ORKA 350, 450

Spare parts list

Cutters

Valid from serial number

ORKA 350, 450 Lombardini FRO018252
ORKA 350, 450 Honda FRO018252
ORKA 350, 450 without petrol engine FRO018252

© 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29

ORKA 350, 450 Contents

Contents
General information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Spare parts list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Upper frame, Honda. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Upper frame, Lombardini . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Engine and power transmission, Honda. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Engine and power transmission, Lombardini. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Lower frame. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Discs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Service kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Adaptation kit, Lombardini. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

© 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29 3

ORKA 350, 450 Spare parts list

General information
This spare parts list applies to the following:

Part number Description

4812 0510 07 Cutter ORKA 350, 450 Honda petrol
4812 0510 08 Cutter ORKA 350, 450 Lombardini diesel
4812 0510 09 Cutter ORKA 350, 450 Without petrol engine

Use only authorized parts. Any damage or malfunction caused by the use of
unauthorized parts is not covered by Warranty or Product Liability.
Any unauthorized use or copying of the contents or any part thereof is
prohibited. This applies in particular to trademarks, model denominations, part
numbers, and drawings.

Instructions for use

This spare parts list contains no safety regulations and is merely intended to
assist in the ordering of spare parts.
For information about operating, servicing, or repairing, the relevant Safety
and operating instructions must be consulted at all costs.
Please observe the safety instructions listed in the relevant Safety and operating
instructions!

© 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29 5

Spare parts list ORKA 350, 450

Spare parts list

Upper frame, Honda

47
15
23

10
41 44
40 17
36
46
34 48
19
26 44
18
8 51
3 54
4
1 6
5
7 53

38 12
39 13
27 24
30
27 2
50
11 37

42

52

49
55
25
56 45

32
22 22
9 14
43 21
20 33
29
31
28
35

16
21

6 © 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29

ORKA 350, 450 Spare parts list

No. Description Remark Quantity Part number

1 Terminal 2 4700 1856 45
2 Clamp Lg186 x 4.7 mm 5 4700 3130 41
3 Electric cable 1.35 m 1 4700 3641 19
4.43 ft
4 Switch 1 4700 3647 63
5 Membrane 1 4700 3647 65
6 Washer 1 4700 3647 66
7 ON/OFF Plate 1 4700 3655 38
8 Label "Power" 1 4700 3683 12
9 Adjusting bar 1 4812 0510 14
10 Handle 1 4700 3688 58
11 Screw 1 4700 3688 60
12 Bearing 1 4700 3688 61
13 Bearing End stop 1 4700 1379 24
14 Angle bar 1 4812 0510 17
15 Handle 1 4700 3688 66
16 Guide 1 4812 0510 18
17 Throttle cable 1 4700 3688 71
18 Lever 1 4700 3688 76
19 Screw M6 x 16 mm CL10.9 DIN933 2 4700 5000 13
20 Screw M8 x 50 mm DIN933 1 -
21 Screw M10 x 30 mm DIN933 3 -
22 Screw M10 x 20 mm DIN933 5 -
23 Screw M5 x 20 mm DIN963A 2 -
24 Screw 4.2 x 16 mm 5 -
0.17 x 0.63 in. DIN7981C
25 Nut M10 DIN934 3 -
26 Nut M5 DIN985 2 -
27 Nut M6 DIN985 10 -
28 Nut M8 DIN985 1 -
29 Nut M10 DIN985 4 -
30 Washer 6.4 x 12 x 1.6 mm 4 -
0.25 x 0.47 x 0.06 in. ISO7089
31 Washer 8.4 x 16 x 1.6 mm 1 -
0.33 x 0.63 x 0.06 in. ISO7089
32 Washer 10.5 x 22 x 2.0 mm 6 -
0.41 x 0.87 x 0.08 in. NFE25-513
33 Washer 10.5 x 20 x 2.0 mm 2 -
0.41 x 0.79 x 0.08 in. ISO7089
34 Washer M5 DIN6796 2 -
35 Washer M10 DIN6796 4 -
36 Pin Ø5 x 50 mm 1 -
Ø0.20 x 1.97 in. ISO8752
37 Cable tie holder 5 4700 9216 93
38 Terminal 1 4700 9600 66
39 Terminal 1 4700 9600 69
40 Throttle lever 1 4700 3684 34
41 Nipple 1 4700 3684 33
42 Frame 1 4812 0510 11
43 Cover holder 1 4812 0510 20
44 Handle 2 4812 0512 91
45 Screw M10 x 60 mm DIN933 1 -
46 Washer 17 x 32 x 3 mm 2 -
0.67 x 1.26 x 0.12 in. NFE25-513
47 Label "Cutting depth" 1 4700 3689 28

© 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29 7

Spare parts list ORKA 350, 450

No. Description Remark Quantity Part number

48 Label "Noise level" 1 4700 3692 28
49 Product label "Atlas Copco" 2 4812 0510 25
50 Plastron Right 1 4812 0510 22
51 Plastron Left 1 4812 0510 23
52 Screw M6 x 12 mm DIN6921 10 -
53 Label 1 4700 3689 29
54 Round 1 4812 0512 87
55 Rivet 1 4700 1859 96
56 Data plate 1 -

8 © 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29

ORKA 350, 450 Spare parts list

© 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29 9

Spare parts list ORKA 350, 450

Upper frame, Lombardini

39
9

17
4
33 36
30
32 11
38
28
50 13 40
12
20 36

2 43

32 46

11 45

49 33 6
7
21 18
24
21 1
42
5 31

34
44

41
47
19
48 37

26
3
16 16 8
35 15
14 27
23
25
22
29

10
15

10 © 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29

ORKA 350, 450 Spare parts list

No. Description Remark Quantity Part number

1 Clamp Lg186 x 4.7 mm 5 4700 3130 41
2 Label "Power" 1 4700 3683 12
3 Adjusting bar 1 4812 0510 14
4 Handle 1 4700 3688 58
5 Screw 1 4700 3688 60
6 Bearing 1 4700 3688 61
7 Bearing End stop 1 4700 1379 24
8 Angle bar 1 4812 0510 17
9 Handle 1 4700 3688 66
10 Guide 1 4812 0510 18
11 Throttle cable 2 4700 3681 03
12 Lever 1 4700 3688 76
13 Screw M6 x 16 mm CL10.9 DIN933 2 4700 5000 13
14 Screw M8 x 50 mm DIN933 1 -
15 Screw M10 x 30 mm DIN933 3 -
16 Screw M10 x 20 mm DIN933 5 -
17 Screw M5 x 20 mm DIN963A 2 -
18 Screw 4.2 x 16 mm 5 -
0.17 x 0.63 in. DIN7981C
19 Nut M10 DIN934 3 -
20 Nut M5 DIN985 2 -
21 Nut M6 DIN985 10 -
22 Nut M8 DIN985 1 -
23 Nut M10 DIN985 4 -
24 Washer 6,4 x 12 x 1.6 mm 4 -
0.25 x 0.47 x 0.06 in. ISO7089
25 Washer 8,4 x 16 x 1.6 mm 1 -
0.33 x 0.63 x 0.06 in. ISO7089
26 Washer 10.5 x 22 x 2.0 mm 6 -
0.41 x 0.87 x 0.08 in. NFE25-513
27 Washer 10.5 x 20 x 2.0 mm 2 -
0.41 x 0.79 x 0.08 in. ISO7089
28 Washer M5 DIN6796 4 -
29 Washer M10 DIN6796 2 -
30 Pin Ø5 x 50 mm 1 -
Ø0.20 x 1.97 in. ISO8752
31 Cable tie holder 5 4700 9216 93
32 Throttle lever 2 4700 3684 34
33 Nipple 2 4700 3684 33
34 Frame 1 4812 0510 27
35 Cover holder 1 4812 0510 20
36 Handle 2 4812 0512 91
37 Screw M10 x 80 mm DIN933 1 0147 1958 77
38 Washer 17 x 32 x 3 mm 2 -
0.67 x 1.26 x 0.12 in. NFE25-513
39 Label "Cutting depth" 1 4700 3689 28
40 Label "Nosie level" 1 4812 0507 55
41 Product label "Atlas Copco" 2 4812 0510 25
42 Plastron Right 1 4812 0510 22
43 Plastron Left 1 4812 0510 23
44 Screw M10 x 60 mm DIN933 10 -
45 Label 1 4700 3689 29
46 Round 1 4812 0512 87
47 Rivet 1 4700 1859 96
48 Data plate 1 -

© 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29 11

Spare parts list ORKA 350, 450

No. Description Remark Quantity Part number

49 Screw M5 x 40 mm DIN963A 2 4700 3686 95
50 Label "On - Off" 1 4812 0503 25

12 © 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29

ORKA 350, 450 Spare parts list

© 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29 13

Spare parts list ORKA 350, 450

Engine and power transmission, Honda

15

2 13

16

23
22

3
14

5
20 1
11
18

6
16

20 18
17
5
14 19

21
8
9

12 10

14 © 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29

ORKA 350, 450 Spare parts list

No. Description Remark Quantity Part number

1 Key 8 x 7 x 45 mm 1 4700 3500 35
0.31 x 0.28 x 1.77 in. DIN6885A
2 Pulley Motor shaft 1 4700 3688 18
3 Pulley Blade shaft 1 4700 3688 19
4 Engine Honda GX390 UT1 QWA4 SD 1 4700 3688 45
5 Bearing 2 4700 3688 46
6 Blade shaft 1 4700 3688 47
7 Blade holder 1 4700 3688 48
8 Pin Ø10 x 30 mm 1 4700 3688 49
0.39 x 1.18 in. ISO8752
9 Flange 1 4700 3688 50
10 Tensioning plate 1 4812 0510 13
11 Belt Poly V12 PK611 1 4700 3688 62
12 Screw 1 4700 3688 65
13 Pulley cover 1 4812 0510 19
14 Screw M12 x 35 mm DIN933 4 -
15 Screw M10 x 20 mm DIN6921 1 -
16 Screw M6 x 8 mm DIN916 4 -
17 Nut M10 DIN985 4 -
18 Nut M12 DIN985 4 -
19 Washer M10 DIN6796 4 -
20 Washer M12 DIN6796 4 -
21 Pin Ø6 x 30 mm 1 4700 6290 24
Ø0.24 x 1.18 in. ISO8752
22 Oil alert unit 1 4812 0505 35
23 Stop switch 1 4700 1172 52

© 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29 15

Spare parts list ORKA 350, 450

Engine and power transmission, Lombardini

15

2 13

16

3
14

5
1
20
11
18
6
16

20 18
17
5
14 19

21
8
9

12 10

16 © 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29

ORKA 350, 450 Spare parts list

No. Description Remark Quantity Part number

1 Key 8 x 7 x 45 mm 1 4700 3500 35
0.32 x 0.28 x 1.77 in. DIN6885A
2 Pulley Motor shaft 1 4700 3688 18
3 Pulley Blade shaft 1 4700 3688 19
4 Engine Lombardini 15LD350 1 4700 3696 74
5 Bearing 2 4700 3688 46
6 Blade shaft 1 4700 3688 47
7 Blade holder 1 4700 3688 48
8 Pin Ø10 x 30 mm 1 4700 3688 49
0.39 x 1.18 in. ISO8752
9 Flange 1 4700 3688 50
10 Tensioning plate 1 4812 0510 28
11 Belt Poly V12 PK673 1 4700 3696 77
12 Screw 1 4700 3688 65
13 Pulley cover 1 4812 0510 29
14 Screw M12 x 35 mm DIN933 4 -
15 Screw M10 x 20 mm DIN6921 1 -
16 Screw M6 x 8 mm DIN916 4 -
17 Nut M10 DIN985 4 -
18 Nut M12 DIN985 4 -
19 Washer M10 DIN6796 4 -
20 Washer M12 DIN6796 4 -
21 Pin Ø6 x 30 mm 1 -
Ø0.24 x 1.18 in. ISO8752

© 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29 17

Spare parts list ORKA 350, 450

Lower frame

10 9

36

22

20
21
26
12 17
4 24
13 18
29 14
3 16
15 19

6 2

33
25 32 27
23
31

8
31

35 11
5
28
11 30 7 1
6 34

34

31
2
7
34

31
34
1

18 © 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29

ORKA 350, 450 Spare parts list

No. Description Remark Quantity Part number

1 Retaining ring 2 4700 1833 38
3 Nut M4 DIN985 2 4700 1835 57
4 Clamp 1 4700 8140 71
5 Label "ORKA" 1 4812 0510 26
6 Wheel 2 4700 3688 34
7 Wheel 2 4700 3688 35
8 Frame 1 4812 0510 12
9 Water tank 30 litre 1 4700 3688 51
7.90 gallon
10 Tank plug 1 4700 3688 52
11 Flat bar 2 4812 0510 16
12 Flat bar 1 4700 3688 67
13 Rubber guard 1 4700 3688 68
14 Blade guard 1 4812 0510 15
15 Coupling 1 4700 3689 15
16 Water cock 1 4700 3689 16
17 Water coupling 1 4700 3689 17
18 Nipple 1 4700 3689 18
19 Fork 1 4700 3689 26
20 Nut 3/8 in. 1 -
21 Nipple 1 4700 1172 81
22 Hose 1 4700 3689 35
23 Screw M10 x 100 mm DIN931 1 -
24 Screw M6 x 20 mm CL10.9 DIN933 1 -
25 Screw M10 x 20 mm DIN6921 1 -
26 Screw M4 x 16 mm DIN84A 2 -
27 Nut M6 DIN985 1 -
28 Nut M10 DIN985 1 -
29 Washer M4 2 -
30 Washer 10.5 x 22 x 2.0 mm 1 -
0.41 x 0.87 x 0.08 in. NFE25-513
31 Washer 21 x 37 x 3.0 mm 4 -
0.83 x 1.46 x 0.12 in. ISO7089
32 Washer 6.5 x 10.4 x 2.0 mm 1 -
0.26 x 0.41 x 0.08 in. NFE25-515
33 Washer M10 DIN6796 1 -
34 Washer 15 x 28 x 2.5 mm 4 -
0.59 x 1.10 x 0.10 in. ISO7089
35 Label "Arrow" 1 4812 0503 26
36 Label "Water only" 1 4700 3694 24

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Spare parts list ORKA 350, 450

Accessories
Discs

Description Remark Quantity Part number

350F Suitable for fresh concrete (24-72 hours). 5 4700 3685 94
Cutting depth: up to 120 mm
(4.72 in.)
350C Suitable for old concrete (full strength). 5 4700 3685 93
Cutting depth: up to 120 mm
(4.72 in.)
350A Suitable for asphalt. 5 4700 3685 92
Cutting depth: up to 120 mm
(4.72 in.)
450F Suitable for fresh concrete (24-72 hours). 1 4700 3685 95
Cutting depth: up to 170 mm
(6.69 in.)
450C Suitable for old concrete (full strength). 1 4700 3685 87
Cutting depth: up to 170 mm
(6.69 in.)
450A Suitable for asphalt. 1 4700 3685 88
Cutting depth: up to 170 mm
(6.69 in.)

20 © 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29

ORKA 350, 450 Spare parts list

Kits
Service kits
One year service kit, Honda
Part number 3382 1000 86

Description Remark Quantity Part number

Air filter 1 4700 3667 78
Fuel filter 1 4700 3671 24
Spark plug 1 4700 3612 42
Air filter cover 1 4700 1171 24
Starter rope 1 3382 1001 02
Gasket 1 3382 1001 01

One year service kit, Lombardini

Part number 3382 1000 87

Description Remark Quantity Part number

Air filter 1 4700 3699 76
Oil filter 1 4700 3699 82
Fuel filter 1 4700 3699 90

Adaptation kit, Lombardini

Description Remark Quantity Part number

Adaptation kit 1 4812 0502 29
Holder 1 4812 0502 30
Stop 1 4812 0502 31
Clamp 5 4700 1865 80
Label 1 4700 3683 12
Throttle cable 1 4700 1172 82
Screw 2 4700 5350 08
Cable tie holder 5 4700 9216 93
Throttle lever 1 D604 0017 39
Nipple 1 D604 0027 30
Nut 2 4700 5860 01
Washer 2 4700 6150 41
Cable stop 1 4812 0502 32
Screw 5 4700 5415 39

© 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29 21

 © 2011 Atlas Copco Construction Tools AB | No. 9800 1204 01 | 2011-12-29

Any unauthorized use or copying of the contents or any part thereof is prohibited.
This applies in particular to trademarks, model denominations, part numbers, and
drawings.

www.atlascopco.com