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This Manual is published by Stumper Industries for the benefit

of the users of Stumper Industries, Stump Grinders. Stumper
Industries has made every effort to ensure that this manual is
correct and up to date at the time of publication. However, due
to continuous improvements, Stumper Industries reserves the
right to make changes in the content, at any time, without notice
or obligation.

Each machine shipped contains an Operators Manual to

familiarize the operator with the proper operating and
maintenance instructions. This helps to ensure the best possible
performance and service from the machine. Please read and
understand all safety instructions before attempting to operate
the grinder. It is extremely important that the stump grinder is
checked prior to each operation and after any unexpected impact
to the grinder disk.

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Table of Contents

1. Safety………………………………4-5

2. Installation Instructions……………6

3. Grinding Stumps…………………...7-8

4. Cutter Wheel……………………….9

5. How to Sharpen Carbide Tips……..10

6. Stumper 220 Assembly……………11

7. 220 Parts List………………………12-13

8. Stumper 240 Assembly…………….14

9. 240 Parts List………………………15-16

10. Stumper 280 Assembly……………..17

11. 280 Parts List……………………….18-19

12. Warranty………………………….....20

13. Warranty Validation Form…………..21

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Safety

Safety Alert Symbols are used throughout this manual and on decals on
your stump grinder. When you see symbols become alert to safety
information and adhere to it to prevent injury or death.

DANGER – An immediate and specific hazard WILL result in severe

personal injury or death if the proper precautions are not taken.

WARNING – A specific hazard or unsafe practice which COULD result

in severe personal injury or death if proper precautions are not taken.

CAUTION – Reminder of good safety practices.

Be alert, know all safety information in this manual and adhere to safety
practices at all times.

Make sure anyone working with, maintaining or working around the

stump grinder is familiar with the operation and maintenance of the unit.

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 SAFETY

WARNING
PREPARE FOR EMERGENCIES

Keep a first aid kit readily available.

Keep emergency phone numbers
DO NOT operate the for doctors, Ambulance, hospital
Stumper 220/240/280 if any of and fire with you at all times.
the safety guards are not in
place.
READ THIS MANUAL AND FOLLOW SAFETY INSTRUCTIONS BEFORE CA
UT
ION
OPERATING THE STUMPER 220/280

Learn to operate the stump cutter and its controls properly.

Never let anyone operate without instruction. W
AR
NI
N G

Read the safety messages in this manual and on your stump cutter safety
signs. Keep safety signs clean and in good condition. Replace damaged
safety signs.

RECOGNIZE SAFETY INFORMATION AND SIGNAL WORDS

A safety symbol is used with the signal words DANGER, WARNING and
CAUTION. DANGER
DANGER denotes the most serious hazard.

WARNING is intermediate between DANGER and CAUTION.

WARNING
CAUTION denotes the least serious hazard.
CAUTION

DANGER: Moving grinding wheel will cause serious injury

or death. Stay away

WARNING: Flying objects thrown by machine may strike people.

Wear protective clothing: Safety glasses, close fitting clothing and any
other safety equipment appropriate for the job.

AVOID HIGH-PRESSURE FLUIDS

Escaping fluid under pressure can penetrate the skin and cause
serious injury.
Relieve pressure before disconnecting hydraulic lines.
Tighten all connections before applying pressure.
IF AN ACCIDENT OCCURS, SEE A DOCTOR IMMEDIATELY.
Any fluids injected into the skin must be surgically removed within
a few hours or gangrene may result.

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 STUMPER 220/240/280 INSTALLATION INSTRUCTIONS

1. Driving slowly, approach the

2. Secure latches on the skidsteer. Then lift Stumper
Stumper with the skidsteer. Lift
so it is in the vertical position.
Stumper a little off the ground.

3. Hook up hydraulic hoses. NOTE: Be sure to run hydraulic hoses through the inside of bracket as shown.

Arrow on fitting indicates flow through the hydraulic motor.

IN

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 HOW TO GRIND STUMPS
DANGER: Moving grinding wheel will cause serious injury or death. Stay away.
WARNING: Flying objects thrown by machine may strike people. Wear safety glasses and protective clothing.

Align the cutter wheel with the left side of the stump (viewed from the skidsteer control area) and position the machine
so that it will cut about 4-6 inches off the top of the stump and 8-12 inches from the left side of the stump. See Figure A.

The spring prevents overloading of the carbide tipped cutting wheel, ensuring that grinding never stops. The rate of cut
will depend on the type of tree, condition of the wood, and the condition of the cutters. Too light a feed will produce
sawdust. The ideal feeding rate produces heavy wood-chips, some of which may be about 1/16” thick by approximately
6 to 8 inches long as well as chunks of wood. See Figure B for typical wood-chips and debris. After completing the first
cut through the stump, move the skidsteer to the right (again as viewed from the control area) so the wheel can cut
another 8-12 inches. Proceed with another cut. Additional passes, when the tree stump is very large, are made in the
same manner as described above. Repeat the procedure until the stump is cut to ground level.

Before cutting below the ground level, make certain that all rock or stone are removed from the immediate area of the
cutting wheel. When you are cutting below the ground level, the feed rate should be reduced and the operator should be
alert to the possibility of cutting hidden rock. Extra care used in this part of the operation can avoid costly tooth damage.
See Figures A4 and A5 for positioning and Figure C for typical below ground cut.

The wheel is so designed that it can “saw” or cut its way into solid wood by dropping straight down on it. This operation
works well for cutting off large roots. See Figure D for a typical plunge cut to cut runner roots off.

1 2 3

FIRST
FIRSTC UCUT
T SECOND
SECO NCUT
DCUT LAST
LASTCUT
CU T
ABABOVE
OVEG RGROUND
OUND ABOVE
ABO GROUND
VEG ROUND ABOVE
ABO GROUND
VEG RO UND

4 5

Fig. A
FIRST
FIRSCUT
TCU T LAST
LASTCCUT
UT
BELOW
B ELOGROUND
W GRO UND BELOW
BELO WGGROUND
ROU ND

Fig. B

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 Fig. C

Fig. D

NOTE: DO NOT operate Stumper with safety guards removed.

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 CUTTER WHEEL

Examine wheel occasionally for

any possible weld cracks.
Reweld immediately.

Use Lock Washer Cutter: Carbide tip

and check nut faces rotation
tightness direction.
frequently.
NOTE: Nut must be
tightened after 1st
hour of use.

Rotation
Direction

There is 1 Cutter Tooth with a shim located

RAKERS on the perimeter of the Cutter Wheel.
NOTE: Teeth at 45 Degree angles
do not have shims.

Loosen to
remove shims.
Shim Lock
Cutter tooth Washer Nut

Remove shim when Cutter

Wheel perimeter is worn down.
NOTE: Check Teeth before
each use.
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WARNING: CONTAINS CEMENTED CARBIDE
Grinding produces hazardous dust. Wear approved
respirator in a well ventilated area when sharpening.
MAY FRACTURE DURING SHARPENING
Wear Safety Glasses and protective clothing.
STUMPER 220 ASSEMBLY

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 STUMPER 220 PARTS LIST

ITEM DESCRIPTION PART NO QTY

1 Quick Attach Weldment

a. Mini Skid Quick Attach 6079 1
b. Excavator Quick Attach Mount Weldment 3113 1

2 Shroud Weldment 6081 1

3 Hydraulic Motor 4084 1
4 Bolt, 1/2 NC x 2.5 lg Gr8 4056 4
5 1 - 1/4 NF Castle Jam Nut 4092 4
6 Nut, 1/2 NC Nylock Nut 4020
7 Parking Leg, Direct Drive 6040 1
8 Hydraulic Hose - .75 x 18 4047 2
9 Check Valve 4042 1
10 Tee 4052 2
11 Hydraulic Hose
a. 5/8 x 75" 4111 2
b. 5/8" x 108" 4046 2

12 Rubber Chip Deflector

a. Intake Rubber Chip Deflector 6062 1
b. Exit Rubber Chip Deflector 6063 1

13 1/4 x 1.44 lg Tek Screw 4031 6

14 1/2" Lock Washer 4019 1
15 1/2" NC x 1.25" lg Gr 8 Capscrew 4021 1
16 Shroud Pivot Pin 1069 1
17 1/8 x 2 - 1/2 Cotter Pin 4093 1
18 Spring 4059 1
19 5/8" NC Spade Bolt 4060 1
20 5/8" Flat Washer 4061 1
21 5/8" NC Nylock Nut 4062 1
22 Shaft Key, 7/16 Square x 1.25" long 4086 1
23 Cutter Wheel Weldment 6071 1
24 Cutter Tooth Mounting Plate 7002 5
25 Square Hole Washer 1258 11
26 5/8" NF x 2.50" lg Sock. Hd Capscrew 4100 10
27 Raker 3139 5
30 Cutter Tooth 4095 11
31 5/8" Lock Washer 4026 21
32 5/8" NF Nut Grade C 4025 21
33 Bolt, 1/2 NC x 1.75 lg Gr 8 4087 4
34 Washer, 1/2 Flatwasher 4088 4
35 Nut, 1/2 NC Nylock 4020 4
36 Stumper 220 Decal Kit

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STUMPER 240 ASSEMBLY

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 STUMPER 240 PARTS LIST

ITEM DESCRIPTION PART NO QTY

1 Quick Attach Weldment

a. Standard Quick Attach 3119 1
b. Mini Skid Quick Attach 6079 1
c. Excavator Quick Attach 3113 1

2 Shroud Weldment 7037 1

3 Hydraulic Motor
a. Standard Flow 4096 1
b. High Flow 4097 1

4 Bolt, 1/2" NC x 2.50" Long Gr. 8 4056 4

5 1.25" NF Castle Jam Nut 4092 1
6 1/2" NC Nylock Nut 4020 4
7 Parking Leg 6040 1
8 Hydraulic Hose - 3/4" x 18" 4047 2
9 Check Valve 4042 1
10 Tee 4052 2
11 Hydraulic Hose
a. 5/8" x 75" 4111 2
b. 5/8" x 108" - Standard Flow 4046 2
c. 3/4" x 108" - High Flow 4071 2

12 Rubber Chip Deflector

a. Intake Rubber Chip Deflector 6062 1
b. Exit Rubber Chip Deflector 6063 1

13 1/4" x 20 x 1 Screw 4122 6

13 1/4" Fender Washer 4123 6
13 Nylock Nut 4114 6
14 1/2" Lock Washer 4019 1
15 1/2" NC x 1.25" Long Gr. 8 Capscrew 4021 1
16 Shroud Pivot Pin 1069 1
17 1/8" x 2.50" Cotter Pin 4093 1
18 Spring 4059 1
19 5/8" NC Spade Bolt 4060 1
20 5/8" Flat Washer 4061 1
21 5/8" NC Nylock Nut 4062 1
22 Shaft Key, 7/16" Sq. x 1.25" Long 4086 1
23 Cutter Wheel Weldment 7010 1

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 STUMPER 240 PARTS LIST

ITEM DESCRIPTION PART NO QTY

24 Cutter Tooth Mounting Plate 7002 5

25 Square Hole Washer 1258 14
26 5/8" NF x 2.50" lg Sock. Hd Capscrew 4100 10
27 Raker 3139 5
29 Cutter Tooth Shim 1234 1
30 Cutter Tooth 4095 14
31 5/8" Lock Washer 4026 24
32 5/8" NF Nut Grade C 4025 24
33 Bolt, 1/2 NC x 1.75 lg Gr 8 4087 4
34 Washer, 1/2 NC Nylock 4088 4
35 Nut, 1/2 NC Nylock 4020 4
36 Stumper 240 Decal Kit 1

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STUMPER 280 ASSEMBLY

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Stumper Industries warrants each new Stump Grinder to be free of defects in workmanship and material for a period
of one year. This warranty takes effect upon delivery to the purchaser. Stumper Industries is not responsible for
consequential damages. Seller’s only warranty is that it will repair or replace, at its option, any defective part (s) for
a period of the product to the original purchaser that purchased the product from the Seller. Any claimed defective
part must be returned at the purchasers expense to the Seller at the Seller’s Houghton County, Michigan facility
within 1 year from the date of delivery. No warranty applies to any part (s) received by Seller later than 1 year from
the date of purchase. If found to be defective by Seller, Seller will repair or replace the defective part and return the
new or repaired part to the purchaser, freight prepaid. Seller’s only obligation is to repair or replace the defective
part as provided above. Any alleged part failure due to product abuse or misuse, product modification of any
type, or normal wear and deterioration of wear parts is not covered by this or any warranty. If the Seller and
purchaser disagree on whether or not the part was defective the dispute shall be resolved by arbitration pursuant to
the rules of the American Arbitration Association and that decision shall be final and binding on all parties. Seller
will not be responsible for any consequential damages arising from loss of use, loss of profits, labor costs for
removal, shipping or re-installation of any parts, injury suffered by any purchaser, user or third person or damages of
any nature even if due to a defect.

SELLER DISCLAIMS ALL OTHER WARRANTIES IN CONNECTION WITH THE

PRODUCT, EXPRESS OR IMPLIED, AS TO ANY MATTER WHATSOEVER, INCLUDING
WITHOUT LIMITATION DESCRIPTION, QUALITY, DESIGN, PERFORMANCE,
SPECIFICATIONS, CONDITION, MERCHANTABILITLY, AND FITNESS FOR ANY
PARTICULAR PURPOSE. THE ONLY WARRANTY BEING THAT PROVIDED ABOVE
TO THE ORIGINAL PURCHASER.

BUYER ACKNOWLEDGES THAT BUYER IS NOT RELYING ON SELLER’S SKILL OR

JUDGEMENT TO SELECT OR FURNISH GOODS SUITABLE FOR BUYER’S USE OR
PURPOSES AND BUYER AGREES THAT HE (IT) HAS INSPECTED THE PRODUCT,
OBSERVED ITS OPERATION OR DECLINED THAT OPPORTUNITY AND SELECTED
THE PRODUCT BASED SOLEY UPON THAT INSPECTION AND OBSERVATION
RATHER THAN OF ANY STATEMENT OR REPRESENTATION OF SELLER OR
SELLER’S AGENTS. “AS IS” AND “WITH ALL FAULTS,” AND BUYER
ACKNOWLEDGES THAT NO WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE ARE TO BE IMPLIED IN THIS TRANSACTION.

Buyer further acknowledges that the product might cause significant injury or damage to persons if used
other than in a careful and prudent manner as a stump grinder and that any observers or bystanders within
50 feet of the cutting head are subject to injury.

The owner is responsible for all regular maintenance as explained in the operators manual. Neglect in
regular maintenance or failure to replace normal wear items may void warranty.

IT IS NECESSARY TO RETURN THE WARRANTY VALIDATION FORM AND NOTIFY

STUMPER INDUSTRIES IN WRITING WITHIN TEN (10) DAYS FROM DELIVERY DATE
TO VALIDATE THIS WARRANTY.

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WARRANTY VALIDATION FORM

Congratulations on your purchase of a Stumper Industries Stump Grinder. This product

has been designed and manufactured to provide years of profitable service while
minimizing maintenance and downtime. Please take the time now to complete this
warranty validation form. This information is necessary for Stumper Industries to instate
your warranty.

Return Form To: Stumper Industries

51692 Industrial Drive
Calumet, MI 49913
Fax: 906.487.7006

Purchaser Information:

Company Name:____________________________

Street Address:______________________________

City:__________________________State:_________________ZipCode:___________

Telephone:___________________________

Contact:_________________________________________

Email:___________________________________________

Machine Information:

Model:________________________ Serial No:_________________________

Customer has been instructed on operation and safety aspects of operating the grinder.
1. Customer has been furnished with all parts and operators manuals.
2. All operation and warning decals are properly displayed on equipment.
3. Customer understands it is his responsibility to train all operators on operator
safety.

Date:__________________________________

Signed:________________________________
(Purchaser)

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