Gravely 988150-32GR Owner's manual

ENGLISH
04263400 12/10
Printed in USA
ENGLISH
FRANÇAIS
Owner/Operator Manual
Manuel Du Propriétaire/Utilisateur
Models
988150 – 32GR
988151 – 36GR
988152 – 48GR
Pro-Walk Gear
Gasoline containing up to 10% ethanol (E10) or up to 10% MTBE (methyl tertiary butyl ether) is
acceptable for use in this machine.
The use of any gasoline exceeding 10% ethanol (E10) or 10% MTBE will void the product warranty.

GB - 2
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Assembly . . . . . . . . . . . . . . . . . . . . . . . 11
Controls and Features. . . . . . . . . . . . . 12
Operation . . . . . . . . . . . . . . . . . . . . . . . 13
Maintenance Schedule . . . . . . . . . . . . 19
Service and Adjustments . . . . . . . . . . 20
Storage . . . . . . . . . . . . . . . . . . . . . . . . . 27
Accessories . . . . . . . . . . . . . . . . . . . . . 27
Service Parts . . . . . . . . . . . . . . . . . . . . 27
Troubleshooting. . . . . . . . . . . . . . . . . . 28
Specifications . . . . . . . . . . . . . . . . . . . 29
Warranty . . . . . . . . . . . . . . . . . . . . . . . 30
NON-ENGLISH MANUALS
Manuals in languages other than
English may be obtained from
your Dealer. Visit your dealer or
www.gravely.com for a list of
languages available for your
equipment.
Manuals printed in languages
other than English are also available as a free
download on our website:
http://www.gravely.com
MANUALES EN IDIOMAS
DIFERENTES DEL INGLES
Puede obtener manuales en
idiomas diferentes del inglés en su
distribuidor. Visite a su distribuidor
o vaya a www.gravely.com para
obtener una lista de idiomas
disponibles para su equipo.
También puede imprimir manuales
en idiomas diferentes del inglés
descargándolos gratuitamente de nuestra
página Web:
http://www.gravely.com
MANUELS NON ANGLAIS
Des manuels dans différentes
langues sont disponibles chez
votre revendeur. Rendez-vous
chez votre revendeur ou allez sur
le site www.gravely.com pour
consulter la liste des langues
disponibles pour votre
équipement.
Les manuels imprimés dans des langues
différentes de l’anglais sont également
disponibles en téléchargement gratuit sur
notre site Web :
http://www.gravely.com
THE MANUAL
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.
All reference to left, right, front, or rear are
given from operator standing in operation
position and facing the direction of forward
travel.
ENGINE MANUAL
The engine on this unit is covered by a
separate manual specific to the engine. This
manual is included in the literature package
that shipped with the unit. Refer to this
manual for engine service recommendations.
If the engine manual is not available, contact
the engine manufacturer for a replacement
manual.
MODEL AND SERIAL NUMBERS
When ordering replacement parts 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.
TABLE OF CONTENTS
INTRODUCTION

GB - 3
• Record Unit Model and Serial
numbers here.
• Record Engine Model and Serial
numbers here.
PRODUCT REGISTRATION
The Gravely dealer must register the product
at the time of purchase. Registering the
product will help the company process
warranty claims or contact you with 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.
Customer Note: If the Dealer does not
register your product, please fill out, sign and
return the product registration card to
Gravely.
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, go to www.Gravely.com on
the internet.
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.
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 13.)
3. Fill out Original Purchaser Registration
Card and return the card to Gravely.
4. Explain Limited Warranty Policy.
5. Explain recommended lubrication and
maintenance. Advise customer on
adjustments.
6. Instruct customer on controls and
operation of unit. Discuss and
emphasize the Safety Precautions. Give
customer Owner/Operator, Parts, and
Engine Manuals. Advise customer to
thoroughly read and understand them.
Unit Serial Number
Label
Figure 1
Engine Serial
Number Label

GB - 4
SAFETY ALERTS
Look for these symbols to point
out important safety precautions.
They mean:
Attention!
Personal Safety Is
Involved!
Become Alert!
Obey The Message!
The safety alert symbols above and signal
words below are used on decals and in this
manual.
Read and understand all safety messages.
NOTATIONS
NOTE: General reference information for
proper operation and maintenance practices.
IMPORTANT: Specific procedures or
information required to prevent damage to
unit or attachment.
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.
REQUIRED OPERATOR
TRAINING
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
WARNING: This cutting machine
is capable of amputating hands
and feet and throwing objects.
Failure to observe the safety
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.
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.
Disengage attachment, stop unit
and engine, remove key, engage
parking brake, and allow moving
parts to stop before leaving
operator’s position.
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.
CAUTION: POTENTIALLY
HAZARDOUS SITUATION! If not
avoided, MAY RESULT in minor or
moderate injury. It may also be used
to alert against unsafe practices.

GB - 5
SAFETY DECALS AND
LOCATIONS
ALWAYS replace missing or damaged Safety
Decals. Refer to figure below for Safety Decal
locations.
1. Danger! To avoid serious injury or
death
2. Danger! Rotating Blades
Shut off engine and allow to cool before
refueling.
Never fill fuel tank indoors. Do Not overfill.
Wipe up spilled fuel before starting engine.
Do Not smoke while refueling.
Apague el motor y deje que se enfríe por
completo.
Nunca llene el depósito de combustible
cuando el motor esté en marcha o caliente
o la unidad esté en un recinto cerrado. No
llene en exceso el depósito de combustible.
Limpie el combustible derramado
inmediatamente.
No fume mientras maneja el combustible.
07700022
Figure 2
4
3
1
2
Read the operator’s manual.
Keep children and others away
from unit while operating.
OL1801
OL4370
Never direct discharge toward
other people. Thrown objects can
cause injury.
• Keep safety devices (guards, shields,
switches, etc.) in place and working.
• Check interlock system per manual
before use.
• Never allow operation by untrained
persons.
• When parking on a slope always
chock or block the wheels.
• Disengage PTO, stop unit and
engine, set parking brake and
remove key before making any
inspections, repairs, etc.
ROTATING BLADE! Keep
hands and feet away.
OL3030

GB - 6
3. Warning!
(
4. Danger!
EMISSION CONTROL SYSTEM
This equipment and/or its engine may include
exhaust and evaporative emissions control
system components required to meet U.S.
Environmental Protection Agency (EPA)
and/or California Air Resources Board
(CARB) regulations. Tampering with
emission controls and components by
unauthorized personnel may result in severe
fines or penalties. Emission controls and
components can only be adjusted by an
Ariens Company dealer or an authorized
engine manufacturer's service center.
Contact your Ariens Company Equipment
Retailer concerning emission controls and
component questions.
SAFETY RULES
Operator Training Required
• Read the operator’s manual and other
training material. If the operator or
mechanic cannot read English, it is the
owner’s responsibility to explain this
material to them. This publication is
available in other languages.
• Become familiar with the safe
operation of the equipment, operator
controls, and safety signs.
• All operators and mechanics should
be trained. The owner of the machine
is responsible for training the users.
• Never let children or untrained people
operate or service the equipment.
Local regulations may restrict the age
of the operator.
• The owner/user can prevent and is
responsible for accidents or injuries
occurring to themselves, other people,
or property.
• Operate the machine in an open,
unobstructed area under the direction
of an experienced operator.
Preparation
• Evaluate the terrain to determine what
accessories and attachments are
needed to properly and safely perform
the job. Only use accessories and
attachments approved by the
manufacturer.
• Wear appropriate clothing including
hard hat, safety glasses and hearing
protection. Long hair, loose clothing or
jewelry may get tangled in moving
parts.
• Inspect the area where the equipment
is to be used and remove all objects
such as rocks, toys and wire which
can be thrown by the machine.
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.
Keep people and pets away
when operating unit. Keep
children out of the work area
and under the watchful care of
a responsible adult.
Shut off engine, remove key,
read manual before you
unplug, adjust or repair unit.
NO STEP! Always keep feet
away from rotating parts.
Always stand clear of discharge.
DO NOT operate mower unless
guards are in operating position
or bagger is attached.
Stay clear of rotating parts.
OL0910
OL4370
OL4010
OL4420
OL0910
OL3320
OL5100

GB - 7
• Use extra care when handling
gasoline and other fuels. They are
flammable and vapors are explosive.
a. Use only an approved container.
b. Never remove gas cap or add
fuel when engine is running. Do
not smoke.
c. Never refuel or drain the
machine indoors.
• Check that the operator presence
control levers, safety switches and
shields are attached and functioning
properly. Do not operate unless they
are functioning properly.
Operating Safely
• Never run an engine in an enclosed
area where dangerous carbon
monoxide fumes can collect.
• Only operate in good light, keeping
away from holes and hidden hazards.
• Be sure all drives are in neutral and
parking brake is engaged before
starting engine. Only start engine from
the operator’s position.
• Be sure of your footing while using
pedestrian-controlled equipment,
especially when backing up. Walk,
don’t run. Never operate on wet grass.
Reduced footing could cause slipping.
• Slow down and use extra care on
hillsides. Be sure to travel in the
recommended direction on hillsides.
For this machine, drive across
hillsides, not up and down. Turf
conditions can affect the machine’s
stability. Use caution while operating
near drop-offs.
• Slow down and use caution when
making turns and when changing
directions on slopes.
• Never raise deck with the blades
running.
• Never operate with guards not
securely in place. Be sure all
interlocks are attached, adjusted
properly, and functioning properly.
• Never operate with the discharge
deflector raised, removed or altered,
unless using a grasscatcher. Do not
operate mower without discharge
chute or entire grasscatcher in place.
• Do not change the engine governor
setting or overspeed the engine.
Operating the engine at excessive
speed can increase the hazard of
personal injury.
• Stop on level ground, disengage
drives, engage parking brake, and
shut off engine before leaving the
operator’s position for any reason
including emptying the grasscatchers
or unclogging the chute.
• Stop equipment and inspect blades
after striking objects or if an abnormal
vibration occurs. Make necessary
repairs before resuming operations.
• Keep hands and feet away from the
cutting units.
• Look behind and down before backing
up to be sure of a clear path.
• Never carry passengers and keep pets
and bystanders away.
• Slow down and use caution when
making turns and crossing roads and
sidewalks. Stop blades if not mowing.
Watch for traffic when operating near
or crossing roadways.
• Be aware of the mower discharge
direction and do not point it at anyone.
• Do not operate the machine while
under the influence of alcohol or
drugs.
• Use care when loading or unloading
the machine into or off of a trailer or
truck.
• Use care when approaching blind
corners, shrubs, trees, or other objects
that may obscure vision.
• Inspect machine before you operate.
Be sure hardware is tight. Repair or
replace damaged, badly worn, or
missing parts. Be sure guards and
shields are in good condition and
fastened in place. Make any
necessary adjustments before you
operate.
• Before using, always visually inspect
to see that the blades, blade bolts and
the mower assembly are not worn and
damaged. Replace worn and
damaged blades and bolts in sets to
preserve balance.
• Keep safety labels visible when
installing accessories and
attachments.
• Do not wear radio or music
headphones. Safe service and
operation require your full attention.
• Be sure all drives are in neutral and
parking brake is locked before starting
engine. Stand as far away from the
discharge chute as possible with feet
well away from the underside of the
deck to start machine.
• Do not hang or secure any item to the
control console. The operator’s station
should always remain unobstructed.
• Do not pull mower backwards while
the blades are rotating. Use the
reverse gear to move the machine in
reverse.

GB - 8
Checking Mowing Area
• Clear mowing area of objects that
might be thrown. Keep people and
pets out of mowing area.
• Low-hanging branches and similar
obstacles can injure the operator or
interfere with mowing operation.
Before mowing, identify potential
obstacles such as low-hanging
branches, and trim or remove those
obstacles.
• Study mowing area. Set up a safe
mowing pattern. Do not mow where
traction or stability is doubtful.
Parking Safely
1. Stop machine on a level surface, not on
a slope.
2. Disengage mower blades.
3. Lock the park brake.
4. Stop the engine.
5. Remove the key.
6. Wait for engine and all moving parts to
stop before you leave the operator’s
station.
7. Close fuel shut-off valve, if your machine
is equipped.
8. Remove the spark plug wire before
servicing the machine.
Operating Safely on Slopes
• Slopes are a major factor related to
slip and fall accidents which can result
in severe injury. Operation on all
slopes requires extra caution. If you
feel uneasy on a slope, do not mow it.
• Mow across the face of slope, never
up and down. Use extreme caution
when changing direction on slopes.
• Keep all movement on slopes slow
and gradual. Do not make sudden
changes in speed or direction.
• Watch for holes, ruts, bumps, rocks or
other hidden objects. Uneven terrain
could cause a slip and fall accident.
Tall grass can hide obstacles.
• Do not mow on wet grass or
excessively steep slopes. Poor footing
could cause a slip and fall accident.
• Do not mow near drop-offs, ditches,
embankments, as well as ponds and
other bodies of water. The operator
could lose footing or balance. The
machine could suddenly turn over if a
wheel is over the edge of a cliff or
ditch, or if an edge caves in.
• Follow the manufacturer’s
recommendations for counterweights
for added stability when operating on
slopes. Remove weights when not
required.
• Use extra care with grasscatchers.
These can change the stability of the
machine. Do not use grasscatcher on
steep slopes.
Rotating Blades are Dangerous
HELP PREVENT SERIOUS OR FATAL
ACCIDENTS:
• Rotating blades can cut off arms and
legs, and throw objects. Failure to
observe safety instructions could
result in serious injury or death.
• Keep hands, feet and clothing away
from mower deck when engine is
running.
• Be alert at all times, drive forward
carefully. People, especially children
can move quickly into the mowing
area before you know it.
• Before backing up, stop mower blades
or attachments and look down and
behind the machine carefully,
especially for children.
• Do not mow in reverse.
• Shut off blades when you are not
mowing.
• Park machine safely before leaving
the operator’s station for any reason
including emptying the catchers or
unplugging the chute.
Rotating Blades are Dangerous -
Protect Children and Prevent
Accidents
Protect Children:
• Tragic accidents can occur if the
operator is not alert to the presence of
children. Children are often attracted
to lawn-mowing machines and
mowing activity. Stay alert to the
presence of children. Never assume
that children will remain where you last
saw them.
• Keep children indoors, out of the
mowing area, and in the watchful eye
of a responsible adult, other than the
operator, when a mower is being
operated.
• Be alert and turn mower off if a child
enters the work area. They don’t
understand the dangers of rotating
blades or the fact that the operator is
unaware of their presence.
• Never allow a child or an untrained
person to operate the machine.
• Use extra care when approaching
blind corners, shrubs, trees, or other
objects that may block your view of a
child.

GB - 9
Checking Wheel Hardware
• A serious accident could occur
causing serious injury if wheel
hardware is not tight.
• Check wheel hardware tightness often
during the first 100 hours of operation.
• Wheel hardware must be tightened to
specified torque using the proper
procedure anytime it is loosened.
Wear Appropriate Clothing
• Always wear safety goggles, or safety
glasses with side shields, and a hard
hat when operating the machine.
• Wear close fitting clothing and safety
equipment appropriate for the job.
• While mowing, always wear
substantial footwear and long
trousers. Do not operate the
equipment when barefoot or wearing
open sandals.
• Wear a suitable protective device such
as earplugs. Loud noise can cause
impairment or loss of hearing.
Maintenance and Storage
• Never operate machine in a closed
area where dangerous carbon
monoxide fumes can collect.
• Disengage drives, lower implement,
lock parking brake, stop engine and
remove key or disconnect spark plug
(for gas engines). Wait for all
movement to stop before adjusting,
cleaning or repairing.
• Clean grass and debris from cutting
units, drives, mufflers, and engine to
help prevent fires. Clean up oil or fuel
spillage.
• Let engine cool before storing and do
not store near flame.
• Shut off fuel while storing or
transporting. Do not store fuel near
flames or drain indoors.
• Park machine on level ground. Never
allow untrained personnel to service
machine. Understand service
procedure before doing work.
• Use jack stands or lock service latches
to support components when required.
Securely support any machine
elements that must be raised for
service work.
• Before servicing machine or
attachment, carefully release pressure
from any components with stored
energy, such as hydraulic components
or springs.
• Release hydraulic pressure by
lowering attachment or cutting units to
the ground or to a mechanical stop
and move hydraulic control levers
back and forth.
• Disconnect battery or remove spark
plug (for gas engines) before making
any repairs. Disconnect the negative
terminal first and the positive last.
Reconnect positive first and negative
last.
• Use care when checking blades. Wrap
the blades or wear gloves, and use
caution when servicing them. Only
replace blades. Never straighten or
weld them.
• Keep hands, feet, clothing, jewelry and
long hair away from moving parts. If
possible, do not make adjustments
with the engine running.
• Charge batteries in an open well
ventilated area, away from spark and
flames. Unplug charger before
connecting or disconnecting from
battery. Wear protective clothing and
use insulated tools.
• Keep all parts in good working
condition and all hardware tightened.
Replace all worn or damaged decals.
• Check grasscatcher components and
the discharge guard frequently and
replace with manufacturer’s
recommended parts, when necessary.
Grasscatcher components are subject
to wear, damage, and deterioration
which could expose moving parts or
allow objects to be thrown.
• Keep all nuts and bolts tight, especially
blade attachment bolts, to be sure the
equipment is in safe working condition.
• Check brake operation frequently.
Adjust and service as required.
• On multi-bladed machines, take care
as rotating one blade can cause other
blades to rotate.
Avoid High Pressure Fluids
• Hydraulic hoses and lines can fail due
to physical damage, kinks, age, and
exposure. Check hoses and lines
regularly. Replace damaged hoses
and lines.
• Hydraulic fluid connections can loosen
due to physical damage and vibration.
Check connections regularly. Tighten
loose connections.
• Escaping fluid under pressure can
penetrate the skin causing serious
injury. Avoid the hazard by relieving
pressure before disconnecting
hydraulic or other lines. Tighten all
connections before applying pressure.
• Search for leaks with a piece of
cardboard. Protect hands and body
from high pressure fluids.

GB - 10
• If an accident occurs, see a doctor
immediately. Any fluid injected into the
skin must be surgically removed within
a few hours or gangrene may result.
Doctors unfamiliar with this type of
injury should reference a
knowledgeable medical source.
Prevent Fires
• Machine fires and structure fires can
occur if a machine is stored before
allowing it to cool, or if debris is not
removed from around the engine and
muffler, or if stored near combustible
materials.
• Remove grass and debris from engine
compartment and muffler area, before
and after operating machine,
especially after mowing or mulching in
dry conditions.
• Empty the grasscatcher completely
before storing. Always shut off fuel
when storing or transporting machine,
if the machine has a fuel shutoff.
• Do not store machine near an open
flame or source of ignition, such as a
water heater or furnace.
• Check fuel lines, tank, cap, and fittings
frequently for cracks or leaks. Replace
if necessary.
Tire Safety
Explosive separation of a tire and rim parts
can cause serious injury or death:
• Do not attempt to mount a tire without
the proper equipment and experience
to perform the job.
• Always maintain the correct tire
pressure. Do not inflate the tires above
the recommended pressure. Never
weld or heat a wheel and tire
assembly. The heat can cause an
increase in air pressure resulting in a
tire explosion. Welding can structurally
weaken or deform the wheel.
• When inflating tires, use a clip-on
chuck and extension hose long
enough to allow you to stand to one
side and NOT in front of or over the
tire assembly.
• Check tires for low pressure, cuts,
bubbles, damaged rims or missing lug
bolts and nuts.
Handling Fuel Safely
To avoid personal injury or property damage,
use extreme care in handling fuel. Fuel is
extremely flammable and fuel vapors are
explosive:
• Extinguish all cigarettes, cigars, pipes,
and other sources of ignition.
• Use only an approved fuel container.
Use only non-metal, portable fuel
containers approved by the
Underwriter’s Laboratory (U.L.) or the
American Society for Testing &
Materials (ASTM). If using a funnel,
make sure it is plastic and has no
screen or filter.
• Never remove the fuel tank cap or add
fuel with the engine running. Allow
engine to cool before refueling.
• Never add fuel to or drain fuel from the
machine indoors. Move machine
outdoors and provide adequate
ventilation.
• Clean up spilled fuel immediately. If
fuel is spilled on clothing, change
clothing immediately. If fuel is spilled
near machine, do not attempt to start
the engine but move the machine
away from the area of spillage. Avoid
creating any source of ignition until
fuel vapors have dissipated.
• Never store the machine or fuel
container where there is an open
flame, spark, or pilot light such as on a
water heater or other appliance.
• Prevent fire and explosion caused by
static electric discharge. Static electric
discharge can ignite fuel vapors in an
ungrounded fuel container.
• 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
fueling.
• Remove fuel-powered equipment from
the truck or trailer and refuel it on the
ground. If this is not possible, then
refuel such equipment with a portable
container, rather than from a fuel
dispenser nozzle.
• Keep the nozzle in contact with the rim
of the fuel tank or container opening at
all times until the fueling is complete.
Do not use a nozzle lock-open device.
• Never overfill fuel tank. Replace fuel
tank cap and tighten securely.
• Replace all fuel container caps
securely after use.
• For gasoline engines, do not use gas
with methanol. Methanol is harmful to
your health and to the environment.
Fuel is highly flammable and its vapors are
explosive. Handle with care. Use only an
approved gasoline container with an
appropriately sized dispensing spout.
Properly remove fuel before tipping unit.
•

GB - 11
Handling Waste Product and
Chemicals
Waste products, such as, used oil, fuel,
coolant, brake fluid, and batteries, can harm
the environment and people:
• Do not use beverage containers for
waste fluids - someone may drink from
them.
• See your local Recycling Center or
authorized dealer to learn how to
recycle or get rid of waste products.
• A Material Safety Data Sheet (MSDS)
provides specific details on chemical
products: physical and health hazards,
safety procedures, and emergency
response techniques. The seller of the
chemical products used with your
machine is responsible for providing
the MSDS for that product.
1. Remove the unit from shipping
container.
2. Adjust tire pressure to 8 to 16 psi (55 to
110 kPa).
3. Check the adjustments outlined in
Service & Adjustments.
4. Check engine oil level. See engine
manual.
5. Add clean fuel to the fuel tank. See
engine manual for type and grade. DO
NOT OVERFILL! See FILLING FUEL
TANK on page 14.
6. Check for loose hardware.
7. Be sure that safety interlock system
operates correctly. See Check Safety
Interlock System on page 13.
8. Be sure that unit tracks straight.
Unit must not pull sharply to the left or
right when the steering levers are
released. See TRACKING
ADJUSTMENT on page 20.
ASSEMBLY
WARNING: AVOID INJURY. Read
and understand the entire Safety
section before proceeding.
CAUTION: Avoid injury! Explosive
separation of tire and rim parts is
possible when they are serviced
incorrectly:
• Do not attempt to mount a tire
without the proper equipment
and experience to perform the
job.
• Do not inflate the tires above
the recommended pressure.
• Do not weld or heat a wheel
and tire assembly. Heat can
cause an increase in air
pressure resulting in an
explosion. Welding can
structurally weaken or deform
the wheel.
• Do not stand in front or over
the tire assembly when
inflating. Use a clip-on chuck
and extension hose long
enough to allow you to stand
to one side.

GB - 12
1. Shift Lever
2. Steering Lever Latches
3. Steering Levers
4. Throttle Lever
5. Ignition Switch
6. PTO Switch
7. Operator Presence Controls
8. Fuel Cap
9. Recoil Starter Handle
10. Traction Belt Guard
11. Choke Control
CONTROLS AND FEATURES
Figure 3
1
2
3
7
746
11
8
9
10
5

GB - 13
CONTROLS AND FEATURES
See Figure 3 for controls and features
locations.
SAFETY INTERLOCK SYSTEM
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.
The engine will only start with the PTO
disengaged. The shift lever must be in neutral
for engine to start.
Engine must not start unless PTO is
disengaged and the shift lever is in neutral.
To tes t:
1. With engine off, engage PTO.
2. Turn ignition switch to On. Pull recoil
start handle. Engine must not start.
3. Disengage PTO.
The engine MUST stop whenever the
operator removes both hands from controls
while the PTO or transmission is engaged. To
test:
1. Start engine and engage PTO.
2. Release operator presence control
lever(s). Engine must stop.
3. Disengage PTO.
4. Restart engine.
5. Place shift lever in Forward.
6. Release operator presence control lever.
Engine must stop.
Operator Presence Control
The operator presence control lever must be
pressed to operate the PTO or traction drive.
When the shift lever or PTO is engaged,
releasing the operator presence control lever
stops the engine.
Steering Levers
The steering levers are used to steer, operate
in forward and reverse, and stop the unit.
When held against the handlebar, the brakes
are engaged.
Steering Lever Latches
The steering lever latches hold the steering
levers in the neutral position and keep the
brakes applied.
Ignition Switch
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 key
to Off (1).
Throttle Lever
The throttle lever changes the
speed of the engine. Move the
throttle lever to Fast (1) to
increase engine speed. Move
the lever to Slow (2) to
decrease engine speed.
OPERATION
WARNING: AVOID INJURY. Read
and understand the entire Safety
section before proceeding.
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 13 for testing
instructions.
CAUTION: AVOID INJURY. Operate
only when operator presence control
is functioning correctly. See Check
Safety Interlock System on page 13
for testing instructions.
WARNING: AVOID INJURY. When
the engine is running and the shift
lever is engaged, releasing only one
steering latch causes the unit to
circle around one drive wheel.
ALWAYS hold both steering levers
against the handlebar when
releasing the steering lever latches.
ALWAYS release levers slowly.
OF1212
OG1180
1
2

GB - 14
Choke Control
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.
Shift Lever
The shift lever sets the direction and speed of
the unit.
R = reverse
N = neutral
1 = the slowest forward speed
5 = the fastest forward speed.
PTO Clutch
Pull the PTO (power take
off) switch On (1) to
engage the mower blades.
Push the PTO switch Off
(2) to disengage the
mower blades.
Recoil Starter Handle
Pull the recoil starter handle to start the
engine.
FILLING FUEL TANK
To add fuel to the fuel tank:
1. Clean fuel cap and surrounding area to
prevent dust, dirt, and debris from
entering fuel tank.
2. Remove fuel cap.
IMPORTANT: Refer to Engine Manual for
correct type and grade of fuel.
3. Fill fuel tank to the bottom of filler neck.
See SPECIFICATIONS on page 29 for
fuel tank capacity.
IMPORTANT: DO NOT OVERFILL! This
equipment and/or its engine may include
evaporative emissions control system
components, required to meet EPA and/or
CARB regulations, that will only function
properly when the fuel tank has been filled to
the recommended level. Overfilling may
cause permanent damage to evaporative
emissions control system components. Filling
to the recommended level ensures a vapor
gap required to allow for fuel expansion. Pay
close attention while filling the fuel tank to
ensure that the recommended fuel level
inside the tank is not exceeded. Use a
portable gasoline container with an
appropriately sized dispensing spout when
filling the tank. Do not use a funnel or other
device that obstructs the view of the tank
filling process.
4. Replace fuel cap and tighten.
5. ALWAYS clean up spilled fuel.
GASOLINE
IMPORTANT: ALWAYS use gasoline that
meets the following guidelines:
• Clean, fresh gasoline.
• A minimum of 87 octane/87 AKI (91
RON). High altitude use may require a
different octane. Consult your engine
manual.
• Gasoline with up to 10% ethanol
(gasohol) or up to 10% MTBE (methyl
tertiary butyl ether) is acceptable.
• Use of any gasoline other than those
approved above will void the engine
warranty. If the pumps are not marked
for the content of alcohol or ethers,
check ethanol and MTBE levels with
the fuel supplier.
• Do not modify the fuel system to use
different fuels.
• Never mix oil and gasoline.
TO STOP IN AN EMERGENCY
1. Release operator presence control(s).
2. Turn the ignition key Off.
3. Allow engine to stop completely.
4. Lock steering levers in neutral.
STARTING AND SHUT OFF
Before Each Use
Check each item in Each Use in the
Maintenance Schedule.
NOTE: The engine will not start unless the
shift lever is in neutral, and the Power Take
Off (PTO) is Off.
Recoil Start
1. Lock the steering lever latches in
neutral.
2. Put the shift lever in neutral.
OG1190
Figure 4
OE0260
1
2

GB - 15
3. Move PTO switch to Off.
4. Set throttle to the proper starting
position. If the engine is cold, choke the
engine.
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.
7. Let the rope rewind slowly.
8. Pull rope with rapid continuous full arm
stroke to start engine. Allow rope to
rewind slowly.
IMPORTANT: DO NOT let starter handle
snap against engine.
9. Repeat until engine starts. (If engine
does not start, refer to Engine Manual.)
10. After engine starts, adjust choke as
needed. Allow engine to warm and run
smoothly before operating unit.
Shut Off
1. Lock steering levers in neutral.
2. Shut off the PTO.
3. Move the throttle lever to Slow.
4. Put the shift lever in neutral.
5. Turn the ignition key Off.
6. Allow engine to stop completely.
TO OPERATE UNIT
Operate the unit only in the operator’s
position directly behind the handlebars.
To shift unit:
1. Stop unit movement by pulling both
steering levers all the way up.
2. You can move the shift lever one of two
ways:
A. Continue to hold up both steering
levers and use your knee to move the
shift lever to the desired position.
B. Lock both steering levers. Move the
shift lever to the desired position. Hold
the steering levers up as you unlock
them.
3. Release both steering levers slowly.
To operate:
1. Start the engine (See STARTING AND
SHUT OFF on page 14).
2. Move the throttle lever to the Fast
position.
3. Engage the operator presence control
and move shift lever to desired direction
and speed.
4. Hold steering levers against the
handlebar and release steering latch
levers.
• To move straight forward; slowly
release both steering levers to the full
outward position.
• To stop unit in neutral, hold levers in
the neutral position.
• To lock unit in neutral, engage both
steering latches.
• To turn to the left, pull the left hand
lever up.
• To turn to the right, pull the right hand
lever up.
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.
WARNING: AVOID INJURY. When
the engine is running and the shift
lever is engaged, releasing only one
steering latch causes the unit to
circle around one drive wheel.
ALWAYS hold both steering levers
against the handlebar when
releasing the steering lever latches.
ALWAYS release levers slowly.
OG1410
OG1420
OG1430
OG1440
OG1450

GB - 16
To move in reverse:
1. Hold the steering levers against the
handlebar.
2. Engage steering lever latches.
3. Engage the operator presence control
and move shift lever to Reverse.
4. Release steering levers slowly.
To mow:
1. Lock steering levers in neutral.
2. Put the shift lever in neutral.
3. Move the throttle lever to the fast
position.
4. Engage the operator presence control
lever.
NOTE: Operator presence control must
remain engaged.
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.
6. Move the shift lever to set a slow ground
speed.
7. Hold steering levers against the
handlebar and release the lock 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:
1. Lock the steering levers in neutral.
2. Keep one hand on the operator
presence control and move the shift
lever to the neutral position.
3. Move the throttle lever to 1/2 speed.
4. Turn off PTO switch.
CUTTING HEIGHT ADJUSTMENT
Cutting height can be adjusted from 1-1/2 – 4
in. (38 – 108 mm) using the height of cut
(HOC) rods and washers supplied with the
unit.
NOTE: If necessary, up to an additional 3/4
in. (19 mm) of cutting height can be obtained.
See Additional Cutting Height on page 17.
Holes in the height of cut (HOC) rods are
used to adjust the cut height. The holes are
spaced at 1/2 in. (12 mm) increments. In
addition, spacers are added or removed to
allow cut height adjustments in 1/4 in. (6 mm)
increments. Grab handles (A) for adjusting
height are located on both sides of the deck.
HOC spacers (B) are stored on the deck in
front of the spindles (see Figure 5). To use,
remove hex bolts retaining HOC spacers and
remove spacers. Replace hex bolts to store.
To adjust cut height (Figure 6):
1. Using the grab handle, raise the deck
until the desired hole in the HOC rod (C)
is above the top of the frame and washer
(F).
2. Insert the hair pin (D) in the hole and set
deck back down. Insert hair pins from
the outside facing inward.
NOTE: Ensure that washer is positioned
between hair pin and frame.
3. To raise cut height by 1/4 in. (6 mm),
insert HOC spacer (B) between hair pin
and washer.
4. Repeat for three remaining HOC rods.
WARNING: Uncontrolled reverse
travel can result in serious injury.
Do not put shift lever into the reverse
position unless you are prepared to
operate in reverse.
WARNING: ALWAYS block wheels,
engage parking brake and know all
jack stands are strong, secure and
will hold weight of unit during
maintenance.
Figure 5
A
B

GB - 17
ADDITIONAL CUTTING HEIGHT
When the deck is adjusted to its highest level,
up to an additional 3/4 in. (18 mm) of cutting
height can be gained by removing one, two or
three blade spacers (G) from each blade
(Figure 7).
Each blade spacer is 1/4 in. (6 mm). If two or
three spacers are removed, shorter blade
bolts (H) must be used (Figure 8). The
shorter blade bolts for this application are
mounted on top of the deck in front of the
spindles and retain the HOC spacers when
not in use.
CAUTION: Do not add or remove blade
spacers to change cut heights within the
normal deck cut height range. Blade spacers
are only removed to achieve cutting heights
greater than 4 in. (102 mm).
To gain additional cut height:
C
D
B
E
Figure 6
1
2
3
4
5
6
HOC Rod Position
HOC Rod
Hair Pin
Position
Cut Height
Inch (mm)
Washer
1 1/5 (38) No
1.75 (44) Yes
2 2.0 (51) No
2.25 (57) Yes
3 2.5 (64) No
2.75 (70 Yes
4 3.0 (76) No
3.25 (90) Yes
5 3.5 (90) No
3.75 (95) Yes
6 4.0 (102) No
WARNING: 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.
Figure 7
G
Figure 8
H

GB - 18
1. Set deck to maximum cut height. See
CUTTING HEIGHT ADJUSTMENT on
page 16.
2. Remove blades. See Replace Mower
Blades on page 25.
3. Remove or add spacers to achieve the
desired cutting height.
IMPORTANT: Ensure that all mower blades
are mounted with the same number of
spacers.
ADJUSTING DECK HEIGHT -
FIXED/FLOAT OPTION
To raise or lower the deck height, remove the
hair pins (I) and place in the appropriate
holes on the height-of-cut pins (2) to achieve
desired deck height (Figure 9). For fixed
deck operation, place hair pins directly below
the frame to eliminate vertical travel of the
deck during operation. For floating deck
operation, hair pins should be placed in the
lowest hole location below the frame. Make
sure hair pins are located in the same holes
at all deck mounting locations. Always store
the hair pins on the height-of-cut pins.
PARKING
1. Shut off the unit. See Shut Off on
page 15.
2. Remove the key.
3. Lock both steering lever latches in
neutral to engage the brakes.
4. Chock or block the wheels if parked on a
slope.
TO PUSH UNIT BY HAND
To move the unit without the engine running:
1. Put the shift lever in neutral.
2. Disengage the lock latches. Release
steering levers. The brake is disengaged
when the steering levers are released.
3. Push unit to desired location.
IMPORTANT: Towing the unit will damage
transmission.
TO TRANSPORT UNIT
Transporting Machine on a Trailer
Use a heavy-duty trailer to transport your
machine. Trailer
must have signs and lights required by law.
IMPORTANT: Avoid damage! Transporting a
machine on a trailer or on a truck bed at high
speeds can result in hood or engine cover
raising and possibly coming off machine if not
secured.
• Position machine on trailer so hood or
engine cover opens from rear of trailer
to prevent wind from blowing hood or
cover open.
• Secure hood or engine cover with
existing machine locks or latches.
• Secure hood or engine cover with tie
down straps if no locks or latches
exist.
1. Drive machine onto a trailer.
2. Engage brake lever locks.
3. Place transmission in NEUTRAL.
4. Shut engine off.
5. Remove key.
6. Fasten machine to trailer with heavy-
duty straps, chains or cables. Both front
and rear straps must be directed down
and outward from machine.
Desired Cut
Height
In. (mm)
Number of
Spacers on
Spindle
Blade
Bolt
4.75 (120) 0 Short
4.50 (114) 1 Short
4.25 (108) 2 Standard
4.00 (103) 3 Standard
Figure 9
I
22
CAUTION: Avoid injury! Use extra
care when loading or unloading the
machine into a trailer or truck.
Close fuel shut-off valve, if your
machine is equipped.

GB - 19
* Change oil after first 8 hours of operation and every 100 hours thereafter.
MAINTENANCE SCHEDULE
Period Service Task
Each
Use
Check Safety Interlock
System
WARNING: Safety interlock system failure and
improper operation of unit can result in death or
serious injury. Test this system each time the unit
is operated. If this system does not function as
described, do not operate until repairs are made. See
Check Safety Interlock System on page 13.
Check Air Cleaner Check the air cleaner element before each use. See
engine manual for detailed instructions.
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.
Check Engine Cooling Check the engine air cooling system before each use. See
engine manual for detailed instructions.
Check Fasteners Check all nuts, bolts, and other fasteners before each use.
Replace missing or damaged fasteners.
Check Tire Pressure Check tires for proper inflation, excessive wear or damage
before each use. The correct air pressure is 8 – 16 psi (55
– 110 kPa).
Follow Engine Manual
Maintenance Schedule
Perform scheduled engine maintenance. See engine
manual for detailed instructions.
Every 25
Hours
Check All Belts Check all belts for wear or damage. If belts slip, check for
damaged belt tensioner.
Mower Blades Check mower blades for wear. Sharpen or replace as
needed. See MOWER BLADES on page 24.
Clean Air Cleaner
Foam Element
See engine manual for detailed instructions.
Every 50
Hours
General Lubrication Oil all pivot points and pin connections. Grease lube
fittings. See GENERAL LUBRICATION on page 20.
Every
100
Hours
Change Engine Oil*Open the petcock to drain oil through oil drain hose on the
right side of engine. See engine manual for additional
instructions.
Check Fuel Filter See engine manual for detailed instructions.
Check Spark Plug See engine manual for detailed instructions.
Check Muffler Check muffler for damage or wear. Replace if necessary.
Clean Air Cleaner
Paper Element
See engine manual for detailed instructions.

GB - 20
GENERAL LUBRICATION
Apply a small amount of oil to the pivot points
as required for smooth operation (Figure 10).
Apply high quality lithium based grease to all
lube fittings every 50 hours of operation
(spindle bearings every 160 hours).
TRACKING ADJUSTMENT
Check Forward Tracking
1. Start engine and run unit at full throttle.
2. Shift into a forward gear and slowly
release both steering levers to the full
outward position.
3. Note to which direction, if any, the unit
pulls.
4. Stop unit and engine.
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.
If unit turns to the right:
1. Reduce the air pressure in the left tire.
2. Increase the air pressure in the right tire.
3. Check for brake binding on right wheel
and adjust as needed.
If unit turns to the left:
1. Reduce the air pressure in the right tire.
2. Increase the air pressure in the left tire.
3. Check for brake binding on left wheel
and adjust as needed.
ADJUST STEERING LEVERS
For each lever:
1. Turn off the engine, remove the key and
allow unit to cool.
2. Release steering or control levers
(Figure 11).
3. Shift transmission into neutral. Operate
steering or control lever several times.
Do not move unit.
4. Remove the hair pin and disconnect the
trunnion from the wheel clutch
weldment.
5. Adjust the trunnion on the steering
control rod until the gap between the
ends of the steering lever and handlebar
grip is 3 – 3 1/4 in. (7.62 – 8.26 cm).
6. Connect trunnion to wheel clutch
weldment and secure with hair pin.
7. Repeat for other steering lever.
SERVICE AND ADJUSTMENTS
WARNING: AVOID INJURY. Read
and understand the entire Safety
section before proceeding.
Figure 10
1. Half Shafts
2. Wheel Bearings
3. Spindle Bearings
4. Caster Pivots
OG1485
23
1
2
4
NOTE: 32-Inch Deck Shown.