Lawn Mower 988105 HR1536FX 988106 HR1548FX 988107 HR1548FL 988108 HE1748FL 988109 HE1752FL 988113 HR1544FX 988116 HR1548FLP 988117 HE1752FLP 988120 HR1536FLP 988314 HR1536FXPCE User Manual
Pro Unit  
Owner/Operator Manual  
Models  
988105 - HR1536FX  
988106 - HR1548FX  
988107 - HR1548FL  
988108 - HE1748FL  
988109 - HE1752FL  
988113 - HR1544FX  
988116 - HR1548FLP  
988117 - HE1752FLP  
988120 - HR1536FXP  
988314 - HR1536FXPCE  
ENGLISH  
FRANÇAIS  
ESPAÑOL  
04941500 7/03  
Printed in USA  
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Stated Sound Power Levels are established following Annex VIII “Full Quality Assurance” of directive 2000/14/EC.  
Les déclarations de niveau de puissance acoustique sont établies conformément à l’Article VIII « Assurance  
qualité totale » de la directive 2000/14/EC.  
Die angegebenen Geräuschpegel wurden gemäß Anhang VIII „Totales Qualitäts-Management“ der EU-Richtlinie  
2000/14/EC.  
Gespecificeerde geluidssterkteniveaus zijn vastgesteld aan de hand van Annex VIII “Full Quality Assurance”  
(Volledige kwaliteitsborging) van richtlijn 2000/14/EG.  
I livelli di potenza sonora dichiarati sono rilevati in base all’Appendice VIII del “Controllo qualità totale” della direttiva  
CE/2000/14.  
Los niveles de potencia acústica se establecen siguiendo el Anexo VIII “Garantía de calidad total” de la directiva  
2000/14/EC.  
De anførte lydstyrkeniveauer er fastlagte efter tillæg VIII “Fuld kvalitets sikring” i direktiv 2000/14/EF.  
Lydeffektnivåene er fastsatt etter tillegg VIII ”Full kvalitetssikring” i direktivet 2000/14/EF.  
Fastställda ljudnivåer har etablerats enligt bilaga VIII “Full kvalitetssäkring” i direktiv 2000/14/EC.  
Notified Body –  
SNCH/TUV Rheinland  
11, Route de Luxembourg  
L-5230 Sandweiler  
Entité notifiée – Benachrichtigte Körperschaft –  
Certificeringsinstantie –Organismo notificato –  
Cuerpo notificado – Bekendtgjort til – Kunngjøring til –  
Underrättad myndighet –  
Keeper of Technical File- Philip J. Smucker  
Dépositaire du fichier technique - Verwalter der  
technischen Dokumente - Houder technische  
gegevens - Depositario del file tecnico -  
Depositario del archivo técnico - Ansvarlig for  
teknisk data - Ansvarlig for teknisk  
dokumentasjon - Innehavare of teknisk fil -  
Signature/Unterschrift/  
Handtekening/Firma/  
Underskrift/Underskrift  
Handlekening/Under-  
6/16/03  
Date/Datum/Data/  
Fecha/Dato/Päiväys  
Philip J. Smucker  
Manager of Product Conformance  
skrift/Allekirjoitus  
Position/Qualité/Functie/Qualifica/Puesto/Stilling/Titel/Arvo  
Ariens Company  
WARNING  
The engine exhaust from this product  
contains chemicals known to the State  
of California to cause cancer, birth  
defects or other reproductive harm.  
3
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CONTROLS AND FEATURES  
3
3 4 5 6  
988105,  
106, 107,  
108, 109,  
113  
2
7
10  
9
8
2
13  
1
1
11  
15  
17  
18  
16  
12  
5
19  
10  
16  
13  
988116,  
117, 120,  
314  
15  
1
4
21  
1
3
11  
15  
20  
14  
17  
7
17  
12  
OG1300  
OG0542  
Figure 1  
ENGLISH  
1. Operator Presence  
Control Lever  
FRANÇAIS  
1. Contacteur de présence  
de l’opérateur  
19. Leviers de commande  
17. Palancas de la válvula  
(988116, 117, 120, 314)  
20. Levier de verrouillage de  
butée de commande  
(988116, 117, 120, 314)  
21. Barre de pivot (988116,  
117, 120, 314)  
de sobrecarga  
18. Palanca direccional  
(988105, 106, 107, 108,  
109, 113)  
19. Palancas de control  
(988116, 117, 120, 314)  
20. Palanca de control de  
traba por tope (988116,  
117, 120, 314)  
2. Steering Lever Latch  
2. Verrou de la poignée  
de direction (988105,  
106, 107, 108, 109, 113)  
3. Frein de stationnement  
4. Starter  
5. Manette des gaz  
6. Témoin de niveau d’huile  
(988108, 109, 117)  
7. PdF  
8. Leviers de vitesses  
(988105, 106, 107, 108,  
109, 113)  
9. Plaque de levier unique  
(988105, 106, 107, 108,  
109, 113)  
10. Compteur horaire  
11. Bouchon du réservoir  
12. Réservoir d’huile  
hydraulique  
13. Poignée du démarreur  
manuel  
14. Démarrage par temps  
froid  
15. Batterie (988108, 109,  
117)  
(988105, 106, 107, 108,  
109, 113)  
3. Parking Brake  
4. Choke Control  
5. Throttle Lever  
6. Oil Light (988108, 109,  
117)  
7. PTO Switch  
8. Speed Control Levers  
(988105, 106, 107, 108,  
109, 113)  
9. Single Lever Plate  
(988105, 106, 107, 108,  
109, 113)  
ESPAÑOL  
1. Palanca de control de  
presencia del operador  
2. Traba de la palanca  
de dirección (988105, 106,  
107, 108, 109, 113)  
3. Freno de estacionamiento  
4. Control del estrangulador  
5. Palanca de aceleración  
6. Luz del aceite (988108,  
109, 117)  
7. Commande de la TDF  
8. Palancas de control  
de velocidad (988105,  
106, 107, 108, 109, 113)  
9. Placa para palanca  
sencilla (988105, 106,  
107, 108, 109, 113)  
21. Barra de pivote (988116,  
117, 120, 314)  
10. Hourmeter  
11. Fuel Cap  
12. Hydraulic Fluid Tank  
13. Recoil Starter Handle  
14. Cold Start Disengage  
15. Battery (988108, 109,  
117)  
16. Ignition Switch  
17. Bypass Valve Levers  
18. Steering Lever (988105,  
106, 107, 108, 109, 113)  
19. Control Levers (988116,  
117, 120, 314)  
10. Horómetro  
11. Tapa de combustible  
12. Depósito del líquido  
hidráulico  
13. Manilla de arranque de  
retroceso  
14. Desactivación de  
arranque en frío  
15. Batería (988108, 109, 117)  
16. Interruptor de encendido  
16. Contacteur d’allumage  
17. Manettes de la valve  
de roue libre  
18. Poignée de direction  
(988105, 106, 107, 108,  
109, 113)  
20. Control Stop Lock Lever  
(988116, 117, 120, 314)  
21. Pivot Bar (988116, 117,  
120, 314)  
4
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º
TABLE OF CONTENTS  
Controls and Features. . . . . . . . . . . . . . . . . . . . . 4  
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
Service and Adjustments . . . . . . . . . . . . . . . . . . 20  
Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 28  
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29  
Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29  
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 30  
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32  
INTRODUCTION  
THE MANUAL  
PRODUCT REGISTRATION  
Before operation of unit, carefully and completely read  
your manuals. The contents will provide you with an  
The Gravely dealer must register the product at the time  
of purchase. Registering the product will help the  
understanding of safety instructions and controls during company process warranty claims or contact you with  
normal operation and maintenance.  
the latest service information. All claims meeting  
requirements during the limited warranty period will be  
honored, whether or not the product registration card is  
returned. Keep a proof of purchase if you do not register  
your unit.  
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  
Customer Note: If Dealer does not register your  
product, please fill out, sign and return the product  
registration card to Gravely.  
When ordering replacement parts or  
Transfer  
model & serial  
number label  
from product  
registration  
here.  
making service inquiries, know the  
Model and Serial numbers of your  
unit and engine.  
UNAUTHORIZED REPLACEMENT PARTS  
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. To locate your  
nearest Gravely Dealer, call 1-800-472-8359 or go to  
www.gravely.com on the internet.  
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.  
Serial  
Number  
Label  
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.  
OG1400  
Figure 2  
•
Record Engine Model and Serial numbers here.  
DEALER DELIVERY  
Dealer should:  
1. Check all controls for proper function.  
2. Check the safety interlock system to make sure  
that it is functioning properly. (See Check Safety  
Interlock System on page 17.)  
3. Fill out Original Purchaser Registration Card and  
return the card to Gravely.  
4. Explain Limited Warranty Policy.  
© Copyright 2003 Ariens Company  
GB - 5  
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5. Explain recommended lubrication and  
6. Instruct customer on controls and operation of  
unit. Discuss and emphasize the Safety  
maintenance. Advise customer on adjustments.  
Precautions. Give customer Owner/Operator,  
Parts, and Engine Manuals. Advise customer to  
thoroughly read and understand them.  
SAFETY  
NOTATIONS  
NOTE: General reference information for proper  
operation and maintenance practices.  
WARNING: This cutting machine is capable  
of amputating hands and feet and throwing  
objects. Failure to observe the safety  
IMPORTANT: Specific procedures or information  
required to prevent damage to unit or attachment.  
instructions in the manuals and on decals  
could result in serious injury or death.  
Slopes are a major factor related to  
loss-of-control and tip-over accidents.  
Operation on all slopes requires extra  
caution.  
PRACTICES AND LAWS  
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, including those that may  
restrict the age of the operator.  
Tragic accidents can occur if the operator is  
not alert to the presence of children. Never  
assume that children will remain where you  
last saw them.  
Gasoline is extremely flammable and the  
vapors are explosive, handle with care.  
REQUIRED OPERATOR TRAINING  
Disengage attachment, stop unit and engine,  
remove key, engage parking brake, and allow  
moving parts to stop before leaving operator’s  
position.  
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.  
SAFETY ALERTS  
Look for these symbols to point out  
important safety precautions. They mean:  
SAFETY DECALS AND LOCATIONS  
ALWAYS replace missing or damaged Safety Decals.  
Refer to figures below for Safety Decal locations.  
Attention!  
Personal Safety Is Involved!  
Become Alert!  
1
Obey The Message!  
The safety alert symbols above and signal words below  
are used on decals and in this manual.  
2
Read and understand all safety messages.  
DANGER/PELIGRO  
07731400D  
DANGER: IMMINENTLY HAZARDOUS  
SITUATION! If not avoided, WILL RESULT in  
death or serious injury.  
4
DANGER/PELIGRO  
Stay clear of rotating parts.  
Rester  
à
l’écart des pièces  
en rotation.  
Mantenerse alejado de las  
piezas giratorias.  
05236900A  
2
DANGER/PELIGRO  
WARNING: POTENTIALLY HAZARDOUS  
SITUATION! If not avoided, COULD  
RESULT in death or serious injury.  
07731400D  
3
WARNING/AVERTISSEMENT/ADVER  
notTENCIA  
Do  
operate  
Ne jamais utiliser No operar segadora  
la tondeuse sans menos que las  
protecteur sur le defensas esten en  
a
mower unless  
guards are in  
operating position  
or bagger is  
canal d'ejection  
ou  
posicion de operacion  
o el recogedor este  
fijo.  
07742300B  
CAUTION: POTENTIALLY HAZARDOUS  
SITUATION! If not avoided, MAY RESULT in  
minor or moderate injury. It may also be  
used to alert against unsafe practices.  
attached.  
sans le bac  
monte.  
OG1498  
Figure 3  
GB - 6  
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•
Maintenez toujours en place tous  
•
Mantenga artefactores de seguridad (defensas, protectores, interruptores, etc.) en su lugar  
y
TO AVOID SERIOUS INJURY OR DEATH:  
DANGER  
/
PELIGRO  
Always stand clear of discharge area.  
DO NOT direct discharge toward other  
people. Remove objects that could be  
thrown by the blade. DO NOT operate  
mower over gravel and hard surfaces.  
les elements de securite  
trabajando.  
Read the operator's manual.  
•
Keep children  
(protecteurs, interupteurs, etc.).  
•
•
Verifique en el manual el sistema de engranar antes de usar.  
•
No permitir que personal sin  
and others away from unit while operating.  
Never direct discharge toward other people.  
•
Controlez le bon fonctionnement  
des interrupteurs de securité avant  
utilisation tel q'uindiqué dans le  
la necesaria formación use la máquina.  
•
Cuando se estacione en una pendiente,  
Thrown objects can cause injury.  
•
Keep  
1
safety devices (guards, shields,  
switches, etc.) in place and  
manuel d'utilisation.  
Ne jamais permettre l'utilisation  
par des personnes n'ayant pas  
reçu la formation nécessaire.  
En cas de stationnement en  
•
working.  
•
Check interlock  
system per manual before use.  
Never allow operation by  
untrained persons.  
•
•
05356100A  
OL0910  
2
Keep people and pets away when  
operating unit. Keep children out of the  
work area and under the watchful care  
of a responsible adult.  
DANGER/PELIGRO  
4
07731400D  
DANGER/PELIGRO  
Stay clear of rotating parts.  
Rester  
à
l’écart des pièces  
en rotation.  
OL4370  
Mantenerse alejado de las  
piezas giratorias.  
05236900A  
Shut off engine, remove key, read  
manual before you unplug, adjust or  
repair unit.  
2
DANGER/PELIGRO  
07731400D  
OL4010  
NO STEP! Always keep feet away from  
rotating parts.  
3
WARNING/AVERTISSEMENT/ADVERTENCIA  
Do not operate mower Ne jamais utiliser  
No operar segadora  
a
unless guards are in  
operating position or  
bagger is attached.  
la tondeuse sans  
protecteur sur le  
menos que las defensas  
esten en posicion de  
el recogedor  
canal d'ejection ou operacion  
sans le bac monte. este fijo.  
o
07742300B  
OL4420  
OG1495  
Figure 4  
3. Warning!  
1. Danger! To avoid serious injury or death  
Always stand clear of discharge.  
Read the operator’s manual.  
OL0910  
OL1801  
Keep children and others away from unit  
while operating.  
DO NOT operate mower unless guards  
are in operating position or bagger is  
attached.  
OL3320  
OL4370  
Never direct discharge toward other  
people. Thrown objects can cause injury.  
4. Danger!  
Stay clear of rotating parts.  
OL0910  
•
•
Keep safety devices (guards, shields,  
switches, etc.) in place and working.  
OL5100  
Check interlock system per manual before  
use.  
SAFETY RULES  
Read, understand and follow all safety practices in  
Owner/Operator Manual before beginning assembly.  
Failure to follow instructions could result in personal  
injury and/or damage to unit.  
•
•
Never allow operation by untrained persons.  
When parking on a slope always engage  
parking brake. Disengage PTO, stop unit and  
engine, set parking brake and remove key  
before making any inspections, repairs, etc.  
ALWAYS remove key (if equipped) and disconnect wire  
from spark plug before assembly. Unintentional engine  
start up can cause death or serious injury.  
2. Danger! Rotating Blades  
Complete a walk around inspection of unit and work  
area to understand:  
ROTATING BLADE! Keep hands and  
feet away.  
•
•
•
Work area  
Your unit  
OL3030  
All safety decals  
GB - 7  
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ALWAYS check overhead and side clearances carefully  
before operation.  
NEVER place your hands or any part of your body or  
clothing inside or near any moving part while unit is  
running.  
ALWAYS be aware of traffic when operating along  
streets or curbs.  
DO NOT wear loose clothing or jewelry. Tie back hair  
that may get caught in rotating parts.  
Keep children and people away.  
Keep children and people away from unit during  
operation.  
Keep children out of work area and under watchful care  
of a responsible adult.  
Fumes from engine exhaust can cause injury or death.  
Keep area of operation clear of all toys, pets, and  
debris. Thrown objects can cause injury.  
DO NOT run engine in an enclosed area. Always  
provide good ventilation.  
Check for weak spots on docks, ramps or floors. Avoid  
uneven work areas and rough terrain.  
Thrown objects can cause injury and property damage.  
DO NOT point discharge at anyone or discharge  
directly onto paved or gravel surfaces.  
ALWAYS be sure of your footing. Keep a firm hold on  
handlebar. Walk, NEVER run.  
Always stand clear of the discharge area when  
operating this unit.  
DO NOT operate on wet grass.  
Dust, smoke, fog, etc. can reduce vision and cause an  
accident. Operate unit only when there is good visibility  
and light.  
Read, understand, and follow all instructions in the  
manual and on the machine before starting.  
Understand:  
Read the entire Owner/Operator manual and other  
training material. If the operator or the mechanic  
cannot read the manual, it is the owner’s responsibility  
to explain it to them. Only the user can prevent and is  
responsible for accidents or injuries occurring to  
themselves, other people or property.  
•
•
•
•
•
How to operate all controls  
The functions of all controls  
How to STOP in an Emergency  
Braking and steering characteristics  
Turning radius and clearance  
•
•
Only trained adults may operate or service unit  
Training includes actual operation  
ALWAYS keep protective structures, guards, and  
panels in good repair, in place and securely fastened.  
NEVER allow children to operate or play on or near  
unit.  
NEVER modify or remove safety devices.  
ALWAYS keep discharge cover or complete grass  
catcher in place and in proper working condition.  
Be alert and shut off unit if children enter area.  
Never carry passengers.  
Check steering control operation frequently. Adjust and  
service as required.  
NEVER operate unit after or during the use of  
medication, drugs or alcohol. Safe operation requires  
your complete and unimpaired attention at all times.  
Safety Interlock System must function properly. DO  
NOT operate unit if operator presence control is  
damaged or disabled.  
NEVER allow anyone to operate this unit when their  
alertness or coordination is impaired.  
If you strike an object, or if equipment vibrates  
Wear adequate safety gear, protective gloves and  
footwear.  
abnormally, stop engine at once, disengage PTO, wait  
for all moving parts to stop, and remove key. Check for  
any damage or loose parts. Repair before restart.  
NEVER wear open sandals or canvas shoes during  
operation.  
Before starting engine: disengage PTO, engage  
parking brake and place unit in neutral.  
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. DO NOT change  
engine governor settings or over-speed engine. Slow  
down and turn corners slowly.  
Sharp edges can cut. Moving parts can cut off fingers  
or a hand. Wrap blade(s), wear sturdy gloves and use  
extreme caution when servicing. On multi-blade  
mowers, rotation of one blade will cause all blades to  
rotate.  
Disengage PTO when attachment is not in use. DO  
NOT raise deck with blades running. ALWAYS turn off  
power to attachment when travelling, crossing  
driveways, etc.  
ALWAYS keep hands and feet away from all rotating  
parts during operation. Rotating parts can cut off body  
parts.  
Avoid uneven and rough terrain. DO NOT operate near  
drop offs, ditches, or embankments. Unit can suddenly  
turn over if a wheel is over the edge of a cliff or ditch, or  
if an edge caves in.  
ALWAYS keep hands away from all pinch points.  
DO NOT touch unit parts which might be hot from  
operation. Allow parts to cool before attempting to  
maintain, adjust or service.  
DO NOT try to stabilize unit by putting foot on ground  
when operating with applicable riding attachments.  
GB - 8  
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When engine is running and speed control lever is  
forward, holding only one steering lever will cause unit  
to circle around one drive wheel.  
When practical, remove gas-powered equipment from  
the truck or trailer and refuel it on the ground. If this is  
not possible, then refuel such equipment on a trailer  
with a portable container, rather than from a gasoline  
dispenser nozzle.  
Use care when approaching blind corners, shrubs,  
trees or other objects that may obscure view.  
Keep the nozzle in contact with the rim of the fuel tank  
or container opening at all times until fueling is  
complete. Do not use a nozzle lock-open device.  
ALWAYS disengage PTO, stop unit and engine, set  
parking brake, remove key and allow moving parts to  
stop before clearing clogs or cleaning unit.  
If fuel is spilled on clothing, change clothing  
immediately.  
Never leave a running unit unattended. ALWAYS shut  
off engine before leaving unit.  
NEVER store fuel inside where there is an open flame,  
such as a water heater.  
ALWAYS remove key to prevent unauthorized use.  
DO NOT operate in reverse unless absolutely  
necessary. ALWAYS backup slowly. ALWAYS look  
down and behind, before and while backing.  
Avoid Electric Shock. Objects contacting both battery  
terminals at the same time may result in injury and unit  
damage. DO NOT reverse battery connections.  
DO NOT operate on steep slopes. DO NOT operate on  
slopes of more than 10°. Operate across the face of  
slopes, not up and down.  
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.  
Turf conditions can affect the unit’s stability.  
Keep all movement on slopes slow and gradual. DO  
NOT make sudden changes in speed or direction. Use  
a slow speed to avoid stopping or shifting on slopes.  
Avoid starting or stopping on a slope.  
ALWAYS disconnect negative (-) cable FIRST and  
positive (+) cable SECOND. ALWAYS connect positive  
(+) cable FIRST, and negative (-) cable SECOND.  
Explosive Gases from battery can cause death or  
serious injury. Poisonous battery fluid contains sulfuric  
acid and its contact with skin, eyes or clothing can  
cause severe chemical burns.  
DO NOT park unit on a slope unless absolutely  
necessary. When parking on a slope always engage  
parking brake and block wheels.  
Use extra care when loading or unloading unit onto  
trailer or truck.  
No flames, No sparks, No smoking near battery.  
ALWAYS wear safety glasses and protective gear near  
battery. Use insulated tools.  
Secure unit chassis to transport vehicle. NEVER  
secure from rods or linkages that could be damaged.  
DO NOT TIP battery beyond a 45˚ angle in any  
direction.  
DO NOT transport machine while engine is running.  
Keep unit free of grass, leaves, or other debris. Clean  
up oil or fuel spills.  
ALWAYS keep batteries out of reach of children.  
Battery posts, terminals and related accessories  
contain lead and lead compounds, chemicals known to  
the State of California to cause cancer and  
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.  
reproductive harm. Wash hands after handling.  
Reverse connections may cause sparks which may  
result in injury. ALWAYS connect/disconnect cables in  
proper order.  
Poisonous battery fluid contains sulfuric acid and its  
contact with skin, eyes, or clothing can cause severe  
burns.  
Fuel is highly flammable and its vapors are explosive.  
Handle with care. Use an approved fuel container.  
No smoking, No sparks, No flames. ALWAYS allow  
engine to cool before servicing.  
Explosive Gases! No flames, No sparks, No smoking  
near battery.  
NEVER fill fuel tank when engine is running or hot from  
operation.  
ALWAYS wear safety glasses and protective gear near  
battery.  
NEVER fill or drain fuel tank indoors.  
DO NOT TIP battery beyond a 45° angle in any  
direction.  
Replace fuel cap securely and clean up spilled fuel.  
Never fill containers inside a vehicle or on a truck or  
trailer bed with a plastic liner. Always place containers  
on the ground away from your vehicle before filling.  
ALWAYS keep batteries out of reach of children.  
Before making any inspections, repairs, etc.:  
disengage PTO, stop unit and engine, set parking  
brake, remove key, allow moving parts to stop.  
GB - 9  
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ALWAYS keep body and hands away from pin holes or  
For unit storage or extended storage:  
nozzles which eject hydraulic fluid under pressure.  
•
NEVER store with fuel in fuel tank, inside a  
Allow hot parts to cool.  
building where any ignition sources are present.  
ALWAYS block wheels, engage parking brake and  
know all jack stands are strong, secure and will hold  
weight of unit during maintenance.  
•
Allow engine to cool completely.  
Use only attachments or accessories designed for your  
unit and that can be used safely on your terrain.  
An extension spring, when extended, stores energy  
and can be dangerous. Always use tools specifically  
designed for installing or removing an extension spring.  
Always compress or extend springs slowly.  
Check attachment components frequently for wear,  
damage or deterioration. Replace with manufacturer’s  
recommended parts for safety.  
To reduce fire hazard and overheating, keep equipment  
free of grass, leaves, debris or excessive lubricants.  
ALWAYS maintain unit in safe operating condition.  
Damaged or worn out muffler can cause fire or  
explosion.  
Use extra care with grass catchers and other  
attachments.These can change the stability of the unit.  
Use only approved hitch points.  
Keep hardware, especially blade attachment bolts,  
tight.  
ALWAYS be aware of attachments when turning.  
ALWAYS allow adequate clearance between  
attachments, personnel, and other objects.  
Maintain or replace safety and instruction labels, as  
necessary.  
ASSEMBLY  
7. Add clean fuel to the fuel tank. See engine  
manual for type and grade.  
WARNING: AVOID INJURY. Read and  
understand the entire Safety section before  
proceeding.  
8. Check for loose hardware.  
9. Be sure that safety interlock system operates  
correctly. See Check Safety Interlock System on  
page 17.  
1. Remove the unit from shipping container.  
2. Adjust tire pressure to 8 to 16 psi (55 to 110 kPa).  
10. Be sure that unit tracks straight.  
3. Service and connect battery. See Charge Battery  
Unit must not pull sharply to the left or right when  
the speed control levers are pushed quickly  
forward.  
on page 25.  
4. Check the adjustments outlined in Service &  
Adjustments.  
Unit must not pull sharply to the left or right when  
the steering levers are released. See Adjusting  
the Unit to Track Straight on page 20.  
5. Check engine oil level. See engine manual.  
6. Check hydraulic fluid level. See Maintenance.  
OPERATION  
Operator Presence Control (988105, 106, 107,  
108, 109, 113)  
The operator presence control lever must be  
depressed to operate the PTO.When the speed control  
levers are in forward position, the parking brake is off,  
or the PTO is engaged, releasing the operator  
presence control lever stops the engine.  
WARNING: AVOID INJURY. Read and  
understand the entire Safety section before  
proceeding.  
CONTROLS AND FEATURES  
Safety Interlock System  
NOTE: Moving the speed control levers out of neutral  
with the parking brake engaged will shut down the  
engine. PTO must be off and parking brake must be on  
to keep engine running when operator presence con-  
trol is released.  
DANGER: SAFETY INTERLOCK SYSTEM  
FAILURE and improper operation of unit can  
result in death or serious injury. ALWAYS  
know the safety interlock system is operating  
properly. See Check Safety Interlock System  
on page 17 for testing instructions.  
Operator Presence Control  
(988116, 117, 120, 314)  
The operator presence control levers must be  
depressed to operate the PTO. When the PTO is  
engaged, releasing the operator presence control  
levers stops the mower blades.  
The engine will only start with the PTO disengaged, the  
speed control levers in neutral and the parking brake  
on.  
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Throttle Lever  
CAUTION: AVOID INJURY. Operate only  
when operator presence control is  
functioning correctly. See Check Safety  
Interlock System on page 17 for testing  
instructions.  
The throttle lever changes the speed of the  
1
engine. Move the throttle lever to Fast (1) to  
increase engine speed. Move the lever to  
Slow (2) to decrease engine speed.  
2
OG1180  
Steering Levers (988105, 106, 107, 108, 109,  
113)  
Choke Control  
WARNING: AVOID INJURY. When the  
engine is running and the speed control  
levers are engaged, releasing only one  
steering latch causes the unit to circle  
around one drive wheel.  
Use the choke control to start a cold  
engine. Pull the control out to choke the  
engine. Push the control in when the  
engine gets warm.  
OG1190  
ALWAYS hold both steering levers in the  
neutral position when releasing the steering  
lever latches.  
Forward Speed Control Levers (988105, 106,  
107, 108, 109, 113)  
ALWAYS release levers slowly.  
The speed control levers set forward  
ground speed. Push both levers forward to  
increase speed. Pull both levers all the way  
back for neutral.  
The steering levers are used to steer, operate in  
forward and reverse, and stop the unit.The steering  
levers can be set to limit unit’s fastest forward speed.  
See Speed Range Adjustment.  
Move one lever at a time to control  
tracking.  
Steering Lever Latches (988105, 106, 107, 108,  
109, 113)  
The steering lever latches hold the steering levers in  
neutral.  
N
OG1170  
Single Lever Plate (988105, 106, 107, 108, 109,  
113)  
Control Levers (988116, 117, 120, 314)  
The single lever plate allows speed control levers to  
work as a single unit.  
WARNING: AVOID INJURY. When the  
engine is running , moving only one lever  
causes the unit to circle around one drive  
wheel.  
PTO Clutch (988105, 106, 107, 108, 109, 113)  
Pull the PTO (power take off) switch On  
(1) to engage the mower blades. Push  
ALWAYS move levers slowly.  
1
the PTO switch Off (2) to disengage the  
mower blades.  
The control levers are used to steer, operate in forward  
and reverse, and stop the unit. Push forward to move  
forward. Pull back to move in reverse.  
2
OE0260  
PTO Clutch (988116, 117, 120, 314)  
Ignition Switch (988108, 109, 117)  
Operate the ignition switch with the  
removable key. The switch has three  
1
2
1
positions: Off (1), On (2) and Start (3). To  
3
start the engine, turn the key to Start, then  
release to On. To stop the engine, turn the  
OF1210  
key to Off.  
2
OE0261  
Ignition Switch (988105, 106, 107, 113, 116,  
120, 314)  
3
Pull the PTO (power take off) switch past On (1) to  
Reset (2) to engage the mower blades. Push the PTO  
switch Off (3) to disengage the mower blades.  
Operate the ignition switch with the  
removable key. The switch uses two  
positions: Off (1) and On (2). To start the  
engine, turn the key to On (2) and pull the  
recoil handle. To stop the engine, turn the  
1
2
NOTE: Pull PTO switch to Reset (2) to engage mower  
blades after operator presence control has been  
released.  
OF1212  
key to Off (1).  
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Parking Brake  
Notch  
The parking brake holds the tractor in  
position when not in use.  
To engage parking brake, pull the brake  
handle back (1).  
2
1
To release parking brake, push the brake  
handle forward (2).  
Cold Start  
Disengage  
OG1320  
Figure 5  
FILL FUEL TANK  
Recoil Starter Handle  
Pull the recoil starter handle to start the engine.  
WARNING: Fuel is highly flammable and its  
vapors are explosive. Handle with care. Use  
an approved fuel container.  
Hour Meter  
Electric Start: The hour meter measures  
NO smoking, NO sparks, NO flames.  
ALWAYS allow engine to cool before  
servicing.  
NEVER fill fuel tank when engine is running  
or hot from operation.  
0
0
0
0
0
0
the number of hours that the key is in the  
run position and operator presence control  
is engaged.  
HOURS 1/10  
OG0620  
Recoil Start: The hour meter measures the number of  
hours the engine is running.  
NEVER fill or drain fuel tank indoors.  
Oil Pressure Light (988108, 109, 117)  
Replace fuel cap securely and clean up  
spilled fuel.  
The red light near this symbol comes on  
when the engine is running and engine oil  
pressure is low. Check oil level and add if  
OG0600  
Add fuel to the fuel tank as needed. See engine  
manual for type and grade of fuel.  
necessary. See Engine Manual.  
To add fuel to the fuel tank:  
1. Put the unit in an open area.  
2. Stop the engine.  
Cold Start Disengage  
Use the cold start disengage for easier starting on cold  
days.  
3. Allow engine to cool.  
1. Pull out cold start chain 1 to 4 links and lock chain  
in frame notch (Figure 5).  
4. Clean the fuel cap and the area around the fuel  
cap to prevent dirt from entering the fuel tank.  
2. Start engine and allow engine to warm to  
operating temperature.  
5. Remove the cap from the fuel tank.  
6. Fill the fuel tank. Be careful not to spill.  
7. Install the cap on the fuel tank and tighten.  
3. Slowly release chain from notch.  
WARNING: AVOID INJURY. Lock steering  
control levers in neutral before disengaging  
cold start feature. Unit will move if steering  
controls are engaged when cold start feature  
is released.  
8. Clean up any spilled fuel before starting the  
engine.  
TO STOP IN AN EMERGENCY  
1. Release operator presence control(s).  
2. Turn the ignition key Off.  
3. Allow engine to stop completely.  
4. Engage parking brake.  
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Electric Start (988108, 109)  
To start the engine:  
STARTING AND SHUT OFF  
Before Each Use  
1. Engage parking brake.  
Check each item in Each Use in the Maintenance  
2. Lock the steering lever latches in neutral.  
3. Put speed control levers in neutral.  
4. Move PTO switch to Off.  
Schedule.  
NOTE: The engine will not start unless the speed  
control levers are in neutral, the parking brake is On  
and the Power Take Off (PTO) is Off.  
5. If the engine is cold, choke the engine.  
6. Move the throttle to Fast.  
Recoil Start (988105, 106, 107, 113)  
1. Engage parking brake.  
7. Put the ignition key in the switch and turn it to  
Start.  
2. Lock the steering lever latches in neutral.  
3. Put speed control levers in neutral.  
4. Move PTO switch to Off.  
IMPORTANT: DO NOT operate starter motor more  
than 15 seconds per minute, as overheating and  
damage can occur. If engine will not start, refer to  
Troubleshooting or Engine Manual.  
5. Set throttle to the proper starting position. If the  
engine is cold, choke the engine.  
8. When the engine starts, release the key to Run  
position.  
6. Turn ignition switch to On.  
7. Grasp recoil starter handle and pull rope out  
slowly until it pulls harder.This is the compression  
stroke.  
9. After engine starts, adjust choke as needed.  
Allow engine to warm and run smoothly before  
operating unit.  
8. Let the rope rewind slowly.  
Electric Start (988117)  
To start the engine:  
9. Pull rope with rapid continuous full arm stroke to  
start engine. Allow rope to rewind slowly.  
1. Engage parking brake.  
IMPORTANT: DO NOT let starter handle snap against  
2. Bring control levers to neutral.  
3. Move PTO switch to Off.  
4. If the engine is cold, choke the engine.  
5. Move the throttle to Fast.  
engine.  
10. Repeat until engine starts. (If engine does not  
start, refer to Engine Manual.)  
11. After engine starts, adjust choke as needed.  
Allow engine to warm and run smoothly before  
operating unit.  
6. Put the ignition key in the switch and turn it to  
Start.  
Recoil Start (988116, 120, 314)  
1. Engage the parking brake.  
2. Bring control levers to neutral.  
3. Move PTO switch to Off.  
IMPORTANT: DO NOT operate starter motor more  
than 15 seconds per minute, as overheating and  
damage can occur. If engine will not start, refer to  
Troubleshooting or Engine Manual.  
7. When the engine starts, release the key to Run  
position.  
4. Set throttle to the proper starting position. If the  
engine is cold, choke the engine.  
8. After engine starts, adjust choke as needed.  
Allow engine to warm and run smoothly before  
operating unit.  
5. Turn ignition switch to On.  
6. Grasp recoil starter handle and pull rope out  
slowly until it pulls harder.This is the compression  
stroke.  
Shut Off  
1. Lock steering levers in neutral (988105, 106, 107,  
108, 109, 113).  
7. Let the rope rewind slowly.  
8. Pull rope with rapid continuous full arm stroke to  
start engine. Allow rope to rewind slowly.  
Bring control levers to neutral (988116, 117, 120,  
314).  
IMPORTANT: DO NOT let starter handle snap against  
engine.  
2. Put speed control levers in neutral (988105, 106,  
107, 108, 109, 113).  
9. Repeat until engine starts. (If engine does not  
start, refer to Engine Manual.)  
3. Move the throttle lever to Slow.  
4. Engage parking brake.  
10. After engine starts, adjust choke as needed.  
Allow engine to warm and run smoothly before  
operating unit.  
5. Turn the ignition key Off.  
6. Allow engine to stop completely.  
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•
•
•
To turn to the left, pull the left hand lever up.  
TO OPERATE UNIT  
Operate the unit only in the operator’s position directly  
behind the handlebars.  
WARNING: AVOID INJURY. When the  
engine is running and the speed control  
lever is engaged, holding only one steering  
lever in neutral causes the unit to circle  
sharply around one drive wheel.  
OG1440  
To turn to the right, pull the right hand lever up.  
988105, 106, 107, 108, 109, 113  
To operate:  
OG1450  
1. Start the engine (See Starting and Shut Off on  
To move in reverse, pull both steering levers up,  
past the neutral position. Pulling the levers farther  
up increases reverse speed.  
page 13).  
2. Move the throttle lever to the Fast position.  
3. Engage operator presence control.  
4. Release the parking brake.  
5. Set speed control levers to desired speed.  
6. Hold steering levers in neutral and release  
steering latch levers.  
OG1460  
WARNING: AVOID INJURY. When the  
engine is running and the speed control  
levers are engaged, releasing only one  
steering latch causes the unit to circle  
around one drive wheel.  
WARNING: Uncontrolled reverse travel can  
result in serious injury.  
Do not put steering levers into the reverse  
position unless you are prepared to operate  
in reverse. Speed control levers do not  
control reverse. Unit will move rearward with  
speed control levers in neutral.  
ALWAYS hold both steering levers in the  
neutral position when releasing the steering  
lever latches.  
ALWAYS release levers slowly.  
To mow:  
1. Engage operator presence control.  
•
To move straight forward; slowly release both  
steering levers to the full outward position.  
2. Move the speed control levers to the neutral  
position.  
3. Lock steering levers in neutral.  
4. Move the throttle lever to the fast position.  
NOTE: Operator presence control must remain  
engaged.  
OG1410  
•
•
To stop unit in neutral, hold levers in the neutral  
position.  
5. Move the PTO switch to On to engage mower.  
IMPORTANT: NEVER engage the PTO if the mower is  
plugged with grass or other material. This will damage  
the PTO belt.  
OG1420  
6. Move the speed control levers to set a slow  
ground speed.  
To lock unit in neutral, engage both steering  
latches.  
7. Hold steering levers in neutral and release  
latches.  
8. Release steering levers slowly.  
When you know how to operate the unit, select a speed  
appropriate to your mowing conditions.  
To stop mowing:  
OG1430  
1. Lock the steering levers in neutral.  
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2. Move the speed control levers to the neutral  
position.  
•
To move in reverse, pull both control levers  
backward, past the neutral position. Pulling the  
levers farther back increases reverse speed.  
3. Turn off PTO switch.  
988116, 117, 120, 314  
To operate:  
1. Start the engine (See Starting and Shut Off on  
page 13).  
OG1650  
2. Move the throttle lever to the Fast position.  
3. Engage operator presence control.  
WARNING: Uncontrolled reverse travel can  
result in serious injury.  
WARNING: AVOID INJURY. When the  
engine is running, using one steering control  
lever causes the unit to circle around one  
drive wheel.  
Do not put control levers into the reverse  
position unless you are prepared to operate  
in reverse.  
ALWAYS hold both steering levers when  
operating unit and move levers slowly.  
To mow:  
1. Move the throttle lever to the fast position.  
2. Engage operator presence control(s).  
•
•
To move straight forward, slowly push control  
levers forward.  
NOTE: Operator presence control must remain  
engaged.  
3. Move the PTO switch to On to engage mower.  
IMPORTANT: NEVER engage the PTO if the mower is  
plugged with grass or other material. This will damage  
the PTO belt.  
OG1600  
4. Push control levers forward slowly.  
To stop unit motion, allow control levers to return  
to neutral.  
When you know how to operate the unit, select a speed  
appropriate to your mowing conditions.  
To stop mowing:  
1. Allow control levers to return to neutral.  
2. Move the throttle lever to 1/2 speed.  
3. Turn off PTO switch.  
OG1610  
•
To turn to the left, push the right hand control  
lever forward.  
CUTTING HEIGHT ADJUSTMENT  
Fixed Decks (988105, 106, 113, 120, 314)  
1. Shut off the unit. See Shut Off on page 13 and  
"To stop mowing."  
2. Lift deck by handle until mower lock pins can be  
pulled out of holes.  
OG1630  
3. Turn latches slightly so they can’t snap back into  
place.  
•
To turn to the right, push the left hand control  
lever forward.  
4. Set deck to desired cutting height (Figure 6).  
5. Place mower lock pins into desired hole.  
IMPORTANT: Make sure lock pins are fully engaged.  
6. Repeat adjustment for other side of deck.  
OG1640  
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PARKING  
Fixed Deck Cutting Heights  
Inches (mm)  
988105, 106, 107, 108, 109, 113  
1. Shut off the unit. See Shut Off on page 13 and  
"To stop mowing."  
1 (25)  
2 (51)  
3 (76)  
4 (102)  
2. Remove the key.  
(38) 1.5  
(64) 2.5  
(90) 3.5  
3. Set parking brake.  
4. Chock or block the wheels if parked on a slope.  
988116, 117, 120, 314  
1. Shut off the unit. See Shut Off on page 13 and  
"To stop mowing."  
2. Remove the key.  
Figure 6  
OG1380  
3. Lock pivot bar against control levers.  
4. Chock or block the wheels if parked on a slope.  
Floating Decks (988107, 108, 109, 116, 117)  
1. Shut off the unit. See Shut Off on page 13 and  
"To stop mowing."  
2. Lift deck by handle until hair pins can be removed  
from height adjustment rods.  
3. Set deck to desired cutting height (Figure 7).  
4. Insert hair pins into appropriate holes on height  
adjusting rods.  
5. Repeat adjustment for other side of deck.  
NOTE: It may be necessary to adjust cutting height in  
steps to keep deck from binding.  
Floating Deck Cutting Heights  
1 (25)  
1.5 (38)  
2 (51)  
2.5 (64)  
3 (76)  
Inches  
(mm)  
3.5 (90)  
4 (102)  
Figure 7  
OG1385  
LAWN STRIPER ADJUSTMENT (44",  
48" and 52" decks; optional on 36" decks)  
The striper drags behind the deck and shapes grass as  
you mow.  
Adjust the striper to match cutting height.  
Short grass (deck low): mount from bottom holes.  
Tall grass (deck high): mount from top holes.  
GB - 16  
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IMPORTANT: Towing the unit will damage hydraulic  
motors.  
TO PUSH UNIT BY HAND  
To move the unit without the engine running:  
1. Rotate the bypass valve levers located on the  
back side of the pumps approximately 1/2 turn  
counterclockwise.  
TO TRANSPORT UNIT  
ALWAYS shut off engine, remove key and drain fuel  
when transporting unit on a truck or trailer. Use extra  
care when loading or unloading unit.  
2. Release parking brake.  
3. Push unit to desired location.  
Engage parking brake.  
4. Rotate the bypass valve levers located on the  
back side of the pumps approximately 1/2 turn  
clockwise to operate the unit.  
Secure unit chassis to transport vehicle. NEVER  
secure from rods or linkages that could be damaged.  
DO NOT transport machine while engine is running.  
MAINTENANCE  
** Change Hydraulic Fluid after first 50 hours of  
WARNING: AVOID INJURY. Read and  
understand the entire Safety section before  
proceeding.  
operation and every 500 hours thereafter.  
CHECK SAFETY INTERLOCK SYSTEM  
Test the safety interlock system at each operation. If  
the system does not function properly, do not operate  
the unit until repairs are made.  
MAINTENANCE SCHEDULE  
Each  
25  
50  
100 500  
Use  
988105, 106, 107, 108, 109, 113  
To test:  
Check Safety Interlock  
System  
•
1. With engine off, set controls as listed in line A of  
the table below.  
Check Air Cleaner  
Check Engine Oil  
Check Engine Cooling  
Check Fasteners  
•
•
•
•
•
•
2. Turn electric start model ignition switch to Start.  
Engine must not crank.  
3. Turn ignition switch to On. Pull recoil start handle.  
Engine must not start.  
4. Repeat steps 1-3 for lines B-D of the table below.  
Check Tire Pressure  
5. Shut off the unit, if necessary. See Shut Off and  
Check Hydraulic Fluid  
Level  
"To stop mowing."  
IMPORTANT: If the system does not function properly,  
do not operate the unit until repairs are made.  
Check Battery  
Check All Belts  
Mower Blades  
•
•
•
•
NOTE: Control settings that prevent engine starting will  
stop a running engine.  
Clean Air Cleaner Foam  
Element  
General Lubrication  
Change Engine Oil  
Check Fuel Filter  
Check Spark Plug  
Check Muffler  
•
*•  
•
•
A
B
C
D
Off  
Off  
On  
Off  
On  
Off  
On  
On  
No  
Yes  
Yes  
No  
On  
On  
On  
On  
Off  
Off  
Off  
On  
Off  
Off  
Off  
Off  
•
Clean Air Cleaner Paper  
Element  
•
Change Hydraulic Fluid  
and Filter  
**•  
* Change oil after first 8 hours of operation and every  
100 hours thereafter.  
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988116, 117, 120, 314  
CHECK TIRE PRESSURE  
To test:  
Check tires for proper inflation, excessive wear or  
damage before each use. The correct air pressure is  
8 to 16 psi (55 to 110 kPa).  
1. With engine off, set controls as listed in line A of  
the table below.  
2. Try starting the engine. See Starting and Shut Off  
CHECK HYDRAULIC FLUID LEVEL  
on page 13.  
IMPORTANT: If the system does not function properly,  
do not operate the unit until repairs are made.  
WARNING: HYDRAULIC FLUID UNDER  
PRESSURE can penetrate skin and cause  
severe burns that can result in death or  
serious injury.  
3. Repeat steps 1-2 for lines B-C of the table below.  
4. Shut off the unit, if necessary. See Shut Off and  
"To stop mowing."  
ALWAYS keep body and hands away from  
pin holes or nozzles which eject hydraulic  
fluid under pressure. ALWAYS use paper or  
cardboard and not hands to search for leaks.  
5. With the engine running, set controls as listed in  
lines D -G of the table below.  
IMPORTANT: If the system does not function properly,  
do not operate the unit until repairs are made.  
KNOW that all hydraulic fluid connections  
are tight and all hydraulic hoses and lines  
are in good condition BEFORE applying  
pressure to system.  
Foreign fluid injected into skin must be  
surgically removed within a few hours by a  
doctor familiar with this form of injury or  
gangrene may result.  
Check the hydraulic fluid level with the dipstick before  
each use (more often if leaks are observed). Stop the  
engine before servicing any hydraulic parts.  
A
B
C
D
E
F
Off  
Off  
Off  
On  
On  
On  
Off  
Off  
On  
Off  
Off  
Won’t Start  
Starts  
Starts  
Runs  
1. Run unit until warm.  
Off  
On*  
Off  
2. Shut off engine.  
Won’t Run  
On/Off  
Off  
3. Unscrew tank cap to remove cap/dipstick.  
NOTE: Do not allow any dirt to get into the system.  
4. Wipe dipstick clean.  
Off**  
Off  
Stops  
Stops  
G
Off  
Off  
Runs  
5. Screw cap/dipstick back into tank.  
* Note: Unit will not start if both operator presence  
control levers are engaged.  
6. Remove cap/dipstick and check hydraulic oil level  
mark.  
** Note: Engine stops if both operator presence control  
levers are released while parking brake is off.  
7. Add hydraulic fluid as needed. Do not overfill. See  
Specifications for hydraulic fluid type.  
CHECK AIR CLEANER  
Check the air cleaner element before each use. See  
engine manual for detailed instructions.  
CHECK BATTERY (988108, 109, 117)  
WARNING: AVOID INJURY. Read and  
understand the entire Safety section before  
proceeding.  
CHECK ENGINE OIL  
Check the engine oil level before each use. Never  
operate the engine when the oil level is low. See engine  
manual for detailed instructions.  
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.  
CHECK ENGINE COOLING  
Check the engine air cooling system before each use.  
See engine manual for detailed instructions.  
CHECK FASTENERS  
Terminals  
Check all nuts, bolts, and other fasteners before each  
use. Replace missing or damaged fasteners.  
Inspect battery and terminals every 25 hours.  
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To clean terminals:  
CHECK FUEL FILTER  
See engine manual for detailed instructions.  
1. Remove battery cover.  
2. Remove battery cables from terminals.  
CHECK SPARK PLUG  
See engine manual for detailed instructions.  
3. Clean or service battery away from unit. Remove  
corrosion from battery terminals and cable  
connections with wire brush, then wash with a  
weak baking soda solution.  
CHECK MUFFLER  
Check muffler for damage or wear. Replace if  
necessary.  
4. Apply a thin coat of dielectric grease or petroleum  
jelly to terminals and cable ends to retard  
corrosion.  
CLEAN AIR CLEANER PAPER ELEMENT  
5. Replace battery and secure with battery cover.  
See engine manual for detailed instructions.  
CHECK ALL BELTS  
Check all belts for wear or damage every 25 hours. If  
belts slip, check for damaged belts or tensioner.  
CHANGE HYDRAULIC FLUID AND FILTER  
Change hydraulic fluid and filter after the first 50 hours  
of operation. They both should be changed every 500  
hours thereafter.  
MOWER BLADES  
To change the filter:  
Check mower blades for wear every 25 hours of  
operation. Ensure blade hardware is tightened to  
115-125 lbf-ft (156-169.5 N•m) of torque.  
1. Place open container under tank. The container  
should be able to hold at least 4 quarts of oil.  
2. Remove tank from frame and allow tank to tip  
rearward to allow oil to drain from system  
(Figure 9).  
CLEAN AIR CLEANER FOAM ELEMENT  
See engine manual for detailed instructions.  
3. After most of the oil has drained, turn the tank  
upside down counterclockwise to allow the rest of  
the oil to drain.  
GENERAL LUBRICATION  
Apply a small amount of oil to the pivot points as  
required for smooth operation (Figure 8).  
4. Clean around filter.  
Apply high quality lithium based grease to all lube  
fittings every 50 hours of operation.  
5. Turn filter counterclockwise to remove.  
6. Fill the oil filter with about 8 oz. (236 ml) of  
NOTE: The mower spindle assembly is maintenance  
free.  
hydraulic oil.  
7. Apply a thin coat of oil onto seal of new filter.  
1
8. Install new filter and hand tighten securely.  
1
2
9. Fill system with about 44 oz. (1.3L) fresh, clean  
hydraulic oil. See Specifications for proper type.  
10. Run-in hydraulic system to bleed and lubricate  
components. See below.  
2
1
1
1. Wheel Bearings  
2. Flange Bushings  
OG1480  
Figure 8  
CHANGE ENGINE OIL  
Open the petcock to drain oil through oil drain hole on  
left side of engine. See engine manual for additional  
instructions.  
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3. Increase engine speed to half. Set speed control  
1/3 forward. Run engine for 3-5 minutes to bleed  
hydraulic motors.  
NOTE: If necessary, start the motors turning by hand.  
4. Shut off engine and lower the unit to the floor.  
IMPORTANT: If any squealing noise occurs in the  
motors, repeat the run-in procedure.  
PUMP ACTUATING LINKAGE (988105, 106,  
107, 108, 109, 113)  
Clean debris from pump actuating linkage to ensure  
smooth operation. Clean rust from sliding pins with fine  
emery cloth and apply a thin coat of oil to lubricate  
(Figure 10).  
Sliding Pin  
Pump  
Figure 9  
Pump Actuating  
Linkage  
Hydraulic Run-In Procedure  
Figure 10  
1. Jack the drive wheels off the floor.  
2. Start unit. Run engine at slowest speed for 1-2  
minutes to bleed hydraulic pumps.  
SERVICE AND ADJUSTMENTS  
If unit turns to the right:  
WARNING: AVOID INJURY. Read and  
understand the entire Safety section before  
proceeding.  
1. Set speed control levers to neutral (see Speed  
Control Neutral Adjustment (988105, 106, 107,  
108, 109, 113, 116, 117, 120) on page 21).  
2. Reduce the air pressure in the left tire.  
3. Increase the air pressure in the right tire.  
ADJUSTING THE UNIT TO TRACK  
STRAIGHT  
4. Adjust the clevis on the right steering control rod  
down the rod.  
Check Forward Tracking  
1. Start engine and run unit at full throttle.  
If unit turns to the left:  
2. Slowly release both steering levers to the full  
outward position (988105, 106, 107, 108, 109,  
113).  
1. Set speed control levers to neutral (see Speed  
Control Neutral Adjustment (988105, 106, 107,  
108, 109, 113, 116, 117, 120) on page 21).  
Slowly push both control levers against the pivot  
bar (988116, 117, 120, 314).  
2. Reduce the air pressure in the right tire.  
3. Increase the air pressure in the left tire.  
3. Note which direction, if any, the unit pulls.  
4. Stop unit and engine.  
4. Adjust the clevis on the left steering control rod  
down the rod.  
5. Adjust tracking if needed.  
Try each of the following steps until the unit tracks  
straight. It may not be necessary to perform all the  
steps.  
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Check Reverse Tracking (988116, 117, 120,  
314)  
PARKING BRAKE ADJUSTMENT  
To check:  
1. Pull back parking brake lever (Figure 12).  
WARNING: Uncontrolled reverse travel can  
result in serious injury.  
Brake arm must contact tire and brake lever must  
press brake switch, and there must be an 1/8"  
(3 mm) gap between the parking brake arm and  
the stop bolt on the unit frame.  
Do not put control levers into the reverse  
position unless you are prepared to operate  
in reverse.  
Tire  
Parking Brake Arm  
1/8" (3 mm)  
1. Adjust forward tracking (See Check Forward  
Tracking on page 20).  
2. Slowly pull both control levers all the way back.  
3. Note which direction, if any, the unit pulls.  
4. Stop unit and engine.  
Stop Bolt  
5. Adjust tracking if needed.  
Figure 12  
OG1470  
If unit turns to the right:  
2. Push lever forward (Figure 13).  
Brake arm must disengage.  
1. Reduce the air pressure in the left tire.  
2. Increase the air pressure in the right tire.  
3. Turn the reverse stop bolt on the right neutral  
adjustment bracket counterclockwise to speed up  
the right wheel.  
Parking Brake Arm  
4. Check reverse tracking and adjust as needed.  
If unit turns to the left:  
Tire  
1. Reduce the air pressure in the right tire.  
2. Increase the air pressure in the left tire.  
OG1470  
Figure 13  
3. Turn the reverse stop bolt on the right neutral  
adjustment bracket clockwise to slow down the  
right wheel.  
To adjust:  
1. Remove clevis from brake arm tab (Figure 14).  
2. Turn clevis up or down the brake rod as needed.  
3. Replace clevis on brake arm tab.  
4. Check reverse tracking and adjust as needed.  
1
1
1. Parking Brake Rod  
2. Clevis  
3. Parking Brake Arm  
2
2
3
Figure 14  
1. Reverse Stop Bolt  
2. Neutral Adjustment Bracket  
SPEED CONTROL NEUTRAL  
ADJUSTMENT (988105, 106, 107, 108, 109,  
113, 116, 117, 120)  
Figure 11  
Check Neutral  
1. Put speed control levers in neutral.  
2. Lock steering control levers in neutral.  
3. Engage parking brake.  
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4. Start engine.  
4. Run engine at full throttle.  
5. Disengage parking brake.  
Check for creep.  
5. Run engine at full throttle.  
6. Disengage parking brake.  
Check for creep.  
NOTE: If unit will not return to neutral, immediately  
have an authorized dealer service or adjust the unit.  
7. Release steering control levers.  
Check for creep.  
STEERING LEVER LATCH ADJUSTMENT  
(988105, 106, 107, 108, 109, 113)  
If unit creeps when parking brake and steering  
levers are released: Adjust steering rod clevis.  
Check Steering Lever Neutral Adjustment  
1. Set speed control levers to neutral.  
2. Shut off engine.  
To adjust (Figure 15):  
1. Stop engine.  
2. Put speed control levers in neutral.  
3. Remove pump actuating spring.  
3. Lock steering lever latches.  
If latches cannot lock steering levers, adjust the  
steering link rod.  
4. Disconnect steering control rod clevis from speed  
control plate.  
Adjust Steering Link Rod  
NOTE: Shut off engine.  
5. Turn clevis on steering control rod to adjust.  
If unit creeps backward, turn clevis down the rod.  
If unit creeps forward, turn clevis up the rod.  
To shorten the steering link rod:  
1. Remove steering link clevis from steering control  
rod (Figure 16).  
6. Replace steering control rod clevis, clevis pin,  
hairpin and pump actuating spring.  
2. Turn clevis up the steering link rod to shorten the  
link.  
7. Check adjustments and repeat steps 1-6 as  
needed.  
3. Replace clevis on steering control rod.  
4. Try to lock steering lever latches.  
8. Once neutral is set, loosen neutral stop bracket  
and slide it against the washer above the steering  
control rod clevis.  
5. Repeat steps 1-3 until latches lock steering  
levers.  
To lengthen the steering link rod:  
1. Lock steering lever latches.  
7
1
2. Remove steering link clevis from steering control  
rod.  
2
3
6
8
3. Turn the clevis down the steering link rod  
lengthen the link.  
4. Replace clevis on steering control rod.  
5. Check for backwards creep.  
6. If unit creeps backwards, adjust steering rod  
4
clevis (see Speed Control Neutral Adjustment).  
5
1. Steering Control Rod  
2. Neutral Stop Bracket  
3. Clevis  
5. Pump Actuating  
Spring  
6. Washer  
7. Flange Nuts  
8. Spring  
4. Speed Control Plate  
OG1361  
Figure 15  
CONTROL LEVER NEUTRAL  
ADJUSTMENT (988116, 117, 120, 314)  
Check Neutral  
1. Put control levers in neutral.  
2. Engage parking brake.  
3. Start engine.  
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Slower Speed  
1. Clevis  
2. Speed Control  
Plate  
3. Pump Actuating  
Spring  
4. Pump Actuating  
Spring Anchor  
1
1
2
2
3
3
4
3
4
5
1. Steering  
Control Lever  
2. Steering Link  
Rod  
3. Jam Nut  
Faster Speed  
4. Steering Link  
Clevis  
1
2
3
5. Steering  
Control Rod  
Figure 16  
OG1370  
SPEED RANGE ADJUSTMENT (988105,  
106, 107, 108, 109, 113)  
The steering levers control travel speed. The unit can  
be adjusted from a slower to a faster speed range.  
4
3
NOTE: Setting the unit to the faster speed range will  
make the steering controls more sensitive.  
Figure 17  
OG1340  
To adjust (Figure 17):  
988116, 117, 120, 314  
NOTE: Setting the unit to the faster speed range will  
1. Stop engine.  
2. Put speed control levers in neutral.  
make the steering controls more sensitive.  
3. Remove pump actuating spring from speed  
control plate.  
To adjust (Figure 18):  
1. Stop engine.  
4. Remove pump actuating spring anchor from  
speed control plate. Keep hardware.  
2. Disconnect clevis from speed control arm.  
3. Remove speed control arm from hydraulic pump.  
5. Remove steering control rod clevis from speed  
control plate.  
NOTE: Save speed control arm and hardware to return  
unit to slower speed range.  
6. Move the steering control rod clevis to the other  
hole in the speed control plate and secure with  
clevis pin and hairpin as shown.  
4. Connect clevis to return to neutral bracket on the  
hydraulic pump with clevis pin and hairpin.  
5. Repeat steps 1 - 4 for the other pump.  
6. Check and adjust tracking as needed.  
7. Install actuating spring anchor in the open hole.  
8. Remove the actuating spring anchor from the  
frame.  
9. Attach the actuating spring anchor to the hole in  
frame as shown.  
10. Replace pump actuating spring.  
11. Tighten the nuts holding the speed control levers  
in place (if necessary).  
12. Repeat procedure on other steering control lever.  
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4. Remove belt from engine sheave and pump  
pulleys.  
1
5. Install new belt on engine sheave and pumps.  
6. Reconnect idler spring to idler.  
Connect clevis  
here for faster  
speed range.  
7. Put mower belt back on mower clutch sheave.  
1
4
2
5
2
3
OG0795  
4
3
1. Mower Clutch  
Sheave  
2. Mower Belt  
4. Hydro Pump Belt  
5. Pump Pulleys  
3. Pump Belt Idler  
Spring  
1. Neutral Bracket  
2. Clevis  
3. Speed Control Arm  
Figure 19  
Figure 18  
CLUTCH ADJUSTMENT  
If clutch fails to engage or disengage properly or  
begins to make abnormal noise, check the air gap  
adjustment at the three inspection slots.  
REMOVE SINGLE LEVER PLATE (988105,  
106, 107, 108, 109, 113)  
Without the single lever plate, the speed control levers  
can work separately to adjust tracking on uneven  
terrain.  
To check:  
1. Stop engine, remove key and wait for all hot parts  
to cool.  
To remove:  
2. Measure the air gap between the armature and  
the rotor.  
1. Remove knobs from speed control levers.  
2. Remove and keep single lever plate.  
3. Remove and keep nuts.  
Minimum: A .005" feeler gauge should slide  
between armature and rotor with slight contact.  
Maximum: A .023" feeler gauge should slide  
between armature and rotor with slight contact.  
4. Apply Loc-Tite 495 (or equivalent) to knob  
threads.  
3. Repeat for each inspection slot.  
To adjust:  
5. Replace knobs on speed control levers.  
REPLACING THE HYDRO PUMP BELT  
1. If necessary, loosen gap adjustment nuts until a  
.005" feeler gauge fits between armature and  
rotor.  
1. Place speed control levers in neutral position  
(988105, 106, 107, 108, 109, 113).  
2. Remove mower belt from mower clutch sheave  
(Figure 19).  
2. Slide a .012" feeler gauge between armature and  
rotor.  
3. Remove pump belt idler spring from eye bolt.  
3. Tighten gap adjustment nut until there is slight  
contact on feeler gauge.  
WARNING: An extension spring, when  
extended, stores energy and can be  
dangerous. Always use tools specifically  
designed for installing or removing an  
extension spring. Always compress or  
extend springs slowly.  
4. Repeat steps 1 – 3 at each inspection slot.  
NOTE: Adjust air gap as evenly as possible.  
5. Start unit, engage and disengage PTO.  
6. Shut off unit.  
7. Recheck air gap and adjust if needed.  
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5. Connect positive (+) lead of charger to  
positive (+) terminal, and negative (–) lead to  
negative (–) terminal.  
6. Charge battery according to charger and battery  
manufacturers’ instructions.  
4
1
3
7. Reinstall battery on unit and connect positive (+)  
2
cable first, then negative (–) cable.  
4
1. Armature  
2. Rotor  
3. Inspection Slot  
4. GapAdjustment  
Nut  
1
3
2
Figure 20  
OG1500  
BATTERY (988108, 109, 117)  
Unit comes equipped with a maintenance-free battery  
that requires no regular maintenance except cleaning  
the terminals. See Check Battery (988108, 109, 117)  
on page 18.  
OF1670  
1. Positive terminal  
2. Negative terminal  
3. Battery  
WARNING: AVOID INJURY. Read and  
understand the entire Safety section before  
proceeding.  
Figure 21  
It may be possible to recharge the battery by jump  
starting the unit and allowing the engine to run.  
Charge Battery  
Jump Start  
WARNING: FROZEN BATTERIES CAN  
EXPLODE and result in death or serious  
injury.  
The unit used for jump starting should have a 12-volt  
battery with at least 500 cold cranking amperes, and a  
negatively grounded system.  
DO NOT charge a frozen battery. Let the  
battery thaw before charging.  
1. Ensure battery is not frozen. If the fluid is frozen,  
remove battery from unit and allow it to thaw  
before charging.  
Battery Electrolyte First Aid  
2. Connect the positive (+) jumper cable to the  
positive terminal of the discharged battery.  
•
External Contact: Flush with water.  
•
Eyes: Flush with water for at least 15 minutes  
and get medical attention immediately!  
3. Connect the other end of the same jumper cable  
to the positive (+) terminal of the booster battery.  
•
Internal Contact: Drink large quantities of water.  
Follow with Milk of Magnesia, beaten egg or  
vegetable oil. Get medical attention immediately!  
DO NOT induce vomiting!  
4. Connect one end of the second jumper cable to  
the negative (–) terminal of the booster battery.  
5. Make the final jumper cable connection to the  
engine block or the furthest ground point away  
from the discharged battery.  
IMPORTANT: DO NOT fast charge. Charging at a  
higher rate will damage or destroy battery.  
IMPORTANT: ONLY use an automatic charger  
designed for use with your battery. ALWAYS follow  
information provided on battery and battery charger.  
Contact battery and charger manufacturers for detailed  
instructions.  
WARNING: Make sure cables are clear of  
any moving engine parts before starting  
engine.  
6. Start engine (See Starting and Shut Off on page  
13). If engine will not start after several tries, unit  
or battery may need service.  
1. Remove battery cover.  
2. Disconnect negative (–) cable first, then positive  
(+) cable (Figure 21).  
7. After engine starts, leave cables connected for  
one to two minutes.  
3. Remove battery.  
4. Place battery on bench or other well-ventilated  
area.  
8. Disconnect cables in reverse order.  
9. Operate unit normally to charge battery.  
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Deck Belt  
36" BELT REPLACEMENT  
NOTE: Mower drive belt must be removed before  
removing the deck belt.  
3
6
3
4
2
5
5
2
2
1
4
1
OG1390  
5
1. Idler Spring  
2. Deck Pulley  
3. Mower Clutch  
Sheave  
4. Belt  
7
OG1395  
8
Figure 22  
1. Mower Drive Belt  
Idler Spring  
2. Mower Drive Belt  
Idler  
3. Mower Drive Belt  
4. Deck Belt  
5. Deck Sheave  
6. Mower Clutch  
Sheave  
7. Deck Belt Idler  
Spring  
8. Deck Belt Idler  
1. Stop engine, remove key and wait for all hot parts  
to cool.  
2. Set deck to the fourth cutting height.  
3. Remove deck cover.  
Figure 23  
4. Remove deck idler spring.  
5. Remove belt from deck pulleys and mower clutch  
sheave.  
1. Stop engine, remove key and wait for all hot parts  
to cool.  
6. Install new belt.  
2. Remove the deck belt idler spring from the spring  
anchor.  
7. Replace idler spring.  
8. Replace deck cover and secure.  
3. Remove deck belt from deck sheaves.  
4. Install new deck belt.  
NOTE: Make sure the wing knobs do not interfere with  
cutting height adjustments.  
5. Replace deck idler spring to tension belt.  
6. Replace mower drive belt.  
44", 48" AND 52" BELT REPLACEMENT  
Mower Drive Belt  
7. Replace deck cover.  
1. Stop engine, remove key and wait for all hot parts  
to cool.  
2. Set deck to the fourth cutting height.  
3. Remove deck cover.  
4. Remove mower drive belt idler spring (Figure 23).  
5. Remove mower drive belt from deck sheaves and  
mower clutch sheave.  
6. Install new mower drive belt on deck sheaves and  
mower clutch sheave.  
7. Replace mower drive belt idler spring to tension  
belt.  
8. Replace deck cover and secure.  
NOTE: Make sure wing knobs do not interfere with cut-  
ting height adjustments.  
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Replace  
MOWER BLADES  
1. Put the blades, flat washers, lock washers, and  
NOTE: If mower is used under sandy soil conditions,  
replace blades when air lifts become eroded through at  
ends (Figure 24).  
the bolts back on the spindle shafts.  
2. Tighten the bolts to a torque of 115-125 lbf-ft  
(156-169.5 N•m).  
DO NOT sharpen to this pattern  
3. Replace ignition wire on spark plugs.  
Sharpen the Mower Blades  
Figure 24.  
CAUTION: DO NOT sharpen mower blades  
while on unit. An unbalanced mower blade  
will cause excessive vibration and eventual  
damage to unit. Check mower blade balance  
before reinstalling blades.  
NEVER weld or straighten bent blades.  
Sharpen to this pattern  
1
1. Remove mower blade from unit.  
Discard mower blade if:  
•
•
•
More than 1/2 in. (1.27 cm) of metal is removed.  
Air lifts become eroded.  
Blade is bent or broken.  
2. Sharpen mower blade by removing an equal  
amount of material from each end of mower  
blade. DO NOT change angle of cutting edge or  
round the corner of the mower blade.  
OT0792  
DISCARD if more  
than 1/2 in. (1.27 cm)  
2
3. Check mower blade balance.  
Slide mower blade on an unthreaded bolt. A  
balanced blade should remain in a horizontal  
position. If either end of mower blade moves  
downward, sharpen the heavy end until blade is  
balanced.  
1. Cutting Edge  
2. Air Lift Erosion  
Figure 24  
Remove  
4. Install mower blade(s) on unit (See Mower Blades  
on page 27).  
CAUTION: Use sturdy gloves or padding to  
protect hands when working with mower  
blades.  
1. Turn the engine off. Remove the ignition key.  
Remove the ignition wire from the spark plugs.  
2. Remove the bolts, lock washer, flat washers, and  
blades from the spindle shafts.  
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STORAGE  
NOTE: Clean unit thoroughly with mild soap and low  
WARNING: AVOID INJURY. Read and  
understand the entire Safety section before  
proceeding.  
pressure water and lubricate (see Maintenance).Touch  
up all scratched painted surfaces. Do not allow gaso-  
line or oil to remain on any decals.  
Engine  
Storage – Two Months or More  
Refer to the engine manual to prepare the engine for  
storage.  
Check each item in the Maintenance Schedule on page  
17, but do not add gasoline.  
Battery  
Clean the unit. Touch up all scratched painted surfaces.  
Remove battery and store in a cool, dry place.  
IMPORTANT: Never spray unit with high-pressure  
water or store unit outdoors. Store unit in a cool, dry,  
protected location.  
TROUBLESHOOTING  
PROBLEM  
PROBABLE CAUSE  
CORRECTION  
Engine will not  
start  
1. Safety Interlock System is  
preventing start.  
1. The engine will not start unless the speed  
control levers are in neutral, the key is in the  
Run position, the parking brake is On and the  
Power Take Off (PTO) is Off .  
The engine will not start unless the key is in  
the On position , the parking brake is On and  
the Power Take Off (PTO) is Off (988116, 117,  
120, 314).  
2. Fuel tank is empty or fuel is  
contaminated.  
2. Add fuel. If necessary, replace the fuel with  
clean, fresh fuel.  
3. Air cleaner is clogged or  
damaged.  
3. Clean or replace the filter element. See engine  
manual.  
4. Safety Interlock System out of  
adjustment or defective.  
4. See your Dealer for repairs.  
5. Dirty or damaged spark plug.  
5. See Engine Manual.  
1. Close bypass valves.  
Unit will not  
1. Bypass valves left open.  
move or mow  
when the engine  
is running  
2. Hydro pump belt or mower belt  
is broken, worn, or off the  
pulleys.  
2. Check belts for wear, damage and correct  
position on pulleys. Replace belts if worn or  
damaged. See Replacing the Hydro Pump Belt  
on page 24.  
3. Cold Start Disengage is  
engaged.  
3. Disengage Cold Start Disengage.  
4. Disengage parking brake.  
4. Parking brake is engaged.  
Changes in the  
sound or  
vibrations of the  
unit  
1. Loose or missing fasteners.  
2. Mower blade problem.  
1. Check all the fasteners. Replace if necessary.  
2. Check blades for wear or damage. See Mower  
Blades on page 27.  
3. Worn or damaged clutch.  
3. See your Dealer for repairs.  
GB - 28  
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PROBLEM  
PROBABLE CAUSE  
CORRECTION  
Unit pulls  
1. Rust on the clutch sliding pin.  
1. Clean heavy rust deposits from the pin. See  
sharply to the  
left or right when  
the speed  
control levers  
are quickly  
Service and Adjustments.  
2. Binding in the pump actuating  
linkage.  
2. Check linkage for debris or damage. Repair if  
necessary. See Service and Adjustments or  
your Dealer for repairs.  
3. Steering levers out of  
adjustment.  
3. See Speed Control Neutral Adjustment  
(988105, 106, 107, 108, 109, 113, 116, 117,  
120) on page 21.  
moved all the  
way forward  
Unit does not  
straighten  
immediately  
when the  
steering levers  
are released  
Unit loses power  
1. Binding in the steering or  
parking brake linkage.  
1. Check linkage for debris or damage. Repair if  
necessary. See Parking Brake Adjustment on  
page 21 or your Dealer for repairs.  
2. Steering levers out of  
adjustment.  
2. See Speed Control Neutral Adjustment  
(988105, 106, 107, 108, 109, 113, 116, 117,  
120) on page 21.  
ACCESSORIES  
Description  
SERVICE PARTS  
Qty Description  
Part No.  
Part No.  
78803300  
78805300  
78803400  
78803500  
78803700  
78805400  
78803800  
78803900  
78803600  
78804000  
78804100  
78804300  
78804400  
78805000  
78805100  
78804900  
36" Mulching Kit  
21538000  
21538100  
21538200  
21538300  
21538400  
21535800  
21533600  
04919100  
1
1
1
1
1
1
2
1
Paper Element (15 HP)  
44" Mulching Kit  
Foam Precleaner (15 HP)  
Paper Element (17 HP)  
Foam Precleaner (17 HP)  
Fuel Filter  
48" Mulching Kit  
52" Mulching Kit  
36" Bahia/Tall Grass Baffle Kit  
44" Bahia/Tall Grass Baffle Kit  
48" Bahia/Tall Grass Baffle Kit  
52" Bahia/Tall Grass Baffle Kit  
36" Lawn Striping Kit  
36" Double Blade Kit  
44" and 48" Double Blade Kit  
Grass Catcher  
Oil Filter  
Spark Plug  
Mower Blade - 16.25" (988106, 107,  
108, 113, 116)  
04916400  
1
Mower Blade - 18.00" (988105, 109,  
117, 120)  
04905300  
07240100  
07240300  
07240200  
07202900  
07222300  
07240300  
07239700  
1
1
1
1
1
1
1
1
Mower Blade - 36" Tungsten (988314)  
Mower Drive Belt - 36" Deck  
Mower Drive Belt - 44" Deck  
Mower Drive Belt - 48" Deck  
Mower Deck Belt - 44" and 48" Deck  
Mower Drive Belt - 52" Deck  
Mower Deck Belt - 52" Deck  
Hydro Belt  
Leaf Collector**  
Single Wheel Sulky**  
Two Wheel Sulky**  
Speed Control Kit* (988105, 106, 107, 108,  
109, 113)  
* Available in CE countries.  
** NOT approved for 52-inch models. DO NOT use on  
52-inch models due to hillside parking limits.  
GB - 29  
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SPECIFICATIONS  
Model Number  
Description  
988105  
988106  
988107  
988108  
988109  
HR1536FX  
HR1548FX  
73.5 (186.70)  
HR1548FL  
HE1748FL  
77 (195.60)  
HE1752FL  
Length – in. (cm)  
Height – in. (cm)  
Width – in. (cm)  
79.75 (202.50)  
42 (106.7)  
38.2 (97)  
50.6 (128.5)  
52.4 (133.1)  
702 (319)  
Actual Weight –  
575 (260.8)  
625 (284)  
690 (313.6)  
lbs (kg)  
Battery  
Brakes  
N/A  
12V 255 CCA  
Hydrostatic-Dynamic  
0
Turning Radius–  
in. (cm)  
Tire Size  
18 x 8.50-8 4 Ply Rating  
Engine –  
Kawasaki FH430V-BS06  
Kawasaki FH500V-BS35  
Manufacturer  
Cycle  
4
Horsepower – HP  
(KW) @ 3600 RPM  
15 (11.2)  
Recoil  
17 (12.7)  
Electric  
Starting System  
Fuel Tank Cap.  
Fuel  
6.6 U.S. gal. (25 L)  
See Engine Manual  
3500 50  
Governed R.P.M.  
(max.)  
Crank Case Cap.  
Air Cleaner  
See Engine Manual  
Foam Precleaner  
Hydrostatic  
Transmission  
Speed– Forward  
Max.  
0 – 6.3 MPH (0 – 10.1 km/hr) (Low)  
0 – 8.5 MPH (0 – 13.7 km/hr) (High)  
0 – 2.3 MPH (0 – 3.7 km/hr) (Low)  
0 – 3.7 MPH (0 – 5.9 km/hr) (High)  
Mobil 15W-50 API  
– Reverse Max.  
Transmission Lube  
Tire Pressure  
Deck  
8 to 16 psi (55 to 110 kPa)  
Cutting Width–  
35.25 (89.5)  
47.25 (120)  
52.50 (133.4)  
in. (cm)  
Cutting Height –  
1- 4 (2.54 - 10)  
in. (cm)  
Deck Construction  
Discharge  
7-gauge steel with 7-gauge spindle reinforcement  
Right Side  
CE Sound and  
Vibration  
Oper. Ear Sound  
Pressure (L ) in  
pa  
dB  
N/A  
A
Vibration Measure  
2
(m/s ) @ Operator  
Hands  
X
Y
Z
N/A  
N/A  
N/A  
GB - 30  
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SPECIFICATIONS  
Model Number  
Description  
988113  
HR1544FX  
75.5 (191.77)  
42 (106.7)  
988116  
988117  
988120  
988314  
HR1548FLP  
HE1752FLP  
HR1536FXP  
HR1536FXPCE  
Length – in. (cm)  
Height – in. (cm)  
Width – in. (cm)  
77.5 (196.78)  
84.25 (214.0)  
43.5 (110.5)  
47 (119.38)  
625 (284.1)  
50.6 (128.5)  
644 (292.6)  
52.4 (133.1)  
721 (327.6)  
38.2 (97)  
Actual Weight –  
594 (269.4)  
lbs (kg)  
Battery  
Brakes  
N/A  
12V 255 CCA  
Hydrostatic-Dynamic  
0
N/A  
Turning Radius–  
in. (cm)  
Tire Size  
18 x 8.50-8 4 Ply Rating  
Kawasaki  
Engine –  
Kawasaki  
Kawasaki  
Kawasaki  
Manufacturer  
FH430V-BS06  
FH500V-BS35  
4
FH430V-BS06  
FH430V-BS06  
Cycle  
Horsepower – HP  
(KW) @ 3600 RPM  
15 (11.2)  
Recoil  
17 (12.7)  
15 (11.2)  
15 (11.2)  
Starting System  
Fuel Tank Cap.  
Fuel  
Electric  
Recoil  
6.6 U.S. gal. (25 L)  
See Engine Manual  
Governed R.P.M.  
(max.)  
3500 50  
2750 50  
Crank Case Cap.  
Air Cleaner  
See Engine Manual  
Foam Precleaner  
Hydrostatic  
Transmission  
Speed– Forward  
Max. MPH (km/hr)  
0 – 6.3 (0 – 10.1) (Low)  
0 - 4.9 (0 - 8.2) (Low)  
0- 6.7 (0-11.2) (High)  
0 -1.8 (0- 3.0) (Low)  
0-2.9 (0-4.8) (High)  
0 – 8.5 (0 – 13.7) (High)  
0 – 2.3 (0 – 3.7) (Low)  
0 – 3.7 (0 – 5.9) (High)  
– Reverse Max.  
MPH (km/hr  
Transmission Lube  
Tire Pressure  
Mobil 15W-50 API  
8 to 16 psi (55 to 110 kp )  
a
Deck  
Cutting Width –  
44.0 (111.8)  
47.25 (120)  
52.5 (133.4)  
35.25 (89.5)  
35.25 (89.5)  
in. (cm)  
Cutting Height –  
1- 4 (2.54 - 10)  
in. (cm)  
Deck Construction  
Discharge  
7-gauge steel with 7-gauge spindle reinforcement  
Right Side  
CE Sound and  
Vibration  
Oper. Ear Sound  
N/A  
87  
Pressure (L ) in  
pa  
dB  
A
Vibration Measure  
2
(m/s ) @ Operator  
Hands  
X
Y
Z
N/A  
N/A  
N/A  
<2.5  
2.8  
<2.5  
GB - 31  
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2-Year Limited Warranty  
Gravely Division of Ariens Company (Gravely) hereby warrants to the  
original consumer purchaser that all Gravely Two-Wheel,  
Professional G, Pro, and ProMaster products will be free from defects  
in material and workmanship for a period of two (2) years from the date  
of purchase or 1000 hours, whichever comes first.  
Gravely Division of Ariens Company  
655 West Ryan Street  
P.O. Box 157  
Brillion, WI 54110-0157  
920-756-2141  
Fax 920-756-2407  
Protection Plan  
Gravely will repair or replace any part found upon examination by  
Gravely to be defective. Such repair or replacement will be free of  
charge to the purchaser (labor and parts), except as noted below.  
www.gravely.com  
This warranty is subject to the following exceptions, conditions, and limitations:  
Usage Requirement  
The duration of this warranty shall be ninety days or 1000 hours, whichever comes first, if the product is rented or leased.  
Purchaser’s Responsibilities  
Exclusions (No Warranty)  
• The purchaser must perform maintenance and minor  
adjustments per the operator’s manual.  
• The purchaser must notify Gravely or an authorized Gravely  
service representative of the need for warranty service.  
• The purchaser must transport the product to and from the place  
of warranty repair.  
• Normal maintenance, services, and normal replacement items,  
such as spark plugs, oil, oil filters, air filters, mufflers, belts,  
tires, shoes, runners, scraper blades, shear bolts, mower blades,  
mower vanes, headlights, light bulbs, knives, etc. are not covered  
by this warranty.  
• Any equipment which has been altered, misused, misassembled,  
improperly adjusted, neglected, or damaged by accident is not  
covered by this warranty.  
Product Registration  
• Returning the product registration card to Gravely will enable  
the company to contact the registrant with repair or replacement  
part information.  
• Service completed by someone other than an authorized  
Gravely dealer is not covered by this warranty.  
• Any attachment not approved by Gravely nor any parts that  
are not genuine Gravely service parts 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.  
• If the product is equipped with a Hydro-Gear transmission  
and/or Hydro-Gear drive components, the Hydro-Gear  
transmission and/or drive components are covered only by the  
warranty made by Hydro-Gear, and are not covered by this  
warranty.  
• This warranty applies only to products purchased in the United  
States (including Puerto Rico) and Canada. In all other  
countries, contact place of purchase.  
Service Parts and Accessories  
• Service parts and accessories not purchased with the product  
covered by this warranty are warranted to be free of defects  
for a period of ninety (90) days following the date of purchase,  
and will be replaced free of charge (except for labor).  
Service  
• Warranty service must be done by an authorized Gravely dealer.  
To find an authorized Gravely service representative, contact  
Gravely at the website, number or address above.  
Battery Warranty Prorated  
• One to three months - Free replacement  
• Four to twelve months - Prorated over 12 months  
Gravely may from time to time change the design of its products. Nothing contained in this warranty shall be construed as obligating  
Gravely to incorporate such design changes into previously manufactured products, nor shall such changes be construed as an admission  
that previous designs were defective.  
LIMITATION OF REMEDY AND DAMAGES  
Gravely’s liability under this express warranty, and under any implied  
Gravely makes no warranty other than what is  
warranty that may exist, is limited to repair or replacement of any  
DISCLAIMER OF FURTHER WARRANTY  
expressly made in this warranty. If the law of your  
defective part. In no event shall Gravely be liable for incidental,  
state provides that an implied warranty of  
merchantability, or an implied warranty of fitness  
for a particular purpose, applies to Gravely, any  
such implied warranty is limited to the duration of  
this express warranty.  
special, or consequential damages (including lost profits). This  
warranty gives you specific legal rights.You may also have other  
rights which vary from state to state. Some states do not allow the  
exclusion of incidental or consequential damages, or limitations on  
how long an implied warranty lasts, so the above limitations and  
exclusions may not apply to you.  
Form: GLW2-122002  
GB - 32  
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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  
www.gravely.com  
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