TMG GSG9 User manual

Walk Behind Stump Grinder
MODEL: TMG-GSG9
WWW.TMGINDUSTRIAL.COM Toll Free:1-877-761-2819
PRODUCT MANUAL
V2021.09.28
14HPKOHLER®Powered
Please read the product manual completely before assembly
Check against the parts list to make sure all parts are received
Wear proper safety goggles or other protective gears while in assembly
Missing parts or questions on assembly?
Please call: 1-877-761-2819 or email: [e-mail]
Do not return the product to dealer, they are not equipped to handle your
requests

Table of Contents
PART I: General Safety Rules...............................................................................................................03
PART II: Familiar with the Stump Grinder................................................................................................08
PART III: Install the Stump Grinder...................................................................................09
PART IV: Operating the Stump Grinder.............................................................................................13
PART V: Maintaining the Stump Grinder...............................................................................................17
PART VI: Troubleshooting and Parts List...............................................................................................18
Conventions used in this manual
WARNING
This indicates a hazardous situation, which, if not avoided, could result in death or serious injury.
CAUTION
This indicates a hazardous situation, which, if not avoided, could result in minor or moderate injury.
NOTICE
This information is important in proper using of your machine. Failure to follow this instruction could
result in damage to your machine or property.
Additional Information and Potential Changes
We reserve the right to discontinue, change, and improve its products at any time without notice or
obligation to the purchaser. The descriptions and specifications contained in this manual were in effect
at printing. Equipment described within this manual may be optional. Some illustrations may not be
applicable to your machine
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PART I: General Safety Rules
Safety Labels Found on Your Unit
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WARNING
Read this Safety & Operating Instructions manual before you use the Stump Grinder. Become familiar
with the operation and service recommendations to ensure the best performance of your machine.
Propose
CAUTION
This machine is designed solely to grind stumps and must not be used for any other purpose.
It should only be used by trained operators who are familiar with the content of this manual. It is
potentially hazardous to fit or use any parts other than your dealer parts. The company disclaims all
liability for the consequences of such use, which in addition voids the machine warranty.
Before using the stump grinder
NOTICE
A．Operators must be fully trained before using this machine.
B．User Manual is read and understood.
C．Machine is positioned on level ground, all guards are fitted and in good condition.
D．Teeth are in good condition and secure.
E．All fasteners are checked for tightness.
F．Only stumps are removed with this machine.
G．Emergency stop wire is correctly connected and the switch is functional.
H．Fire extinguisher is available on site.
When using the stump grinder
NOTICE
A. Always stay clear of the rotating cutter wheel.
B. It is better to have a second trained operator within easy reach of the machine.
C. Always maintain strict discipline and service machine at specified periods.
D. DO NOT grind stumps with tow bar installed.
E. DO NOT put any part of your body near the cutter while the machine is running.
F. DO NOT operate the machine while under the influence of alcohol or drugs.
G. DO NOT operate inside a building or confined space.
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Protecting Yourself and Those Around You
WARNING
This is a powerful machine, with moving parts operating with high energy. You must operate the
machine safely. Unsafe operation can create a number of hazards for you, as well as anyone else in the
nearby area. Always take the following precautions when using this machine:
A. Keep in mind that the operator or user is responsible for accidents or hazards occurring to other
people, their property, and themselves.
B. Always wear protective goggles or safety glasses with side shields while using the Stump Grinder
to protect your eyes from possible thrown debris.
C. Avoid wearing loose clothing or jewelry, which can catch on moving parts.
D. We recommend wearing gloves while using the Stump Grinder. Be sure your gloves fit properly
and do not have loose cuffs or drawstrings.
E. Wear shoes with non-slip treads when using your Stump Grinder. If you have safety shoes, we
recommend wearing them. Do not use the machine while barefoot or wearing open sandals.
F. Wear long pants while operating the Stump Grinder.
G. Keep bystanders at least 50 feet away from your work area at all times. Stop the engine when
another person or pet approaches.
Safety for Children and Pets
WARNING
Tragic accidents can occur if the operator is not alert to the presence of children and pets. Children are
often attracted to the machine and the chipping activity. Never assume that children will remain where
you last saw them. Always follow these precautions:
A. Keep children and pets at least 50 feet from the working area and ensure they are under the
watchful care of a responsible adult.
B. Be alert and turn the machine off if children or pets enter the work area.
C. Never allow children to operate the stump grinder.
Safety with Gasoline - Powered Machines
WARNING
Gasoline is a highly flammable liquid. Gasoline also gives off flammable vapor that can be easily ignited
and cause a fire or explosion. Never overlook the hazards of gasoline. Always follow these precautions:
A. Never run the engine in an enclosed area or without proper ventilation as the exhaust from the
engine contains carbon monoxide, which is an odorless, tasteless, and a deadly poisonous gas.
B. Store all fuel and oil in containers specifically designed and approved for this purpose and keep
away from heat and open flame, and out of the reach of children.
C. Replace rubber fuel lines and grommets when worn or damaged and after 5 years of use.
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D. Fill the gasoline tank outdoors with the engine off and allow the engine to cool completely. Don't
handle gasoline if you or anyone nearby is smoking, or if you're near anything that could cause it to
ignite or explode. Reinstall the fuel tank cap and fuel container cap securely.
E. If you spill gasoline, do not attempt to start the engine. Move the machine away from the area of
the spill and avoid creating any source of ignition until the gas vapors have dissipated. Wipe up any
spilled fuel to prevent a fire hazard and properly dispose of the waste.
F. Allow the engine to cool completely before storing in any enclosure. Never store a machine that
has gas in the tank, or a fuel container, near an open flame or spark such as a water heater, space
heater, clothes dryer or furnace.
G. Never make adjustments or repairs with the engine running. Shut down the engine, disconnect the
spark plug wire, keeping it away from the spark plug to prevent accidental starting, wait 5 minutes
before making adjustments or repairs.
H. Never tamper with the engine’s governor setting. The governor controls the maximum safe
operation speed and protects the engine. Over-speeding the engine is dangerous and will cause
damage to the engine and to the other moving parts of the machine. If required, see your
authorized dealer for engine governor adjustments.
I. Keep combustible substances away from the engine when it is hot.
J. Never cover the machine while the muffler is still hot.
K. Do not operate the engine with the air cleaner or the carburetor air intake cover removed. Removal
of such parts could create a fire hazard. Do not use flammable solutions to clean the air filter.
L. The muffler and engine become very hot and can cause a severe burn; do not touch.
General Safety
WARNING
Operating this Stump Grinder safely is necessary to prevent or minimize the risk of death or serious
injury. Unsafe operation can create a number of hazards for you. Always take the following precautions
when operating:
A. Your machine is a powerful tool, not a plaything. Exercise extreme caution at all times. The
machine is designed to grind stumps. Do not use it for any other purpose.
B. Know how to stop the Stump Grinder quickly.
C. Never operate your unit on a slippery, wet, muddy, or icy surface. Exercise caution to avoid
slipping or falling.
D. See manufacturer’s instructions for proper operation and installation of accessories.
E. Never use the machine without ensuring that all guards and shields are in place.
F. Never, under any conditions, remove, bend, cut, fit, weld, or otherwise alter standard parts on the
Stump Grinder. This includes all shields and guards. Modifications to your machine could cause
personal injuries and property damage and will invalid your warranty.
G. If the machine start to make an unusual noise or vibrate, shut down the engine, disconnect the
spark plug wire, keeping it away from the spark plug to prevent accidental starting, wait 5 minutes
for engine to cool down, then inspect for damage. Vibration is generally a warning of trouble.
Check damaged parts and clean, repair and/or replace as necessary.
H. Never tamper with safety devices. Check their proper operation regularly.
I. Before performing any maintenance or inspection procedure, shut down the engine, disconnect
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the spark plug wire keeping it away from the spark plug to prevent accidental starting, wait 5
minutes for machine to cool down.
J. Never allow people who are unfamiliar with these instructions to use the machine. Allow only
responsible individuals who are familiar with these rules of safe operation to use your machine.
K. Never overload or attempt to chip woods beyond the manufacturer’s recommendation. It could
result in personal injury or damage to the machine.
L. While using, don't hurry or take things for granted. When in doubt about the equipment or your
surroundings stop the machine and take time to look things over.
M. Never operate the machine when under the influence of alcohol, drugs, or medication.
N. Use the machine only in daylight.
O. Stay alert for hidden hazards or traffic.
P. Keep all nuts and bolts tight and keep the equipment in good operating condition.
Q. Tow the equipment safely at 25MPH off road only. NEVER tow on paved streets as this will
damage your ATV tires.
R. ALLWAYS take the brake off before towing.
A Note to All Users
List of warnings and cautions cannot be all-inclusive. If situations occur that are not covered by this
manual, the operator must apply common sense and operate this Stump Grinder in a safe manner.
Contact the dealers for assistance in your area.
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PART II: Familiar with the Stump Grinder
It may be helpful to familiarize yourself with the controls and features of the Stump Grinder. If you have
any question, please contact the dealers in your area.
TECHNICAL SPECIFICATIONS
Start
Recoil Start
Engine
14HP four strokes
Power
Gasoline
Wheel Diameter
14 inch
Cutters
12
Stump Height
12 inch
Stump Diameter
Any
Tire
14.5*7.0-6
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PART III: Install the Stump Grinder
1. After unpacking, check the following components
No
Description
Quantity
No
Description
Quantity
2
Bottom handrail
1
59
Ratchet fixing bolt
1
13
Tire
2
95
Cushioning
1
28
Drum brake cover
1
96
Machine body assembly
1
29
Behind splasher
1
97
Upper handrail assembly
1
44
Handle bar lock lever
1
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96
2
97
44
59
13
29
28
95

2. Installation the tire
Parts no.
Description
Specifications
Quantity
13
Tire
2
26
Flange
1
27
Brake flange
1
28
Drum brake cover
1
68
Spring washer
M14
2
69
Nuts
M14
2
70
Washer
M14
2
96
Machine body assembly
1
3. Installation bottom handrail
Parts no.
Description
Specifications
Quantity
2
Bottom handrail
1
61
Bottom handrail
M12x35
4
62
Washer
M12
8
63
Spring washer
M12
4
64
Nut
M12
4
95
Cushioning
1
96
Machine body assembly
1
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27
26

4. Installation Upper handrail assembly
Parts no.
Description
Specifications
Quantity
21
Brake line
1
44
Handle bar lock lever
1
59
Ratchet fixing bolt
M16*360
1
96
Machine body assembly
1
97
Upper handrail assembly
1
98
Throttle cable assembly
1
5. Installation brake cable
1. Install brake cable. Remove front jam nut and insert cable stop into brake lever.
2. Once inserted, pull cable back and insert into cable mount. Thread outer nut back on leaving about
15mm of thread showing. Using 13mm wrench tighten both jam nuts.
3. Fine tuning can be done with the knob on the end of the brake handle. Turing the knob clockwise
will increase tension. Counter-clockwise will release tension.
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6. Installation behind splasher
Parts no.
Description
Specifications
Quantity
29
Behind splasher
1
67
Nut
M8
8
72
Washer
M8
8
73
Spring washer
M8
8
74
Bolts
M8*25
8
96
Machine body assembly
1
7. Lubricating grease
WARNING
Lubricate the bearing before
each use, Otherwise, the service
life of the machine will be affected
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Oil filter

PART IV: Operating the Stump Grinder
It may be helpful to better familiarize yourself with the features of your Stump Grinder before beginning
the steps outlined in this chapter.
WARNING
A. Read and understand all instructions, safety precautions, and/or warnings listed in “PART I:
General Safety Rules” before operating the Stump Grinder. If any doubt or question arises about
the correct or safe method of performing anything found in this manual, please contact the dealers
in your area.
B. When operating the Stump Grinder, make sure you are standing in the safe operating area
(OPERATOR ZONE). You must stay in the safe operating area at all times when the ram is in motion
(whether extending or retracting). Never place any part of your body into a position that causes an
unsafe operating condition.
C. Before loading and operating the Stump Grinder, always wear protective gear, including safety
goggles, hearing protection, tight-fitting gloves without draw strings or loose cuffs, and steel-toed
shoes.
D. Never use an incorrect or unsafe method of operation.
Starting
1. Position your Stump Grinder on flat, dry ground.
2. Put the brake on making sure the brake pin and wheel is engaged and locked.
3. Make sure the fuel shut-off valve is in the “ON” position.
4. Move the choke control lever to the “CHOKE” position (should only be needed if the engine is
cold).
5. Move the throttle control lever to the “MID” position.
6. Adjust your bow handle to the desired position.
7. Depress safety shut off bail on the bow handle.
8. Raise the cutter teeth off the ground and start the engine. This is a direct drive unit and the cutter
wheel will rotate during starting.
9. Recoil Start: Turn the Ignition Switch to the “On” position. Grasp the recoil starter handle and
slowly pull until you feel resistance. Let the cord retract a little bit then pull the cord rapidly to start
the engine. One or two pulls usually starts the engine.
10. Electric Start: Turn and hold the Key in the start position until Engine starts then let the Key return
to run position.
11. Move the choke control lever (if used for cold engine) slowly back to the “RUN” position when the
engine is running well.
12. Increase engine speed to FULL RABBIT RPM.
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Stopping
1. Let of the bail shut off on the bow handle
OR
2. Recoil Start: Slide the GAS leverl to the LEFT to shut engine off.
3. Electric Start: Turn the Key to the OFF position.
Operator Zone
Stump Grinder
NOTICE
Clear area around stump to remove all rocks and stones.
WARNING
Do not place your feet and hands into the cutting wheel area. This is a very UNSAFE and could result in
injury or death.
Never allow yourself or others to reach or step to the side or the front of the Stump Grinder when it is
running. This is a very UNSAFE method witch could cause personal injury, ever death.
Vibration
If the unit starts to vibrate abnormally shut the unit down. Inspect for missing or broken teeth and
replace if required. Check your teeth bolts that are tight. Check your drive belts.
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Removing Stumps
Remove all loose pieces of wood, stones, wire and other debris from the area before beginning
stump removal.
Wind direction should be considered, as it influences the direction in which dust and wood chips
are directed.
Never operate the stump grinder after dark. There will not be adequate light to operate the stump
grinder safely.
Always allow a cold engine to warm up
before cutting a stump.
Only the portion of cutting wheel within
the 80 degree area shown below should
engage the stump. Never undercut the
stump or use the bottom of the cutting
wheel for cutting purposes.
Prepare the Grinder at the Stump
Place the stump grinder into
position with the cutting wheel
near the top edge of the stump.
Removing Roots
1. Make sure the throttle is set
to FAST. The cutter wheel will
accelerate to cutting speed.
2. Swing the cutting wheel to
one side, then lower it into the
nearest roots that are buried at
the foot of the stump.
3. Swing the cutting wheel before
each sweep, until the roots are
sufficiently removed
4. Raise the cutting wheel until the center of the cutting wheel is just above the top of the stump.
5. Allow the cutting wheel to stop, release the brake and resposition the machine.
6. Lock the brake again.
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Cutting the Full Stump
1. Make sure the throttle is set to FAST. The cutter wheel will accelerate to cutting speed.
2. Direct the cutting wheel against the stump, beginning with the nearest top corner of the stump.
Steadily sweep it across the stump left and right, cutting away 1/2 inch of wood with each sweep.
3. Raise and lower the cutting wheel between sweeps by lowering and raising the control handle.
4. Roll the machine forward and back by pushing and pulling on the control handle. Re-lock it when the
machine has been repositioned and continue cutting.
Continue with Final Root Removal
Cut the remaining roots until all roots
are removed.
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PART V: Maintaining the Stump Grinder
Regular maintenance is the way to ensure the best performance and long life of your machine. Please
refer to this manual and the engine manufacturer's user manual for maintenance procedures.
WARNING
Before performing any maintenance procedure or inspection, stop the engine, wait five minutes to allow
all parts to cool. Disconnect the spark plug wire, keeping it away from the spark plug. Disconnect the
Battery Terminals (Electric start only).
Regular Maintenance Checklist
Procedure
Before Each Use
Every 3
Hours
Every 25
Hours
Every 100
Hours
Check engine oil level
Δ
Check general equipment condition
Δ
Check teeth and bolts
Δ
Check belts
Δ
Check tire pressure
Δ
Clean engine exterior and cooling
Δ
Change Engine Oil
First time 5hours
Δ
Replace air filter
Δ
Replace spark plug
Δ
Engine Service
Refer to the engine manufacturer’s user manual for engine maintenance.
Lubrication
NOTICE
All Bearings of your Stump Grinder are sealed units and should have enough lubricant to last the life of
your machine with normal use. Grease Zerks are installed if grease is ever needed. Use standard
bearing grease.
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PART VI: Troubleshooting and Parts List
Most problems are easy to fix. Consult the Troubleshooting Table below for common problems and
their solutions. If you continue to experience problems, contact the dealers in your area.
WARNING
Before performing any maintenance procedure or inspection, stop the engine, wait five minutes to allow
all parts to cool. Disconnect the spark plug wire, keeping it away from the spark plug.
Troubleshooting Table
SYMPTOM
POSSIBLE CAUSE
The engine won’t start.
(Please refer to the
engine user manual
for engine-specific
procedures.)
 Is the SAFETY BAR HELD DOWN to engage the safety cutoff switch?
 Is the fuel shut-off valve on? SLIDE THE LEVER ALL THE WAY TO THE
RIGHT
 Are you using fresh, clean gas? If the gas is old, change it. Use a fuel
stabilizer if you keep gas longer than 30 days.
 Is the spark plug clean? If the spark plug is dirty or cracked, change
it. If it’s oily, leave it out, hold a rag over the plug hole and pull the
recoil cord several times to blow out any oil in the cylinder, then wipe
off the plug and reinsert it.
The engine lacks power
or is not running
smoothly.
(Please refer to the
engine user manual
for engine-specific
procedures.)
 Check that the Throttle Lever is in the “RABBIT” position. TURN OFF
THE CHOKE
 Is the air filter clean? If it’s dirty, change it following the procedure in
the engine manufacturer’s owner’s manual.
 Is the spark plug clean? If it’s fouled or cracked, change it. If it’s oily,
leave it out, hold a rag over the plug hole and pull your recoil cord
several times to blow out any oil in the cylinder, then wipe off the
plug and reinsert it.
 Are you using fresh, clean unleaded gas? If it’s old, change it. Use a
fuel stabilizer if you keep gas longer than 30 days.
 Does your engine have the right amount of clean oil? If it’s dirty,
change it following the procedure in the engine manufacturer’s
owner’s manual.
 Check the oil level and adjust as needed.
Engine smokes.
(Please refer to the
engine user manual
for engine-specific
procedures.)
 Check the oil level and adjust as needed.
 Check the air filter and clean or replace if needed.
 You may be using the wrong oil—too light for the temperature. Refer
to your Engine Owner’s Manual for detailed information.
 Clean the cooling fins if they’re dirty.
Machine does not seem
to have full grinding
 The belts may be too loose and slipping. Adjust or replace belts as
needed.
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power.
 The teeth may be dull or broken, replace.
 Run engine at full RPM when grinding.
Parts Diagrams
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