Toro 22602 User manual

Form No. 3366-325 Rev A
13 hp Stump Grinder
Model No. 22602-Serial No. 310000001 and Up
Register your product at www.Toro.com
Operator’s Manual
Original Instructions (EN)

1
Introduction
Because in some areas there are local, state, or federal regulations requiring that a spark arrester
be used on the engine of this machine, a spark arrester is available as an option. If you require a
spark arrester, contact your Authorized Toro Service Dealer.
Genuine Toro spark arresters are approved by the USDA Forestry Service.
Important: It is a violation of California Public Resource Code Section 4442 to use or
operate the engine on any forest-covered, brush-covered, or grass-covered land without a
spark arrester muffler maintained in working order, or the engine constricted, equipped,
and maintained for the prevention of fire. Other states or federal areas may have similar
laws.
This spark ignition system complies with Canadian ICES-002.
Important: The enclosed Engine Owner’s Manual is supplied for information regarding
the US Environmental Protection Agency (EPA) and the California Emission Control
Regulation of emission systems, maintenance, and warranty. Replacements may be ordered
through the engine manufacturer.
© 2010—The Toro® Company Contact us at www.Toro.com
8111 Lyndale Avenue South All Rights Reserved
Bloomington, MN 55420 Printed in the USA

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The Stump Grinder is used to remove tree stumps. By moving the machine in sweeping
movements laterally over the top and front of the stump, the blade gradually grinds it away.
Only use the machine for removing tree stumps and exposed root systems. It is not intended for
any other use. Read this information carefully to learn how to operate and maintain your product
properly and to avoid injury and product damage. You are responsible for operating the product
properly and safely.
You may contact Toro directly at www.Toro.com for product and accessory information, help
finding a dealer, or to register your product.
Whenever you need service, genuine Toro parts, or additional information, contact an
Authorized Service Dealer or Toro Customer Service and have the model and serial numbers of
your product ready. Figure 1 identifies the location of the model and serial numbers on the
product. Write the numbers in the space provided.
1
Figure 1
1. Model and serial number location
Model No. ____________________________________________
Serial No. ____________________________________________
This manual identifies potential hazards and has safety messages identified by the safety alert
symbol (Figure 2), which signals a hazard that may cause serious injury or death if you do not
follow the recommended precautions.
Figure 2
1. Safety alert symbol

3
Contents
Introduction................................................1
Safety...........................................................4
Safe Operating Practices .........................4
Training...................................................4
Preparation...............................................4
Operating.................................................5
Slope Operation.......................................6
Maintenance and Storage ........................6
Safety and Instructional Decals................8
Controls.......................................................9
Throttle....................................................9
Safety Bail...............................................9
Parking Brake..........................................9
Hour Meter..............................................9
Specifications............................................10
Operating..................................................11
Before you Start.....................................11
Adding Fuel ..............................................12
Using Stabilizer/Conditioner.................13
Filling the Fuel Tank.............................13
Checking the Engine Oil Level...............14
Starting and Stopping the Engine .........15
Starting the Engine................................15
Stopping the Engine ..............................16
Grinding the Stump.................................16
Maintenance.............................................19
Recommended Maintenance Schedule..19
Cleaning the Cyclone Air Filter ............20
Replacing the Air Filter.........................21
Changing the Engine Oil.......................23
Changing the Oil ...................................23
Cleaning the Sediment Cup...................24
Servicing the Spark Plug.......................25
Removing the Spark Plug......................25
Installing the Spark Plug .......................25
Cutting Blade.........................................26
Replacing Cutting Blades......................26
Parking Brake Adjustment ....................27
Cleaning and Washing...........................27
Lubricating the Bearings.......................27
Drive Belt..............................................28
Belt Drive Adjustment...........................28
Storage ......................................................29
Troubleshooting.......................................30
Warranty ................................. Back Cover

4
Safety
Improper use or maintenance by the operator or owner can result in injury. To
reduce the potential for injury, comply with these safety instructions and always pay
attention to the safety alert symbol, which means: Caution, Warning, or Danger—
personal safety instruction. Failure to comply with the instruction may result in
personal injury or death.
Safe Operating Practices
This product is capable of amputating hands and feet. Always follow all safety
instructions to avoid serious injury or death.
Engine exhaust contains carbon monoxide, an odorless deadly poison that can kill
you. Do not run the engine indoors or in an enclosed area.
Training
• Read the Operator’s Manual and other training material. If the operator(s) or
mechanic(s) can not read English, it is the owner’s responsibility to explain this
material to them.
• Become familiar with the safe operation of the equipment, operator controls, and
safety signs.
• All operators and mechanics should be trained. The owner is responsible for training
the users.
• Never let children or untrained people operate or service the equipment. Local
regulations may restrict the age of the operator.
• The owner/user can prevent and is responsible for accidents or injuries occurring to
himself or herself, other people or property.
Preparation
• Inspect the area where the equipment is to be used and remove all objects such as
rocks, toys, and wire which can be thrown by the machine.
• Use extra care when handling gasoline and other fuels. They are flammable and
vapors are explosive.
-Use only an approved container
-Never remove the gas cap or add fuel with the engine running. Allow the engine
to cool before refueling. Do not smoke.
-Never refuel or drain the machine indoors.
• Check that the operator presence controls, safety switches, and shields are attached
and functioning properly.
• Check that the cutting blade stop rotating when you reduce the throttle.
• Do not operate unless all safety devises are attached and functioning properly.

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• Wear appropriate clothing including hardhat, safety glasses, long pants, safety shoes,
and hearing protection. Long hair, loose clothing or jewelry may get tangled in
moving parts.
Operation
• Never run an engine in an enclosed area.
• Only operate in daylight, keeping away from holes and hidden hazards.
• Be sure the parking brake is engaged before starting the engine. Only start the
engine from the operator’s position.
• Never operate with the guards not securely in place. Be sure all interlocks are
attached, adjusted properly, and functioning property.
• Do not change the engine governor setting or over speed the engine.
• Engage the parking brake and shut off the engine before leaving the operator’s
position for any reason.
• Keep hands and feet away from moving blades.
• Make sure you have a proper foothold when using the machine, particularly when
backing.
• Walk, don’t run when moving machine on location.
• Never work on wet grass. Poor traction may cause you to slip.
• Look behind and down before backing up to be sure of a clear path.
• Keep pets and bystanders away.
• Do not operate the machine under the influence of alcohol or drugs.
• Use care when loading or unloading the machine into a trailer or truck.
• Use care when approaching blind corners, shrubs, trees, or other objects that may
obscure vision.
• Ensure that the area is clear of other people before operating the unit. Stop the unit if
anyone enters the area.

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• Never leave a running unit unattended. Always stop the engine, set the parking
brake, before leaving.
• Watch for traffic when operating near or crossing roadways.
• Do not touch parts which may be hot from operation. Allow them to cool before
attempting to maintain, adjust, or service.
• Only operate the unit in areas where there is sufficient clearance for the operator to
safely maneuver the product.
• Before removing a stump, have the area marked for underground utilities, and do not
dig in marked areas.
• Locate the pinch point areas marked on the unit and keep hands and feet away from
these areas.
• Lightning can cause severe injury or death. If lightning is seen or thunder is heard in
the area, do not operate the machine; seek shelter.
Slope Operation
Slopes are a major factor related to loss-of-control and accidents, which can result in
severe injury or death. All slopes require extra caution.
• Do not operate the unit on hillsides or slopes exceeding 10 degrees.
• Remove obstacles such as rocks, tree limbs, etc. from the work area. Watch for
holes, ruts, or bumps, as uneven terrain could overturn the unit. Tall grass can hide
obstacles.
• Keep all movements on slopes slow and gradual. Do not make sudden changes in
direction.
• Do not operate near drop-offs, ditches, or embankments. The unit could suddenly
turn over if a wheel goes over the edge of a cliff or ditch, or if an edge caves in.
• Do not operate on wet grass. Reduced traction could cause sliding.
Maintenance and Storage
• Set the parking brake, stop the engine. Wait for all movement to stop before
adjusting, cleaning, or repairing.
• Clean debris from unit, drives, mufflers, and engine to help prevent fires. Clean up
oil or fuel spillage.
• Let the engine cool before storing and do not store near flame.
• Do not store fuel near flames or drain indoors.
• Park the machine on level ground. Never allow untrained personnel to service the
machine.
• Carefully release pressure from components with stored energy.
• Remove the spark plug wire before making any repairs
• Keep hands and feet away from moving parts. If possible, do not make adjustments
with the engine running.
• Keep all parts in good working condition and all hardware tightened. Replace all
worn or damaged decals.
• Keep nuts and bolts tight. Keep equipment in good condition.
• Never tamper with safety devices.

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• Keep the unit free of grass, leaves, or other debris build-up. Clean up oil or fuel
spillage. Allow the unit to cool before storing.
• Use extra care when handling gasoline and other fuels. They are flammable and
vapors are explosive.
-Use only an approved container.
-Never remove the gas cap or add fuel when the engine is running. Allow the
engine to cool before refueling. Do not smoke.
-Never refuel the unit indoors.
-Never store the unit or fuel container inside where there is an open flame, such
as near a water heater or furnace.
-Never fill a container while it is inside a vehicle, trunk, pick-up bed, or any
surface other than the ground.
-Keep container nozzle in contact with the tank during filling.
-Close the fuel valve for storage or transport
• Stop and inspect the equipment if you strike an object. Make any necessary repairs
before restarting.
• Use only genuine Toro replacement parts to ensure that original standards are
maintained.

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Safety and Instructional Decals
Safety decals and instructions are easily visible to the operator and are located
near any areas of potential danger. Replace any decal that is damaged of lost.
119-4701
-Warning - Read Operator’s Manual
-Warning - Train all product users
-Thrown objects - Keep bystanders away
-Thrown objects - Wear hard hat and
safety glasses, clean area of debris
-Rotating belt - Keep guard in place
-Explosion and electric shock hazard
-Call utilities to mark underground
hazards
-Warning - Stop engine before performing
maintenance operations
117-4979
-Rotating belt - Keep guard in place
119-4692
- Warning - Stop engine before lifting
119-4693
-Thrown objects - Keep by-standers away
119-4721
-Move throttle to engage/disengage blade
119-4690
-Warning, - Rotating blade
-Keep and hands and feet clear
-Stop rotating blade before servicing

9
Controls
Throttle:
The throttle lever controls engine speed.
With the lever down, in the DISENGAGED position the
engine runs at idle. This is also the starting position.
When the engine speed increases, to the ENGAGED
position, the centrifugal clutch engages and the cutting
blade rotates.
Safety Bail:
Hold the safety bail against the handle to deactivate the
engine kill switch so the engine will start. Releasing the
bail stops the engine.
Parking Brake:
The parking brake holds the left wheel from turning to
secure the machine and for easy movement of the
machine from side to side when grinding the stump.
Hour Meter:
The hour meter shows the hours the unit has been used
and runs only when the engine is running.

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Specifications
Model
Engine
Idling speed
Spark plug
Fuel tank volume
Tires
Brake
Drive Belt
Clutch
Cutters
Cutting depth
Length
Width
Height
Weight
22602
Honda GX390QXC9
1250-1550 RPM
NKGBPR6ES
6.5 liters/1.72 US Gal
13 x 5.00 - 6 (pneumatic)
Disk - Lever activated Direct
Double-banded - 3V section
Centrifugal clutch
12 - Tungsten carbide tips
Approx 12" (30.48 cm)
76" (193 cm)
29.5 (75 cm)
42" (107 cm)
240 lbs. (109 kg)

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Operation
Note: Determine the left and right sides of the
machine from the normal operating position.
Important: Before operating, check the fuel
and oil level, and remove debris from the
traction unit. Also, ensure that the area is clear
of people and debris. You should also know and
have marked the locations of all utility lines.
Before you start:
Dig away the earth and remove any stones near the
tree stump that may interfere with your work.
Check that the ground is free of foreign objects,
such as electrical cables, barbed wire, etc.
Cut or trim the stump as necessary using a power
saw.
Review all the machine’s safety decals.
Use a hard-hat, hearing, and eye protection. A
mesh visor alone does not provide sufficient eye
protection; supplement with protective glasses.
Make sure that you are familiar with safety
regulations and shutdown procedures described in
the Operator’s Manual.
Make sure that all guards are in place and in good
condition.
Make sure that the blades and cutters are in place
and in good condition.
Make sure that the work area, cutter, and stump in
particular are free from metallic objects such as
wire, nails, etc. that could be thrown out and injure
persons in the vicinity and damage the equipment.
Make sure that everyone, including children and
animals, maintain a distance of at least 50 feet
(15 m) from the machine. Debris can be thrown
out and injure people and animals.

12
Adding Fuel
Use unleaded gasoline (87 pump octane minimum). Leaded, regular gasoline may be used if
unleaded is not available.
In certain conditions, gasoline is extremely flammable and highly explosive. A fire or
explosion from gasoline can burn you and others and can damage property.
• Fill the fuel tank outdoors, in an open
area, when the engine is cold. Wipe up
any gasoline that spills.
• Never fill the fuel tank inside an
enclosed trailer.
• Do not fill the fuel tank completely full.
Add gasoline to the fuel tank until the
level is below the bottom of the strainer
neck. This empty space in the tank
allows gasoline to expand.
• Never smoke when handling gasoline,
and stay away from an open flame or where gasoline fumes may be ignited by a spark.
• Store gasoline in an approved container and keep it out of the reach of children. Never
buy more than a 30-day supply of gasoline.
• Do not operate without entire exhaust system in place and in proper working condition.
In certain conditions during fueling, static electricity can be released causing a spark
which can ignite the gasoline vapors. A fire or explosion from gasoline can burn you and
others and can damage property.
• Always place gasoline containers on the ground away from your vehicle before filling.
• Do not fill gasoline containers inside a vehicle or on a truck or trailer bed because
interior carpets or plastic truck bed liners may insulate the container and slow the loss
of any static charge.
• When practical, remove gas-powered equipment from the truck or trailer and refuel the
equipment with its wheels on the ground.
• If this is not possible, then refuel such equipment on a truck or trailer from a portable
container, rather than from a gasoline dispenser nozzle.
• If a gasoline dispenser nozzle must be used, keep the nozzle in contact with the rim of the
fuel tank or container opening at all times until fueling is complete.
Important: Do not use methanol, gasoline containing methanol, or gasohol containing
more than 10% ethanol because the fuel system could be damaged. Do not mix oil with
gasoline.

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Using Stabilizer/Conditioner
Use a fuel stabilizer/conditioner in the traction unit to provide the following benefits:
• Keeps gasoline fresh during storage of 90 days or less. For longer storage it is recommended
that the fuel tank be drained.
• Cleans the engine while it runs
• Eliminates gum-like varnish buildup in the fuel system, which causes hard starting
Important: Do not use fuel additives containing methanol or ethanol.
Add the correct amount of gas stabilizer/conditioner to the gas.
Note: A fuel stabilizer/conditioner is most effective when mixed with fresh gasoline. To
minimize the chance of varnish deposits in the fuel system, use fuel stabilizer at all times.
Filling the Fuel Tank
1. Park the traction unit on a level surface and stop the engine.
2. Allow the engine to cool.
3. Clean around the fuel tank cap and remove it.
Note: The cap is tethered to the fuel tank.
4. Add unleaded gasoline to the fuel tank, until the level is just below the bottom of the
strainer neck.
Important: This space in the tank allows gasoline to expand. Do not fill the fuel tank
completely full. 1 2
1. Maximum fuel level 2. Fuel tank top
5. Install the fuel tank cap securely, turning it until it clicks.
6. Wipe up any gasoline that may have spilled.

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Checking the Engine Oil Level
1. Park the unit on a level surface and stop the engine.
2. Clean around the oil dipstick
3. Unscrew the oil dipstick and wipe the end clean.
4. Slide the oil dipstick fully into the crankcase. Do not thread it in.
5. Pull the oil dipstick out and look at the end. Oil should be to the top of the upper limit range.
Note: Running the engine with low oil level can cause engine damage. This type of damage is
not covered by Warranty.
The engine is equipped with and Oil Alert system that will automatically stop the engine before
the oil level falls below the safe limit. To avoid the inconvenience of an unexpected shutdown,
fill to the upper limit, and check the oil level regularly.
1 3
2 4
1. Oil dipstick 2. Oil fill hole 3. Upper limit 4. Lower limit
6. If the oil level is low, slowly pour only enough oil into crankcase to raise the level to the upper
limit.
Important: Do not overfill the crankcase with oil because the engine may be damaged.
7. Replace the oil dipstick.

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Starting and Stopping the Engine
Starting the Engine
1. Move the fuel valve to the OPEN position, all the
way to the right.
2. Move the choke lever left to the ON position if you
are starting a cold engine.
Note: A warm or hot engine may not require choke.
3. Move the throttle to the DISENGAGE position.
4. Hold the safety bail against the handle and push the
handle down enough to raise the cutting wheel off
the ground.
5. Pull the starter handle lightly until you feel resistance, then pull briskly in the direction the
arrow show. Return the starter grip gently.
6. After the engine starts, gradually move the choke
lever back to the OFF position. If the engine stalls
or hesitates, move the choke back to the ON again
until the engine warms up. Then move to the full
OFF position.

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Stopping the Engine
1. Move the throttle to the DISENGAGE positions.
Note: If the engine has been working hard or is hot,
let it run for a minute before releasing the safety bail.
This helps to cool the engine before stopping. In an
emergency, the engine may be stopped immediately.
2. Release the safety bail to stop the engine.
3. Move the fuel valve to the CLOSED position, all
the way to the left.
Grinding a Stump
Place the stump grinder into position with cutting
blade near the front-top edge of the stump.
Set the parking brake to the lock position.
1. Set throttle to the DISENGAGE position.
1. Start the engine; refer to Starting the Engine.
2. Allow engine to warm up at idle for two minutes.
3. Push the handle down enough to raise the cutting
wheel off the ground.
4. Move throttle up to the ENGAGE position, this
will engage the centrifugal clutch and the cutting
blade rotates.
A rotating cutting blade is very DANGEROUS!
Keep bystanders away from thrown debris.

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5. Swing the cutting blade to one side, then lower it
approximately 1/2" to 1" into the front-top corner
of the stump. Swing the cutting blade back and
forth, lowering the cutting blade approximately
1/2" to 1" before each sweep, until you have
removed the front portion of the stump to ground
level.
6. Raise the cutting blade until center of cutting blade
is just above top of the stump.
7. With the cutting blade off to one side, release the
parking brake and advance the machine forward,
reset the parking brake.
8. Sweep the cutting blade across the stump, cutting
away 1/2" to 1" of stump.
9. Advance the machine forward 1/2" to 1", and
sweep across the stump in the opposite direction.
10. Continue sweeping and cutting blade left and right
across stump, advancing the machine before each
sweep, cutting 1/2" to 1" depth of cut with each
sweep.
11. Continue cutting until top level of stump is all
removed, making sure not to cut stump deeper than
ground level during this first stage.
12. Move throttle to the DISENGAGE position, push
the handle down enough to raise the cutting wheel
off the ground. Wait ten seconds for blade to stop
rotating then release brake and retract machine
from stump.

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Pull machine away from stump, and rake chips away
from stump.
13. Place stump machine into position with cutting
blade near the front-top edge of the stump.
14. Set brake to the lock position.
15. Move the throttle up to the ENGAGE position.
16. Complete cutting stump by repeating step 12 again
and again until entire stump is cut to desired depth.
17. Stop the machine; refer to Stopping the Engine.
DO NOT let front of unit touch ground until you are sure cutting wheel has stopped turning.
A rotating cutting blade is very DANGEROUS!
Stay at the operating position and be sure that the blade comes to a complete stop before doing
anything else.

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Maintenance
Recommended Maintenance Schedule
Maintenance
Service Interval Maintenance Procedure
Before each use or daily
• Check the engine oil level.
• Lubricate the cutting blade bearings. (Lubricate immediately after every
washing.)
• Check the air filter
• Check the safety bail switch
• Check the cutter blades for sharpness and missing or bent teeth
• Inspect the drive belt for wear and tension
• Remove debris from the unit
• Check for loose fasteners
• Check/replace safety and instructional decals
After the first 20 hours • Change the engine oil
Every 50 hours • Check/Replace the air filter (1)
• Inspect the drive belt for wear or damage
Every 100 hours • Change the engine oil (1) • Clean the sediment cup
• Check/adjust the spark plug
Every 300 hours • Replace the air filter paper element • Replace the spark plugs
• Replace the drive belt
Yearly or before
storage
• Change the engine oil
• Check/Replace the air filter
• Clean the sediment cup
• Check/adjust the spark plug
• Touch up chipped paint
(1) More frequently in dusty conditions
Important: Refer to your Engine Operator’s Manual for additional maintenance
procedures.