Troy-Bilt GTX 18 User manual

Models
13074- GTX 18 (18 HP)
13076-GTX 20 (20 HP)
131ol- GTX llt>(ttDHP)
Owner/Operator
Manual
GTX
Garden Tractor
• Safety
• Operation
• Maintenance
$7.50
Form 1772567 (1/96)
Supersedes 1770645 Rev. A (2/95)

Introduction
Thank you for purchasing this product. We feel you now own
one of the finest pieces of outdoor power equipment available.
All information in this manual is based on the latest product
information available at the time of printing. This manual is
considered a permanent part of the unit and must stay with the
unit if resold. This is a safety, operation, and general
maintenance manual which does not attempt to cover major
repairs.
Our equipment is carefully designed, engineered and
manufactured for excellent performance if properly operated and
maintained.
Table of Contents
SERVICE INFORMATION .... .. . .. ..... .. ..... .... . .. ... 3
Unit Service and Repair .... .................................. 3
Warranty Service .. ... ... ... ... ... . .. ... ... ... ... ... . .. .. .. ...... 3
Left and Right Sides ........................................... 3
Engine Serviee ............................................. ....... 3
Repair Manual .............. ...................................... 3
Replacement Owner Manual ............................... 3
SPARK ARRESTER WARNING .................... .... . 3
IDENTIFICATION NUMBERS ................. ~......... 3
SAFETY ................................................... 4
SAFETY DECAL .......................................... 9
ATTACHMENTS, KITS AND SPECIFICATIONS ....... 10
CONTROLS ............................................... 12
BEFORE OPERATION .................................... 14
OPERATION .............................................. 16
Starting Engine ................................................... 16
Throttle Setting ................................................... 16
Stopping Engine ................................................. 16
Interlock System ................................................ 17
Perform Electric Clutch Break-in Procedure ....... 17
Attachment/PTO Drive ........................................ 17
Hydraulic Attachment Lift ................................... 17
Auxiliary Hydraulic Connections ......................... 17
Hydrostatic Transmission ................................... 18
Travel Pedal ........................................................ 18
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Read this manual to familiarize yourself with the unit, its features,
and operation.
The unit has passed the rigid safety standards set by the Outdoor
Power Equipment Institute and an independent testing laboratory.
The unit's warranty statement is included on the back cover of
this manual. Read it thoroughly. Also, please complete and
return the postage-paid owner registration card included with this
manual. This card registers each unit and owner at the factory in
order to provide bulletins and safety literature.
Light Switch ....................................................... 18
Moving Tractor ManHally .................................... 19
Cruise Control .................................................... 19
Brake/Neutral Pedal ............................................ 19
LUBRICATION AND MAINTENANCE ................... 20
Checking Engine Oil Level .................................. 20
Changing Engine Oil ........................................... 20
Changing Engine Oil Filter .................................. 20
Engine Air Intake Screen .................................... 21
Engine Air Cleaner .............................................. 21
Fuel Filter ............................................................ 21
Carburetor .......................................................... 22
Battery ................................................................ 22
Spark Plugs ........................................................ 22
Front Axle Adjustment ........................................ 22
Front Wheel Alignment ....................................... 22
Power Steering ................................................... 22
Proper Jack Placement ....................................... 23
Interlock Switches .............................................. 23
Brake Adjustment ............................................... 23
Hydrostatic Maintenance and Lubrication .......... 23
Travel Pedal Adjustment ..................................... 24
Hydrostatic Neutral Adjustment .......................... 24
Lubrication Chart ................................................ 25
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Troubleshooting Chart ........................................ 26
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Storage ............................................................... 27
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Maintenance Chart ............................................. 27

Service Information
Unit Service and Repair Engine Service
Contact your authorized dealer to service the unit. Provide your
dealer with the unit's model/serial number and the part's
description. Do not return parts directly to the factory.
For engine service, contact your authorized engine dealer. To
locate your authorized engine dealer, refer to the "Yellow Pages"
under "Engines-Gasoline" or "Gasoline-Engines". Provide your
dealer with the engine model and serial numbers.
Warranty Service
The warranty for the unit is printed on the back cover of this
manual. Warranty service is available from your authorized
dealer.
Left and Right Sides
Left and right sides of the unit are determined from the operator's
position, facing the direction of forward travel.
Repair Manual
A repair manual is available from your dealer.
Replacement Owner/Operator Manual
A replacement owner/operator manual is available, from the
factory. To order, call or write to the address on the back cover
of this manual.
Identification Numbers
For prompt service, provide your authorized dealer with the identification numbers of the unit. The unit's identification
numbers are located on a decal, beneath the seat, on the rear fender. For prompt service, provide your authorized
dealer with these identification numbers. Fill in the spaces below with these identification numbers for future
reference.
Date of Purchase: Transmission Model/Serial Number:
Unit Serial Number:
Engine Model/Serial/Spec. Numbers:
NOTE: Model number of this unit is the first five numbers of the model/serial number.
WARNING: Engine exhaust from this product contains chemicals known
to the State of California to cause cancer, birth defects or other reproductive harm.
A WARNING
OPERATORS IN CALIFORNIA AND OTHER APPLICABLE STATES.
Under California law, and under the laws of several other states, it is not lawful to operate an internal combustion engine using hydrocarbon
fuels on any forest covered, brush covered, or grass covered land; or on land covered with grain, hay, or other flammable agricultural
crops, without an engine spark arrester installed and in continuous effective working order.
The internal combustion engine on this unit burns gasoline, a hydrocarbon fuel. Therefore, this unit must be equipped with a spark arrester
muffler in continuous effective working order. The spark arrester must be attached to the engine exhaust system in such a manner that
flames or heat from the system will not ignite flammable material. Failure of the owner/operator of this unit to comply with this regulation
is a misdemeanor under California law, and may also be a violation of other state and/or federal regulations, laws, ordinances, or codes.
Contact the local fire marshal or forest service for specific information about which regulations apply in your area.
3

Section 1
Safety
Important!
Safe Operating Practices for This Unit
This is a safety alert symbol. It is used in this manual and on decals on the unit to alert you to .
potential
hazards. Whenever you see this symbol, read and obey the safety message that follows 1t.
Failure to obey the safety message could result in personal injury or property damage.
Introduction
1. Unit is capable of amputating
hands and feet and throwing
objects. Failure to observe the
following safety instructions could
result in serious injury or death.
2. Serious accidents which may cause
injury or property damage can occur
if the following safety guidelines are
not followed. Operator is solely
responsible for accidents or hazards
that occur when using unit.
Preventing accidents is the
responsibility of every equipment
operator. Accidents can be prevented.
Be careful before, during and
immediately after use of any powered
equipment. The following general
safety precautions must be fully
understood and followed during
operation. Review these instructions
frequently and never take chances. If
you do not understand any part of
this manual or need assistance,
contact your dealer or our service
department.
4
Training
1. Read, understand and follow all
instructions in this manual and on
unit before starling. A free
replacement manual is available from
the factory. To order a replacement
manual, contact the factory at the
address indicated in this manual.
Provide the model/serial number of
unit when ordering.
2. Read and understand the operator's
manual provided with each
attachment used with this unit.
3. Read the engine operation and
maintenance manual provided with
this unit before operation. Read and
follow all safety instructions provided
in that manual.
4. Only allow responsible adults, who
are familiar with the instructions, to
operate the unit.
5. Know the location and function of all
controls before operating unit. Know
how to stop engine and attachments
quickly in case of emergency.
Familiarize yourself with all safety and
operation decals on unit and
attachments. If these decals are
damaged or not legible, clean or
replace them as needed.
Preparation
1. Wear proper clothing when operating
unit. Always wear sturdy footwear
(preferably steel-toed shoes) and
hearing protection during operation.
a. Wear heavy leather gloves
whenever working near or
servicing any cutting edges on
unit.
b. Do not wear loose-fitting clothing,
jewelry, scarves, ties, etc., which
may get caught in moving parts.
Tie up or restrain long hair.
c. Do not operate unit while
barefoot. Do not wear sandals.
d. Wear long trousers.
e. Wear hearing protection.
2. Do not operate unit when tired, ill or
under the influence of alcohol and/or
other drugs.
3. Be prepared for an emergency. Keep
afirst aid kit and fire extinguisher
handy. Keep emergency telephone
numbers for ambulance, fire, ~
hospital, doctor and rescue near your .. j
telephone.

Before Operation
1.
2.
3.
4.
Before each use, clear work area of
objects such as rocks, toys, wire,
etc., which could be picked up and
thrown by mower blades.
Keep unit in safe operating condition.
Check the following each time before
starting unit:
a. All hardware for tightness
(especially blade mounting
hardware-check for proper
torque specifications frequently in
this area--refer to maintenance
section of attachment owners
manual).
b. Brakes, steering and other major
controls for proper operation.
c. Inspect mower blades for wear or
damage. Broken pieces thrown
from a worn or damaged blade
can cause serious injury.
d. Check for and maintain correct
tire pressure. Check tires for cuts
or bubbles. Check wheels for
damage or missing hardware.
Repair or replace as required.
e. Check engine oil level and add oil
as required. If oil level is below
"ADD" mark, DO NOT run engine.
Do not operate unit or attachments
without safety devices and shields in
place and operating properly.
Only use attachments which are
approved for use with this unit.
Contact our service department if
there is a question whether an
attachment is approved for unit.
5. When using attachments, use wheel
weights (where required) for extra
traction and proper balance.
6. Check brake function frequently.
Adjust and service as required. See
"Brake Adjustment" in "Maintenance"
section.
7. Unit is equipped with a safety
interlock system, designed to shut off
engine when operator leaves seat
while an attachment is running or if
parking brake is not engaged. If the
interlock system is not working
properly, repair it before operating
this unit.
CORRECT ANY MALFUNCTION BEFORE
USING THIS UNIT OR ATTACHMENTS!
Handling Gasoline
1. Use extra care in handling gasoline
and other fuels. Gasoline and its
vapors are volatile and dangerous.
Keep gasoline and gasoline
containers away from hot engine
exhaust. Never allow flame, sparks,
smoking materials or other hot
objects near gasoline or gasoline
fumes.
2. Wipe up spilled gasoline immediately.
Only use approved gasoline
containers.
3. Leave two inches of air space at top
of fuel tank to allow room for
expansion.
4. Store gasoline in a cool, well-
ventilated area. Never store unit or
fuel container inside where there is an
open flame, such as a hot water
heater, furnace, etc.
Safety (continued)
5. Never remove fuel fill cap, or add fuel
to fuel tank, if engine is running or
hot. Always replace fuel fill cap before
starting engine.
6. Never refuel unit indoors. Refuel
outdoors in a well-ventilated area.
Operation
1. When starting engine:
a. Disengage attachmenVPTO
(Power Take-Off) drive.
b. Set parking brake.
2. Remain seated when starting engine
and during operation. Always operate
unit with feet flat on running boards.
3. Keep hands, feet, face, hair and
clothing away from rotating parts.
Stop engine before removing grass
catcher or unclogging chute.
4. When operating a mower deck:
a. Mow only in daylight or in good
artificial light.
b. Never dismount to make a cutting
height adjustment while the
engine is running.
c. Disengage attachmenVPTO drive,
shut off engine, remove ignition
key and wait for all moving parts
to stop before unclogging
discharge chute, mounting grass
catcher or Grass Reduction
System (GRS).
5. Disengage attachmenVPTO drive
when transporting unit to work area
or when attachments are not in use.
6. Be aware of attachment discharge
direction and do not point it at
anyone. Do not operate mower decks
without either the entire grass catcher
or the guard in place.
5

Safety (continued)
7.
If you strike a foreign object,
17. Never leave a running machine
Slope Operation
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disengage attachment/PTO drive,
unattended. Always turn off
shut off engine, wait for all moving attachment/PTO drive, set parking
parts to come to a stop. Remove
brake, stop engine and remove key
ignition key. Inspect for and repair
before dismounting.
any damage before operating
equipment again.
8. Never carry passengers. Passengers
Children
interfere with the safe operation of
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this unit. Passengers could be struck
by foreign objects and/or thrown
1. Slopes are a major factor in loss-of-
from unit and could be severely
control and tip-over accidents which
injured.
can result in severe injury or death.
All slopes require extra caution. If
9.
Be sure area is clear of other people
you cannot back up the slope or if
before mowing. Stop machine if
you feel uneasy on it, do not
anyone enters the area. Do not
operate this unit on the slope.
operate unit with children, pets or
1.
Tragic accidents can occur if the
2.
Remove ·obstacles such as rocks, tree
others nearby.
operator is not alert to the presence
limbs, etc.
10. As a general rule, do not mow in
of children. Children are often
reverse. Disengage power to mower
attracted to the machine and the
3. Watch for holes, ruts, or bumps.
attachments before backing up. If it is
mowing activity. Never assume that
Uneven terrain could overturn the
absolutely necessary to back up:
children will remain where you last
machine. Tall grass can hide
saw them.
obstacles.
a.
Check area on ground directly
2.
Never allow children to operate this
4. Always mow up and down the face of
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behind unit. unit,
even under adult supervision.
slopes, never across. Do not mow
!
b.
Continue to observe area down
Local regulations may restrict
near dropoffs, ditches or
and to rear while backing up.
operator age. Only allow responsible
embankments. The unit could
11. Approach blind corners cautiously.
adults, who are familiar with these
suddenly overturn if a wheel goes
12.
Always observe the terrain. Watch for
instructions, to operate this unit.
over the edge of acliff or ditch, or if
and avoid obstacles. Stay away from
3.
Never carry children as passengers.
an edge caves in.
holes, ditches, soft or steep
Do not carry ANY passengers. They
5.
When using attachments on slopes,
embankments and other potentially
may fall off and be seriously injured
use wheel weights, as indicated in
dangerous terrain. Tall grass can hide
or interfere with safe machine
Section 2, "Attachments and Kits",
obstacles.
operation.
for extra traction and correct balance.
13.
Wet surfaces reduce traction and
4.
Keep children out of the work area
6.
Do not turn on slopes unless
stability. Always maintain proper
and under the watchful care of
necessary, and then, turn off
traction. Grip the steering wheel
another responsible adult.
attachment drive and turn slowly and
firmly.
5.
Be alert and turn machine off if
gradually downhill.
14.
Slow down before turning.
children enter the area.
7.
Do not start or stop suddenly when
15.
Do not install an automotive-type ball
6.
Before and when backing, look
going up or down a slope. Keep all
movement on slopes slow and
hitch on this unit. When pulling
behind and down for small children.
gradual. Do not make sudden
loads:
7.
Use extra care when approaching
changes in speed or direction.
a.
Use approved hitch points.
blind corners, shrubs, trees or other
b.
Limit loads to those which can be
objects that may obscure vision.
safely controlled.
8.
Keep children away while performing
16.
Watch out for traffic when operating
maintenance or adjustments.
near or crossing roadways.
6

8. If unit is unable to continue moving
uphill, disengage attachment drive
(PTO), check area on ground
immediately behind unit, watch area
to rear and proceed backward slowly.
9. Do not operate unit on steep slopes
where there is a risk of an overturn.
Do not mow slopes with an incline
of more than 10°. Use the Slope
Gauge, included with your unit, as an
aid in determining the incline of a
slope.
10. Use extra care with grass catchers or
other attachments. These can change
the stability of unit.
11. Do not operate unit on wet grass.
Reduced traction could cause sliding.
12. Do not try to stabilize unit by putting
your foot to the ground.
13. Do not park unit on a hill.
Stopping
1. Before leaving operator's position or
before leaving tractor unattended:
a. Bring unit to a complete stop.
b. Disengage attachment/PTO drive.
c. Lower attachments to ground.
d. Set parking brake.
e. Shut off engine and remove
ignition key.
f. Wait for all moving parts to come
to a complete stop.
2. Disengage attachment/PTO drive
when transporting tractor or when
attachments are not in use.
. Maintenance
A WARNING
BEFORE PERFORMING ANY
MAINTENANCE OR ADJUSTMENTS TO
THE TRACTOR, ENGINE OR
ATTACHMENTS: DISENGAGE THE
ATTACHMENT/PTO DRIVE, SHUT OFF
THE ENGINE AND WAIT FOR ALL
MOVING PARTS TO STOP. SET THE
PARKING BRAKE AND ALLOW THE
ENGINE AND MUFFLER TO COOL.
1. Before performing any service,
adjustments or maintenance on
unit, engine or attachments:
a. Park unit on a firm and level
surface.
b. Disengage attachment (PTO)
drive.
c. Lower attachments.
d.
Move all control levers to
"Neutral".
e.
Apply parking brake.
f.
Shut off engine. Remove
ignition key and allow engine to
cool.
2. Always wear sturdy footwear
(preferably steel-toed shoes), long
trousers, hearing and eye protection
while doing any maintenance on unit.
Do not wear loose-fitting clothing,
jewelry, scarves, ties, etc., which
could get caught in moving parts. Tie
up or restrain long hair.
3. Mower blades are extremely sharp.
Use caution when servicing. Wear
gloves or wrap blades in rags. Wear
eye protection when sharpening
blades.
Safety (continued)
4. Keep children away while performing
maintenance or adjustments.
5. Provide safe, adequate light in your
work area. NEVER USE AN OPEN
FLAME FOR ILLUMINATION! Use
only a portable safety light enclosed
in a wire cage for working inside or
under unit.
NOTE: Hot filamimts from a broken light
bulb can ignite spilled fuel or oil.
6. Never "feel" for hydraulic system
leaks. Hydraulic fluid could leak at
high pressure and temperatures and
could penetrate and burn skin.
7. Keep nuts and bolts tight (especially
blade mounting hardware-check for
proper torque specifications
frequently in this area--refer to
maintenance section of attachment
owners manual). Keep equipment in
good condition.
8. Never tamper with safety devices.
Check their proper operation
regularly. Repair or replace as
necessary.
9. Keep machine free of grass, leaves or
10.
other debris build-up. Clean up oil or
fuel spillage. Allow machine to cool
before storing.
Grass catcher components are
subject to wear, damage and
deterioration, which could expose
moving parts or allow objects to be
thrown. Check their proper operation
regularly. Repair or replace as
necessary
11. Frequently check components and
replace when necessary. Use only
factory- approved replacement parts.
Parts manufactured by others may
present safety hazards even though
they may fit on the unit.
12. Replace muffler if worn or defective.
13. Keep all safety and operation decals
in place. If these decals are damaged
or not legible, clean or replace them
as needed. Refer to the parts catalog
for decal description and location.
7

Safety (continued)
14. Check brake operation frequently. Engine
Adjust and service as necessary as
indicated in Section 7 "Maintenance".
15. Chock wheels (place blocks of wood
in front and behind wheels) when
performing maintenance with the
parking brake off. Securely support
unit if it must be raised for any
reason.
1 6. Check wheel attachment hardware
regularly and ensure it is properly
secured.
17. Do not attempt to mount a tire on a
wheel rim unless you are experienced
in doing so. Follow proper safety
precautions and use proper tools.
Mounting a wheel improperly could
result in serious injury or death.
18. Do not inflate tires above
recommended pressures. Use a clip-
on chuck to inflate tires, with an
extension hose long enough to allow
you to stand to one side and NOT
over or in front of the tire assembly.
19.
Towing or pushing unit with another
vehicle will damage transmission.
Push unit by hand only.
20.
Use a heavy-duty trailer to transport
unit. Lower attachments to trailer
bed. Set parking brake. Fasten unit
securely to trailer with straps, chains
or cables. Unit must be secured to
trailer facing forward.
21.
Use extra care when loading or
unloading the machine into a trailer
or truck.
22.
Do not use food or beverage
containers to store waste materials.
Using such containers could result in
accidental poisoning.
8
1. Read the provided engine operation
and maintenance manual completely
before operation. Read and follow all
safety instructions provided in that
manual.
2.
3.
4.
5.
6.
BEFORE SERVICING ENGINE:
Disconnect spark plug wire and keep
it from touching spark plug.
Keep engine free of grass, leaves, oil
and grease.
Engine exhaust is extremely hot.
Keep grass, oil, fuel and other
combustible materials far away from
engine exhaust.
Do not change engine governor
setting. Over-revving may damage
engine and will void warranty.
Never run an internal combustion
engine inside a closed area. Engine
exhaust contains carbon monoxide
gas, a deadly poison. Carbon
monoxide is odorless, colorless and
tasteless. Do not operate unit near
buildings, windows or air
conditioners. If engine is run in a
garage, open all doors and allow for
adequate ventilation.
Battery
A DANGER
BATTERIES PRODUCE EXPLOSIVE
GASSES. KEEP OPEN FLAMES AND
SPARKS AWAY. DO NOT SET TOOLS
ACROSS TERMINALS.
BATTERY ELECTROLYTE CAN CAUSE
SEVERE BURNS. EYE CONTACT CAN
CAUSE BLINDNESS. ALWAYS WEAR EYE
PROTECTION AND RUBBER GLOVES
WHEN WORKING NEAR THE BATTERY.
NEVER WEAR JEWELRY.
IF ELECTROLYTE CONTACTS SKIN OR
EYES, RINSE IMMEDIATELY WITH
WATER FOR AT LEAST 15 MINUTES.
CALL PHYSICIAN IMMEDIATELY.
1. BEFORE WORKING WITH
ELECTRICAL WIRES OR
COMPONENTS: Disconnect the
battery ground (negative) cable first.
Disconnect the positive cable
second. The battery ground (-) cable
must be disconnected first and
reconnected last.
2. Before attempting to charge battery,
understand and follow correct
procedure or bring battery to a
factory-authorized dealer for
charging. Do not charge a frozen
battery.
3. Battery electrolyte can cause severe
burns. Eye contact can cause
blindness. Always wear approved
safety goggles when working around
the battery.

4. If electrolyte contacts skin or eyes:
a. Flush affected area with water.
b. Apply baking soda to neutralize
acid.
c. Flush eyes with water for 10-15
minutes.
d. Call a physician immediately.
5. If electrolyte is swallowed:
a. Drink large amounts of water or
milk.
b. Follow by drinking milk of
magnesia, beaten eggs or
vegetable oil.
c. Call a physician immediately.
6. Electric storage batteries give off
highly explosive hydrogen gas while
charging and continue to do so for
some time after receiving a steady
charge. Do not, under any
circumstances, allow an electric spark
or an open flame near the battery. Do
not lay tools across the battery
terminals as this may result in a spark
or a short circuit which may cause an
explosion.
Storage
1. Do not store unit inside a building
where fumes from fuel in fuel tank
may reach an open flame or spark.
Allow unit to cool before moving it
inside an enclosure. Use a gasoline
storage stabilizer when storing unit.
2. Keep unit and fuel supplies securely
locked away to help prevent access
by children.
3. Remove ignition key.
4. Disconnect battery cables or remove
battery if unit is to be stored for an
extended period. Remove negative
(ground) cable first. Re-connect
negative(-) cable last.
5. Fully charge battery before storage.
Store battery in a cool, dry place, out
of reach of children.
Safety Decal
Read and understand the instructions and
safety information on decals placed on the
unit. Keep safety and instruction decals
clean, legible, and intact. If the decals are
worn or illegible, order replacements and
place them on the unit.
Refer to the accompanying parts catalog
for the location and part numbers of
additional decals.
NOTE: MAINTENANCE DECAL IS UNDER
HOOD.
Safety (continued)
9

Section2
Attachments, Kits & Specifications
10
Specifications
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Engine ..................................... 16 HP Briggs and Stratton (GTX 16)
MODEL# 303447 Type 1216 (Vanguard)
18 HP Kohler (GTX 18)
CH 18 (Command) SPEC #PS-551 084
20 HP Kohler (GTX 20)
CH 20 (Command) SPEC #PS-251776
Governor Speed ................................................. 3600 +1- 75 RPM
Start ...................................................................................... Electric
Transmission ........................................ Eaton Model11 Hydrostatic
Transaxle ...................... Garden Way- Single Speed (GTX 16 & 18)
Garden Way- Two Speed (GTX 20)
Speeds ................................................................... Infinitely Variable
Forward ...............................................0- 6.8 mph (GTX 16 & 18)
0- 3.3 mph (GTX 20 Low)
0- 9 mph (GTX 20 High)
Reverse ................................................ o- 2.7 mph (GTX 16 & 18)
0- 4.29 mph (GTX 20)
Fuel Capacity ................................................... .4.3 Gallons (16.3 L)
Attachment/PTO Drive ......................................................... Electric
Attachment/PTO Drive (PTO) Speed ................................. 2000 RPM
Lift ..................................................................................... Hydraulic
Battery ....................................................................... 12 V/360 CCA
Turning Diameter ............................ Curb to Curb: 173 in. ( 439 em)
Inside Rear Wheel: (175 em)
Shipping Weight ........................................... 765 lbs. (GTX 16 & 18)
815 lbs. (GTX 20)
Ground Clearance ....................................................... Front: 6.5 in.
Rear: 7.0 in.
Wheel Base .................................................................. 49" (124 em)
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