Gravely HR1536FL Owner's manual

ENGLISH
03990200A 2/10
Printed in USA
ENGLISH
FRANÇAIS
Owner/Operator Manual
Manuel Du Propriétaire/Utilisateur
Models
988146 – HR1536FL
988147 – HE1948FL
988148 – HE1952FL
Pro-Walk Hydro
Serial numbers 401 and higher.
Numéros de série 401 et supérieur.

GB - 2
SAFETY. . . . . . . . . . . . . . . . . . . . . . . . . . 4
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . 9
OPERATION . . . . . . . . . . . . . . . . . . . . . 10
CONTROLS AND FEATURES . . . . . . . 11
MAINTENANCE . . . . . . . . . . . . . . . . . . 17
TROUBLESHOOTING . . . . . . . . . . . . . 34
STORAGE. . . . . . . . . . . . . . . . . . . . . . . 38
SERVICE PARTS . . . . . . . . . . . . . . . . . 38
SPECIFICATIONS. . . . . . . . . . . . . . . . . 39
WARRANTY . . . . . . . . . . . . . . . . . . . . . 40
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
DANGER: 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 manufacturer is responsible for
all engine-related issues with regards to
performance, power rating, specifications,
warranty and service. Please refer to the
engine manufacturer’s owner’s/operator’s
manual, packed separately with your unit.
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
or go to www.gravely.com on the Internet.
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 Test Operator Presence Safety
Interlock System on page 12.)
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 Model and
Serial Number
Label
Figure 1
Engine Model
and 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 Decals and Locations
ALWAYS replace missing or damaged Safety
Decals. Refer to Figures 2 and 3 for Safety
Decal locations.
SAFETY
WARNING: This cutting unit 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
1. Danger! To avoid serious injury or
death
2. Danger! Rotating Blades
3. Warning!
Read the operator’s manual.
Keep children and others away
from unit while operating.
Never direct discharge toward
other people. Thrown objects can
cause injury.
Figure 2 2
32
3
988147, 148
988146
Figure 3
14
• 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
engage parking brake.
• 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.
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.
OL3030
OL0910
OL4370
OL4010
OL4420
OL0910
OL3320

GB - 6
4. WARNING!
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.
ALWAYS remove key (if equipped) and
disconnect wire from spark plug before
assembly. Unintentional engine start up can
cause death or serious injury.
Complete a walk around inspection of unit
and work area to understand:
• Work area
• Your unit
• All safety decals
ALWAYS check overhead and side
clearances carefully before operation.
ALWAYS be aware of traffic when operating
along streets or curbs.
Keep children and people away.
Keep children out of work area and under
watchful care of a responsible adult.
Keep area of operation clear of all toys, pets,
and debris. Thrown objects can cause injury.
Check for weak spots on docks, ramps or
floors. Avoid uneven work areas and rough
terrain.
ALWAYS be sure of your footing. Keep a firm
hold on handlebar. Walk, NEVER run.
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 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.
• Only trained adults may operate or
service unit
• Training includes actual operation
NEVER allow children to operate or play on
or near unit.
Be alert and shut off unit if children enter
area.
Never carry passengers.
NEVER operate unit after or during the use of
medication, drugs or alcohol. Safe operation
requires your complete and unimpaired
attention at all times.
NEVER allow anyone to operate this unit
when their alertness or coordination is
impaired.
Wear adequate safety gear, protective gloves
and footwear.
NEVER wear open sandals or canvas shoes
during operation.
Protect eyes, face and head from objects that
may be thrown from unit. Wear appropriate
hearing protection.
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.
ALWAYS keep hands and feet away from all
rotating parts during operation. Rotating parts
can cut off body parts.
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.
NEVER place your hands or any part of your
body or clothing inside or near any moving
part while unit is running.
DO NOT wear loose clothing or jewelry. Tie
back hair that may get caught in rotating
parts.
Keep children and people away from unit
during operation.
Fumes from engine exhaust can cause injury
or death.
DO NOT run engine in an enclosed area.
Always provide good ventilation.
Thrown objects can cause injury and property
damage. DO NOT point discharge at anyone
or discharge directly onto paved or gravel
surfaces.
Always stand clear of the discharge area
when operating this unit.
Read, understand, and follow all instructions
in the manual and on the machine before
starting. Understand:
• How to operate all controls
• The functions of all controls
• How to STOP in an Emergency
• Braking and steering characteristics
• Turning radius and clearance
To avoid injury from tipover, drive
across slopes, not up and down. If
machine stops going uphill, stop
blades and back down slowly.

GB - 7
ALWAYS keep protective structures, guards,
and panels in good repair, in place and
securely fastened.
NEVER modify or remove safety devices.
ALWAYS keep discharge cover or complete
grass catcher in place and in proper working
condition.
Check steering control operation frequently.
Adjust and service as required.
Always hold on to safety bar while operating.
Safety Interlock System must function
properly. DO NOT operate unit if operator
presence control is damaged or disabled.
If you strike an object, or if equipment
vibrates 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.
Before starting engine: disengage PTO,
engage parking brake and place unit in
neutral.
DO NOT operate at too fast a rate. DO NOT
change engine governor settings or over-
speed engine. Slow down and turn corners
slowly.
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.
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.
When engine is running and speed control
lever is forward, holding only one steering
lever will cause unit to circle around one drive
wheel.
Use care when approaching blind corners,
shrubs, trees or other objects that may
obscure view.
ALWAYS disengage PTO, stop unit and
engine, set parking brake, remove key and
allow moving parts to stop before clearing
clogs or cleaning unit.
Never leave a running unit unattended.
ALWAYS shut off engine before leaving unit.
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.
DO NOT operate on steep slopes. DO NOT
operate on slopes of more than 15°. Operate
across the face of slopes, not up and down.
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.
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.
Secure unit chassis to transport vehicle.
NEVER secure from rods or linkages that
could be damaged.
DO NOT transport machine while engine is
running.
Keep unit free of grass, leaves, or other
debris. Clean up oil or fuel spills.
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.
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.
NEVER fill fuel tank when engine is running
or hot from operation.
NEVER fill or drain fuel tank indoors.
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.
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.
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.
If fuel is spilled on clothing, change clothing
immediately.
NEVER store fuel inside where there is an
open flame, such as a water heater.

GB - 8
Avoid Electric Shock. Objects contacting both
battery terminals at the same time may result
in injury and unit damage. DO NOT reverse
battery connections.
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.
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.
No flames, No sparks, No smoking near
battery.
ALWAYS wear safety glasses and protective
gear near battery. Use insulated tools.
DO NOT TIP battery beyond a 45° angle in
any direction.
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.
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.
Explosive Gases! No flames, No sparks, No
smoking near battery.
ALWAYS wear safety glasses and protective
gear near battery.
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 and allow moving
parts to stop.
ALWAYS keep body and hands away from
pin holes or nozzles which eject hydraulic
fluid under pressure.
Allow hot parts to cool.
ALWAYS block wheels, engage parking brake
and know all jack stands are strong, secure
and will hold weight of unit during
maintenance.
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.
ALWAYS maintain unit in safe operating
condition. Damaged or worn out muffler can
cause fire or explosion.
Keep hardware, especially blade attachment
bolts, tight.
Maintain or replace safety and instruction
labels, as necessary.
For unit storage or extended storage:
• NEVER store with fuel in fuel tank,
inside a building where any ignition
sources are present.
• Allow engine to cool completely.
Use only attachments or accessories
designed for your unit and that can be used
safely on your terrain.
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.
Use extra care with grass catchers and other
attachments. These can change the stability
of the unit. Use only approved hitch points.
ALWAYS be aware of attachments when
turning. ALWAYS allow adequate clearance
between attachments, personnel, and other
objects.

GB - 9
Check Engine Oil Level
1. Remove dipstick from tube by
unscrewing it. Wipe it clean.
2. Install dipstick and allow the cap to rest
on the end of the tube. Do not tighten
the cap.
3. Remove dipstick. Check oil level on
dipstick; oil level should be between the
ADD and FULL marks.
• If oil is low, add oil to bring oil level no
higher than the FULL mark on dipstick.
• If oil level is above the FULL mark,
drain to proper level.
4. Install and tighten dipstick.
Install Discharge Chute
Remove the thumbscrew (A) retaining the
discharge chute in the transport position.
Place the discharge chute in the operating
position and fasten in place with thumbscrew.
Check Tire Pressure
1. Check tires for damage.
2. Check rear tire pressure with an
accurate gauge. Add air if necessary.
See SPECIFICATIONS on page 39 for
tire pressure.
Lubricate Unit
Lubricate all moving parts before operating
the unit. See Lubrication Points on page 18.
Check Mower Deck Level
The mower deck is assembled and adjusted
at the factory. After unit is completely
assembled, check the mower front-to-rear
and side-to-side deck level.
Check Safety System
Check the operation of the safety interlock
system. See Test Operator Presence Safety
Interlock System on page 12.
ASSEMBLY
Figure 4
A
Transport
Position
Operating
Position
A
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 - 10
DAILY OPERATING CHECKLIST
Remove mower deck belt shields.
Clean grass and debris from belt
area.
Remove grass and debris from
machine and mower deck.
Make sure all necessary guards and
shields are safely and securely
attached. Check for loose, missing,
or damaged parts.
Test parking brake.
Test safety systems.
Inspect for oil leaks.
Check engine and hydraulic oil
levels.
Inspect all belts for damage or
cracking.
Inspect engine air filter.
Inspect mower level.
Adjust cutting height if necessary.
Inspect wheel bolt torque. Tighten if
necessary.
Check tire air pressure. Check tires
for damage or cracking.
Inspect front caster spindles/wheels.
OPERATION

GB - 11
1. Throttle Lever
2. Choke Control
3. Fuel Fill
4. Hydraulic Oil Reservoir Fill
5. Power Take Off (PTO) Switch
6. Ignition Switch
7. Control Height Knob (2 used)
8. Right Control Lever
9. Speed Control/Safety Bar
10. Left Control/Operator Presence Lever
11. Speed Control Adjustment Lock
12. Battery (988147, 148)
13. Parking Brake
14. Deck Lift Handle
15. Anti-Scalp Wheels
16. Height of Cut Rod and Hair Pins
CONTROLS AND FEATURES
Figure 5
1
3
4
5
6
7
8
9
10
11
15
14
12
2
13
16
13

GB - 12
Ignition Switch Operate the ignition
switch with the
removable key.
988147, 148: The
switch has three
positions: STOP (1),
Run (2) and Start (3)
988146: The switch
has two positions:
STOP (1) and Run
(2).
IMPORTANT: Avoid damage. Starter may be
damaged if starter is operated for more than
20 seconds at a time. Wait two minutes
before trying again if engine does not start.
Choke Control Knob
Pull the choke knob out
to start a cold engine.
Push the choke knob in
when the engine gets
warm.
Throttle Lever
Changes the speed of engine.
Fast (1) –
Increases
engine speed.
Half Throttle –
Place in this
position when
starting and
warming unit.
Slow (2) –
Decreases
engine speed.
Power Take Off (PTO) Switch
Engages (1) and
disengages (2)
mower blades.
Pull PTO switch
out to engage
mower blades.
Push PTO switch
in to stop mower
blades.
TEST SAFETY SYSTEMS
The safety systems installed on your unit
should be checked before each use. Read
the operator manual and be completely
familiar with the operation of the unit before
performing these checks.
Use the following procedures to check for
normal operation. If there is a malfunction
during one of these procedures, do not
operate unit. See dealer for service.
Perform tests in a clear open area with no
bystanders.
Test Operator Presence Safety
Interlock System
1. Start engine.
2. Unlock parking brake.
3. Move throttle to mid-open position.
4. Move left control lever in to engage the
operator presence switch.
5. Move PTO/clutch switch to ON position.
Result: Mower deck should engage.
1. Release left control lever to disengage
the operator presence safety switch.
Result: The mower deck MUST stop.
Test PTO/Clutch Safety Switch
1. Engage parking brake.
2. Move the control levers to the neutral
position and release the left control
lever.
3. Move the PTO/clutch switch to the ON
position.
1
2
3
2
1
1
2
CAUTION: Avoid injury! Engine
exhaust fumes contain carbon
monoxide and can cause serious
illness or death.
Move the unit to an outside area
before running the engine.
Do not run an engine in an enclosed
area without adequate ventilation.
• Connect a pipe extension to
the engine exhaust pipe to
direct the exhaust fumes out
of the area.
Allow fresh outside air into the work
area to clear the exhaust fumes out.
CAUTION: Avoid injury! Keep
bystanders away. The mower will
engage as soon as the left control
lever is moved in.

GB - 13
4. Turn the key to the ON position. Turn
ignition key to the START position and
release (988147, 148) or pull recoil
starter (988146).
Result: The engine must not start.
Test Parking Brake Switch
1. Engage parking brake.
2. Move the control levers to the neutral
position and release the left control
lever.
3. Move the parking brake lever to the OFF
position.
4. Turn the key to the ON position. Turn
ignition key to the START position and
release (988147, 148) or pull recoil
starter (988146).
Result: The engine must not start.
5. Re-engage the parking brake.
6. Start unit.
7. Engage the operator presence lever.
8. Push forward on right-side control lever.
Result: The engine should begin to stall until
control lever is released.
Using the Parking Brake
1. To lock brake, move the brake lever fully
back until it locks in place.
2. To unlock, push the lever fully forward.
Testing the Parking Brake
Stop the unit on a maximum 15° slope. Stop
the engine and engage the parking brake.
Result: Parking brake must hold the unit
stationary. If the unit moves more than 24-In
(61 cm) in one hour, brake needs to be
adjusted. See Adjusting Parking Brake on
page 31.
Starting Engine
1. Adjust the safety bar halfway back and
tighten the left side lever for moderate
mowing speed.
2. Engage parking brake.
3. Move PTO/clutch switch to OFF
position.
4. Move throttle lever to half-speed
position.
5. Adjust choke as required.
988147, 148: Turn the key to the START
position and then release the key to the
RUN position when the engine starts.
988146: Turn the key switch to the run
position. Pull recoil starter until the
engine starts
IMPORTANT: Excessive engine idling can
cause engine overheating and carbon build-
up leading to engine damage and poor
performance.
6. Let the engine run at half-speed position
for several minutes to warm up, before
operating the unit. Open choke setting
as the engine warms up.
Stopping Engine
1. Move the throttle lever to the slow idle
position, and let the engine run at that
speed for a few seconds.
2. Turn the key switch to the STOP
position.
3. Remove key.
4. Engage parking brake.
Operating the Unit
1. Adjust mower deck to desired cutting
height. See Adjusting Control Handle
Height on page 14.
2. Start and warm up engine.
3. Release parking brake.
4. Move throttle lever to fast idle.
5. Move PTO/clutch switch to ON position.
6. Move the left control lever in to engage
the operator presence safety switch.
7. Grasp safety bar.
8. Drive the unit.
NOTE: The travel speed and turn rate will
vary with the amount that the control levers
are moved.
Driving the Unit
(Figure 6)
CAUTION: Avoid injury! Engine
exhaust fumes contain carbon
monoxide and can cause serious
illness or death.
Move the vehicle to an outside area
before running the engine.
Do not run engine in an enclosed
area without adequate ventilation.
• Connect a pipe extension to
the engine exhaust pipe to
direct the exhaust fumes out
of the area.
• Allow fresh outside air into
the work area to clear the
exhaust fumes out.
CAUTION: Avoid injury! Learn the
use of the control levers. Practice at
half throttle until becoming proficient
and comfortable with the operation
of the unit.
Do not move control levers from
forward to reverse or reverse to
forward position rapidly. Sudden
direction changes could cause loss
of control or damage the unit.

GB - 14
To drive the unit forward: Push both control
levers (A) forward smoothly and evenly.
To turn the unit: Pull the control lever back
on the same side as the direction of the
desired turn. Push the other lever forward.
To stop the unit: Allow both control levers to
return to the neutral position.
To drive the unit in reverse: Pull both
control levers back evenly.
Stopping Unit
1. Allow both control levers to return to the
neutral position.
2. Move the PTO/clutch switch to the OFF
position.
3. Move the throttle lever to the slow idle
position, and let the engine run at that
speed for a few seconds.
4. Turn the key switch to the STOP
position.
5. Engage parking brake.
6. Remove key.
Emergency Stop
To stop blades and unit drive in an
emergency, release operator presence
control lever.
Adjusting Control Handle Height
(Figure 7)
The height of the controls can be adjusted
higher or lower than the factory setting based
on operator preference.
To adjust the control handle height:
1. Remove bottom spring pins on drive
control rods (A) and allow drive rods to
hang loose.
2. Remove thumb knobs (B) from both
sides of unit.
3. Rotate handle assembly up or down to
preferred height.
4. Reinstall thumb knobs.
5. Insert drive control rods into
corresponding holes in pump brackets
(C).
6. Reinstall spring clips on control rods.
CAUTION: Avoid injury! ALWAYS
back up slowly and be sure of your
footing. Look down and behind
before and while backing.
CAUTION: Avoid injury! Children or
bystanders may attempt to move or
operate an unattended unit.
Always engage the parking brake
and remove the key before leaving
unit unattended.
Figure 6
Figure 7
B
Low
A
C
B
Middle (Set at
Factory)
A
C
B
High
A
C

GB - 15
Adjusting Cutting Height
Cutting height can be adjusted from 1-1/2 –
4-1/4 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 16.
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 under the center
belt cover (see Figure 8). To use, remove hex
bolts retaining HOC spacers and remove
spacers. Replace hex bolts to store.
To adjust cut height (Figure 9):
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.
IMPORTANT: Ensure that all HOC rods are
adjusted to the same cut height.
Figure 8
B
A

GB - 16
Additional Cutting Height
When the deck is adjusted to its highestlevel,
up to an additional 3/4 in. of cutting height
can be gained by removing one, two or three
blade spacers (G) from each blade.
Each blade spacer is 1/4 in. (6 mm). If two or
three spacers are removed, shorter blade
bolts (H) must be used. The shorter blade
bolts for this application are mounted under
the center belt cover and retain the HOC
spacers when not in use.
CAUTION: Do 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 4.25 in. (108 mm).
To gain additional cut height:
1. Set deck to maximum cut height. See
Adjusting Control Handle Height on
page 14.
2. Remove blades. See REPLACING
MOWER BLADES on page 26.
3. Remove or add spacers to achieve the
desired cut height
HEIGHT OF CUT – FLOAT DECK PRO WALKS
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 (83) Yes
5 3.5 (90) No
3.75 (95) Yes
6 4.0 (102) No
4.25 (108) Yes
For HOC over 4.25 in. (108 mm): See
Additional Cutting Height on page 16.
Figure 9
B
D
C
1
2
3
4
5
6
HOC
Rod
Position
E
Figure 10
G
Figure 11
H

GB - 17
.
4. Replace the mower blades.
IMPORTANT: Ensure that all mower blades
are mounted with the same number of
spacers.
Moving the Unit Manually
IMPORTANT: Transmission damage may
occur if the unit is moved or towed incorrectly.
• Move unit by hand only.
• Do not use another vehicle to move
unit.
• Do not tow unit.
1. Park unit safely. See Using the Parking
Brake on page 13.
2. Turn bypass valves (A) one full turn
counterclockwise (open position).
3. Release parking brake.
4. Push unit to desired location.
NOTE: Due to internal hydraulic system
resistance, the unit will move slowly.
5. Turn bypass valves one full turn
clockwise (closed position). Tighten
valve to 100 lbf-in (11 N•m).
6. Engage parking brake.
Transporting Unit
ALWAYS shut off engine and remove key
when transporting unit on a truck or trailer.
Use extra care when loading or unloading
unit.
Servicing
IMPORTANT: Operating in extreme
conditions may require more frequent service
intervals:
• Engine components may become dirty
or plugged when operating in extreme
dust or other severe conditions.
• Engine oil and spark plugs may lose
efficiency if vehicle is operated
constantly at slow or low engine
speeds or with frequent short trips.
Refer to the following timetables to perform
routine maintenance on your unit.
Break-In (After First 8 Hours of
Operation)
• Change engine oil and filter.
• Check drive belt tension.
• Check transmission neutral
adjustment.
• Check wheel nut torque.
• Check and adjust (as needed) parking
brake.
• Remove debris from the underside of
the mower deck.
Every 25 Hours or Weekly (Whichever
Comes First)
• Apply grease to front caster wheels.
• Apply grease to front caster wheel
spindles.
• Remove debris from the underside of
the mower deck.
Every 50 Hours or Weekly (Whichever
Comes First)
• Change engine oil and filter. (See
engine manual).
Desired Cut
Height –
In. (mm)
Number of
Spacers on
Spindle
Blade Bolt
4.5 (114) 2 Standard
4.75 (121) 1 Short
5.0 (127) 0 Short
CAUTION: With the bypass valves
open, the unit will have unrestricted
motion if the parking brake is not
set.
• The unit may free-wheel out
of control if the bypass valve
is opened with the unit on an
incline.
• Park the unit on a level
surface and set the parking
brake before opening the
bypass valve.
CAUTION: Avoid injury! Use extra
care when loading or unloading the
unit into a trailer or truck.
Figure 12
A
MAINTENANCE

GB - 18
• Apply grease to front caster wheels.
• Apply grease to front caster wheel
spindles.
• Remove debris from the underside of
the mower deck.
• Check drive belt tension.
• Check tire pressure.
• Clean engine air filter.
• Check wheel nut torque.
Every 160 Hours or Monthly
(Whichever Comes First)
• Grease spindle bearings.
• Check transmission oil level.
• Spray lubricate mower deck idler
pulley pivots.
• Spray lubricate pump control linkage.
• Spray lubricate control lever pivot
shafts (both sides).
• Spray lubricate throttle cable.
• Spray lubricate choke control cable.
Annually
• Inspect all spindle bearings. Replace
as needed.
• Inspect all mower deck idler pulleys.
Replace as needed.
• Remove and inspect caster wheel
roller bearings; clean and pack with
grease. Replace as needed.
• Inspect drive belts. Replace as
needed. Run in and adjust tension.
• Clean power unit.
• Check all bolts and nuts; tighten as
needed.
• Replace spark plugs.
SERVICE LUBRICATION
Grease
Use a general all-purpose grease with an
NLGI grade No.2 rating.
Lubrication Points
• Apply grease to caster wheel bearings
(A) on both sides.
• Apply grease to front caster wheel
pivot bushings (B) on both sides.
• Apply grease to spindle bearings (C),
until grease is expelled from vent on
spindle housings.
• Apply grease to drive belt idler arm
pivot joint (D).
Figure 13
A
B
Figure 14
C

GB - 19
Spray Lubricant
Use a general-purpose petroleum-based
spray lubricant. Lubricate the following items:
• Apply spray lubricant to steering
control levers pivot shaft (E).
• Apply spray lubricant to throttle control
cable (F).
• Apply spray lubricant to choke control
cable (G)
• Apply spray lubricant to upper and
lower parking brake linkages (H).
• Apply spray lubricant to hydro pump
upper (J) and lower (K) control
linkages on both sides.
ENGINE SERVICE
Avoid Fumes
Engine Oil
Use oil viscosity based on the expected air
temperature range during the period between
oil changes. See the engine manual for
correct specifications.
Check Engine Oil Level
IMPORTANT: Avoid damage! Failure to
check the oil level regularly could lead to
serious engine problems if oil level is low:
• Check oil level before operating.
• Check oil level when the engine is cold
and not running.
• Keep level between the FULL and the
ADD marks.
• Shut off engine before adding oil.
IMPORTANT: Check oil twice a day if the
engine runs over four hours in a day.
1. Park unit safely. (See Using the Parking
Brake on page 13.)
2. Allow engine to cool.
3. Clean area around dipstick (A) to
prevent debris from falling into
crankcase.
D
Figure 15
988146
988147, 148
D
Figure 16
J
FG
H
K
E
CAUTION: Avoid injury! Engine
exhaust fumes contain carbon
monoxide and can cause serious
illness or death.
Move the unit to an outside area
before running the engine.
Do not run an engine in an enclosed
area without adequate ventilation.
• Connect a pipe extension to
the engine exhaust pipe to
direct the exhaust fumes out
of the area.
• Allow fresh outside air into
the work area to clear the
exhaust fumes out.

GB - 20
4. Remove dipstick. Wipe with a clean
cloth.
5. Install dipstick and allow the cap to rest
on the end of the tube. Do not tighten
the cap.
IMPORTANT: Avoid damage! To prevent
extensive engine wear or damage, always
maintain the proper engine oil level. Never
operate the engine with the oil level below the
ADD mark or over the FULL mark.
6. Remove dipstick and check oil level on
dipstick. Oil must be between the ADD
and FULL marks.
• If oil is low, add oil to bring oil level no
higher than the FULL mark on dipstick.
• If oil level is above the FULL mark,
drain to proper level.
7. Install and tighten dipstick.
Change Engine Oil and Filter
NOTE: An oil drain tube is provided with this
unit. Attach the tube to the oil drain fitting on
the engine, and open valve (A) to drain the
used oil. Close the valve, and remove the
drain tube from the fitting after the oil has
been drained. Store the drain tube after use.
Change engine oil and oil filter (B) at
recommended intervals.See Servicing on
page 17. See the engine manual for complete
procedures.
Clean Air Intake Screen and Engine
Fins
IMPORTANT: Avoid damage! The engine is
air-cooled and requires a large amount of air
intake when running. Reduced air intake can
cause overheating:
• Keep air intake screen and cooling fins
clean.
• Keep covers and screens in place.
Keep air intake screens and engine cooling
fins clear of debris to ensure proper cooling.
See the engine manual for complete
procedures.
Check and Clean Air Filter Elements
IMPORTANT: Avoid damage! Dirt and debris
can enter the engine through a damaged filter
element:
• Do not wash paper element.
• Do not attempt to clean paper element
by tapping against another object.
• Do not use pressurized air to clean
element.
• Replace element only if it is very dirty,
damaged or the seal is cracked.
Check and clean air filter elements at the
recommended intervals. See Servicing on
page 17. See the engine manual for complete
procedures.
Check Spark Plugs
Check spark plugs at the recommended
intervals (see Servicing on page 17) See the
engine manual for complete procedures.
Figure 17
A
Figure 18
AB
CAUTION: Avoid injury! Touching
hot surfaces can burn skin. The
engine and components will be hot
if the engine has been running.
Allow the engine to cool before
servicing.
CAUTION: Avoid injury! Touching
hot surfaces can burn skin. The
engine and components will be hot
if the engine has been running.
Allow the engine to cool before
servicing.