Gravely Lawn Mower 915015 1742 ZT 9150156 2048 ZT User Guide

ZT Zero Turn Mower  
Owner/Operator Manual  
Models  
915015 - 1742 ZT  
915016 - 2048 ZT  
ENGLISH  
FRANÇAIS  
ESPAÑOL  
01562700A 8/00  
Supersedes 01562700  
Printed in USA  
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CONTROLS AND FEATURES  
ENGLISH  
1. Steering Control Levers  
2. Battery Compartment  
3. Ignition Switch  
4. Power Take Off (PTO)  
Switch  
5. Throttle Control (2048)  
Throttle/Choke Control  
(1742)  
11  
1
6. Choke Control (2048)  
7. Parking Brake Lever  
8. Attachment Lift Lever  
9. Foot Rest  
2
10. Fuel Level Indicator  
Window  
11. Fuel Tank Cap  
12. Discharge Chute  
13. Anti-Scalp Rollers  
14. Belt Cover  
7
10  
8
16  
9
15. Attachment Lift Lever  
Lock  
16. Locking Lever  
FRANÇAIS  
1. Leviers de commande  
de direction  
2. Compartiment batterie  
3. Clé de contact  
4. Commande de la PdF  
5. Manette des gaz (2048)  
Manette des gaz/starter  
(1742)  
15  
14  
6. Starter (2048)  
12  
7. Frein de stationnement  
8. Levier de relevage de  
l’outil  
13  
9. Repose-pied  
OE0680  
10. Regard de l’indicateur  
de niveau de carburant  
11. Bouchon du réservoir  
de carburant  
12. Goulotte d’évacuation  
13. Rouleaux anti-scalp  
14. Couvercle de la courroie  
15. Dispositif de verrouillage  
du levier de relevage de  
l’outil  
3
5
6
16. Levier de verrouillage  
4
OE0860  
WARNING  
The engine exhaust from this product  
contains chemicals known to the State  
of California to cause cancer, birth  
defects or other reproductive harm.  
OL4030  
3
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ESPAÑOL  
1. Palancas de control  
de dirección  
2. Compartimento de la  
batería  
3. Interruptor de encendido  
4. Interruptor de la toma de  
fuerza (TDF)  
5. Control del acelerador  
(2048)  
Control del acelerador/  
estrangulador (1742)  
6. Control del estrangulador  
(2048)  
7. Palanca del freno de  
estacionamiento  
8. Palanca de elevación  
del accesorio  
9. Reposapiés  
10. Ventana del indicador del  
nivel de combustible  
11. Tapón del depósito del  
combustible  
12. Tolva de descarga  
13. Rodillos antidesbrozo  
14. Cubierta de la correa  
15. Traba de la palanca de  
elevación del accesorio  
16. Palanca de traba  
4
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TABLE OF CONTENTS  
Controls and Features. . . . . . . . . . . . . . . . . . . . 3  
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28  
Attachments and Accessories . . . . . . . . . . . . 29  
Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . 29  
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . 30  
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 32  
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33  
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
Service and Adjustments . . . . . . . . . . . . . . . . 22  
INTRODUCTION  
THE MANUAL  
UNAUTHORIZED REPLACEMENT PARTS  
Before operation of unit, carefully and completely read  
your manuals. The contents will provide you with an  
understanding of safety instructions and controls  
during normal operation and maintenance.  
Use only Gravely replacement parts. The replacement  
of any part on this vehicle with anything other than a  
Gravely authorized replacement part may adversely  
affect the performance, durability, or safety of this unit  
and may void the warranty. Gravely disclaims liability  
for any claims or damages, whether warranty, property  
damage, personal injury or death arising out of the use  
of unauthorized replacement parts.  
All reference to left, right, front, or rear are given from  
operator standing in operation position and facing the  
direction of forward travel.  
MODEL AND SERIAL NUMBERS  
DELIVERY  
When ordering replacement parts  
Customer Note:Your unit should be ready to run when  
you take delivery.Your retailer is required to review  
important information in this manual with you before or  
upon delivery of the unit or attachment.  
Transfer  
model & serial  
number label  
from product  
registration  
here.  
or making service inquiries, know  
the Model and Serial numbers of  
your unit and engine.  
Numbers are located on the product  
registration form in the unit literature  
package. They are printed on a  
serial number label, located on the  
frame of your unit.  
Retailer should:  
1. Check to make sure all assembly steps have  
been properly completed.  
2. Fill out original purchaser registration card and  
return the card to Gravely.  
Serial  
Number  
Label  
3. Explain Limited Warranty Policy.  
4. Explain recommended lubrication and  
maintenance. Advise customer on adjustments.  
5. Instruct customer on controls and operation of  
unit. Discuss and emphasize the Safety  
Precautions. Give customer Product Manuals.  
Advise customer to thoroughly read and  
understand them.  
OE0750  
Record Unit Model and Serial numbers here.  
DISCLAIMER  
Gravely reserves the right to discontinue, make  
changes to, and add improvements upon its products  
at any time without public notice or obligation.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 unit.  
Record Engine Model and Serial numbers here.  
PRODUCT REGISTRATION  
A warranty registration card must be filled out, signed,  
and returned at time of purchase. This card activates  
the warranty. Claims meeting requirements during  
limited warranty period will be honored.  
5
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SAFETY  
SAFETY ALERTS  
SAFETY DECALS AND LOCATIONS  
Look for these symbols to point out  
important safety precautions. They mean:  
ALWAYS replace missing or damaged Safety Decals.  
Refer to figure below for Safety Decal locations.  
Attention!  
Personal Safety Is Involved!  
Become Alert!  
1
Obey The Message!  
4
WARNING/AVERTISSEMENT/ADVERTENCIA  
The safety alert symbol is used in decals on the unit  
and with proper operation procedures in this manual.  
Understand the safety message. It contains important  
information about personal safety on or near the unit.  
´
FOR SAFE DECK REMOVAL/POUR UNE DÉPOSE DU CARTER DE COUPE EN TOUTE SÉCURITÉ /PARA LA EXTRACCION SEGURA DE LA PLATAFORMA  
1
1
5
4
3
2
1
2
2
3
052240  
DANGER: IMMINENTLY HAZARDOUS  
SITUATION! If not avoided, WILL RESULT in  
death or serious injury.  
WARNING: POTENTIALLY HAZARDOUS  
SITUATION! If not avoided, COULD RESULT  
in death or serious injury.  
3
CAUTION: POTENTIALLY HAZARDOUS  
SITUATION! If not avoided, MAY RESULT in  
minor or moderate injury. It may also be used  
to alert against unsafe practices.  
5
NOTATIONS  
NOTE: General reference information for proper  
operation and maintenance practices.  
IMPORTANT: Specific procedures or information  
required to prevent damage to unit or attachment.  
DANGER/DANGER/PELIGRO  
PRACTICES AND LAWS  
2
Practice usual and customary safe working  
precautions, for the benefit of yourself and others.  
Understand and follow all safety messages. Be alert to  
unsafe conditions and the possibility of minor,  
moderate, or serious injury or death. Learn applicable  
rules and laws in your area.  
OE0810  
1. DANGER  
TO AVOID SERIOUS INJURY OR DEATH  
Read operator’s manual.  
REQUIRED OPERATOR TRAINING  
OL1801  
Original purchaser of this unit was instructed by the  
seller on safe and proper operation. If unit is to be used  
by someone other than original purchaser; loaned,  
rented or sold, ALWAYS provide this manual and any  
needed safety training before operation.  
Do not mow when children or others  
are around.  
OL4140  
Look down and behind before and  
while backing.  
OL4100  
6
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Never carry children, even if mower is  
disengaged.  
4. WARNING - FOR SAFE DECK REMOVAL  
Avoid injury from stored energy in lift assist spring.  
Lift lever can spring up  
quickly if released while  
mower deck is removed.  
Do not unlock attachment  
lift lever when mower deck  
OL4110  
OL4120  
is removed.  
OE0770  
Remove objects that could be thrown  
by the blade.  
Before removing the  
mower deck, lower the  
1
5
attachment lift lever to  
position 1, then latch  
and lock the lock pin.  
4
3
2
1
OL0910  
OL4130  
Go up and down slopes, not across.  
Do not operate on slopes that exceed  
10°.  
2
OE0780  
To properly latch and lock  
the lock pin.  
1
Pull the pin out of the  
latched unlocked position.  
If machine stops going uphill, stop blade and  
back down slowly.  
Rotate the lock pin  
downward 90°.  
2
Avoid sudden turns  
3
OE0790  
Keep safety devices (guards, shields, switches,  
etc.) in place and working.  
Push lock pin in to  
locked position.  
Check interlock system per manual before use.  
Understand location and function of all controls.  
5. AVOID HOT SURFACES  
HOT SURFACES! DO NOT touch  
2. DANGER ROTATING PARTS  
Always keep feet and hands away  
parts which are hot from operation.  
Always allow parts to cool.  
OS0732  
from rotating parts.  
OL3030  
SAFETY RULES  
Operation  
Read, understand, and follow all instructions in the  
manual and on the machine before starting:  
Keep people away from unit while  
operating.  
OL3292  
How to operate all controls  
Shut off engine, remove key, read  
manual before you adjust or repair  
unit.  
The functions of all controls  
How to stop in an emergency  
Braking and steering characteristics  
Turning radius and clearances  
OL4010  
NO STEP! Always keep feet away  
from rotating parts.  
ALWAYS keep protective structures, guards, and  
panels in good repair, in place and securely fastened.  
OL4420  
Complete a walk-around inspection of the unit and  
work area.  
3. KEEP GUARDS IN PLACE  
Always stand clear of the discharge  
ALWAYS disengage PTO, stop unit and engine, remove  
key, engage parking brake and allow moving parts to  
stop before leaving operators position.  
area when operating this unit.  
ALWAYS remove key to prevent unauthorized use.  
OL4430  
Check for weak spots on dock, ramps or oors. Avoid  
uneven work areas and rough terrain.  
ALWAYS keep discharge cover or  
complete grass catcher in place and  
in proper working condition.  
Dust, smoke, fog, etc. can reduce vision and cause an  
accident. Mow only in daylight or good articial light.  
OL3320  
Watch for trafc when operating near or crossing  
roadways.  
7
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Only allow responsible adults who are trained and  
familiar with the instructions to operate the machine.  
Do not park on slopes unless necessary.When parking  
on slope always chock or block wheels. Always set  
parking brake.  
Training includes actual operation.  
Know the weight of loads. Limit loads to those you can  
safely control and the unit can safely handle.  
Clear the area of objects such as tree branches, rocks,  
toys, wire, etc., which could be picked up and thrown by  
the blades. Tall grass can hide obstacles.  
Use only attachments or accessories designed for your  
unit.  
Be sure the area is clear of people before mowing.  
Stop machine if anyone enters the area.  
Check attachment components frequently. If worn or  
damaged, replace with manufacturers recommended  
parts.  
Use extra care when approaching blind corners,  
shrubs, trees, or other objects that may obscure vision.  
Watch for holes, ruts, or bumps. Uneven terrain could  
overturn the machine.  
Personal  
Never carry passengers.  
Do not mow in reverse unless absolutely necessary.  
Always look down and behind before and while  
backing.  
Always wear safety glasses or eye shields while  
operating your tractor or performing any adjustments or  
repairs.We recommend a wide vision safety mask over  
eye glasses, or standard safety glasses.  
Be aware of the mower discharge direction and do not  
point it at anyone. Always stand clear of discharge  
area.  
Protect eyes, face and head from objects that may be  
thrown from unit. Wear appropriate hearing protection.  
DO NOT operate at too fast a rate.  
NEVER wear open sandals or canvas shoes during  
operation. Wear adequate safety gear, protective  
gloves and footwear.  
DO NOT change engine governor settings or  
over-speed engine. Slow down before turning.  
Disengage PTO when attachment is not in use.  
ALWAYS turn off power to attachment when  
transporting, crossing driveways, etc.  
Avoid slippery surfaces. Always be sure of your footing.  
Keep all nonskid surfaces clean. Replace safety treads  
if worn, damaged, or missing.  
Stop engine before removing grass catcher or  
unclogging chute.  
Always keep hands and feet away from rotating parts.  
Do not step on mower deck when mounting, operating  
or dismounting tractor.  
Do not operate mower unless bagger is attached or  
guards are in operating position.  
NEVER operate the machine after or during the use of  
medication, alcohol or drugs. Safe operation requires  
your complete and unimpaired attention at all times.  
If you cannot back up a slope or you feel uneasy on it,  
do not mow it.  
Mow up and down slopes, not across them.  
NEVER allow anyone to operate this unit when their  
alertness or coordination is impaired.  
Use slow speed on any slope. Choose a low gear so  
that you will not have to stop or shift while on the slope.  
Do not touch parts which are hot from operation.  
ALWAYS allow parts to cool.  
Follow the manufacturers recommendations for wheel  
weights or counterweights to improve stability.  
Always keep hands away from all pinch points.  
Use extra care with grass catchers or other  
attachments. These can change the stability of the  
machine. Use only approved hitch points.  
NEVER place your hands or any part of your body or  
clothing inside or near any moving part while unit is  
running.  
Keep all movements on the slope slow and gradual. Do  
not make sudden changes in speed or direction.  
DO NOT wear loose clothing or jewelry. Tie back hair  
that may get caught in rotating parts.  
Avoid starting or stopping on the slope. If tires lose  
traction, disengage the blades and proceed slowly  
straight down the slope.  
Always stand clear of discharge area.  
Keep people away from unit while operating.  
Shut off engine, remove key, read manual before you  
unplug, adjust or repair unit.  
Do not mow near dropoffs, ditches, or embankments.  
The mower could suddenly turn over if a wheel is over  
the edge of a cliff or ditch, or if an edge caves in.  
DO NOT run engine in an enclosed area. Always  
provide good ventilation. Fumes from engine exhaust  
can cause injury or death.  
Do not mow on wet grass. Reduced traction could  
cause sliding.  
Data indicates that operators, age 60 and above, are  
involved in a larger percentage of riding mower related  
injuries.These operators should evaluate their ability to  
operate the riding mower safely enough to protect  
themselves and others from serious injury.  
Do not try to stabilize the machine by putting your foot  
on the ground.  
Do not use grass catcher on steep slopes.  
Do not operate on slopes over 10˚ maximum.  
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Keep children out of the mowing area and under the  
watchful care of another responsible adult.  
Stop and inspect equipment if you strike an object.  
Repair, if necessary, before restarting.  
Be alert and turn off machine if children enter the area.  
Never make adjustments or repairs with the engine  
running.  
Before and when backing up, look behind and down for  
small children.  
ALWAYS lower attachment when unit is parked or  
stored.  
Never carry children, even if mower is disengaged.  
They may fall off and be seriously injured or interfere  
with safe machine operation.  
Grass catcher components are subject to wear,  
damage, and deterioration, which could expose moving  
parts or allow objects to be thrown. Frequently check  
components and replace with manufacturers  
recommended parts, when necessary.  
Never allow children to operate or play on or near the  
unit.  
Always keep batteries out of reach of children.  
Mower blades are sharp and can cut you. Wrap the  
blade(s) or wear gloves, and use extra caution when  
servicing them.  
HYDRAYLIC FLUID WILL CAUSE SEVERE BURNS.  
Fluid in the hydraulic system can penetrate the skin  
and cause death or serious injury.  
IMPORTANT: On multi-blade mowers, rotation of one  
blade will cause all blades to rotate.  
Transport  
NEVER push or pull (tow) unit with another vehicle.  
Transmission damage will occur.  
Check brake operation frequently. Adjust and service  
as required.  
Use extra care when loading or unloading the machine  
into a trailer or truck.  
AVOID ELECTRIC SHOCK. Do not reverse battery  
connections.  
Secure unit chassis to transport vehicle. Never secure  
by linkages which could become damaged.  
EXPLOSIVE GASES from battery can cause death or  
serious injury. ALWAYS keep open ames, sparks, or  
smoking materials away from batteries.  
DO NOT transport machine while engine is running.  
DO NOT transport with attachment in the lowered  
(operating) position.  
POISONOUS BATTERY FLUID contains sulfuric acid  
and its contact with skin, eyes, or clothing can cause  
severe chemical burns. ALWAYS wear safety glasses  
and protective gear near battery.  
Service  
Before making any inspections, repairs, adjustments,  
etc. disengage PTO, stop unit and engine, remove key,  
and allow moving parts to stop.  
DO NOT tip battery beyond a 45° angle in any  
direction.  
ALWAYS maintain unit in safe operating condition.  
Damaged or worn mufer can cause re or explosion.  
ALWAYS block wheels and know all jack stands are  
strong and secure and will hold weight of unit during  
maintenance.  
Spark Arrester  
Use extra care in handling gasoline and other fuels.  
They are ammable and vapors are explosive.  
This product is equipped with an internal combustion  
engine. DO NOT use on or near any unimproved, forest  
covered or brush covered land unless the exhaust  
system is equipped with a spark arrester meeting  
applicable local, state or federal laws. A spark arrester,  
if used, must be maintained in effective working order  
by the operator.  
Use only an approved container.  
Never remove gas cap or add fuel with the engine  
running. Allow engine to cool before refueling. Do  
not smoke.  
Never refuel the machine indoors.  
Never store the machine or fuel container inside a  
building where there is an open ame, such as a  
water heater.  
Keep nuts and bolts tight, especially blade attachment  
bolts, and keep equipment in good condition.  
Never modify, alter or permit anyone to modify or alter  
the unit or its components.  
Never tamper with safety devices. Check their proper  
operation regularly. (See Operator Presence System in  
Operation)  
Keep machine free of grass, leaves, or other debris.  
Clean up oil or fuel spills.  
Allow machine to cool before storing.  
9
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ASSEMBLY  
To ensure safe and proper operation, all parts and  
3. Check Engine Oil  
hardware must be tightened securely. Use the correct  
tools to ensure proper tightness.  
This tractor has been lled with oil at the factory.  
Verify engine oil level prior to starting engine and  
add oil if required.  
TO REMOVE TRACTOR FROM SKID  
4. Adjust Seat  
1. Remove all accessible loose parts from shipping  
carton.  
Adjust seat to a comfortable position and tighten  
securely. See Service and Adjustments.  
2. Remove top and sides of crate.  
5. Check Tires  
3. Remove shrink wrap and packing material.  
4. Cut any banding material holding tractor to skid.  
Make sure all tires are properly inated. (For  
shipping purposes, the tires were overinated at  
the factory. See Specifications for proper air  
pressure.)  
5. 42" Deck - Raise mower deck attachment lift lever  
to its highest position.  
48" Deck - Slide mower deck out from under  
tractor and set aside.  
6. Check Belts  
Check mower and drive belts. Be sure they are  
routed properly around pulleys and inside all belt  
ngers.  
6. Release parking brake by pushing lever down.  
7. Open transmission dump valves by lifting the  
dump valve knob and pulling rearward until the  
expanded section of the rod comes through the  
hole in the trailer hitch. Push the rod back down  
to lock it into position.  
7. Check Wiring  
Make sure that all connections are secure and  
wires are properly clamped.  
While learning how to use your tractor, pay extra  
attention to the following important items:  
Engine oil is at proper level.  
Fuel tank is lled with fresh, clean, regular  
unleaded gasoline.  
Become familiar with all controls their location  
and function. Operate them before you start the  
engine.  
Dump Valve Rod  
Trailer Hitch  
OE0301  
8. Carefully push the tractor from the skid to a level  
area.  
9. 42" Deck - Remove banding holding discharge  
chute up against tractor.  
48" Deck - Install deck per the instructions in  
Service and Adjustments.  
ASSEMBLY  
1. Check Levelness of Deck  
Be sure mower deck is properly leveled  
side-to-side/front-to-rear for best cutting results.  
(Tires must be properly inated for leveling. See  
Specifications.) See Deck Leveling in Service and  
Adjustments.  
2. Check Battery  
If the battery is put into service after the month  
and year indicated on the battery, it must be  
charged before use. With a 12 volt battery  
charger, charge the battery for a minimum of one  
hour and no more than two hours at a rate of 6 to  
10 amps.  
Remove battery from unit before servicing. See  
Maintenance for specic information.  
10  
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OPERATION  
Throttle Control (2048 only)  
CONTROLS AND FEATURES  
Always operate engine at full throttle.  
CAUTION: The operation of any tractor can  
result in foreign objects thrown into the eyes,  
which can cause severe eye damage. Always  
wear safety glasses or eye shields while  
operating your tractor or performing any  
adjustments or repairs. We recommend a  
wide vision safety mask over eye glasses, or  
standard safety glasses.  
Moving the lever to the "FAST" position  
increases the engine speed.  
FAST  
Moving the lever to the "SLOW" position  
decreases the engine speed.  
Operating engine at less than full  
throttle reduces the battery charging  
rate.  
SLOW  
OE0340  
Full throttle offers the best bagging  
and mower performance.  
Operator Presence System  
Your tractor is equipped with an operator presence  
switch. When engine is running, any attempt by the  
operator to leave the seat, without rst disengaging  
attachment and placing the Steering Control Levers in  
neutral, will shut off the engine.  
Throttle / Choke Control (1742 only)  
Always operate engine at full throttle.  
Place the lever in the "Choke" position to  
start a cold engine.  
The engine must shut off if the operator leaves the seat  
while the Travel-Speed Control Levers are in any  
position other than the "NEUTRAL LOCK" position, or  
while the PTO Switch is in the "ON" position.  
Move the lever to the "FAST" position to  
increase the engine speed.  
Move the lever to the "SLOW" position to  
decrease the engine speed.  
FAST  
Do not operate tractor unless operator presence  
system functions as described. Contact your Gravely  
Dealer for repair.  
Operating engine at less than full  
throttle reduces the battery charging  
rate.  
SLOW  
OE0340  
Full throttle offers the best bagging  
and mower performance.  
Ignition Switch  
The ignition switch is operated with a  
removable key. To start the unit, the  
switch is turned clockwise from the  
"OFF" position to the "START"  
position. The key will spring back to  
the "RUN" position.  
OFF  
RUN  
Power Take-Off (PTO) Switch  
The Power Take Off Switch is used to engage and  
disengage the attachment.  
START  
OF1210  
When the PTO Switch is pulled out, it is in  
the "ON" position and the attachment is  
engaged.  
"OFF" Position: Ignition system is shut down.  
"RUN" Position: All controls are operable.  
When the PTO Switch is pushed in, it is in  
the "OFF" position and the attachment is  
disengaged.  
"START" Position: Starter turns over the engine.  
OE0261  
To stop the engine, turn the key to the "OFF" position.  
Choke Control (2048 only)  
Travel/Speed Control Levers  
When starting a cold engine:  
WARNING: This tractor is steered and  
Pull the choke control out to engage choke.  
stopped through the rear drive tires which are  
controlled by the Steering Control Levers. Any  
loss of tire traction will also result in loss of  
braking and steering control. Care must be  
exercised not to use unit on a slope greater  
than recommended. Loss of tire traction, and  
loss of steering and brake control could result,  
leading to serious injury.  
Push the choke control in after engine has warmed up  
for about 10 seconds.  
Parking Brake  
To engage the Parking Brake, lift up on lever.  
To disengage the Parking Brake, push lever down.  
If one or both of the wheels do not turn easily, check  
the brake to assure it is disengaged.  
Parking Brake Interlock  
Engine will shut off if control levers are taken out of  
neutral lock with brake engaged.  
11  
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NOTE: Aggressive turning can scuff or damage lawns.  
ALWAYS keep both wheels rotating when making  
sharp turns. DO NOT make turns with inside wheel  
completely stopped. To obtain minimum turning radius,  
slowly reverse inside wheel while moving outside wheel  
slowly forward.  
Neutral Lock  
To start, lock unit in neutral by pushing  
both Travel-Steering Control Levers  
outward to each side from centered  
(neutral) position.  
OE0060  
Neutral Lock Position  
Attachment Lift Lever  
The position of the lift lever determines the cutting  
height.  
To adjust the attachment height:  
1. Squeeze locking lever into handle.  
2. Raise or lower attachment handle to  
desired height.  
OT0620  
3. Release locking lever to set position.  
Maximum cutting height is 4-3/8 inches; lowest cutting  
height is 1-3/8 inches. Intermediate positions allow  
cutting heights between these values.  
The heights are measured from the ground to the blade  
tip with the engine NOT running. These heights may  
vary depending upon the soil conditions, height of  
grass and types of grass being mowed.  
-A-  
OE0161  
NOTE: On the 42" Deck, the Anti-scalp roller height  
must be adjusted to correspond with the attachment  
height or so the anti-scalp rollers are not lower than the  
desired cutting height. See Adjustments.  
Straight Forward  
Push the Travel-Steering Control Levers  
SLOWLY forward the same distance from  
the centered (neutral) position.The further  
you move the levers, the faster the unit will  
travel forward. (Travel-Steering Control  
Levers have quick response timing.)  
For best cutting performance, grass over 6 inches  
in height should be mowed twice. Make the rst  
cut relatively high (4 inches); the second to  
desired height.  
OE0200  
Straight Backward  
WARNING: AVOID injury from stored energy  
in lift assist spring. DO NOT unlock  
attachment lift lever with mower deck  
removed. ALWAYS engage Attachment Lift  
Lever Lock when removing mower deck.  
Pull the Travel-Steering Control Levers  
back the same distance from the centered  
(neutral) position. The further you move  
the levers, the faster the unit will travel in  
reverse.  
OE0210  
Turns  
Move one Travel-Steering Control Lever forward and  
the other backward. Pushing the lever forward from the  
centered position moves the unit forward on that side;  
pulling the lever back from the centered position moves  
the unit backward on that side.  
1. Left Lever further forward than Right  
Lever: Turns the unit to the Right.  
OE0230  
2. Right Lever further forward than Left  
Lever: Turns the unit to the Left.  
OE0220  
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Attachment Lift Lever Lock  
WARNING: AVOID injury from stored energy  
PRESTART  
1. Check Engine Oil Level  
in lift assist spring. DO NOT unlock  
attachment lift lever with mower deck  
removed. ALWAYS engage Attachment Lift  
Lever Lock when removing mower deck. See  
Service and Adjustments.  
The engine in your tractor has been shipped from the  
factory, already lled with summer weight oil. Check  
engine oil with tractor on level ground.  
ALWAYS engage the  
attachment Lift Lever Lock  
when removing or  
OE0520  
servicing the mower deck.  
Lift lever can spring up  
quickly if released while  
1. Remove oil ll cap/dipstick and wipe clean.  
2. Reinsert the dipstick and rest the oil ll cap on the  
tube. Tighten the cap lightly.  
OE0770  
mower deck is removed.  
3. Wait a few seconds, remove and read oil level. If  
necessary, add oil until "FULL" mark on dipstick is  
reached. Do not overll.  
Before removing the  
mower deck, lower the  
attachment lift lever to  
position 1, then latch  
1
5
4
3
2
For cold weather operation you should change oil for  
easier starting (See "Oil Viscosity Chart" in Engine  
Manual). To change oil, see Engine Manual.  
and lock the lock pin.  
1
2
OE0780  
2. Check Fuel Level  
The fuel level is shown through a window in the control  
panel next to the parking brake.  
To properly latch and lock  
the lock pin.  
1
Pull the pin out of the  
latched unlocked position.  
WARNING: Fuel is highly ammable and its  
vapors are explosive. Handle with care.  
2
Rotate the lock pin  
downward 90°.  
NO smoking, NO sparks, NO ames.  
3
OE0790  
Push lock pin in to  
locked position.  
Refer to Engine Manual for proper fuel.  
To add fuel to the fuel tank:  
1. ALWAYS place unit in open or well ventilated  
area.  
Transmission Dump Valves  
Opening the Dump Valves allows the unit to be pushed  
by hand. Dump Valves must be closed to drive unit.  
2. Stop engine and allow to cool for two minutes.  
3. Clean the fuel cap and the area around the fuel  
cap to prevent dirt from entering the fuel tank.  
Fuel Cap  
Dump Valve Rod  
Fuel Level Window  
OE0301  
Trailer Hitch  
To Open the Dump Valves: Lift up on the Dump  
Valve Rod Knob and pull rearward until the  
expanded section of the rod comes through the  
hole in the trailer hitch. Push the rod back down  
to lock it in position.  
OE0690  
4. Remove the cap from the fuel tank.  
5. Fill the fuel tank to not less than 1/2 inch of  
bottom of tank ller neck. Use care; do not spill  
fuel.  
To Close the Dump Valves: Lift up on the Dump  
Valve Rod and push it forward.  
6. Replace the cap on the fuel tank and tighten.  
7. ALWAYS clean up any spilled fuel before starting  
the engine.  
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2. Put PTO in the "OFF" position.  
STARTING THE ENGINE  
3. Move the Throttle Lever to "SLOW" position and  
let unit idle for 30 seconds.  
NOTE: Before starting, read warm and cold starting  
procedures below.  
4. Turn Ignition Key to the "OFF" position.  
5. Engage the Parking Brake.  
1. The operator must be seated.  
2. Travel-Steering Control levers must be in the  
"NEUTRAL-LOCK" position.  
TO OPERATE MOWER  
3. The PTO Switch must be in the "OFF" position.  
Your tractor is equipped with an operator presence  
sensing switch. Any attempt by the operator to leave  
the seat with the engine running, the PTO Switch  
engaged, or a Steering Control Lever out of the Neutral  
Lock Position will shut off the engine.  
4. For 2048 - If the engine is cold, apply choke. For  
1742 - Place Throttle/Choke control in Choke  
position. See Engine Manual for detailed  
instructions.  
5. Set throttle to proper starting position (2048 only).  
See Engine Manual.  
CAUTION: Do not operate the mower without  
either the entire grass catcher on mowers so  
equipped, or the discharge guard in place.  
6. Turn the ignition key clockwise to the "START"  
position. Release the key when the engine starts.  
IMPORTANT: Do not run starter continuously for more  
than fteen seconds. If the engine does not start after  
several attempts, move throttle control to "FAST"  
position, wait a few minutes and try again. If engine still  
does not start, move the throttle control back to the  
choke position and retry. If engine still does not start,  
refer to Troubleshooting.  
Speed  
WARNING: DO NOT operate at too fast a  
rate. Sudden forward or backward movement  
in Travel-Steering Control Lever(s) at fast  
speeds can cause accidents resulting in injury  
or death.  
7. After the engine starts, allow it to run for about 10  
seconds with choke engaged. Disengage choke  
slowly.  
Move one or both Travel-Steering Control Lever(s)  
forward or backward SLOWLY until you learn how to  
operate the unit properly. The further you move the  
levers, the faster the unit will travel.  
8. Set throttle to "Fast" position.  
9. Wait until the engine is running smoothly before  
operating unit.  
NOTE: This unit is designed to be highly maneuverable  
and responds quickly to movement of the  
Travel-Steering Control Levers. Practice operation of  
the controls in a at open area until you are  
comfortable with their operation. ALWAYS start and  
backup slowly, and make turns with caution.  
Warm Weather Starting (50˚F and above)  
1. After engine starts, let it run with choke engaged  
for about 10 seconds.  
2. Disengage the choke and move the throttle slowly  
to the fast position (2048). Move the  
To mow with the unit:  
Throttle/Choke control to the fast position (1742).  
1. With mower engine OFF, adjust deck to desired  
height of cut.  
3. The attachments and ground drive should now  
operate. If they do not, allow engine to warm up  
for one minute.  
For the 42" deck, be sure to adjust the height of  
the anti-scalp rollers to the correct height. See  
Adjustments.  
Cold Weather Starting (50˚F and below)  
1. When the engine starts, allow engine to run with  
the throttle in the choke position until the engine  
runs roughly.  
2. Start the mower engine.  
3. Move Throttle Lever to about half speed.  
4. Pull PTO Switch to the "ON" position to engage  
the mower.  
2. Move the throttle control to the fast position  
(2048). Move the Throttle/Choke control to the  
fast position (1742). This may require an engine  
warm-up period from several seconds to several  
minutes, depending on the temperature.  
5. Move the Throttle Lever forward to full engine  
speed.  
6. Move Travel-Steering Control Levers forward to  
mow.  
3. Do not engage attachment during the warm-up  
period.  
IMPORTANT: NEVER engage the PTO if the mower is  
plugged with grass or other material. This may cause  
damage to the PTO belt.  
STOPPING THE ENGINE  
1. With both Travel-Steering Control Levers pulled  
back to centered (neutral) position, bring unit to a  
complete stop on level ground.  
7. TO STOP MOWER BLADES disengage PTO  
Switch.  
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Raise attachment lift to highest position with  
attachment lift control.  
TO OPERATE ON HILLS  
CAUTION: Do not drive up or down hills with  
slopes greater than 10˚ and do not drive  
When pushing your tractor, be sure the  
transmission dump valves are OPEN.  
across any slope.  
Do not push tractor at more than ve (5) mph.  
To protect engine cover when transporting your  
tractor on a truck or a trailer, be sure engine cover  
is closed and secured to tractor. Use an  
appropriate means of tying hood to tractor (rope,  
cord, etc.).  
Use a slow speed before starting up or down hills.  
Avoid stopping or changing speed on hills.  
If slowing is necessary, move Travel-Steering  
Control Levers to slower position.  
If stopping is absolutely necessary; use  
Travel-Steering Control Levers to hold machine  
on hill as it may roll down the hill in neutral.  
FOR BEST MOWING RESULTS  
Mower should be properly leveled for best  
mowing performance. See Deck Leveling in  
Service and Adjustments.  
Do not park on hills.  
To restart movement, slowly move  
Steering-Control Levers forward.  
The left side of mower should be used for  
trimming.  
STOPPING  
Drive so that clippings are discharged onto the  
area that has been cut. Keep the cut area to the  
right of the machine. This will result in a more  
even distribution of clippings and more uniform  
cut.  
Brake Operation  
This tractor uses hydrostatic braking, through the  
transmission, to slow the tractor.  
Stopping the Ground Drive  
Bring Steering-Control Levers back toward  
neutral to slow the tractor.  
To stop the tractor drive, move the  
Steering-Control Levers into the neutral position.  
Stopping the Engine  
When mowing large areas, start by turning to the  
right so the clippings will discharge away from  
shrubs, fences, driveways, etc. After one or two  
rounds, mow in the opposite direction making left  
hand turns until nished.  
Move throttle control to slow position and allow  
engine to idle for 30 seconds.  
NOTE: Failure to move throttle control to slow position  
and allowing engine to idle before stopping may cause  
engine to "Backre".  
If grass is extremely tall, it should be mowed  
twice to reduce load and possible re hazard from  
dried clippings. Make rst cut relatively high; the  
second to the desired height.  
Turn ignition key to "OFF" position and remove  
key. Always remove key when leaving tractor to  
prevent unauthorized use.  
IMPORTANT: Leaving the ignition in any other position  
than "OFF" will cause the battery to be discharged.  
Do not mow when grass is wet. Wet grass will  
clog mower and leave undesirable clumps. Allow  
grass to dry before mowing.  
NOTE: Under conditions when tractor is standing idle  
with the engine running, hot engine exhaust gases may  
cause "browning" of grass. To eliminate this possibility,  
always stop engine when stopping tractor on grass  
areas.  
Always operate engine at full throttle when  
mowing to assure better mowing performance  
and proper discharge of material. Regulate  
ground speed by using the Steering Control  
Levers.  
CAUTION: Always stop tractor completely, as  
described above, before leaving the operators  
position for any reason.  
When operating attachments, select a ground  
speed that will suit the terrain and give best  
performance of the attachment being used.  
TO TRANSPORT THE MOWER  
IMPORTANT: Never push or pull (tow) the unit with  
another vehicle. Use a truck or trailer when  
transporting or transmission damage can occur.  
Disengage PTO.  
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MULCHING OPERATION (OPTIONAL)  
The special mulching blades and bafes will allow the  
grass clippings to be cut many times to reduce their  
size. As the grass falls onto the lawn,it disperses into  
the grass and will not be noticed. Also, the mulched  
grass biodegrades quickly and provides nutrients for  
the lawn.  
Always operate engine at full throttle when  
mulching to assure the best cutting action of the  
blades.  
For best performance, set the height of your  
mower deck so that no more than 1/3 of the total  
grass length is removed at any one time.  
Grass should be cut when it is dry, not when it is  
wet from dew, rain or from watering. Wet grass  
tends to pack inside mower pan and will not  
disperse evenly.  
If grass does not disperse evenly, it is possible  
that too much grass is being removed per cutting,  
grass is too wet or travel speed is too fast.  
This mulcher is not recommended for newly  
seeded lawns. A new lawn has much softer  
blades of grass and a higher moisture content.  
New lawns should be cut with conventional side  
discharge or bagging for the rst few mowings.  
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MAINTENANCE  
MAINTENANCE SCHEDULE  
Check Operator Presence  
Systems  
Check for Loose Fasteners  
Check Parking Brake Interlock  
Check Parking Brake  
Check Tires  
Check Blades  
3
Check Battery  
Clean Battery  
Check Belts  
Clean Transaxle  
Lubrication  
Cleaning  
Check Engine Oil Level  
Change Engine Oil and Filter  
1,2  
Check Air Filter  
Service Precleaner  
2
Replace Paper Element  
2
Inspect Mufer/Spark Arrestor  
Replace Spark Plugs  
Replace In-Line Fuel Filter  
Clean Air Screen  
2
Clean Engine Cooling Fins  
2
1 - Change more often when operating under a heavy load or in high ambient temperatures.  
2 - Service more often when operating in dirty or dusty conditions.  
3 - Replace blades more often when mowing in sandy soil.  
GENERAL RECOMMENDATIONS  
BEFORE EACH USE  
Always observe safety rules when performing any  
maintenance.  
Check engine oil level.  
Check tire pressure.  
The warranty on this tractor does not cover items that  
have been subjected to operator abuse or negligence.  
To receive full value from the warranty, operator must  
maintain tractor as instructed in this manual.  
Check operator presence and parking brake  
interlock systems for proper operation.  
Check for loose fasteners.  
Check seat adjustments to ensure all controls can  
be reached.  
Some adjustments need to be made periodically to  
properly maintain your tractor. All adjustments in  
Service and Adjustments should be checked at least  
once each season.  
Test operation of all controls.  
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1. Shut off the engine and unit. Remove the ignition  
key. Remove the ignition wire(s) from the spark  
plug(s) to prevent accidental start-up.  
CHECK OPERATOR PRESENCE SYSTEM  
The engine should not start unless the PTO Switch is  
disengaged, and the Steering-Control Levers are in  
neutral lock position.  
2. Raise mower to highest position to allow access  
to blades.  
When the engine is running any attempt by the  
operator to leave the seat without rst moving the  
Steering-Control Levers to neutral lock position  
should shut off the engine.  
When the engine is running and the PTO Switch  
is engaged, any attempt by the operator to leave  
the seat should shut off the engine. The  
attachment clutch should never operate unless  
the operator is in the seat.  
Flat Washer  
Do not operate tractor unless operator presence  
system functions as described. Contact your Gravely  
dealer for repair.  
Blade  
Lock Nut  
OE0510  
CHECK FOR LOOSE FASTENERS  
3. Remove the locknuts, at washers, and blades  
Be certain that all hardware is tightened to the proper  
torque. Pay special attention to the blades, guards and  
safety shields.  
from the spindle shafts.  
Blade Installation  
1. Install the blades, at washers, and locknuts in  
CHECK PARKING BRAKE INTERLOCK  
Any attempt to move the Steering-Control Levers out of  
neutral with the parking brake engaged should shut off  
the engine.  
reverse order of removal.  
2. Tighten the lock nut(s) to a torque of 60 ft-lbs  
(82 Nm).  
3. Put the ignition wire(s) back on the spark plug(s).  
CHECK PARKING BRAKE  
If unit rolls with parking brake engaged, parking brake  
must be repaired. Contact your Gravely Dealer.  
Sharpening Mower Blades  
NOTE: We do not recommend sharpening blades, but  
if you do, be sure the blade is balanced.  
An unbalanced blade will cause excessive vibration  
and eventual damage to mower and engine.  
CHECK TIRES  
Maintain proper air pressure in all tires. See  
Specifications.  
1. The blade can be sharpened with a le or on a  
grinding wheel. Do not attempt to sharpen while  
on the mower.  
Keep tires free of gasoline, oil, or insect control  
chemicals which can harm rubber.  
2. Sharpen both ends of blade at original angle,  
removing equal amounts of material from each  
end to maintain proper blade balance. DO NOT  
grind around corner at tips of blade. If cutting  
edge of blade cannot be sharpened in a straight  
line to within 1/8 inch of the end, replace blade  
with Gravely replacement blade only.  
Avoid stumps, stones, deep ruts, sharp objects  
and other hazards that may cause tire damage.  
NOTE: To seal tire punctures and prevent at tires due  
to slow leaks, tire sealant may be purchased from your  
Dealer. Tire sealant also prevents tire dry rot and  
corrosion.  
3. To check blade balance, use a steel bolt or pin.  
CHECK BLADES  
For best results mower blades must be kept sharp.  
Replace bent, worn or damaged blades.  
Blade Removal  
Blade  
CAUTION: Moving Parts and Sharp Blades  
can cut or amputate body parts. Always use  
sturdy gloves or padding to protect hands  
when working with mower blades.  
Bolt or Pin  
OE0500  
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4. Slide blade onto an unthreaded portion of the  
steel bolt or pin and hold the bolt or pin parallel  
with the ground. If blade is balanced, it should  
remain in a horizontal position. If either end of the  
blade moves downward, sharpen the heavy end  
until the blade is balanced.  
Battery Electrolyte First Aid  
Follow First Aid directions for any contact with battery  
fluid.  
External Contact: Flush with water.  
Contact with Eyes: Flush with water for at least  
15 minutes and get medical attention  
immediately!  
CHECK BATTERY  
Internal Contact: If swallowed, drink large  
quantities of water. Follow with Milk of Magnesia,  
beaten egg or vegetable oil.  
Your tractor has a battery charging system which is  
sufficient for normal use. However, periodic charging of  
the battery with an automotive charger will extend its  
life.  
Get medical attention immediately!  
Keep battery and terminals clean.  
Keep battery bolts tight.  
IMPORTANT: In case of internal contact, DO NOT  
induce vomiting.  
Keep small vent holes open.  
Recharge at 6-10 amperes for 1 hour.  
CLEAN BATTERY  
Corrosion and dirt on the battery and terminals can  
cause the battery to “leak” power.  
WARNING: ELECTRICAL SHOCK may result  
in injury and/or damage to unit.  
Remove battery. (See Battery Removal and  
Installation)  
DO NOT allow objects to come into contact  
with both terminals at the same time.  
Rinse the battery with plain water and dry.  
Clean terminals and battery cable ends with wire  
brush until bright.  
Coat terminals with grease or petroleum jelly.  
Reinstall battery.  
WARNING: REVERSE CONNECTIONS may  
result in sparks which can cause serious  
injury. ALWAYS connect positive (+) lead of  
charger to positive (+) terminal, and negative  
(–) lead to negative (–) terminal.  
Battery Removal and Installation  
Remove battery before service.  
ALWAYS connect positive (+) cable FIRST,  
and negative (–) cable SECOND.  
1
2
WARNING: EXPLOSIVE GASES from  
battery can cause death or serious injury.  
ALWAYS keep open flames, sparks, or  
smoking materials away from batteries.  
3
POISONOUS BATTERY FLUID contains  
sulfuric acid and its contact with skin, eyes, or  
clothing can cause severe chemical burns.  
ALWAYS wear safety glasses and protective  
gear near battery.  
4
OE0710  
DO NOT TIP any battery beyond a 30˚ angle  
in any direction.  
1. Screws  
2. Lift lever access  
plate  
3. Parking brake  
knob  
4. Front panel  
ALWAYS keep batteries out of reach of  
children.  
To remove the battery from the unit:  
WARNING: Battery posts, terminals and  
related accessories contain lead and lead  
compounds, chemicals known to the State of  
California to cause cancer and reproductive  
harm. Wash hands after handling.  
1. Remove the two self-tapping screws at the top of  
the front panel.  
2. Remove the two hex screws from the Lift Lever  
access plate and remove the plate.  
3. Unscrew the knob from the Parking Brake Lever.  
4. Lift the front panel off the unit by lifting it up and  
out of slots in frame, clearing the Lift Lever.  
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Front  
Negative ()  
Terminal  
Mower Drive  
Idler  
Positive (+)  
Terminal  
Battery Rod and  
Wing Nut  
OE0151  
5. Remove wing nut from the Battery Rod and  
remove the rod.  
Clutch Shaft  
Idler  
6. Disconnect the negative () cable rst.  
Transaxle Idler  
7. Disconnect the positive cable (+) second.  
8. Lift the battery out of the unit and place battery on  
a bench or other well ventilated area where an  
acid spill will not create damage.  
Back  
9. When service is nished, reinstall battery into unit  
and connect positive (+) cable rst, then negative  
() cable.  
OE0330  
10. Reinstall front panel, making sure tabs t  
securely into slots in frame. Secure with  
hardware.  
11. Reinstall the Lift Lever Access plate and the knob  
on the Parking Brake Lever.  
CHECK BELTS  
Check belts for deterioration or wear and replace  
if necessary. Replace belts to accommodate belt  
stretch and wear in the traction drive or mower  
drive. Refer to Service and Adjustments for  
procedures.  
OE0700  
CLEANING  
Clean engine, battery, seat, deck, etc. of all dirt  
and debris with a brush or cloth. Do not use  
solvents, harsh cleaners or abrasives.  
CLEAN TRANSAXLE  
Remove packed grass and debris from under  
mower deck.  
Keep transaxles free from buildup of dirt and  
chaff which can restrict cooling.  
Keep nished surfaces and wheels free of all  
gasoline, oil, etc.  
LUBRICATION  
Protect painted surfaces with automotive type  
wax. Lightly coat unpainted surfaces with spray  
lubricant and wipe off excess with soft cloth.  
Apply Stens Hi-Temp Grease or equivalent to the  
lube ttings on idler pivots.  
Grease the ttings on the front wheel spindles,  
the idler arms, and the steering controls every 50  
hours of operation.  
IMPORTANT: Never spray unit with water or store unit  
outdoors. Water can seep into sealed bearings, which  
are sealed against dirt and debris only, causing  
reduced component life.  
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Check the air cleaner daily or before starting engine.  
Check for buildup of dirt and debris around the air  
cleaner system. Keep this area clean. Also check for  
loose or damaged components. Replace all bent or  
damaged air cleaner components.  
ENGINE  
To access engine:  
1. Unhook Engine Cover latch.  
2. Lift rear of cover and slide out. Set cover aside.  
3. To replace cover: Slide front of cover into slot.  
Your engine will not run properly with a dirty air lter.  
4. Insert the back edge of cover into its support  
bracket.  
See Engine Manual for detailed instructions on  
changing the air lter.  
5. Hook Engine Cover latch securely.  
IMPORTANT: Operating the engine with loose or  
damaged air cleaner components could allow unltered  
air into the engine causing premature wear and engine  
failure.  
Fuel Cap  
Engine  
Cover  
Engine Cover  
Latch  
INSPECT MUFFLER/SPARK ARRESTOR  
Inspect mufer and (if equipped) spark arrester.  
Replace mufer if corroded, as it could create a re  
hazard and/or damage.  
REPLACE SPARK PLUGS  
Spark plug type and gap setting are shown in  
Specifications. See Engine Manual for detailed  
instructions.  
OE0800  
CHECK ENGINE OIL LEVEL  
REPLACE IN-LINE FUEL FILTER  
Check the crankcase oil level before starting the engine  
and after each eight (8) hours of operation. Tighten oil  
ll cap/dipstick securely each time you check the oil  
level. See Engine Manual for detailed instructions.  
The fuel lter should be replaced once each season. If  
fuel lter becomes clogged, obstructing fuel ow to  
carburetor, replacement is required. See Engine  
Manual for detailed instructions.  
CLEAN AIR SCREEN  
Air screen must be kept free of dirt and chaff to prevent  
engine damage from overheating. Clean with a brush  
or cloth to remove dirt and chaff. Do not clean with a  
forceful spray of water because water could  
contaminate fuel system. See Engine Manual for  
detailed instructions.  
"FULL" Mark  
Operating  
Range  
OE0380  
IMPORTANT: To prevent extensive engine wear or  
damage, always maintain the proper oil level. Never  
operate the engine with the oil level below the "L" mark  
or over the "F" mark on the dipstick.  
CLEAN ENGINE COOLING FINS  
To ensure proper cooling, make sure the grass screen,  
cooling ns and other external surfaces of the engine  
are kept clean at all times. See Engine Manual for  
detailed instructions.  
CHANGE ENGINE OIL AND FILTER  
Only use high quality detergent oil rated with API  
service classication SF or SG. Select the oils  
SAE viscosity grade according to your expected  
environmental temperature.  
IMPORTANT: Operating the engine with a blocked  
grass screen, dirty or plugged cooling ns, and/or  
engine shroud removed will cause engine damage due  
to overheating.  
See Engine Manual for detailed instructions.  
CHECK AIR FILTER  
This engine is equipped with a replaceable, high  
density paper air cleaner element and an oiled, foam  
precleaner.  
21  
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SERVICE AND ADJUSTMENTS  
10. Slide mower from under tractor. Mower is easier  
to remove from the right side of the tractor.  
CAUTION: Before performing any service or  
adjustments:  
5
4
6
Turn PTO switch "OFF".  
3
2
Park mower on a hard, at, level surface.  
Place steering control levers in neutral lock  
(fully outward) position.  
1
Set parking brake.  
Turn ignition switch "OFF" and remove key.  
Wait for blades and all moving parts to stop.  
Disconnect spark plug wire(s) from spark  
plug(s) and place wire(s) away from plug.  
OE0170  
1. Front Pin  
2. Front Lift Arm  
3. Rear Hanger  
4. Height Adjuster  
5. Lift Lever Hook  
6. Hair Pin  
TO REMOVE 48" MOWER DECK  
1. Turn off engine, engage parking brake and allow  
hot parts to cool.  
TO INSTALL 48" MOWER DECK  
2. Place center deck lift handle in lowest (1)  
position.  
1. The center deck lift handle should be in the  
lowest (1) position with the Attachment Lift Lock  
engaged.  
WARNING: AVOID injury from stored energy  
in lift assist spring. DO NOT unlock  
attachment lift lever with mower deck  
removed. ALWAYS engage Attachment Lift  
Lever Lock when removing mower deck. See  
Operation.  
WARNING: AVOID injury from stored energy  
in lift assist spring. DO NOT unlock  
attachment lift lever with mower deck  
removed. ALWAYS engage Attachment Lift  
Lever Lock when removing mower deck. See  
Operation.  
3. Engage Attachment Lift Lock. Pull handle out and  
rotate down 90°. Handle will spring into locked  
position.  
2. Push mower under unit. Mower is easier to push  
in from right side of the tractor.  
3. Slide a washer down to tabbed end of front pin.  
4. Align holes in front lift arms with slots at front of  
frame and slide front pin through arms and frame.  
5. Secure front pin with washer and cotter pin.  
6. Hook rear hanger into the holes in the bottom of  
the frame on both sides.  
Engaged  
Disengaged  
7. Secure rear hangers with hair pins.  
OE0730  
OE0720  
8. Hook the height adjusters onto the lift arm.  
4. Disconnect mower belt idler spring from bolt  
under frame.  
9. Secure height adjusters with washers and hair  
pins.  
5. Remove mower belt from mower pulley and electric  
10. Install mower belt onto mower pulley and electric  
clutch.  
clutch.  
6. Remove hair pins and washers holding height  
adjusters to lift arm, and unhook height adjusters  
from lift arm.  
11. Connect mower belt idler spring to bolt under  
frame.  
7. Unhook the rear hangers from the holes in the  
bottom of the frame.  
TO REMOVE 42" MOWER DECK  
1. Turn off engine, engage parking brake and allow  
hot parts to cool.  
8. Remove cotter pin and washer from end of front  
pin.  
2. Place center deck lift handle in lowest (1)  
position.  
9. Slide front pin out to release front lift arms from  
frame.  
22  
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WARNING: AVOID injury from stored energy  
in lift assist spring. DO NOT unlock  
attachment lift lever with mower deck  
removed. ALWAYS engage Attachment Lift  
Lever Lock when removing mower deck. See  
Operation.  
WARNING: AVOID injury from stored energy  
in lift assist spring. DO NOT unlock  
attachment lift lever with mower deck  
removed. ALWAYS engage Attachment Lift  
Lever Lock when removing mower deck. See  
Operation.  
3. Engage Attachment Lift Lock. Pull handle out and  
rotate down 90°. Handle will spring into locked  
position.  
2. Push mower deck under tractor from right side of  
unit.  
3. Attach deck lift with washers and hair pins.  
4. Attach rear deck link with clevis pins and hair  
pins.  
5. Place mower belt around drive pulley, idler and  
clutch pulley.  
6. Place rod link in holding brackets at front of deck  
and engage rod link locking brackets.  
Engaged  
Disengaged  
OE0730  
OE0720  
7. Tighten nut on end of rod link until it is snug.  
MOWER HEIGHT ADJUSTMENT  
Cutting Height Settings Chart  
4. Loosen nut on rod link at front of tractor. It is not  
necessary to remove it entirely.  
5. Release rod link locking brackets from rod link at  
front of deck.  
Setting  
Cut grass length  
1-3/8" (35 mm)  
2" (51 mm)  
6. Remove mower belt from drive pulley.  
1
2
3
4
5
7. Remove hair pins and clevis pins from rear deck  
link.  
8. Remove hair pins and washers from deck lift.  
9. Pivot right front wheel to allow deck to slide past.  
2-3/4" (70 mm)  
3-1/2" (89 mm)  
4-3/8" (111 mm)  
10. Slide mower from under tractor. Mower is easier  
to remove from the right side of the tractor.  
4
3
To Adjust 48" Deck:  
1
5
2
6
Height Adjuster Nut  
Height  
Adjuster  
Adjusting Tab  
Carriage Bolt  
Flange Locknut  
Front  
OE0760  
OT0770  
7
8
1. Rod Link Locking  
Brackets  
2. Drive Pulley  
3. Belt  
5. Mower Frame  
6. Idler  
7. Adjuster Link Washer  
& Hair Pin  
1. To adjust mower height, place mower in the  
number three (3) position.  
2. Loosen height adjuster nuts.  
4. Rear Deck Link Hair  
Pin & Clevis Pin  
8. Rod Link Nut  
3. Remove hair pins and washers holding height  
adjusters to lift arm and unhook height adjusters  
from lift arm.  
TO INSTALL 42" MOWER DECK  
4. Turn height adjusters equally clockwise to raise  
mower, or equally counterclockwise to lower  
mower. Adjust for a height of 2-3/4" from ground  
to blade tip.  
1. The center deck lift handle should be in the  
lowest (1) position with the Attachment Lift Lock  
engaged.  
5. Hook height adjusters onto lift arm and check for  
correct height. If not correct, continue to turn  
height adjusters until height is correct.  
23  
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6. Tighten height adjuster nuts.  
On high side: Turn height adjuster nut  
counterclockwise to lower high side the other one  
half of the height difference.  
7. Secure height adjusters with washers and hair  
pins.  
To Adjust 42" Deck:  
Height Adjuster Nut  
1. Place mower in the number three (3) postition.  
2. Place anti-scalp rollers in highest position so they  
do not touch the ground during adjustment.  
Height  
Adjuster  
Adjusting Tab  
3. Turn the nuts on the bottom of the adjusters  
equally until the blade tips are 2 3/4from the  
ground.  
Carriage Bolt  
Flange Locknut  
4. Reset anti-scalp rollers to match desired  
attachment postition.  
OT0770  
4. Hook height adjusters onto lift arm and check  
side to side level. If not level, continue to turn  
height adjusters until deck is level side to side.  
TO LEVEL MOWER  
Adjust the mower while tractor is parked on level  
ground or driveway. Make sure tires are properly  
inated (See Specifications). If tires are overinated or  
underinated, you can not properly adjust your mower.  
5. Tighten height adjuster nuts.  
6. Secure height adjusters with washers and hair  
pins.  
To Check Side to Side Level  
To Adjust Side to Side Level (42" Deck)  
1. Position unit on a smooth, at, level surface. Set  
1. Place anti-scalp rollers in highest position so they  
do not touch the ground during adjustment.  
proper tire pressure.  
2. Position blade(s) side to side; measure distance  
of blade tips to oor at right and left side of mower  
pan. Rotate blade(s) 180˚ and check again. The  
measurement should be equal within 1/16 inch  
side to side.  
2. Put height adjustment lever in the number three  
(3) position.  
3. With a 1/2" open-end wrench, adjust the nuts on  
the bottom of the adjuster link until each end of  
the blade is 2-3/4" from the ground within 1/16".  
NOTE: To make measuring distance from blade to  
ground easier, obtain a wood block about 1 inch square  
by 5 inches long. Wrap the entire block with masking  
tape. Hold block in vertical position with its lower tip on  
ground. Push block against cutting edge of blade so as  
to make a mark on tape. Pull the block away and with a  
ruler measure the distance from lower block tip to  
mark.  
4. Reset anti-scalp rollers to match desired  
attachment position.  
MOWER PITCH  
Proper blade pitch is when the blade tip, measured  
from the bottom surface, is 1/8" to 1/4" lower at front of  
mower deck than when same tip is at rear of mower  
deck.  
Mower Deck  
Blade  
Cutting Edge  
Mower Deck  
Cutting Edge  
Cutting Height  
Front Blade  
Height  
Rear Blade  
Height  
Ground Level  
(Shown from front)  
OT0860  
Ground Level  
(Shown from side)  
OT0850  
To Adjust Side to Side Level (48" Deck)  
To Adjust 48" Deck  
To adjust pitch, loosen ange lock nuts and slide  
adjusting tabs up or down to achieve proper pitch.  
1. Loosen height adjuster nuts.  
2. Remove hair pins and washers holding height  
adjusters to lift arm and unhook height adjusters  
from lift arm.  
To Adjust 42" Deck  
3. On low side: Turn height adjuster nut clockwise  
on low side of mower pan to raise low side. Raise  
low side one half the measured difference in  
height between the low side and the high side.  
To adjust pitch, turn nut on rod link at front of mower  
deck. Turn the nut clockwise to raise the front of the  
deck. Turn the nut counterclockwise to lower the front  
of the deck.  
24  
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BELTS  
42" Mower Deck Diagram  
WARNING: MOVING PARTS can cut or  
6
2
5
amputate body parts. ALWAYS wait for  
moving parts to stop before unit maintenance  
or service.  
1
Clutch to Deck Belt Replacement (48" Deck)  
1. Disconnect main idler spring from bolt under  
frame.  
2. Remove belt from electric clutch and drive pulley.  
3. Install new belt onto drive pulley and electric  
clutch, checking for belt alignment and clearance.  
4
7
4. Connect main idler spring to frame.  
3
OE0820  
48" Mower Deck Diagram  
1. Clutch to Deck Belt  
2. Clutch Idler Arm  
3. Mower Deck Belt  
4. Drive Pulley  
6. Idler Spring  
7. Idler Eye-Bolt  
5
4
2
5. Electric Clutch  
1
6
Mower Deck Belt Replacement (48" Deck)  
1. Remove mower drive belt (see procedure above).  
2. Detach mower deck from tractor. See To Remove  
48" Mower Deck in Service and Adjustments.  
3
3. Remove sheave covers.  
4. Remove mower idler spring  
5. Remove mower deck belt.  
6. Install new mower deck belt onto mower sheaves  
and idler.  
OT0830  
1. Clutch to Deck Belt  
2. Clutch Idler Arm  
3. Drive Pulley  
5. Idler Spring  
6. Mower Deck Belt  
7. Install mower idler spring.  
8. Reinstall sheave covers.  
4. Electric Clutch  
9. Reinstall mower deck to tractor. See To Install 48"  
Mower Deck in Service and Adjustments.  
Clutch to Deck Belt Replacement (42" Deck)  
10. Reinstall mower drive belt.  
CAUTION: USE PROPER SPRING TOOL  
when releasing and installing springs. Stored  
energy in springs can cause injury.  
Mower Deck Belt Replacement (42" Deck)  
1. Detach mower deck from tractor. See To Remove  
42" Mower Deck in Service and Adjustments.  
1. Disconnect idler spring from the frame.  
2. Remove sheave covers.  
IMPORTANT: This requires a spring hook. DO NOT  
use a side cutter plyers. If the correct tool is not  
available, loosen the front nut until the belt can be  
easily removed from the deck.  
3. Loosen two nuts on belt adjustment arm, one turn  
each.  
1
2
2. Remove belt from electric clutch and drive pulley.  
3. Install new belt onto drive pulley and electric  
clutch, checking for belt clearance.  
4. Connect idler spring to frame.  
3
3
1
IE0580  
25  
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4. Remove the lock nut, washer, spring, and spacer  
from the eye-bolt. Discard the lock nut and inner  
spacer.  
4. Install new belt onto transaxles, then engine  
sheave. Check for belt alignment and clearance.  
5. Connect transaxle idler spring.  
5. Loosen the nut on the belt adjustment  
bracket. 2  
6. Rotate belt adjustment arm out of the way, and  
remove mower deck belt.  
7. Match marks on mower sheaves to marks on  
deck to properly align blades. 3  
5
5
8. Install new belt and move belt adjustment arm  
back into position, taking care to maintain blade  
alignment.  
4
2
3
9. Install new inner spacer, spring, new outer  
spacer, washer, and new lock nut onto eye bolt.  
1
Outer Spacer  
Inner Spacer  
OE0840  
1. Transaxle Idler  
Spring  
4. Transaxle Idler  
5. Transaxles  
2. Transaxle Belt  
3. Engine Sheave  
IE0570  
10. Tighten lock nut on eye-bolt until the outer spacer  
is just held rmly between the washer and  
bracket.  
IMPORTANT: Do Not Over-Tighten. Distance from  
washer to bracket must be 7/8" (22mm) and you must  
be able to rotate outer spacer with thumb and  
forenger.  
7/8" (22mm)  
IE0580  
IE0560  
11. Tighten nut on belt adjustment bracket. 2  
12. Tighten nuts on belt adjustment arm securely.  
1
IMPORTANT: Belt adjustment arm is not a oating  
idler. Arm must not move once belt tension is set or  
belt/blade damage will result.  
13. Reinstall sheave covers.  
14. Reinstall mower deck to tractor. See To Install 42"  
Mower Deck in Service and Adjustments.  
Transaxle Belt Replacement  
1. Remove transaxle idler spring from bolt under  
frame.  
2. Remove belt from transaxles.  
3. Remove belt from engine sheave.  
26  
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7. Lock the Speed Control Arm in place by  
tightening the two lock nuts.  
Clutch Shaft Belt Replacement  
1. Remove transaxle belt (see procedure above).  
2. Remove clutch shaft idler spring from frame.  
3. Remove clutch shaft belt from engine sheave.  
4. Remove clutch shaft belt from clutch sheave.  
8. Repeat procedure for other side of unit.  
9. Reinstall side shrouds.  
Eccentric  
Speed Control Arm  
Locknuts and Bolts  
6
5
3
Flange Bushing  
Locknuts and Bolts  
OE0082  
1
4
ADJUSTING THE UNIT TO TRACK  
STRAIGHT  
2
The primary reason the unit may not track straight is  
incorrect or unbalanced tire air pressure. First, check  
and adjust tire pressure. Increase pressure on the side  
the unit tracks toward. DO NOT exceed maximum  
recommended tire pressure. See Specifications.  
OE0840  
1. Transaxle Belt  
2. Clutch Shaft Idler  
Spring  
4. Engine Sheave  
5. Clutch Sheave  
6. Clutch Idler  
If adjusting tire air pressure does not the solve tracking  
problem the steering control lever travel may need to  
be adjusted.  
3. Clutch Shaft Belt  
5. Install new belt onto clutch sheave, then engine  
sheave. Check for belt alignment and clearance.  
To check steering control levers:  
With the engine off, push the steering control levers to  
their full forward position. If one lever travels farther  
than the other, they need to be adjusted.  
6. Connect clutch shaft idler spring to bolt.  
7. Reinstall transaxle belt.  
To adjust:  
ADJUSTMENTS  
1. Remove side shrouds. Set aside.  
Neutral Adjustment (Speed Control Lever)  
2. Loosen bolts which attach the eccentric to the  
seat support. Do not remove the bolts.  
1. Stop the engine. Remove the ignition key. Push  
the PTO knob into the OFFposition.  
3. Rotate eccentric to adjust the travel of the speed  
control arm. The thicker portion of the eccentric  
shortens the distance the steering control lever  
will travel forward. The thinner portion of the  
eccentric lengthens the distance the steering  
control lever will travel forward.  
CAUTION: PREVENT personal injury!  
ALWAYS MAKE CERTAIN that jack(s) or  
blocks used are stable, strong and will  
support the weight of the unit.  
2. Place jack(s) under rear transaxles only. If jack(s)  
are not available, place support blocks under both  
transaxles at the rear of the unit.  
3
1
2
3
3. Raise the rear drive wheels off the oor. Remove  
side shrouds. Set aside.  
4. Start the engine and run it at part throttle.  
2
1
5. Loosen the two lock nuts holding the Speed  
Control Arm.  
OE0850  
Shorter Travel  
1. Eccentric  
2. Bolt  
Longer Travel  
3. Speed Control Arm  
6. Rotate Flange Bushing until the wheel stops  
rotating.  
27  
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4. Adjust the rotation of the eccentrics on one or  
both sides of the unit so that the steering control  
levers align in the full forward position.  
WARNING: TRACTOR MOVEMENT can  
result in death or serious injury. NEVER jump  
start directly to the starter or starter solenoid.  
Tractor can move forward or backward and  
injure the person jump starting tractor.  
5. Tighten the eccentrics bolts.  
6. Reinstall the side shrouds.  
SEAT ADJUSTMENT  
Lift up and tilt seat forward to locate seat adjustment  
bolts on the seat plate. Loosen the bolts. Slide operator  
seat forward or rearward as desired. Retighten bolts.  
3. Connect the positive (+) jumper cable to the  
positive terminal of the discharged battery.  
4. Connect the other end of the same jumper cable  
to the positive (+) terminal of the booster battery.  
5. Connect one end of the second jumper cable to  
ANTI-SCALP ROLLERS (42" DECK)  
Rollers are intended to prevent lawn scalping, not to  
control cutting height.  
the negative () terminal of the booster battery.  
6. Make the nal jumper cable connection to the  
engine block or the furthest ground point away  
from the discharged battery.  
For proper operation, adjust the anti-scalp rollers to the  
same or higher than mower cutting height. For  
example, when mowing at the number three (3) height  
position, the anti-scalp rollers must be adjusted to their  
number three (3) or higher position.  
7. Follow "Starting" and "Shut-Off" steps in  
Operation.  
8. Remove jumper cables in the reverse order that  
you connected them. Remove cable from: the  
ground point, then the negative () terminal of the  
booster battery, then the positive (+) terminal of  
the booster battery, and nally the positive (+)  
terminal of the discharged battery.  
2
2
4
4
3
1
3
1
5
5
INTERLOCKS AND RELAYS  
Loose or damaged wiring may cause your tractor to run  
poorly, stop running, or prevent it from starting.  
OE0740  
TO START ENGINE WITH A WEAK  
BATTERY  
Check wiring. See "ELECTRICAL SCHEMATIC" in the  
Parts Manual. Contact your Gravely Dealer.  
TO REPLACE FUSE  
Replace with 30 amp automotive-type plug-in fuse.The  
fuse holder is located under seat support near right  
rear tire.  
CAUTION: Lead-acid batteries generate  
explosive gases. Keep sparks, ame and  
smoking materials away from batteries.  
Always wear eye protection when around  
batteries.  
ENGINE  
If your battery is too weak to start the engine, it should  
See the Engine Manual for specic information on  
maintenance, repair, or adjustments. Contact your  
Gravely Dealer or an authorized engine manufacturers  
service center for more information.  
be recharged. (See "BATTERY" in Maintenance.)  
If "jumper cables" are used for emergency starting,  
follow "Jump Starting" procedure.  
IMPORTANT: Your tractor is equipped with a 12 volt  
negative grounded system.The other vehicle must also  
be a 12 volt negative grounded system. Do not use  
your tractor battery to start other vehicles.  
Jump starting, battery charging or replacement is  
required when the starter motor will not crank the  
engine.  
To Jump Start Engine:  
1. Ensure battery is not frozen. If the uid is frozen,  
remove battery from unit and allow it to thaw  
before charging.  
2. The unit used for jump starting should have a 12  
volt battery with at least 500 cold cranking  
amperes and a negative grounded system.  
28  
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STORAGE  
Prepare your tractor for storage at the end of the  
Touch up all rusted or chipped paint surfaces;  
sand lightly before painting.  
season or if the tractor will not be used for 30 days or  
more.  
BATTERY  
Fully charge the battery for storage.  
CAUTION: Never store the tractor with  
gasoline in the tank inside a building where  
fumes may reach an open ame or spark.  
Allow the engine to cool before storing in any  
enclosure.  
After a period of time in storage, battery may  
require recharging.  
To help prevent corrosion and power leakage  
during long periods of storage, battery cables  
should be disconnected and battery cleaned  
thoroughly (See To Clean Battery and Terminals  
in Maintenance).  
TRACTOR / DECK  
IMPORTANT: Never spray unit with water or store unit  
outdoors. Water can seep into sealed bearings, which  
are sealed against dirt and debris only, causing  
reduced component life.  
After cleaning, leave cables disconnected and  
place cables where they cannot come in contact  
with battery terminals.  
Remove all dirt, grease, leaves, etc. Store in a clean,  
dry area.  
If battery is removed from tractor for storage, do  
not store battery directly on concrete or damp  
surfaces.  
Check entire tractor (See CLEANINGin the  
Maintenance section of this manual).  
ENGINE  
Inspect and replace belts, if necessary. (See  
"BELT REPLACEMENT" in the Service and  
Adjustments section of this manual).  
CAUTION: Never cover tractor while engine  
and exhaust areas are still warm.  
Lubricate as shown in Maintenance.  
Be sure that all nuts, bolts and screws are  
securely fastened. Inspect moving parts for  
damage and wear. Replace if necessary.  
See the Engine Manual for detailed instructions on  
storage.  
ATTACHMENTS & ACCESSORIES  
See your authorized Gravely dealer to add these  
optional accessories.  
SERVICE PARTS  
Be sure to always use genuine Gravely parts to keep  
your unit running like new.  
71500300 Front Weight Kit  
71500700 Rear Weight Kit  
71500900 Wheel Spacer Kit  
71501000 Tire Chain Kit  
71501100 Headlight Kit  
Part no.  
Qty  
3
Description  
03123700  
01584500  
07237500  
07234400  
07212300  
07234500  
Blade - 48" Deck  
Blade - 42" Deck  
Cog Belt - 42" Deck  
Belt - 48" Deck  
Transmission Belt  
2
1
1
71501200 Hourmeter Kit  
71501300 42" Mulching Kit  
81500600 Front Blade  
1
1
Clutch to Deck Belt - 48"  
Deck  
07237500  
1
Clutch to Deck Belt - 42"  
Deck  
81500800 2 Bucket Bagger - 42" Deck  
29  
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TROUBLESHOOTING  
PROBLEM  
CAUSE  
CORRECTION  
1. Steering-Control Levers not locked in  
1. Move both levers fully outward.  
2. Disengage attachment clutch.  
3. Fill fuel tank.  
Engine will  
not start or  
loses power  
neutral.  
2. Attachment clutch is engaged.  
3. Out of fuel.  
4. See "Engine Starting And Shut-Off" in  
Operation section.  
4. Engine not "CHOKED" properly.  
5. Engine ooded.  
5. Wait several minutes before attempting  
to start.  
6. Bad spark plug.  
6. Replace spark plug  
7. Clean/replace air lter.  
8. Replace fuel lter.  
7. Dirty air lter.  
8. Dirty fuel lter.  
9. Water in fuel.  
9. Drain fuel tank and carburetor, rell  
tank with fresh gasoline and replace  
fuel lter.  
10. Loose or damaged wiring.  
11. Carburetor out of adjustment.  
12. Weak or dead battery.  
13. Blown fuse.  
10. Check all wiring.  
11. Contact your Gravely Dealer.  
12. Recharge or replace battery.  
13. Replace fuse.  
14. Corroded battery terminals.  
15. Faulty ignition switch.  
16. Faulty solenoid or starter.  
17. Faulty operator presence switch.  
18. Cutting too much grass /too fast.  
14. Clean battery terminals.  
15. Contact your Gravely Dealer.  
16. Contact your Gravely Dealer.  
17. Contact your Gravely Dealer.  
18. Set in HIGHER CUTposition.  
19. Clean underside of mower.  
20. Check oil level/change oil.  
21. Connect and tighten spark plug wire.  
22. Clean engine air screen/ns.  
23. Clean/replace mufer.  
19. Buildup of grass, leaves and trash  
under mower.  
20. Low oil/dirty oil.  
21. Spark plug wire loose.  
22. Dirty engine air screen/ns.  
23. Dirty/clogged mufer.  
24. Engine valves out of adjustment.  
24. Contact your Gravely Dealer.  
1. Dirty air lter.  
1. Clean/replace air lter.  
2. Replace spark plug.  
3. Recharge or replace battery.  
4. Replace fuel lter.  
Engine hard  
to start  
2. Bad spark plug.  
3. Weak or dead battery.  
4. Dirty fuel lter.  
5. Stale or dirty fuel.  
6. Carburetor out of adjustment.  
5. Drain fuel tank and rell with fresh  
gasoline.  
6. Contact your Gravely Dealer.  
1. Weak or dead battery.  
1. Recharge or replace battery.  
2. Clean battery terminals.  
3. Check all wiring.  
Engine clicks  
but will not  
start  
2. Corroded battery terminals.  
3. Loose or damaged wiring.  
4. Faulty solenoid or starter.  
4. Contact your Gravely Dealer.  
30  
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PROBLEM  
CAUSE  
CORRECTION  
1. Faulty operator-presence safety switch.  
1. Contact your Gravely Dealer.  
Engine  
continues to  
run when  
operator  
leaves seat  
1. Engine throttle control not set at  
SLOWposition for 30 seconds before  
stopping engine.  
1. Move throttle control to SLOW”  
position and allow to idle for 30  
seconds before stopping engine.  
Engine  
backres”  
when turning  
engine OFF”  
1. Worn, bent or loose blade(s).  
2. Bent blade mandrel.  
1. Replace blade(s). Tighten blade bolt.  
2. Replace blade mandrel.  
Excessive  
vibration  
3. Loose/damaged parts.  
3. Tighten loose part(s). Replace  
damaged parts.  
1. Bulb(s) burned out.  
2. Loose or damaged wiring.  
3. Blown fuse.  
1. Replace bulb(s).  
Headlight not  
working  
(Optional)  
2. Check wiring and connections.  
3. Replace fuse.  
1. Bad battery cell(s).  
2. Poor cable connections.  
3. Faulty regulator.  
1. Replace battery.  
Battery will  
not charge  
2. Check/clean all connections.  
3. Contact your Gravely Dealer.  
4. Contact your Gravely Dealer.  
4. Faulty alternator  
1. Obstruction in clutch mechanism.  
2. Worn/damaged mower drive belt.  
3. Frozen idler pulley.  
1. Remove obstruction.  
2. Replace mower drive belt.  
3. Replace idler pulley.  
Mower blades  
will not rotate  
4. Frozen blade mandrel.  
4. Replace blade mandrel.  
1. Worn, bent or loose blade(s).  
2. Mower deck not level.  
1. Replace blade(s). Tighten blade bolt.  
2. Level mower deck.  
Uneven cut or  
poor grass  
discharge  
3. Buildup of grass, leaves, and trash  
under mower.  
3. Clean underside of mower.  
4. Replace blade mandrel.  
4. Bent blade mandrel.  
5. Engine speed too slow.  
6. Travel speed too fast.  
7. Wet grass.  
5. Place throttle control in FAST”  
position.  
6. Slow down.  
7. Allow grass to dry before mowing.  
8. Check tires for proper air pressure.  
9. Reinstall blades sharp edge down.  
10. Replace with correct blades.  
8. Low/uneven tire pressure.  
9. Blades improperly installed.  
10. Improper blades used.  
1. Improper air pressure in tires.  
2. Eccentrics out of alignment.  
1. Check and adjust tire pressure. DO  
NOT exceed maximum recommended  
tire pressure. (See Specifications.)  
Unit does not  
track straight  
2. See "Adjusting the Unit to Track  
Straight" in Adjustments Section.  
31  
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SPECIFICATIONS  
Model Number  
915015  
915016  
Description  
1742 ZT  
2048 ZT  
Engine Manufacturer  
Engine Model Number  
Engine Power - HP (KW)  
Briggs & Stratton  
311777  
17 (12.7)  
3250 100  
406777  
20 (15)  
Engine Operating Fast Idle  
Speed - RPM  
3300 100  
Engine Displacement - cu.  
in. (cc)  
6.0 (98)  
8.46 (139)  
Fuel  
See Engine Manual for type and grade  
3.5 (13.3)  
Fuel Tank Capacity - gal  
(Liters)  
Crankcase Capacity - qt  
(Liters)  
1.5 (1.4)  
2 (1.9)  
Length - in (cm)  
71.88 (182.6)  
50 (127)  
75.8 (192.5)  
60 (152.4)  
Width - in (cm)  
Height - in (cm)  
44.7  
Weight - lbs (Kg)  
620 (281.5)  
628 (285.1)  
Front Wheel Size - in (cm)  
Rear Wheel Size - in (cm)  
Pressure (all tires)  
11.0 x 4.00-5 (18 x 3.8)  
18 x 8.50-8 4 ply  
2
15 to 20 psi (103 to 138 kN/m )  
32  
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2Year Limited Warranty  
GT and GLT Tractors, ZT Mower, PRO 21 Mower, String Trimmer  
Gravely Division of Ariens Company  
655 West Ryan Street  
P.O. Box 157  
Brillion, WI 54110-0157  
920-756-2141  
Gravely, Division of Ariens Company warrants to the original purchaser that consumer  
products manufactured by Gravely will be free from defects in material and workmanship  
for a period of two (2) years after the date of purchase. Gravely will repair any defect  
in material or workmansip, and repair or replace any defective part, subject to the  
exceptions, exclusions, conditions and limitations set forth herein.  
Fax 920-756-2407  
The two year duration of this warranty applies only if the product is put to ordinary,  
reasonable, and usual personal, family, or household uses. If the product is put to any  
business, commercial, or industrial use, such as, but not limited to, commercial  
landscaping, mowing or snow removal services, or golf course or park maintenance,  
or agricultural or farmstead use, then the duration of this warranty is ninety (90) days  
after the date of purchase, or one (1) year after the date of purchase for the Pro 21  
Mower. If any product is rented or leased, then the duration of this warranty is ninety  
(90) days after date of purchase.  
Genuine Gravely service parts and accessories not purchased with the product  
covered by this warranty, but which are later purchased and used with that product,  
are warranted to be free from defects in material and workmanship for a period of  
ninety (90) days after date of purchase, and Gravely will repair or replace any such  
part or accessory free of charge, except for labor, during that period.  
This warranty is subject to the following exceptions, conditions, and limitations:  
This warranty is valid only if the following conditions are  
met:  
• The warranty registration card must be completed and  
returned to Gravely.  
The following items are not covered by this warranty:  
• Engines and engine accessories are covered only by the  
warranty made by the engine manufacturer, and are not  
covered by this warranty.  
• The purchaser must perform maintenance and minor  
adjustments explained in the owner’s manual.  
• The purchaser must promptly notify Gravely or an authorized  
Gravely service representative of the need for warranty  
service.  
• If the product is equipped with a Peerless gearbox and/or  
transmission, the gearbox and/or transmission are covered  
only by the warranty made by Peerless, and are not covered  
by this warranty.  
• Service work performed by, and parts installed by, someone  
other than an authorized Gravely service representative are  
not covered by this warranty.  
• Parts that are not genuine Gravely service parts are not  
covered by this warranty.  
• Shoes, runners, scraper blades, shear bolts, mower blades,  
mower vanes, trimmer line, headlights, light bulbs, are not  
covered by this warranty.  
• Any defect which is the result of misuse, alteration, improper  
assembly, improper adjustment, neglect, or accident, is not  
covered by this warranty.  
• Products which were not purchased in the United States,  
Puerto Rico, or Canada are not covered by this warranty. In  
all other countries, contact place of purchase.  
This warranty is subject to the following limitations:  
• The purchaser must transport the product to and from the  
place of warranty repair.  
• Warranty service must be performed by an authorized Gravely  
service representative. (To find an authorized Gravely service  
representative, contact Gravely at the number or address  
above.)  
• Batteries are warranted for a period of twelve (12) months  
after date of purchase, on a prorated basis. For the first  
ninety (90) days of the warranty period, a defective battery  
will be replaced without charge. If the applicable warranty  
period is more than ninety (90) days, Gravely will cover the  
prorated cost of any defective battery, for up to twelve (12)  
months after date of purchase.  
LIMITATION OF REMEDY AND DAMAGES  
DISCLAIMER OF FURTHER WARRANTY  
Gravely’s liability under this express warranty, and under any  
implied warranty that may exist, is limited to repair or replacement  
of any defective part. Gravely shall not be liable for incidental,  
special, or consequential damages (including lost profits). Some  
states do not allow the exclusion of incidental or consequential  
damages, so the above limitation or exclusion may not apply  
to you.  
Gravely makes no warranty, express or implied,  
other than what is expressly made in this  
warranty. If the law of your state provides that  
an implied warranty of merchantability, or an  
implied warranty of fitness for particular purpose,  
or any other implied warranty, applies to Gravely,  
then any such implied warranty is limited to the  
duration of this warranty. Some states do not  
allow limitations on how long an implied warranty  
lasts, so the above limitation may not apply to  
you.  
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.  
Form: GCLW2-051900  
33  
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GRAVELY  
A Division of Ariens Company  
655 West Ryan Street  
P.O. Box 157  
Brillion, WI 54110-0157  
920-756-2141  
Fax 920-756-2407  
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