mm
Number of stitches of slant section from taper bar to parallel
24 Number of stitches of slant taper bar 2 to 30 stitch 1 stitch
section
Compensation of number of stitches of
25 Number of stitches of compensation of right side of taper bar −30 to 0 stitch 1 stitch
right taper bar
26 Straight bar length Length of the straight bar 2.0 to 10.0mm 0.1mm
27 Number of stitches of straight bar Number of stitches of the straight bar *3 2 to 10 stitch 1 stitch
Amount of overlap between the straight bar and the parallel
28 Overlapping amount of straight bar 0.0 to 2.0mm 0.1mm
section
29 Needle throwing width of straight bar Needle throwing width of the straight bar 1.5 to 3.5mm 0.1mm
30 Number of stitches of round bar Number of stitches of round bar 4 to 20 stitch 1 stitch
Number of overlapping stitches of Number of stitches that overlap at the beginning and end of
31 0 to 4 stitch 1 stitch
round bar 2 the round bar 2
Needle throwing width for round Setting the needle throwing width at the right side of the round
32 2.5±1.0mm 0.1mm
bartack bar is set
Needle throwing width at the top of Setting the needle throwing width at the upper section of
33 2.5±1.0mm 0.1mm
eyelet eyelet is set
Speed reduction of straight bar/round Reduced speed for the sewing speed of the straight bar and
34 −600 to 0 sti/min 100 sti/min
bar round bar
35 Sewing speed Sewing speed 400 to 2500 sti/min 100 sti/min
36 Reduced speed of eyelet Reduced speed in terms of sewing speed of eyelet −600 to 0 sti/min 100 sti/min
37 Soft-start Number of times of needle entries of soft-start at sewing start 0 to 6 rotations 1 rotation
Number of stitches of the sewing start Number of stitches of thread tension compensation at sewing
38 0 to 3 stitch 1 stitch
of thread tension start
Number of stitches of the sewing end Number of stitches of thread tension compensation at sewing
39 0 to 3 stitch 1 stitch
of thread tension end
40 Needle thread tension Needle thread tension value 0 to 200 1

– 108 –
No. Setting item Description Setting range Unit
Compensation of needle thread ten- Compensation value of needle thread tension at right side of
41 *4 1
sion at right parallel section parallel section
Compensation of needle thread ten- Compensation value of needle thread tension at left side of
42 *4 1
sion at left parallel section parallel section
Compensation of needle thread ten-
43 Compensation value of thread tension at top of eyelet *4 1
sion at top of eyelet
Compensation of needle thread ten- Compensation value of needle thread tension at right side of
44 *4 1
sion at right bottom of eyelet bottom of eyelet
Compensation of needle thread ten- Compensation value of needle thread tension at left side of
45 *4 1
sion at left bottom of eyelet bottom of eyelet
Compensation of needle thread ten- Needle thread tension compensation value of the right side
46 *4 1
sion bartack, right of bartack
Compensation of needle thread ten- Needle thread tension compensation value of the left side of
47 *4 1
sion bartack, left bartack
Compensation of needle thread ten- Needle thread tension compensation value of the right side
48 *4 1
sion bartack, right 2 2 of bartack
Compensation of needle thread ten- Needle thread tension compensation value of the left side 2
49 *4 1
sion bartack, left 2 of bartack
Compensation of needle thread ten-
50 Compensation value of needle thread tension at sewing start *4 1
sion at sewing start
Compensation of needle thread ten-
51 Compensation value of needle thread tension at sewing end *4 1
sion at sewing end
Compensation of needle thread ten- Compensation value of needle thread tension at the time of
52 *4 1
sion at the time of thread trimming thread trimming of the sewing machine
Compensation of needle thread ten- Compensation value of needle thread tension at the time of
53 *4 1
sion at the time of stop stop of the sewing machine
(When the needle thread clamp unit is
selected as an option) Compensation value of the needle thread tension for drawing
54 Compensation of needle thread tension the needle thread after the needle thread clamp unit has *4 1
for drawing needle thread clamped by clamped the needle thread
the needle thread clamp unit
*1 : Knife No.
a
No. a×b
b 1 2.1×3.2
2 2.5×3.8
3 2.9×4.4
0 ... Decorative 1 to 6 ... Eyelet 4 3.0×4.6
buttonhole buttonhole 5 3.2×5.4
6 2.7×5.1

*2 : Setting range of cut length

Specifications Thread trimming type Eyelet buttonhole setting range Lockstitch buttonhole setting range

Needle thread trimmer type 10 to 38mm 5 to 38mm

J type
Overall thread trimmer type 10 to 34mm 5 to 34mm

Needle thread trimmer type 10 to 38mm 5 to 38mm

C type
Overall thread trimmer type 10 to 34mm 5 to 34mm

*3 : Setting range of the number of stitches of parallel section, of taper bar and of straight bar
The number of stitches using the stitch length in the range from 0.5 to 4.0 mm

*4 : Needle thread tension compensation value setting range

0 ≦ (Data No. 40 Needle thread tension) + (Data Nos. 41 to 51 Respective compensation values of needle thread) ≦ 200
0 ≦ (Memory switch No. 08 Needle thread tension when the sewing machine's needle thread trimmer trims the needle thread) +
(Data No. 52 Compensation value of needle thread tension at the time of thread trimming) ≦ 200
0 ≦ (Memory switch No. 10 Needle thread tension when the sewing machine stops) + (Data No. 53 Compensation value of needle
thread tension when the sewing machine stops) ≦ 200
(When the needle thread clamp unit is selected as an option)
0 ≦ (Memory switch No. 33 Needle thread tension when needle thread clamp unit trims the thread) + (Data No. 52 Compensation
value of needle thread tension at the time of thread trimming) ≦ 200
0 ≦ (Memory switch No. 34 Needle thread tension when the needle thread clamp unit draws the needle thread) + (Data No. 54
Compensation value of needle thread tension when the needle thread clamp unit draws the needle thread) ≦ 200

– 109 –