™
Pro-Turn
Operator’s Manual
Manuel de I’utilisateur
Models
991215 – Pro-Turn 48
(SN 000101 +)
991216 – Pro-Turn 52
(SN 000101 +)
991217 – Pro-Turn 60
(SN 000101 +)
991218 – Pro-Turn 48
(SN 000101 +)
991219 – Pro-Turn 52
(SN 000101 +)
991220 – Pro-Turn 60
(SN 000101 +)
991221 – Pro-Turn 48 CARB
(SN 000101 +)
991222 – Pro-Turn 52 CARB
(SN 000101 +)
991223 – Pro-Turn 60 CARB
(SN 000101 +)
E10
ENGLISH
FRANÇAIS
05025400B • 1/17
Printed in USA
TABLE OF CONTENTS
WELCOME . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY. . . . . . . . . . . . . . . . . . . . . . . . . 2
Practices & Laws . . . . . . . . . . . . . . . . . .
Emission Control System. . . . . . . . . . . .
Required Operator Training . . . . . . . . . .
Safety Alert Symbol . . . . . . . . . . . . . . . .
Signal Words . . . . . . . . . . . . . . . . . . . . .
Safety Decals. . . . . . . . . . . . . . . . . . . . .
Safety Rules. . . . . . . . . . . . . . . . . . . . . .
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . .
2
2
2
2
2
3
6
12
CONTROLS & FEATURES. . . . . . . . . . 14
Ignition Key . . . . . . . . . . . . . . . . . . . . . .
Choke Control Lever . . . . . . . . . . . . . . .
Throttle Control Lever . . . . . . . . . . . . . .
Power Take-off (PTO) Switch . . . . . . . .
Fuel Valve . . . . . . . . . . . . . . . . . . . . . . .
Oil Pressure Warning Light . . . . . . . . . .
Deck Lift Pedal. . . . . . . . . . . . . . . . . . . .
Height-of-Cut Adjustment System . . . . .
Transport Lock . . . . . . . . . . . . . . . . . . . .
Transport Lock Release Lever. . . . . . . .
Seat Adjustment Lever. . . . . . . . . . . . . .
Armrest Angle Adjustment Knobs . . . . .
Hour / Maintenance Meter . . . . . . . . . . .
Steering Levers . . . . . . . . . . . . . . . . . . .
Rollover Protection Structure (ROPS) . .
Transaxle Bypass Levers. . . . . . . . . . . .
Anti-scalp Wheels . . . . . . . . . . . . . . . . .
Safety Interlock System . . . . . . . . . . . . .
Parking Brake Lever . . . . . . . . . . . . . . .
BEFORE OPERATION . . . . . . . . . . . . .
16
16
16
16
16
17
17
17
17
17
17
17
17
17
17
17
17
17
18
18
Position ROPS . . . . . . . . . . . . . . . . . . . .
Adjust Seat. . . . . . . . . . . . . . . . . . . . . . .
Set Cutting Height . . . . . . . . . . . . . . . . .
Open Fuel Valve . . . . . . . . . . . . . . . . . .
OPERATION . . . . . . . . . . . . . . . . . . . . .
19
19
20
20
20
Emergency Stopping . . . . . . . . . . . . . . .
Start The Engine . . . . . . . . . . . . . . . . . .
Operate Unit. . . . . . . . . . . . . . . . . . . . . .
Stop the Engine . . . . . . . . . . . . . . . . . . .
Move Unit Manually . . . . . . . . . . . . . . . .
Transport Unit . . . . . . . . . . . . . . . . . . . .
Release Transport Lock. . . . . . . . . . . . .
MAINTENANCE . . . . . . . . . . . . . . . . . .
20
21
21
21
22
22
22
22
Service Position . . . . . . . . . . . . . . . . . . . 22
Hour / Maintenance Meter . . . . . . . . . . . 23
Maintenance Schedule . . . . . . . . . . . . .
Service Parts . . . . . . . . . . . . . . . . . . . . .
Check Safety Interlock System . . . . . . .
Check Hydraulic System . . . . . . . . . . . .
Check Tire Pressure . . . . . . . . . . . . . . .
Check Carbon Canister Filters. . . . . . . .
Check Mower Blades. . . . . . . . . . . . . . .
Check Parking Brake . . . . . . . . . . . . . . .
Clean Battery . . . . . . . . . . . . . . . . . . . . .
Charge Battery. . . . . . . . . . . . . . . . . . . .
Check Fasteners . . . . . . . . . . . . . . . . . .
Lubricate Unit. . . . . . . . . . . . . . . . . . . . .
SERVICE & ADJUSTMENTS . . . . . . . .
23
24
24
24
26
26
26
27
28
28
28
28
29
Electrical Service . . . . . . . . . . . . . . . . . .
Adjust Transaxles . . . . . . . . . . . . . . . . .
Adjust Parking Brake Interlock. . . . . . . .
Adjust Steering Levers. . . . . . . . . . . . . .
Adjust Unit to Drive Straight. . . . . . . . . .
Adjust Parking Brake . . . . . . . . . . . . . . .
Replace Mower Belts. . . . . . . . . . . . . . .
Replace Transaxle Drive Belt . . . . . . . .
Adjust Anti-Scalp Wheels . . . . . . . . . . .
Adjust Deck Lift Pedal . . . . . . . . . . . . . .
Remove / Install Mower Deck . . . . . . . .
Level and Pitch Mower Deck . . . . . . . . .
Adjust Clutch . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING . . . . . . . . . . . . .
29
29
30
31
32
33
33
36
37
37
37
38
40
41
STORAGE . . . . . . . . . . . . . . . . . . . . . . . 43
Short-Term Storage . . . . . . . . . . . . . . . .
Long Term Storage . . . . . . . . . . . . . . . .
Start-of-Season Preparation . . . . . . . . .
ACCESSORIES. . . . . . . . . . . . . . . . . . .
43
43
43
43
SPECIFICATIONS. . . . . . . . . . . . . . . . . 44
WARRANTY . . . . . . . . . . . . . . . . . . . . . 47
WELCOME
Congratulations on your purchase and welcome to the Gravely family! Every machine in the
Gravely lineup is designed for long-lasting and unsurpassed performance. We are confident
your machine will be part of your family for many years to come.
Have Questions or Need Assistance?
gravelymower.com • gravely.custhelp.com
A parts manual for your unit is available for free download
or purchase at gravely.com.
Manual del operador español está disponible para su descarga gratuita o
compra en gravely.com.
PRODUCT REGISTRATION
MANUALS
You or the dealer you purchased the unit from
must register the product at the time of
purchase. Know the model and serial
numbers of your unit and register online at
gravely.com or return the registration card to
Ariens Company. See Figure 1 for label
location.
Before operating or servicing the unit, carefully
and completely read the manuals provided with
the unit. They contain safety instructions and
important information about unit controls.
The engine on this unit is covered by a
separate manual. Refer to the engine manual
for engine service recommendations. Contact
the engine manufacturer for a replacement
manual if necessary.
Your dealer must review important information
in this manual with you before or upon delivery
of the unit. It is your responsibility to read and
understand all safety precautions and
instructions in the manuals. If you do not
understand or have difficulty following the
instructions, contact your Gravely dealer for
assistance. To locate your nearest Gravely
dealer, go to gravelymower.com.
Model & Serial Number Label
DISCLAIMER
Figure 1
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 in this manual
may be optional. Some illustrations may not be
applicable to your unit.
Record model number here.
Record serial number here.
EN - 1
SAFETY
WARNING: AVOID INJURY.
This cutting machine is capable
of amputating body parts and
throwing objects. Failure to
observe the safety instructions in
the manuals and on decals
could result in serious injury or
death.
ALWAYS disengage blades,
stop unit and engine, remove
key, set parking brake and allow
moving parts to stop before
leaving operator’s position.
Read these safety rules and follow them
closely. Failure to follow these rules could
lead to loss of control of unit, severe personal
injury or death to you or bystanders, or result
in damage to property or the unit.
PRACTICES & LAWS
Practice usual and customary safe working
precautions. Learn applicable rules and laws
in your area. ALWAYS follow the practices set
forth in this manual.
EMISSION CONTROL SYSTEM
SAFETY ALERT SYMBOL
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.
REQUIRED OPERATOR
TRAINING
This is the safety alert symbol. It
means:
• ATTENTION!
• YOUR SAFETY IS
INVOLVED!
When you see this symbol:
• BECOME ALERT!
• OBEY THE MESSAGE!
SIGNAL WORDS
The safety alert symbol above and signal
words below are used on decals and in this
manual. Read and understand all safety
messages.
1. Danger
Read and understand the
Operator's Manual and decals
on the unit. This information is
for your safety and the proper
use of your equipment.
Failure to follow these
instructions and warnings may cause death
or serious injury. If you have purchased this
product from a Gravely dealer, the dealer can
provide you with training.
Familiarize yourself and any other operators
with all controls and the safe use of the
features of this unit. If you loan, rent or sell
this product to others, provide them with all
manuals.
If you have any questions, please call our
customer support line at 920-756-4688 or
contact us at www.gravely.com. Do not use
this equipment if, after reading the Operator's
Manual and the on-board decals, you have
any questions about the safe use of this
product.
DANGER: Indicates an
IMMINENTLY HAZARDOUS
SITUATION! If not avoided,
WILL RESULT in death or
serious injury.
2. Warning
WARNING: Indicates a
POTENTIALLY HAZARDOUS
SITUATION! If not avoided,
COULD RESULT in death or
serious injury.
3. Caution
EN - 2
CAUTION: Indicates a
POTENTIALLY HAZARDOUS
SITUATION! If not avoided, MAY
RESULT in minor or moderate
injury. It may also be used to
alert against unsafe practices.
4. Notice
SAFETY DECALS
NOTICE: Indicates information or procedures
that are considered important but not hazard
related. If not followed, property damage
could result.
The safety decals on your unit are visual
reminders of the important safety information
in this manual. All messages on your unit
must be fully understood and carefully
followed. Safety decals on the unit are
explained below.
ALWAYS replace missing or damaged safety
decals. Replacement decal information is in
the parts manual for your unit. Decals can be
ordered from your dealer.
See Figure 2 for safety decal locations.
5. Important
IMPORTANT: Indicates general reference
information worthy of special attention.
Safety Decal Locations
7
9
5
A
6
2
5
07800401
3
A
6
07800410
8
KEEP HANDS and FEET AWAY
1
P
00
02
81
98
4
07800654
3
07800410
Figure 2
EN - 3
Safety Decal Descriptions
1.3 Tipping Hazard
1. DANGER!
Avoid tipping hazard.
DANGER!
DO NOT operate on slopes
over 15°.
Read Operator’s Manual.
1.1 Amputation Hazard
DO NOT operate on slopes
over 15°.
To avoid amputation hazard,
DO NOT put hands near
rotating blades.
1.4 Service Hazard
Before servicing unit, do the
following:
To avoid amputation hazard,
DO NOT put hands near
moving belts.
Read Operator’s Manual
before servicing or making
adjustments to unit.
Keep hands away from all
rotating or moving parts.
P
Set parking brake.
Keep all guards and shields
in place.
Remove key and disconnect
spark plug before servicing
or making adjustments to
unit.
1.2 Discharge Hazard
NEVER direct discharge
toward people, pets or
property. Thrown objects
can cause injury or damage.
1.5 Bystander Hazard
DO NOT operate the unit in
the presence of bystanders.
Keep children and others
away from unit while unit is
in operation.
DO NOT operate mower
unless all guards are in
operating position or bagger
is attached.
EN - 4
DO NOT carry passengers.
Stop engine, remove key,
and read manual before
servicing or making
adjustments to unit.
Look behind when operating
the unit in reverse.
1.6 Loss of Traction Hazard
Keep children and others
away from unit while unit is
in operation.
If loss of traction is
experienced do the
following:
Keep hands and away from
all rotating or moving parts.
Disengage PTO.
DO NOT step or stand in
this area.
Look before backing.
Proceed off slope slowly.
4. DANGER!
Discharge Hazard – NEVER
operate unit without
discharge chute in operating
position. Thrown objects can
cause injury or damage.
DO NOT try to turn or speed
up.
2. DANGER!
DO NOT operate mower
unless all guards are in
operating position or bagger
is attached.
Discharge Hazard – NEVER
operate unit without
discharge chute in operating
position. Thrown objects can
cause injury or damage.
5. HOT SURFACES!
DO NOT operate mower
unless all guards are in
operating position or bagger
is attached.
DO NOT touch parts which
are hot from operation.
ALWAYS allow parts to cool.
3. DANGER!
6. ROTATING PARTS!
Discharge Hazard – NEVER
direct discharge toward
people, pets or property.
Thrown objects can cause
injury or damage.
Amputation Hazard –
NEVER stick hands or feet
under deck or shielded
areas.
EN - 5
AVOID INJURY. Stay clear
of rotating parts.
7. WARNING!
9. WARNING!
Overfilling may cause
severe damage to
evaporative system.
NEVER fill fuel tank when
engine is running, hot, or
unit is indoors.
Replace fuel cap securely
and clean up spilled fuel.
SERIOUS INJURY OR
DEATH may result from
machine rollover.
• Failure to follow these instructions could
result in serious injury or death.
• DO NOT operate machine on steep
slopes or near drop offs.
• Avoid sharp and/or quick turns.
• DO NOT exceed the machine weight
rating of the ROPS.
• ALWAYS use the seat belt when the
ROPS is locked in the upright position.
• DO NOT jump if machine tips.
• If ROPS is foldable:
— ALWAYS keep the ROPS fully
extended.
— WHEN ROPS MUST BE DOWN:
- DO NOT use seat belt.
- Drive with extra care.
• If equipped with seat platform:
— DO NOT operate machine without
seat platform pins in place or locks
engaged.
ROLLOVER PROTECTIVE STRUCTURE
To maintain operator protection and roll bar
certification:
• Replace a damaged roll bar, DO NOT
attempt to repair or modify.
• Any alteration of the roll bar must be
approved by the manufacturer.
• DO NOT exceed the machine weight
rating of the roll bar.
Read Operator’s Manual.
No smoking.
MAX. FILL
Fill fuel tank to bottom of
filler neck – MAXIMUM.
SAFETY RULES
The following safety instructions are based
on the B71.4 specifications of the American
National Standards Institute and ISO 5395 in
effect at the time of production.
Training
Read, understand and follow all instructions
on the machine and in the manual(s) before
operating this unit.
Keep the area of operation clear of all
persons, particularly small children. Be alert
and shut off unit if children enter area.
8. DANGER!
Keep hands and feet away
from all rotating or moving
parts.
ALWAYS remove key and/or wire from spark
plug before assembly, maintenance or
service. Unintentional engine start up can
cause death or serious injury.
Complete a walk-around inspection of the
unit to understand the unit, your work area
and all safety decals.
EN - 6
Understand:
• How to operate all controls
• The functions of all controls
• How to STOP in an emergency
• Braking and steering characteristics
• Turning radius and clearances
If the operator or the mechanic cannot read
the manual, it is the owner’s responsibility to
explain it to them.
Only allow responsible adults, who are
familiar with the instructions, to operate this
machine.
Use extreme care when approaching blind
corners, shrubs, trees, or other objects that
may block your view of a child.
Keep children out of the mowing area and in
the watchful care of a responsible adult
other than the operator.
Personal Protection
DO NOT wear loose clothing or jewelry and
tie back hair that may get caught in rotating
parts.
Wear adequate outer garments.
ALWAYS train any inexperienced operators
and require them to read and understand all
manuals and decals.
NEVER wear open sandals or canvas shoes
during operation. Wear adequate safety
gear, protective gloves and footwear.
Only the user can prevent and is responsible
for accidents or injuries occurring to
themselves, other people or property.
Wear proper footwear to improve footing on
slippery surfaces.
ALWAYS wear eye and ear protection when
operating machine.
Operator Age
Before Operation
DO NOT allow children under the age of 18
to operate outdoor power equipment.
Local regulations may restrict the age of the
operator.
Data indicates operators above age 60 are
involved in a large percentage of riding
mower-related injuries.
These operators should evaluate their ability
to operate the riding mower safely enough to
protect themselves and others from serious
injury.
Children
Tragic accidents can occur if the operator is
not alert to the presence of children.
Children are often attracted to the machine
and the mowing activity. NEVER assume
that children will remain where you last saw
them.
Be alert and turn machine off if a child enters
the area.
Before and while backing, look behind and
down for small children.
NEVER carry children, even with the
blade(s) shut off. They may fall off and be
seriously injured or interfere with safe
machine operation. Children who have been
given rides in the past may suddenly appear
in the mowing area for another ride and be
run over or backed over by the machine.
NEVER allow children to operate the
machine.
Keep all nuts and bolts tight to be sure the
equipment is in safe working condition.
Maintain the machine to be in compliance
with the maintenance schedule.
Clean grass and debris from unit, especially
from around muffler and engine, to help
prevent fires.
Check parking brake operation frequently.
Adjust and service as required.
Inspect unit before each use for missing or
damaged decals and shields, correctly
operating safety interlock system, and
deterioration of grass catchers. Replace or
repair as needed.
Ensure Safety Interlock System is
functioning properly. DO NOT operate unit if
safety interlock is damaged or disabled.
Start and operate unit only when seated in
operator’s position. Steering control levers
must be in neutral, PTO disengaged and
parking brake set when starting engine.
NEVER tamper with safety devices. Check
their proper operation regularly.
Keep machine free of grass, leaves, or other
debris build-up. Clean up oil or fuel spillage
and remove any fuel-soaked debris.
Operation
Be sure the area is clear of bystanders
before operating. Stop machine if anyone
enters the area.
EN - 7
NEVER operate machine in a closed or
poorly ventilated area.
Stop engine before removing grass catcher
or unclogging chute.
ALWAYS maintain unit in safe operating
condition. Damaged or worn out muffler can
cause fire or explosion.
Slow down before turning.
This product is equipped with an internal
combustion type engine. DO NOT use unit
on or near any unimproved, forest-covered
or brush covered land unless exhaust
system is equipped with a spark arrester
meeting applicable local, state or federal
laws. A spark arrester, if it is used, must be
maintained in effective working order by
operator.
If you strike a foreign object, stop and
inspect the machine. Repair, if necessary,
before restarting.
NEVER leave a running machine
unattended. ALWAYS turn off blade(s), set
parking brake, stop engine and remove key
before dismounting.
Disengage blade(s) when not mowing. Shut
off engine and wait for all parts to come to a
complete stop before cleaning the machine,
removing the grass catcher, or unclogging
the discharge guard.
DO NOT operate machine while feeling
tired, ill or under the influence of alcohol or
other drugs.
Operation Conditions
DO NOT put hands or feet near rotating
parts or under the machine. Keep clear of
the discharge opening at all times.
Lightning can cause severe injury or death.
If lightning is seen or thunder is heard in the
area, do not operate the machine; seek
shelter.
DO NOT touch parts which are hot. Allow
parts to cool.
DO NOT operate machine without the entire
grass catcher, discharge guard, or other
safety devices in place and working.
ALWAYS keep hands and feet away from all
pinch points.
Avoid slippery surfaces. ALWAYS be sure of
your footing.
NEVER carry passengers.
NEVER direct discharged material toward
anyone. Avoid discharging material against
a wall or obstruction. Material may ricochet
back toward the operator. Stop the blade(s)
when crossing gravel surfaces.
NEVER engage PTO when attachment,
including mower blades, is not in use.
ALWAYS turn off power to attachment when
not in active use such as traveling or
crossing driveways.
ALWAYS disengage PTO, stop unit and
engine, remove key, engage parking brake
and allow moving parts to stop before
leaving operator’s position.
ALWAYS check overhead and side
clearances carefully before operation.
Watch for traffic when operating near or
crossing roadways.
Clear the area of objects such as rocks,
wire, toys, etc., which could be thrown by the
blades.
Check for weak spots on docks, ramps or
floors. Avoid uneven work areas and rough
terrain. Stay alert for hidden hazards or
traffic.
Use care when approaching blind corners,
shrubs, trees or other objects that may
obscure vision.
Dust, smoke, fog, etc. can reduce vision and
cause an accident.
Operate machine only in daylight or good
artificial light.
Slope Operation
Slopes are a major factor related to loss of
control and tip-over accidents, which can
result in severe injury or death. Operation on
all slopes requires extra caution. If you
cannot back up the slope or if you feel
uneasy on it, DO NOT mow it.
NEVER engage PTO while raising the
attachment, including mower blades, or
when attachment is in the raised position.
Keep safety devices or guards in place and
functioning properly. NEVER modify or
remove safety devices.
DO NOT operate on slopes of more than
15°.
DO NOT mow in reverse unless absolutely
necessary. ALWAYS look down and behind
before and while backing.
Mow up and down slopes, not across.
EN - 8
Watch for holes, ruts, bumps, rocks, or other
hidden objects. Uneven terrain could
overturn the machine. Tall grass can hide
obstacles.
NEVER store the machine or fuel container
where there is an open flame, spark, or pilot
light such as on a water or space heater or
other appliances.
DO NOT mow on moist or wet grass. Tires
may lose traction causing a loss of control.
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.
Use extra care while operating machine with
grass catchers or other attachments; they
can affect the stability of the machine. DO
NOT use on steep slopes.
Keep all movements on the slope slow and
gradual. DO NOT make sudden changes in
speed or direction, which could cause the
machine to roll over.
NEVER fuel the machine indoors.
NEVER remove gas cap or add fuel with the
engine running. Allow engine to cool before
fueling.
Fuel is highly flammable and its vapors are
explosive. Handle with care. Use only an
approved gasoline container with an
appropriately sized dispensing spout.
NO smoking, NO sparks, NO flames.
Avoid starting, stopping, or turning on a
slope. If the tires lose traction, disengage
the blade(s) and proceed slowly straight
down the slope.
Remove gas-powered equipment from the
trailer and refuel it on the ground. If this is
not possible, then refuel such equipment
with a portable container, rather than from a
gasoline dispenser nozzle.
Operation on slopes may lead to loss of
steering control. When operating on slopes
be prepared to react to an emergency
situation:
• Return steering levers to neutral
position.
• Immediately set parking brake.
• Turn off PTO and engine.
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.
DO NOT try to stabilize the machine by
putting your foot on the ground.
NEVER overfill fuel tank. Replace gas cap
and tighten securely.
DO NOT park on slopes unless necessary.
When parking on slope, ALWAYS chock or
block wheels. ALWAYS set parking brake.
If fuel is spilled on clothing, change clothing
immediately.
Choose a low ground speed so you will not
have to stop or shift while on a slope.
Towing/Transporting
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.
DO NOT bypass transmission or allow
transmission to free-wheel when on a slope.
Fuel
To avoid personal injury or property damage,
use extreme care in handling gasoline.
Gasoline is extremely flammable and the
vapors are explosive.
Ethanol blends must not exceed E10. Higher
ethanol content may cause your machine to
run hotter and damage your engine.
Replace fuel cap securely and clean up
spilled fuel before starting engine.
Extinguish all cigarettes, cigars, pipes, and
other sources of ignition.
Use only an approved gasoline container.
Follow the manufacturer’s recommendations
for weight limits for towed equipment and
towing on slopes.
NEVER allow children or others in or on
towed equipment.
Tow only with a machine that has a hitch
designed for towing. DO NOT attach towed
equipment except at the hitch point.
On slopes, the weight of the towed
equipment may cause loss of control.
Travel slowly and allow extra distance to
stop.
Accessories
Use only Ariens Company-recommended
attachments or accessories that are
designed for your unit and that are
appropriate to your use and can be used
safely in your application.
Follow the manufacturer’s recommendation
for wheel weights or counterweights
EN - 9
Check grass catcher components and the
discharge guard frequently and replace with
the manufacturer’s recommended parts,
when necessary.
Service
Batteries
Do not change engine governor setting or
overspeed the engine.
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.
The use of non-genuine replacement parts
or accessories could adversely affect
machine operation and safety.
Maintain or replace safety and instruction
labels, as necessary.
Keep unit free of debris. Clean up oil or fuel
spills.
Do not change engine governor setting or
overspeed the engine.
ALWAYS block wheels and know all jack
stands are strong and secure and will hold
weight of unit during maintenance.
Release any pneumatic or hydraulic
pressure from components slowly.
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.
NEVER attempt to make any adjustments to
unit while engine is running (except where
specifically recommended). Stop engine,
remove key or spark plug wire and wait for
all moving parts to stop before servicing or
cleaning.
No flames, No sparks, No smoking near
battery.
Lower cutting deck unless a positive
mechanical lock is used.
ALWAYS wear safety glasses and protective
gear near battery. Use insulated tools.
Allow engine to cool before servicing.
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 reproductive
harm. Wash hands after handling.
Rollover Protection System (ROPS)
Moving parts can cut or amputate fingers or
a hand. On multiblade mowers, rotation of
one blade will cause all blades to rotate.
NEVER weld or straighten mower blades.
NEVER make adjustments or repairs with
the engine running.
Mower blades are sharp. Wrap the blade or
wear gloves, and use extra caution when
servicing them.
ALWAYS keep body and hands away from
pin holes or nozzles which eject hydraulic
fluid under pressure.
Frequently inspect ROPS and seat belt for
damage or loose hardware.
Use extreme care when working close to
fences, ditches, or on hills.
Check overhead clearance carefully before
driving under any objects.
ALWAYS wear seat belt while operating the
unit with the ROPS in the upright position.
Foreign fluid, such as hydraulic fluid,
injected into body can result in gangrene.
Fluid must be surgically removed within a
few hours by a doctor familiar with this form
of injury.
Only lower ROPS for transport.
DO NOT wear a seat belt while operating
the unit with the center bar in the lowered
position.
DO NOT weld, cut, drill or modify ROPS in
any manner unless instructed by the
manufacturer.
EN - 10
Transporting Unit
Use extra care when loading or unloading
the machine into a trailer.
Secure unit chassis to transport vehicle.
NEVER secure from rods or linkages that
could be damaged.
DO NOT transport machine while engine is
running.
ALWAYS turn off power to attachment and
shut off fuel when transporting unit.
Storage
NEVER store unit with fuel in fuel tank,
inside a building where any ignition sources
are present.
Keep machine free of grass, leaves, or other
debris build-up. Clean up oil or fuel spillage
and remove any fuel-soaked debris. Allow
machine to cool before storing.
For extended storage, shut off fuel and
clean unit thoroughly. See engine manual for
proper storage.
EN - 11
5. Remove two eccentric spacers, two
round head square neck bolts and two
locking nuts from hardware bag.
6. Rotate steering levers to operating
position and install eccentric spacer
between steering lever plates. Secure
with hardware. See Figure 5.
ASSEMBLY
WARNING: Read and
understand the Safety section
before proceeding.
1. Remove wrap and packaging materials
from unit.
2. Remove unit from shipping container.
See Move Unit Manually on page 22.
3. Lift discharge chute up slightly and rotate
to operating position. See Figure 3.
2
1
3
Figure 3
4. Rotate ROPS to operating position and
secure with lock pins. Secure lock pins
with hairpins. See Figure 4.
1
1. Eccentric Spacer
2. Steering Lever
3. Steering Lever Plate
Figure 5
7. Adjust steering levers. See Adjust
Steering Levers on page 31.
8. Check tire pressures and inflate to
recommendation. See Specifications on
page 44.
WARNING: AVOID INJURY.
Explosive separation of tire and
rim parts is possible.
• DO NOT inflate tires above
maximum pressure listed on
tire sidewalls.
• DO NOT inflate tires with a
compressor; use a hand
pump.
• DO NOT stand in front of tire
assembly when inflating. Use
a clip-on chuck and extension
hose long enough to allow you
to stand to one side.
• DO NOT mount a tire without
proper equipment and
experience.
2
3
1. ROPS
2. Lock Pin
3. Hairpin
Figure 4
EN - 12
9. Remove battery from unit and charge.
See Charge Battery on page 28.
10. Make sure deck is level. See Level and
Pitch Mower Deck on page 38.
11. Ensure all hardware is tight.
EN - 13
CONTROLS & FEATURES
5
3
4
2
8
30
1
6
29
9
25
7
31
24
20
22
21
23
19
18
26
28
16
14
15
17
Models 991218, 991219,
991220
Models 991215, 991216, 991217,
991221, 991222, 991223
27
13
13
10
10
10
12
11
12
Figure 6
EN - 14
11
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
Ignition Key
Choke Control Lever
Throttle Control Lever
Power Take-off (PTO) Switch
Oil Pressure Warning Light
Hour Meter
Fuel Tank and Cap (2)
Fuel Valve
Hydraulic Oil Expansion Tank (2)
Oil Fill / Dipstick
Oil Drain
Engine Oil Filter
Air Filter
Deck Lift Pedal
Height-of-Cut Adjustment System
Transport Lock Release Lever
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
EN - 15
Flip-up Discharge Chute
Seat Adjustment Lever
Armrest Angle Adjustment Knob (2)
Seat Latch
Seatbelt
Battery (under seat)
Parking Brake Lever
Steering Lever (2)
Rollover Protection Structure (ROPS)
Transaxle Bypass Lever (2)
Anti-Scalp Wheel (6)
Belt Cover (2)
Fuse Box
Relay (2)
Carbon Canister (2) (Models 991221,
991222, 991223)
WARNING: AVOID INJURY.
Read and understand the Safety
section before proceeding.
THROTTLE CONTROL LEVER
See Figure 9.
Controls engine speed.
See Figure 6 for all controls and features
locations.
IGNITION KEY
See Figure 7.
Controls power to the engine. The key cannot
be removed when in on position.
Fast
On
Off
Slow
Start
Figure 9
POWER TAKE-OFF (PTO)
SWITCH
Figure 7
CHOKE CONTROL LEVER
See Figure 10.
Controls power to mower blades. The engine
will not start with the PTO switch in the on
position.
PTO / Blades On
See Figure 8.
Controls air intake to the engine.
Choke
On
PTO / Blades Off
Figure 10
FUEL VALVE
Choke
Off
See Figure 11.
Controls fuel flow to the engine. Directs fuel
from left or right fuel tank or stops all fuel flow.
Figure 8
LEFT
TANK
RIGHT
TANK
OFF
Figure 11
EN - 16
OIL PRESSURE WARNING LIGHT
See Figure 12.
Illuminates when oil pressure is low. Stop
engine immediately and refer to engine
manual.
ARMREST ANGLE ADJUSTMENT
KNOBS
Set armrest angle for operator comfort.
HOUR / MAINTENANCE METER
Measures and displays engine runtime.
Some models also display service alerts and
recommended service intervals.
STEERING LEVERS
Control the direction and speed of unit. The
levers gradually return to neutral when
released and are locked in neutral when
parking brake is engaged.
Figure 12
DECK LIFT PEDAL
Raises mower deck to change height-of-cut
setting.
ROLLOVER PROTECTION
STRUCTURE (ROPS)
HEIGHT-OF-CUT ADJUSTMENT
SYSTEM
Sets the height of cut.
Help protect operator that is wearing their
seatbelt in the event of a rollover. DO NOT
wear seatbelt when operating with ROPS in
the lowered position.
TRANSPORT LOCK
TRANSAXLE BYPASS LEVERS
Locks mower deck in the highest position for
transporting or moving unit from one work
area to another. See Transport Unit on
page 22.
Engage and disengage transaxles so unit can
be moved with the engine off.
ANTI-SCALP WHEELS
Help prevent the deck from contacting the
ground and scalping the lawn when mowing
over high spots.
TRANSPORT LOCK RELEASE
LEVER
See Figure 13.
Releases deck from transport lock position.
SAFETY INTERLOCK SYSTEM
Monitors the interaction of various unit
features for operator safety.
Figure 13
SEAT ADJUSTMENT LEVER
Unlocks seat to allow operator to move seat
forward or backward and then lock in desired
position.
EN - 17
PARKING BRAKE LEVER
5. Check condition of air cleaner. Refer to
engine manual.
6. Check function of all controls.
7. Check function of the Safety Interlock
System by performing the tests below.
Contact your Gravely dealer for repair if
any of the tests fail.
See Figure 14.
Engages the parking brake. The engine will
not start when brake is released.
Brake Engaged (On)
WARNING: AVOID INJURY.
Failure of Safety Interlock
System together with improper
operation can result in severe
personal injury.
Test Steering PTO Parking
Levers
Brake
Result
Starting Interlock
Brake Released (Off)
1
Neutral
Off
Engaged Engine
starts.
2
Forward, On
Neutral,
Reverse
Engaged Engine
or
does not
Disengag start.
ed
3
Forward, On
Neutral, or
Reverse Off
Disengag Engine
ed
does not
start.
Operating Interlock (Engine On)
4*
Forward, On
Neutral,
Reverse
Engaged Engine
or
shuts off.
Disengag
ed
5*
Forward, On
Neutral, or
Reverse Off
Disengag Engine
ed
shuts off.
Figure 14
BEFORE OPERATION
* When operator lifts off seat.
WARNING: AVOID INJURY.
Read and understand the Safety
section before proceeding.
1. Know how to stop in an emergency. See
Emergency Stopping on page 20.
2. Check fuel level and add fuel if needed.
IMPORTANT: Use fresh unleaded fuel with
an octane rating of at least 87. DO NOT use
E85 blended fuels; the engine is not E20 /
E30 / E85 compatible. The maximum
recommended ethanol content is 10%.
Gravely recommends using a quality fuel
stabilizer in all fuel. See Short-Term Storage
on page 43.
3. Check engine oil level and add oil if
needed. Refer to engine manual.
4. Check hydraulic oil level. See Check
Hydraulic System on page 24.
EN - 18
POSITION ROPS
Lowered Position With
Bagger Installed
IMPORTANT: Inspect ROPS and seatbelt for
damage and loose or missing hardware.
Raise Center Bar
See Figure 15.
1. Remove hairpins from lock pins and
remove lock pins from hinge plate.
2. Raise center bar and secure with lock
pins and hairpins.
WARNING: AVOID INJURY.
Seatbelt MUST be worn when
operating with center bar raised.
Lowered Position With
No Bagger Installed
Figure 15
Lower Center Bar
See Figure 16.
WARNING: AVOID INJURY.
Lower the center bar only when
needed to drive under an object.
There is no rollover protection
with the center bar in the
lowered position. DO NOT wear
seatbelt when ROPS is in
lowered position.
1. Remove hairpins from lock pins and
remove lock pins from hinge plate.
2. Lower center bar and secure with lock
pins and hairpins.
Figure 16
ADJUST SEAT
WARNING: AVOID INJURY.
Make all seat adjustments with
the unit stopped, parking brake
engaged and engine off.
See Figure 17.
Set Seat Position
IMPORTANT: Return center bar to the raised
position when clear of obstacles.
1. While seated, pull seat adjustment lever
inward and slide seat forward or
backward to desired position.
2. Release lever and slide seat slightly
forward or backward to lock position.
Set Armrest Angle
Turn angle adjustment knob clockwise to
raise the front of armrest or counterclockwise
to lower front of armrest.
EN - 19
OPEN FUEL VALVE
See Figure 19.
• Turn fuel valve forward to use fuel from left
tank.
• Turn fuel valve rearward to use fuel from
right tank.
• Move valve to the off position when storing
or transporting unit.
2
Left
Tank
Right
Tank
1
Off
1. Seat Adjustment Lever
2. Armrest Angle Adjustment Knob
Figure 17
SET CUTTING HEIGHT
See Figure 18.
1. Push mower lift pedal forward until
transport lock engages.
2. Insert adjustment pin through desired
setting in height-of-cut adjustment
system.
3. Push mower lift pedal slightly forward,
release transport lock and slowly release
mower lift pedal until it contacts
adjustment pin and stops.
Figure 19
OPERATION
WARNING: AVOID INJURY.
Read and understand the Safety
section before proceeding.
IMPORTANT: All references to left, right, front
or rear are given from the perspective of
operator in operator’s position, facing the
direction of forward travel.
EMERGENCY STOPPING
WARNING: AVOID INJURY.
Operating on slopes may lead to
loss of steering control. Be
prepared to react.
1. Place steering levers in neutral position
and rotate outward.
2. Engage parking brake.
3. Push PTO switch down to off position.
4. Turn key to off position and remove from
ignition.
Figure 18
EN - 20
START THE ENGINE
1.
2.
3.
4.
Move steering levers to neutral position.
Engage parking brake.
Push PTO switch down to off position.
Turn fuel valve to use fuel from desired
tank.
5. If engine is cold, move choke control
lever to on position. DO NOT use choke
on a warm engine.
6. Move throttle control lever to 3/4 fast
position.
7. Insert ignition key and turn to the start
position. Release key when engine starts.
NOTICE: Do not operate the starter for more
than 10 seconds per starting attempt. If the
engine does not start, allow a 60-second cool
down period between starting attempts.
8. Gradually move choke control lever to the
off position after engine starts.
OPERATE UNIT
1. Start the engine. See Start The Engine on
page 21.
2. Release parking brake.
WARNING: AVOID INJURY.
Move the steering levers slowly
and keep the throttle at slow
speed until you learn how to
operate the unit.
3. Pull PTO switch up to on position.
4. Move throttle control lever to the fast
position.
NOTICE: Never engage the PTO if the
mower is plugged with grass or debris. This
may cause damage to the electric clutch.
Direction Lever Position
of Travel
Left Turn
Push right lever
farther forward
than the left lever.
Stop
Return both
levers to neutral
position.
IMPORTANT: Aggressive turning can scuff or
damage lawns. Always keep both wheels
rotating when making sharp turns. DO NOT
make turns with inside wheel completely
stopped. For minimum turning radius, slowly
reverse inside wheel while moving outside
wheel slowly forward.
For Best Mowing Results
•
•
•
•
•
•
•
•
•
•
•
Cut grass when it is dry.
Keep mower blades sharp.
Keep mower deck properly leveled.
Adjust anti-scalp wheels to prevent
scalping.
Do not set height of cut too low. For very
tall grass, mow twice.
Do not travel too fast.
Mow with engine at full throttle.
When mulching, only remove 1/3 of grass
length per cutting. Do not cut more than 2.5
cm (1") at a time.
Discharge clippings into areas already cut.
Change cutting pattern with each mowing.
Do not allow grass or debris to collect
inside mower deck. Clean after each use.
STOP THE ENGINE
5. Move steering levers to begin mowing.
WARNING: AVOID INJURY.
Wait for all moving parts to stop
before leaving operator’s
position.
Direction Lever Position
of Travel
Forward
Reverse
Push both levers
forward from
neutral position.
Pull both levers
backward from
neutral position.
Right Turn Push left lever
farther forward
than the right
lever.
1. Move steering levers to the neutral
position.
2. Engage parking brake.
3. Reduce throttle to 3/4 fast position.
4. Push PTO switch down to off position.
5. Move throttle control lever to slow
position.
6. Turn key to off position and remove from
ignition.
EN - 21
MOVE UNIT MANUALLY
TRANSPORT UNIT
Bypass the transaxles to move the unit with
the engine off.
1. Place steering levers in neutral position
and engage parking brake.
2. Stop engine, remove key and wait for
moving parts to stop and for hot parts to
cool.
3. Pull both transaxle bypass levers out into
bypass position. Move levers down
slightly to secure position. See Figure 20.
1. Push deck lift pedal completely forward to
engage transport lock. Release pedal.
2. Move unit to transport vehicle.
3. Stop engine, engage parking brake,
remove key from ignition and turn fuel
valve to off position.
4. Secure mower frame to transport vehicle.
NOTICE: NEVER secure unit to vehicle from
rods or linkages that could be damaged.
RELEASE TRANSPORT LOCK
1. Push deck lift pedal forward and lift
transport lock release lever.
2. Slowly return mower lift pedal to resting
position.
MAINTENANCE
WARNING: AVOID INJURY.
Read and understand the Safety
section before proceeding.
Figure 20
4. Release parking brake and push unit to
desired location.
5. Engage parking brake.
6. Lift bypass levers up slightly and push
into operating position. See Figure 21.
Proper maintenance can prolong the life of
unit. The Maintenance Schedule on Page 23
shows the recommended service schedule.
Your Gravely dealer can provide service and
adjustments to keep your unit operating at
peak efficiency. Contact an authorized engine
manufacturer’s service center for engine
service.
More frequent service may be required due to
working conditions (heavy loads, high
ambient temperatures, dusty conditions, or
airborne debris).
See the maintenance instructions in the
Engine Manual for additional information.
SERVICE POSITION
1. Park unit on a flat, level surface.
2. Engage parking brake and rotate steering
levers outward.
3. Stop engine, remove key and wait for
moving parts to stop and for hot parts to
cool.
4. Disengage seat latch from seat plate and
rotate seat forward. See Figure 22.
5. Chock wheels. Strap and clamp unit onto
lift, if used.
Figure 21
EN - 22
CAUTION: AVOID INJURY.
Seat assembly is heavy. Secure
your footing to accommodate
weight shift when rotating seat
forward.
• Hydraulic oil and filter: First 75 hours and
every 400 hours thereafter
• Engine oil and filter: First 25 hours and
every 100 hours thereafter
• Air filter: Every 100 hours
NOTICE: The preset engine oil services
intervals are normal recommended intervals.
Specific engine manufacturer’s
recommendations may vary.
To clear a service message, press the Mode
button to select Service Alert mode and then
hold the Mode button for 3 seconds.
1
1. Mode Button
Figure 23
Figure 22
•
IMPORTANT: Turn ignition key to the off
position when unit is not in use. Some meters
may count hours when the key is in the on
position, even if the engine is off. This results
in inaccurate maintenance intervals.
Check Safety
Interlock System
•
Check Hydraulic
System
•
Service Alerts: Counts down hours until
service is needed and displays "Now" when
service is due. Service time is measured for:
• Engine oil and filter changes (CHG OIL)
• Hydraulic oil and filter changes (CHG H
OIL)
• Air filter service (SVC AIRFILTER)
The service intervals preset into the hour
meter are:
Check Tire Pressure
•
Change Engine Oil *
Check Air Filter *
•
Change Air Filter *
Clean Engine *
Cooling System
Check Mower
Blades
•
Check Carbon
Canister Filter
•
Lubricate Unit
•
Check Parking
Brake
•
Clean Battery
EN - 23
•
Every 500 hrs.
Check Engine Oil *
Every 400 hrs.
Service Performed
Maintenance Models
Every 100 hrs.
See Figure 23.
When the key is in the on position, the Timer
mode displays. Press the Mode button to
toggle between different modes.
Timer: Measures engine runtime until reset.
To reset the timer, press the Mode button to
select TMR1 mode and then hold Mode
button for 3 seconds.
Each Use
Timer measures engine runtime and cannot
be reset.
Every 50 hrs.
Timer-only Models
Every 25 hrs.
MAINTENANCE SCHEDULE
HOUR / MAINTENANCE METER
Check Fasteners
Check Belts
Change Hydraulic
Oil and Filter **
Every 500 hrs.
Every 400 hrs.
Every 100 hrs.
Every 50 hrs.
Every 25 hrs.
Each Use
Service Performed
Qty. Part No.
Mower Blade – 52"
3
00450300
Mulching Blade – 52"
3
04887600
PTO Belt (Engine to Deck)
– 60"
1
07200712
•
Mower Drive Belt – 60"
1
07200038
•
Mower Blade – 60"
3
09081200
Mulching Blade – 60"
3
04887700
22 x 10-10 Tire
1
07101033
Transaxle Drive Belt
1
07226400
•
Lubricate Caster
Fork Bearings
•
Adjust Clutch‡
•
* Refer to engine manual for instructions.
** Change after first 75 hours of operation.
‡ Adjust clutch every 500 hours or once per
season if used less than 500 hours.
Fuel Stabilizer – 118 ml
(4 oz)
• (Except Canada)
• For Canada Only
See your Gravely dealer to purchase service
parts for your unit.
Qty. Part No.
AR
04730300
04742400
Hydraulic Oil Filter
2
21545100
Hydraulic Oil and Filter Kit
1
59402700
Relay
SERVICE PARTS
Description
Description
A/R 04438400
CHECK SAFETY INTERLOCK
SYSTEM
See Safety Interlock System on page 17. If
system does not operate correctly, see your
dealer for repair. DO NOT operate until
repairs are made.
Air Filter (Models 991215,
991216, 991217, 991221,
991222, 991223)
1
21548000
Air Filter (Models 991218,
991219, 991220)
1
21555300
Engine Oil Filter (Models
991215, 991216, 991217,
991221, 991222, 991223)
1
21548100
Check Hydraulic Oil Level
Engine Oil Filter (Models
991218, 991219, 991220)
1
20715100
Spark Plug (Models
991215, 991216, 991217,
991221, 991222, 991223)
2
21547800
See Figure 24.
1. Place unit in service position. See
Service Position on page 22.
2. Check oil level in expansion tanks. Oil
should reach the cold fill indicator mark.
Spark Plug (Models
991218, 991219, 991220)
2
21500009
Fuel Filter (Models 991215,
991216, 991217, 991221,
991222, 991223)
1
21548101
CHECK HYDRAULIC SYSTEM
IMPORTANT: Engine should be cold when
checking initial oil level.
Fuel Filter (Models 991218,
991219, 991220)
21545700
Hydraulic Oil Filter
2
21545100
PTO Belt (Engine to Deck)
– 48"
1
07200809
Mower Drive Belt – 48"
1
07200035
Mower Blade – 48"
3
00450200
Mulching Blade – 48"
3
00273000
PTO Belt (Engine to Deck)
– 52"
1
07200706
Mower Drive Belt – 52"
1
07200036
1
1. Cold Fill Indicator Mark
Figure 24
EN - 24
3. Operate engine for 1 minute and recheck
oil levels.
4. Add hydraulic oil, if needed. See Add
Hydraulic Oil on page 25.
Add Hydraulic Oil
1. Place unit in service position. See
Service Position on page 22.
2. Remove hydraulic oil expansion tank
caps.
3. Fill expansion tanks with 15W-50
synthetic motor oil (Gravely
p/n 00057100) or equivalent until oil
reaches the cold fill indicator mark. See
Figure 24.
4. Reinstall expansion tank caps.
Change Hydraulic Oil and Filter
1. Operate unit for a few minutes to warm
hydraulic oil.
2. Stop engine, remove key and wait for all
moving parts to stop and for hot parts to
cool.
3. Position container under oil filter to catch
used oil.
See Figure 25.
4. Remove filter guard and oil filter from
transaxle.
5. Remove vent / fill plug from the fill port
and allow transaxle to drain completely.
Figure 25
8. Spin filter onto filter housing until it makes
contact, and then turn filter 3/4 turn to
tighten.
9. Reinstall filter guard and torque to 7.3
N•m (65 lb-in). DO NOT overtighten.
10. Add 15W-50 synthetic motor oil (Gravely
p/n 00057100) or equivalent until oil
appears at the bottom of the fill port
(1892.7 mL (64 fl. ounces) per transaxle).
11. Reinstall the vent / fill plug and torque to
20.3 N•m (15 lb-ft / 180 lb-in).
12. Add hydraulic oil to expansion tank until
oil reaches cold fill indicator mark. See
Check Hydraulic Oil Level, step 4.
13. Repeat steps 3 – 12 for other transaxle.
14. Purge hydraulic system. See Purge
Hydraulic System on page 25.
Purge Hydraulic System
Purge air from hydraulic system after draining
oil or changing the filter.
WARNING: AVOID INJURY.
This adjustment requires
operating the engine. Use
extreme care to avoid contact
with moving parts and hot
surfaces. Be sure rear of unit is
well supported and secure
before starting engine.
1. Park unit facing a wall or chock wheels.
2. Release parking brake.
3. Support unit so drive wheels are off the
ground.
4. Bypass transaxles. See Move Unit
Manually on page 22.
5. Start the engine and slowly move steering
levers forward and backward 5 or 6 times.
6. Stop engine.
7. Return transaxle bypass levers to
operating position. See Move Unit
Manually on page 22.
8. Start engine.
9. Slowly move steering levers forward and
backward 5 or 6 times.
10. Stop engine, lower unit to ground and
check oil level. Add oil if needed.
11. Repeat steps 1 – 10 until transaxles
operate smoothly in forward and reverse
at normal speed without excessive noise.
6. Wipe filter-mounting surface clean.
7. Lubricate rubber gasket on new oil filter
with clean hydraulic oil.
EN - 25
CHECK TIRE PRESSURE
CHECK MOWER BLADES
Check and adjust tire pressure. See
Specifications on page 44.
Check blades for wear. Replace or sharpen
as needed.
WARNING: AVOID INJURY.
Explosive separation of tire and
rim parts is possible.
• DO NOT inflate tires above
maximum pressure listed on
tire sidewalls.
• DO NOT inflate tires with a
compressor; use a hand
pump.
• DO NOT stand in front of tire
assembly when inflating. Use
a clip-on chuck and extension
hose long enough to allow you
to stand to one side.
• DO NOT mount a tire without
proper equipment and
experience.
CHECK CARBON CANISTER
FILTERS
CAUTION: AVOID INJURY. Use
sturdy gloves or padding to
protect hands when working with
mower blades.
Rotation of one blade rotates the
other blades.
Remove Blades
1. Place unit in service position. See
Service Position on page 22.
2. Disconnect spark plug wires.
See Figure 27.
3. Remove hardware retaining blades and
lower spindle guards to spindle and
remove parts. Retain all parts for
reinstallation.
4. Clean all grass, dirt and debris from
upper and lower spindle guards.
Models 991221, 991222, 991223
See Figure 26.
Clean or replace carbon canister filters
whenever the engine air filter is cleaned or
replaced.
3
2
1
1
1
1. Mower Blade
2. Lower Spindle Guard
3. Upper Spindle Guard
Figure 27
1. Carbon Canister Filter
Figure 26
EN - 26
Sharpen Blades
3. Check blade balance by sliding an
unthreaded bolt through center hole. Hold
the bolt level. If blade does not remain
horizontal, sharpen the heavy end until
blade is balanced.
CAUTION: DO NOT sharpen
blades while attached to unit.
Install Blades
1. Remove blades. Discard blades if:
• More than 1.3 cm (1/2") of metal is
removed.
• Air lifts are eroded.
• Blades are bent or broken.
2. File or grind an equal amount of metal
from each cutting edge of the blade until
sharp. DO NOT change angle of cutting
edge or round the corner of the blade.
See Figure 28.
DO NOT sharpen to this
pattern.
1
2
See Figure 27.
CAUTION: Mating surfaces
between spindle, lower spindle
guard, blade and washer MUST
be free of debris to ensure
correct tightness and alignment.
1. Secure lower spindle guards and blades
to spindles with one bevel washer and
hex bolt. Torque to 156 – 217 N•m
(115 – 160 lb-ft).
2. Reconnect spark plug wires.
CHECK PARKING BRAKE
IMPORTANT: Parking brake lever engages
drive wheels with two independent cables. It
is possible for parking brake to engage one
drive wheel only, indicating parking brake
cable on opposite side is out of adjustment.
Sharpen to this pattern.
1
3
DISCARD if more than
1.27 cm (1/2")
1.
2.
3.
4.
4
Cutting Edge
Square Corner
Air Lift Erosion
Air Lift
Figure 28
1. Place unit in service position. See
Service Position on page 22.
2. Bypass transaxles. See Move Unit
Manually on page 22.
3. Push unit forward.
• If unit does not move forward, parking
brake is functioning correctly. Advance
to step 4.
• If unit moves forward easily or if just
one side of unit moves easily, adjust
parking brake. See Adjust Parking
Brake on page 33.
4. Return transaxle bypass levers to
operating position. See Move Unit
Manually on page 22.
5. Return seat to operating position.
CAUTION: Unbalanced blades
cause excessive vibration and
eventual damage to unit.
Balance blades before
reinstalling on unit.
NEVER weld or straighten
blades.
EN - 27
CLEAN BATTERY
CHARGE BATTERY
WARNING: AVOID INJURY.
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.
Remove Battery
See Figure 29.
1. Place unit in service position. See
Service Position on page 22.
2. Disconnect the negative cable and then
the positive cable from battery.
3. Remove wing knobs securing hold-down
bracket to battery and remove bracket.
4. Remove battery.
Check battery with a voltmeter. If battery is
less than 11 volts, charge battery.
NOTICE: DO NOT fast charge. Charging at a
higher rate damages or destroys battery.
ONLY use an automatic charger designed for
use with your battery.
NOTICE: Always follow information provided
on battery by battery manufacturer. Contact
battery manufacturer for details regarding
charging.
1. Remove battery from unit. See Remove
Battery on page 28.
2. Place battery on bench in a wellventilated area.
3. Connect positive lead of charger to
positive terminal.
4. Connect negative lead of charger to
negative terminal.
5. Charge battery following battery
manufacturer’s instructions.
6. Reinstall battery. See Install Battery on
page 28.
Jump Starting
Gravely does not recommend jump starting
your unit. Jump-starting can damage engine
and system components. Refer to engine
manual for details.
CHECK FASTENERS
Check for loose hardware and tighten if
necessary.
LUBRICATE UNIT
1. Apply oil to all pivot points and pin
connections.
2. Pump grease into grease fittings.
Figure 29
Clean Battery
1. Clean terminals and battery cable ends
with a wire brush.
2. Coat terminals with dielectric grease or
petroleum jelly.
Install Battery
1. Install battery and secure with hold-down
bracket and wing knobs.
2. Reconnect positive cable and then the
negative cable.
3. Place boot over positive terminal.
4. Return seat to operating position.
EN - 28
Lubricate Caster Fork Bearings
3. Install new fuse.
See Figure 30.
1. Place steering levers in neutral position
and engage parking brake.
2. Stop engine, remove key and wait for all
moving parts to stop and for hot parts to
cool.
3. Remove dust cap.
4. Pump grease into the fitting until grease
appears at the top of the upper bearing.
Replace Relay
NOTICE: Relays are interchangeable. Use
only quality replacement parts. See Service
Parts on page 24.
1. Remove defective relay.
2. Determine cause of relay failure and
repair condition.
3. Install new relay.
1
2
3
1
2
1. Fuse Block
2. Fuse Block Diagram
3. Relay
Figure 31
1. Dust Cap
2. Grease Fitting
Figure 30
ADJUST TRANSAXLES
Check For Excessive Creep
5. Reinstall dust cap.
WARNING: AVOID INJURY.
This adjustment requires
operating the engine. Use
extreme care to avoid contact
with moving parts and hot
surfaces. Be sure rear of unit is
well supported and secure
before starting engine.
SERVICE &
ADJUSTMENTS
WARNING: AVOID INJURY.
Read and understand the Safety
section before proceeding.
ELECTRICAL SERVICE
See Figure 31.
Replace Fuse
NOTICE: To avoid damaging the circuit,
replace fuses with fuses of the same
amperage rating. Determine the cause of
electrical failure and repair before replacing
failed electrical components.
1. Remove defective fuse.
2. Determine cause of fuse failure and
repair condition.
1. Operate unit for a minimum of 5 minutes
to warm hydraulic system.
2. Stop engine and engage parking brake.
3. Chock front wheels and support unit so
both drive wheels are off the ground.
4. Remove drive wheels.
5. Start engine, move throttle lever to fast
position and release parking brake.
6. Move steering levers forward and
backward 5 or 6 times and then return
levers to neutral position.
EN - 29
7. Check hubs for rotation.
• If there is only slight rotation, stop
engine, reinstall wheels and lower unit
to ground.
• If there is excessive rotation, adjust
neutral position as directed below.
IMPORTANT: Torque wheel lug nuts to
81.3 – 122.0 N•m (60 – 90 lb-ft).
Adjust Neutral Position
If wheel hub has excessive rotation after
checking for excessive creep, adjust neutral
position.
1. Loosen the return-to-neutral screw on the
transaxle. See Figure 32.
3. Hold the transaxle control arm in position
and tighten the return-to-neutral screw.
4. Start engine, move throttle lever to fast
position and release parking brake.
5. Move steering levers forward and
backward 5 or 6 times and then return
levers to neutral position.
6. Check wheel hubs for rotation.
• If there is only slight rotation, stop
engine, reinstall wheels, return unit to
operating position and advance to
Adjust Parking Brake Interlock on Page
30.
• If there is excessive rotation, repeat
steps 1 – 6.
IMPORTANT: Torque wheel lug nuts to
81.3 – 122.0 N•m (60 – 90 lb-ft).
ADJUST PARKING BRAKE
INTERLOCK
WARNING: AVOID INJURY.
This adjustment requires
operating the engine. Use
extreme care to avoid contact
with moving parts and hot
surfaces. Be sure unit is secure
and will not move.
If the parking brake interferes with the neutral
position of the steering levers and the
transaxles, the brake interlock may need
adjustment.
Figure 32
2. Slowly turn transaxle control arm in the
opposite direction of hub rotation until hub
stops. See Figure 33.
2
1
Check Parking Brake Interlock
1. Place unit in service position, but DO
NOT engage parking brake. Chock or
block wheels instead. See Service
Position on page 22.
2. Make sure steering levers are in neutral
position.
3. Watch the steering levers and engage
parking brake.
• If one or both steering levers move from
the neutral position, set parking brake
neutral. See Set Parking Brake Neutral
on page 31.
• If there is little to no steering lever
movement, advance to step 4.
1. Transaxle Control Arm
2. Wheel Hub
Figure 33
EN - 30
4. Start the engine and move the throttle
lever to fast position.
• If the unit creeps or the transaxles make
a whining sound, set parking brake
neutral. See Set Parking Brake Neutral
on page 31.
• If the unit doesn’t move and the
transaxles are quiet, no adjustment is
needed.
5. Stop engine, return unit to operating
position and adjust steering levers. See
Adjust Steering Levers on page 31.
Set Parking Brake Neutral
ADJUST STEERING LEVERS
Align Steering Levers
If there is more than 3.2 mm (1/8") between
the horizontal alignment of the steering
levers, align the levers.
1. Place steering levers in neutral position
and engage parking brake.
2. Stop engine, remove key and wait for all
moving parts to stop and for hot parts to
cool.
3. Loosen mounting hardware, align levers
and tighten hardware. See Figure 35.
1. Adjust transaxles. See Adjust Transaxles
on page 29.
2. Stop engine, remove key and wait for
moving parts to stop and for hot parts to
cool.
3. Release parking brake.
4. Loosen hardware retaining eccentric
spacer on the affected side(s).
5. Engage parking brake and rotate
eccentric spacer so it aligns in brake
interlock. See Figure 34.
Figure 35
Adjust Forward Position
1
2
1. Eccentric Spacer
2. Brake Interlock
Figure 34
6. Tighten eccentric spacer hardware.
7. Stop engine, return unit to operating
position and adjust steering levers. See
Adjust Steering Levers on page 31.
The steering lever forward position may be
adjusted for operator comfort.
See Figure 35.
1. Place steering levers in neutral position
and engage parking brake.
2. Stop engine, remove key and wait for
moving parts to stop and for hot parts to
cool.
3. Loosen mounting hardware on steering
lever assemblies.
4. Place steering levers in desired position:
• Gently push levers forward for greater
distance from operator.
• Gently pull levers back for closer
distance to operator.
5. Tighten hardware.
IMPORTANT: The steering levers should not
touch each other. There should be no more
than 3.2 mm (1/8") difference between the
horizontal and vertical alignment of the
levers.
EN - 31
Adjust Height
See Figure 36.
The steering lever height may be adjusted for
operator comfort.
1. Place steering levers in neutral position
and engage parking brake.
2. Stop engine, remove key and wait for
moving parts to stop and for hot parts to
cool.
3. Remove steering lever hardware and
remove steering lever from lower control
arm.
4. Position steering lever at desired height
and align with lower control arm. Secure
with original hardware.
ADJUST UNIT TO DRIVE
STRAIGHT
Adjust Tire Pressure
1. Place unit in service position. See
Service Position on page 22.
2. Check tire pressures. If needed, adjust to
recommended pressures. See
Specifications on page 44.
IMPORTANT: DO NOT inflate tires outside
recommended range.
3. Check tracking. If unit does not drive in
straight line, adjust limiter bolts. See
Adjust Limiter Bolts on page 32.
Adjust Limiter Bolts
See Figure 38.
Limiter bolts can be adjusted to increase or
decrease drive wheel speeds. To adjust:
1. Loosen jam nut.
• Turn limiter bolt counterclockwise to
increase maximum drive wheel speed
on that side.
• Turn limiter bolt clockwise to reduce
maximum drive wheel speed on that
side.
2. Tighten jam nut.
Figure 36
5. Adjust steering lever position. See Adjust
Forward Position on page 31.
6. Turn eccentric spacer so levers are at the
same height and have a 1.3 – 2.5 cm
(1/2 – 1") gap between lever ends. See
Figure 37.
Figure 38
3. Adjust steering lever position. See Adjust
Forward Position on page 31.
Figure 37
EN - 32
ADJUST PARKING BRAKE
REPLACE MOWER BELTS
Unit is equipped with two parking brake
cables that independently control parking
brake on each drive wheel.
1. Place unit in service position. See
Service Position on page 22.
2. Check parking brake. See Check Parking
Brake on page 27.
See Figure 39.
3. Loosen jam nuts on cable adjustment
barrel.
4. Adjust parking brake cable(s).
• To increase brake response on one or
both sides, loosen front jam nut(s) and
tighten rear jam nut(s).
• To decrease brake sensitivity on one or
both sides, loosen rear jam nut(s) and
tighten front jam nut(s).
5. Check parking brake and readjust if
necessary.
IMPORTANT: Make sure both parking brake
cables are within adjustment range.
CAUTION: Damaged or worn
belts may result in injury and / or
damage to the unit. Check belts
for excessive wear or cracks
often.
Remove PTO Belt
See Figure 40.
1. Place steering levers in neutral position
and engage parking brake.
2. Stop engine, remove key and wait for
moving parts to stop and for hot parts to
cool.
3. Position mower deck at lowest cutting
height.
4. Move seat to rearmost position.
5. Remove hardware securing belt covers to
deck and remove belt covers.
6. Open access panel.
1
1. Cable Adjustment Barrel
Figure 39
Figure 40
EN - 33
Remove Mower Drive Belt
CAUTION: Use care when
releasing idler spring tension.
Keep body parts away from
idlers when performing this
operation.
See Figure 42 and Figure 43.
1. Slowly remove spring hook from anchor
bolt to release tension from belt idler.
2. Remove mower drive belt.
Models 991215, 991216, 991218,
991219, 991221, 991222
See Figure 41.
7. Slowly remove spring hook from anchor
bolt to release tension from belt idler.
8. Remove PTO belt.
1
2
3
4
4
3
1.
2.
3.
4.
Spring
Anchor Bolt
Mower Drive Belt Idler
Mower Drive Belt
Figure 42
2
1.
2.
3.
4.
Spring
1
Anchor Bolt
PTO Belt Idler
PTO Belt
Figure 41
Models 991217, 991220, 991223
1
3
4
1.
2.
3.
4.
Spring
Anchor Bolt
Mower Drive Belt Idler
Mower Drive Belt
Figure 43
EN - 34
2
Install Mower Drive Belt
See Figure 44.
1. Install mower drive belt around bottom
groove of split pulley at deck center and
around bottom groove of right spindle
pulley.
2. Reinstall idler spring hook around anchor
bolt to apply tension to belt.
3
1
4
1
1
2
2
1.
2.
3.
4.
3
Idler Pulley
Split Pulley
Left Spindle Pulley
PTO Belt
Figure 45
IMPORTANT: Make sure belts are correctly
aligned in pulleys.
1. Split Pulley
2. Right Spindle Pulley
3. Mower Drive Belt
5. Reinstall belt covers and secure with
original hardware.
6. Close footboard.
Figure 44
Install PTO Belt
IMPORTANT: Mower drive belt MUST be
installed before PTO belt. See Install Mower
Drive Belt on page 35.
1. Install PTO belt around clutch sheave at
rear of unit.
See Figure 45.
2. Install PTO belt around top groove of split
pulley at deck center and around left
spindle pulley.
3. Align belt with idler pulleys.
4. Reinstall idler spring hook around anchor
bolt to apply tension to belt.
EN - 35
REPLACE TRANSAXLE DRIVE
BELT
Remove Transaxle Drive Belt
1. Place unit in service position. See
Service Position on page 22.
2. Remove PTO belt from clutch. See
Remove PTO Belt on page 33.
CAUTION: Use care when
releasing idler spring tension.
Keep body parts away from
idlers when performing this
operation.
3. Under unit, slowly remove spring hook
from anchor bolt to release transaxle idler
tension. See Figure 46.
Figure 47
5. Remove transaxle drive belt from drive
system in the following order:
a. From right transaxle sheave.
b. From left transaxle sheave.
c. From engine sheave.
Install Transaxle Drive Belt
4
3
2
1.
2.
3.
4.
See Figure 48.
1. Install transaxle drive belt to drive system
in the following order:
a. Around left transaxle sheave.
b. Around engine sheave.
c. Around right transaxle sheave.
2. Align belt with idler pulley.
1
1
Spring
Anchor Bolt
Transaxle Idler
Transaxle Drive Belt
3
Figure 46
See Figure 47.
4. Remove hardware securing clutch stop
bracket to frame and remove bracket.
2
NOTICE: DO NOT cut cable tie.
1. Right Transaxle
2. Left Transaxle
3. Idler Pulley
Figure 48
EN - 36
3. Reinstall idler spring hook onto anchor
bolt. Make sure belt has tension and is
aligned in all pulleys.
4. Reinstall clutch stop bracket and secure
with original hardware.
5. Reinstall PTO belt. See Install PTO Belt
on page 35.
4. Place pedal in desired position.
5. Reinstall hardware and torque to 71 – 95
N•m (52 – 70 lb-ft).
ADJUST ANTI-SCALP WHEELS
See Figure 49.
The anti-scalp wheels are set at the factory
for typical mowing height, but can be adjusted
for high or low cutting conditions.
1. Place steering levers in neutral position
and engage parking brake.
2. Stop engine, remove key and wait for
moving parts to stop and for hot parts to
cool.
3. Remove hardware securing anti-scalp
wheels to deck and remove wheels.
4. Position wheels as necessary:
• For a very high cutting height, set the
anti-scalp wheels in the lowest position
on the bracket.
• For a very low cutting height, set the
anti-scalp wheels in the highest position
on the bracket.
5. Secure with original hardware.
Figure 50
REMOVE / INSTALL MOWER
DECK
Remove Deck
1. Place unit in service position. See
Service Position on page 22.
NOTICE: All anti-scalp wheels MUST be set
to the same height.
WARNING: AVOID INJURY.
Springs store energy. Keep body
parts away from pinch points
when removing the deck.
2. Remove PTO belt from clutch. See
Remove PTO Belt on page 33.
WARNING: AVOID INJURY.
Mower lift arms and lift pedal
could cause severe injury if the
lift-assist springs are not
disconnected before the lift links.
Figure 49
ADJUST DECK LIFT PEDAL
See Figure 50.
1. Place steering levers in neutral position
and engage parking brake.
2. Stop engine, remove key and wait for
moving parts to stop and for hot parts to
cool.
3. Remove hardware securing deck lift
pedal to deck lift arm.
3. Push deck lift pedal completely forward to
engage transport lock.
4. Position supports such as blocks or jack
stands under each side of the deck.
5. Release transport lock and slowly lower
deck until it rests on supports.
EN - 37
6. Slowly disconnect lift-assist springs from
spring peg on each side of deck. See
Figure 51.
1
2
Install Deck
See Figure 52.
1. Position deck under unit.
2. Connect rear mounting arms to deck with
mounting pins. Secure with original
hardware.
3. Secure deck lift links to deck lift brackets
with original hardware.
4. Reinstall PTO belt around clutch. See
Install PTO Belt on page 35.
5. Push deck lift pedal completely forward to
engage transport lock.
6. Reconnect lift-assist springs to spring
pegs.
7. Level the deck. See Level and Pitch
Mower Deck on page 38.
LEVEL AND PITCH MOWER
DECK
1. Lift-Assist Spring
2. Spring Peg
Figure 51
IMPORTANT: Make sure unit is on a flat,
level surface and that tires are inflated to the
recommended pressures.
See Figure 52.
7. Remove hardware retaining deck lift links
to deck lift brackets.
8. Remove rear mounting pins securing
mounting arms to deck.
3
Check Blade Level and Pitch
1. Place steering levers in neutral position
and engage parking brake.
2. Stop engine, remove key and wait for
moving parts to stop and for hot parts to
cool.
3. Raise deck to 3 1/2" (8.9 cm) cutting
height.
See Figure 53.
4. Position mower blades so ends point left
to right across the width of the deck.
5. Measure the distance between the
ground and the cutting edge of the left
and right blades. If the measurements are
not within 4.7 mm (3/16") of each other,
level the deck. See Level Mower Deck on
page 39.
2
1
1. Mounting Pin
2. Deck Lift Link
3. Mounting Arm
Figure 53
Figure 52
9. Slide deck out from under unit.
EN - 38
See Figure 54.
6. Position mower blades so ends point
front to back and measure the following:
• At the front of the deck, measure the
distance between the ground and the
cutting edge of the middle blade.
• At the rear of the deck, measure the
distance between the ground and the
cutting edge of the left and the right
blades.
Raise
Lower
1
2
3
Figure 54
If the front measurement is not 3.2 mm (1/8")
lower than the rear measurements, adjust the
blade pitch. See Adjust Blade Pitch on
page 39.
Level Mower Deck
See Figure 55.
1. Lower the high side of deck:
a. Loosen jam nuts against deckleveling links.
b. Turn adjustment bolts
counterclockwise.
c. Measure distance between the
ground and cutting edges of left and
right blades. Continue adjustment if
necessary.
d. Tighten jam nuts against deckleveling links.
2. Raise the low side of deck:
a. Loosen jam nuts against deckleveling links.
b. Turn adjustment bolts clockwise.
c. Measure distance between the
ground and cutting edges of left and
right blades. Continue adjustment if
necessary.
d. Tighten jam nuts against deckleveling links.
1. Adjustment Bolt
2. Jam Nut
3. Deck-Lift Link
Figure 55
Adjust Blade Pitch
IMPORTANT: Side-to-side deck heights
MUST remain level even after completing
pitch adjustment.
IMPORTANT: Pitching the front of the blades
lower than the rear provides a balance
between cut quality and the power needed to
cut grass. Certain cutting conditions require
the deck rear to be pitched lower than the
front. Positioning the deck this way requires
more engine power but can provide better cut
quality.
1. Increase forward pitch:
a. Loosen jam nuts against all deckleveling links.
b. Turn front adjustment bolts
counterclockwise to lower deck front.
c. Turn rear adjustment bolts clockwise
to raise deck rear.
d. Check adjustment. See Check Blade
Level and Pitch on page 38.
e. Tighten jam nuts against deckleveling links.
2. Decrease forward pitch:
a. Loosen jam nuts against all deckleveling links.
b. Turn front adjustment bolts clockwise
to raise deck front.
c. Turn rear adjustment bolts
counterclockwise to lower deck rear.
EN - 39
d. Check adjustment. See Check Blade
Level and Pitch on page 38.
e. Tighten jam nuts against deckleveling links.
4
ADJUST CLUTCH
NOTICE: Adjust clutch every 500 hours or
once per season if used less than 500 hours.
3
See Figure 56.
If clutch operates incorrectly or sounds
abnormal, check the gap at the three
inspection slots.
1
Check Clutch
1. Place unit in service position. See
Service Position on page 22.
2. Measure gap between the armature and
rotor:
• A 0.4 – 0.5 mm (0.016 – 0.020") feeler
gauge should fit between the armature
and rotor and make slight contact with
each.
3. Repeat measurement for remaining
inspection slots.
4. If gap is within range, no adjustment is
needed.
1.
2.
3.
4.
Adjust Clutch
1. Place unit in service position. See
Service Position on page 22.
2. Loosen adjustment nut until a
0.5 mm (0.020") feeler gauge fits between
armature and rotor.
3. Tighten adjustment nut until armature and
rotor make slight contact with feeler
gauge.
4. Repeat at remaining inspection slots.
NOTICE: Air gap MUST be even at all
inspection slots.
EN - 40
Inspection Slot
Armature
Rotor
Gap Adjustment Nut
Figure 56
2
TROUBLESHOOTING
Problem
Probable Cause
Correction
Push PTO switch down to off
PTO switch is in the on position. position. See Power Take-off (PTO)
Switch on page 16.
Parking brake is released.
Engine does not
start.
Fuel tank is empty.
Fill fuel tank. See Before Operation
on page 18.
Fuel supply is contaminated.
Replace with clean fuel.
Battery is not charged.
Charge battery. See Charge Battery
on page 28.
Battery cables are loose or
corroded.
Clean and tighten cables. See Clean
Battery on page 28.
Spark plug wire(s) are loose or
spark plug(s) are faulty.
Connect spark plug wire(s) or
replace spark plug(s). Refer to
engine manual.
Safety Interlock System is not
engaged or is faulty.
Check Safety Interlock System. See
Safety Interlock System on page 17.
Electrical system is faulty.
Contact your Gravely dealer.
Engine is faulty.
Contact your Gravely dealer.
Choke control lever is engaged.
Move lever to off position. See
Choke Control Lever on page 16.
Fuel tank is empty.
Fill fuel tank. See Before Operation
on page 18.
Spark plug is faulty.
Replace spark plug. Refer to engine
manual.
Fuel filter is dirty.
Clean or replace filter. Refer to
engine manual.
Air filter cartridge is plugged.
Clean or replace air filter cartridge.
Refer to engine manual.
Engine is faulty.
Contact your Gravely dealer.
Engine oil level is low.
Add engine oil. Refer to engine
manual.
Cooling fins are plugged.
Clean engine. Refer to engine
manual.
Engine is faulty.
Contact your Gravely dealer.
Engine runs rough.
Engine overheats.
Engage parking brake. See Parking
Brake Lever on page 18.
Engine runs when Ignition ground wire is
ignition key is in the disconnected.
off position.
Ignition switch is faulty.
EN - 41
Connect ground wire to clean, metal
surface.
See your Gravely dealer.
Parking brake is engaged.
Release parking brake. See Parking
Brake Lever on page 18.
Transaxles are bypassed.
Return transaxle bypass levers to
operating position. See Move Unit
Manually on page 22.
Unit does not drive. Transaxle drive belt is faulty.
Transaxles are faulty.
Replace transaxle drive belt. See
Replace Transaxle Drive Belt on
page 36.
Contact your Gravely dealer.
Transaxle drive system is faulty. Contact your Gravely dealer.
PTO does not work.
Unit moves with
engine off and
parking brake
engaged.
Hydraulic oil level is low.
Add hydraulic oil. See Check
Hydraulic System on page 24.
Operator presence switch is not
engaged.
Activate switch by sitting on seat.
Operator presence switch is
faulty.
Contact your Gravely dealer.
PTO belt is faulty.
Replace PTO belt. See Replace
Mower Belts on page 33.
PTO switch, wiring, connectors
or clutch are faulty.
Contact your Gravely dealer.
Parking brake is faulty.
Contact your Gravely dealer.
Tire pressure is incorrect.
Check tire pressure. See
Specifications on page 44.
Unit does not drive
straight.
Steering levers need adjustment. See Adjust Unit to Drive Straight on
page 32.
Unit creeps when
steering levers are
in neutral position.
Transaxles need adjustment.
See Adjust Transaxles on page 29.
Parking brake interlock needs
adjustment.
See Adjust Parking Brake Interlock
on page 30.
Mower blades not level or mower Level and adjust pitch of mower
deck pitch is incorrect.
deck. See Level and Pitch Mower
Deck on page 38.
Unit has poor
cutting quality.
Mower blades are dull or faulty.
Sharpen or replace mower blades.
See Sharpen Blades on page 27.
Mowing speed is too fast.
Drive slower when cutting grass.
Belt tension or condition is poor. Replace PTO belt or mower drive
belt. See Replace Mower Belts on
page 33.
Cutting height is too low.
Oil pressure light is Oil pressure is low.
illuminated.
Do not set height of cut too low. For
very tall grass, mow twice.
Stop engine immediately and refer to
engine manual.
EN - 42
START-OF-SEASON
PREPARATION
STORAGE
WARNING: AVOID INJURY.
Read and understand the Safety
section before proceeding.
1. Before adding fuel for the first time after
long-term storage, add fresh, stabilizertreated fuel to fuel tank and any fuel
containers with remaining fuel.
2. Charge and install the battery.
SHORT-TERM STORAGE
ACCESSORIES
IMPORTANT: NEVER wash unit with highpressure water or store outdoors.
See your Gravely dealer for a complete list of
compatible accessories and attachments for
your unit.
1. Allow unit to cool and clean with mild
soap and water.
2. Tighten all hardware to correct
specifications.
3. Inspect unit for visible signs of wear or
damage. Repair as needed.
4. Prepare fuel system for storage.
NOTICE: Gravely recommends using a
quality fuel stabilizer in all fuel. Gasoline left
in the fuel system without a stabilizer, even
for short periods of time, deteriorates and
leaves gummy deposits in the system that
may cause damage. For the best
effectiveness, add stabilizer to all fuel
containers whenever purchasing fuel. Add
the stabilizer to the container before adding
fuel.
a. Add Gravely fuel stabilizer (see
Service Parts on page 24) or
equivalent according to
manufacturer's instructions to the fuel
tank and any fuel containers with
remaining fuel.
b. Operate engine outdoors for at least
5 minutes to allow stabilizer to reach
the carburetor.
5. Close fuel valve and allow engine to stop
on its own.
6. Turn key to off position and remove from
ignition.
7. Store unit in a cool, dry, protected area.
DO NOT store unit outdoors.
LONG TERM STORAGE
Description
Part No.
48" Discharge Cover Kit
79104200
52" Discharge Cover Kit
79104300
60" Discharge Cover Kit
79213400
12" Gravely Hub Cap Kit
(Set of 2)
79102100
Solid Front Tire Kit
79103300
Hitch Kit
79215800
Work Light Kit
79216200
Mulching Kit 48" Decks
79105700
Mulching Kit 52" Decks
79105800
Mulching Kit 60" Decks
79105900
True Power Wheel / Tire Kit
79200700
Lawn Striper Kit
79206700
6" Wheel Covers (Set of 2)
79210600
Sun Shade Kit
79212600
Bagger Kits*
Base Kit
89100700
• Kit for 48" Decks
79106000
• Kit for 52" Decks
79106100
• Kit for 60" Decks
79106200
*Bagger kits are ordered in two parts.
Complete baggers require Base Kit
89100700 plus the kit matching the deck size
of the unit.
1. Perform short-term storage procedures.
2. Lubricate as directed in Maintenance on
page 22.
3. Touch-up all scratched painted surfaces.
4. Remove and charge battery as directed
in Charge Battery on page 28. Store
battery in a cool, dry, protected area.
5. Store unit in a cool, dry, protected area.
DO NOT store unit outdoors.
EN - 43
SPECIFICATIONS
Model Number
Description
Engine
Displacement – cm3 (in3)
Maximum RPM – No Load
Oil Capacity
Liquid or Air Cooled
Electrical
Starter
Battery
PTO (Power Take-off)
Fuel
Tank Capacity – liter (gal)
Type
Transmission
Type
Oil
Hydraulic Oil Filter
Drive Speed
Forward Maximum – km/h (mph)
Reverse Maximum – km/h (mph)
Turning Radius
Brakes
Mower Deck
Cutting Height – cm (in)
Cutting Height Increments – cm (in)
Cutting Width – cm (in)
Deck Lift
Size and Weight
Length – cm (in)
Width – cm (in)
• Discharge Chute Down
• Discharge Chute Up
Height – cm (in)
• with ROPS extended
• with ROPS folded
Weight – kg (lb)
Tires
Front Tire Size – in
Rear Tire Size – in
Recommended Front Tire Pressure
– kPa (psi)
Recommended Rear Tire Pressure –
kPa (psi)
991215
991216
Pro-Turn 48
Pro-Turn 52
Kawasaki FS691
991217
Pro-Turn 60
Kawasaki FS730
726 (44.3)
3600 ±100
Refer to engine manual.
Air
Electric
12-Volt Maintenance-Free, 300 CCA 10U1L
Electric PTO Clutch / Brake
37.9 (10)
Refer to engine manual.
Hydrostatic Drive
Use 15W-50 synthetic motor oil
(Gravely p/n 00057100) or equivalent
Yes
14.5 (9.0)
8.0 (5.0)
Zero
Parking
2.5 – 12.7 (1.0 – 5.0)
0.635 (0.25)
122.0 (48.0)
132.0 (52.0)
152.4 (60.0)
Mechanical Pin Lock
199.4 (78.5)
157.5 (62.0)
127.0 (50.0)
171.5 (67.5)
141.0 (55.5)
190.5 (75.0)
160.0 (63.0)
437.3 (964.0)
172.7 (68.0)
123.2 (48.5)
443.2 (977.0)
456.3 (1006.0)
13 x 6.5-6
22 x 10-10
83 – 103 (12 – 15)
83 – 103 (12 – 15)
EN - 44
SPECIFICATIONS
Model Number
Description
Engine
Displacement – cm3 (in3)
Maximum RPM – No Load
Oil Capacity
Liquid or Air Cooled
Electrical
Starter
Battery
PTO (Power Take-off)
Fuel
Tank Capacity – liter (gal)
Type
Transmission
Type
Oil
Hydraulic Oil Filter
Drive Speed
Forward Maximum – km/h (mph)
Reverse Maximum – km/h (mph)
Turning Radius
Brakes
Mower Deck
Cutting Height – cm (in)
Cutting Height Increments – cm (in)
Cutting Width – cm (in)
Deck Lift
Size and Weight
Length – cm (in)
Width – cm (in)
• Discharge Chute Down
• Discharge Chute Up
Height – cm (in)
• with ROPS extended
• with ROPS folded
Weight – kg (lb)
Tires
Front Tire Size – in
Rear Tire Size – in
Recommended Front Tire Pressure – kPa
(psi)
Recommended Rear Tire Pressure – kPa
(psi)
991218
991219
Pro-Turn 48
Pro-Turn 52
Kohler ZT730
991220
Pro-Turn 60
Kohler ZT740
725 (44.2)
747 (45.6)
3650 ±75
Refer to engine manual.
Air
Electric
12-Volt Maintenance-Free, 300 CCA 10U1L
Electric PTO Clutch / Brake
37.9 (10)
Refer to engine manual.
Hydrostatic Drive
Use 15W-50 synthetic motor oil
(Gravely p/n 00057100) or equivalent
Yes
14.5 (9.0)
8.0 (5.0)
Zero
Parking
2.5 – 12.7 (1.0 – 5.0)
0.635 (0.25)
122.0 (48.0)
132.0 (52.0)
152.4 (60)
Mechanical Pin Lock
199.4 (78.5)
157.5 (62.0)
127.0 (50.0)
171.5 (67.5)
141.0 (55.5)
190.5 (75.0)
160.0 (63.0)
432.3 (953.0)
172.7 (68.0)
123.2 (48.5)
438.2 (966.0)
451.3 (995.0)
13 x 6.5-6
22 x 10-10
83 – 103 (12 – 15)
83 – 103 (12 – 15)
EN - 45
SPECIFICATIONS
Model Number
Description
Engine
Displacement – cm3 (in3)
Maximum RPM – No Load
Oil Capacity
Liquid or Air Cooled
Electrical
Starter
Battery
PTO (Power Take-off)
Fuel
Tank Capacity – liter (gal)
Type
Transmission
Type
Oil
Hydraulic Oil Filter
Drive Speed
Forward Maximum – km/h (mph)
Reverse Maximum – km/h (mph)
Turning Radius
Brakes
Mower Deck
Cutting Height – cm (in)
Cutting Height Increments – cm (in)
Cutting Width – cm (in)
Deck Lift
Size and Weight
Length – cm (in)
Width – cm (in)
• Discharge Chute Down
• Discharge Chute Up
Height – cm (in)
• with ROPS extended
• with ROPS folded
Weight – kg (lb)
Tires
Front Tire Size – in
Rear Tire Size – in
Recommended Front Tire Pressure – kPa
(psi)
Recommended Rear Tire Pressure – kPa
(psi)
991221
Pro-Turn 48
CARB
991222
Pro-Turn 52
CARB
991223
Pro-Turn 60
CARB
Kawasaki
FS730 CARB
Kawasaki FS691 CARB
726 (44.3)
3600 ±100
Refer to engine manual.
Air
Electric
12-Volt Maintenance-Free, 300 CCA 10U1L
Electric PTO Clutch / Brake
37.9 (10)
Refer to engine manual.
Hydrostatic Drive
Use 15W-50 synthetic motor oil
(Gravely p/n 00057100) or equivalent
Yes
14.5 (9.0)
8.0 (5.0)
Zero
Parking
2.5 – 12.7 (1.0 – 5.0)
0.635 (0.25)
122.0 (48.0)
132.0 (52.0)
152.4 (60)
Mechanical Pin Lock
199.4 (78.5)
157.5 (62.0)
127.0 (50.0)
171.5 (67.5)
141.0 (55.5)
190.5 (75.0)
160.0 (63.0)
439.5 (969.0)
172.7 (68.0)
123.2 (48.5)
445.2 (982.0)
458.6 (1011.0)
13 x 6.5-6
22 x 10-10
83 – 103 (12 – 15)
83 – 103 (12 – 15)
EN - 46
Commercial Mowing
Equipment Limited Warranty
Warranty
Ariens Company (Ariens) warrants to the original purchaser that Ariens, Gravely and Countax
brand products purchased on or after 9/1/2016 and designated or labeled commercial products
by Ariens Company will be free from defects in material and workmanship for the time period
noted in the chart below. Equipment put to personal use around a single household or
residence is considered "Consumer Use"; equipment put to any business use (agricultural,
commercial, or industrial) or used at multiple locations is considered "Commercial Use" If any
product is rented or leased, then the duration of these warranties shall be 90 days after the date
of purchase.
An authorized Ariens dealer (Ariens brand products), Gravely dealer (Gravely brand products),
or Countax dealer (Countax brand products) will repair any defect in material or workmanship,
and repair or replace any defective part, subject to the conditions, limitations and exclusions set
forth herein. Such repair or replacement will be free of charge (labor and parts) to the original
purchaser except as noted below.
Warranty
Code
Product Group
Warranty Period
Consumer Use
Warranty Period
Commercial Use
CA
Pro-Turn 100 & 200, Pro-Master,
Compact-Pro, Pro-Stance,
Pro-Ride, Pro-Walk Mowers,
Pro-Zoom, etc.
3 Years
2 Years
CC
Pro 20 Series Walk-Behind
Mowers, Commercial 21
3 Years
1 Year
N/A
Service (replacement) Parts
90 Days (no labor)
90 Days (no labor)
3 Years
3 Years (Years 1 & 2:
Parts & Labor, Year 3:
Parts Only)
CD
Pro-Turn 400
CF
Pro-Turn
3 Years
2 Years or 1000 Hours
CG
Two-Wheel Tractor
2 Years
2 Years
AA
Serialized Attachments
1 Year
1 Year
AB
Serialized Attachments
2 Years
2 Years
Special Extensions
The chart below details special extensions to this warranty:
Warranty
Code
Warranty Exception
Warranty
Period
Use
Detail
CA, CD
Mower Deck Shell on
Commercial Mowers
Lifetime
All
2 Years parts and labor
(Commercial), 3 Years parts and
labor (Consumer), parts-only
thereafter.
CA, CD
Main Frame on
Commercial Mowers
Lifetime
All
2 Years parts and labor
(Commercial), 3 Years parts and
labor (Consumer), parts-only
thereafter.
CA, CD
Cast Iron Deck
Spindles
3 Years
All
3 Years for all users including
Commercial.
EN - 47
Commercial_2017
Exceptions and Limitations
The chart below details special exceptions to this warranty:
Warranty
Warranty Exception
Code
All
Batteries
All
Belts, Muffler, Tires
All
Cloth, Plastic, and
Rubber Components
(Including Belts and
Cables)
All
Engines
Warranty
Period
Use
1 Year
All
Detail
Prorated
These components are not
Commercial
covered when used commercially.
None
Maximum
2 Year
All
Warranty is limited to 2 years for
consumer use. Except as noted
above, these components are
covered for defect, not for wear.
See Engine
Manufacturer’s
Warranty
All
Engines are covered by engine
manufacturer’s warranty. Refer to
engine manufacturer’s warranty
statement.
Customer Responsibilities
Register the product immediately at the time of sale. If the dealer does not register the
product, the customer must complete the product registration card in the literature package and
return it to the Ariens Company, or register the unit online at www.ariens.com,
www.gravely.com, www.countax.com.
To obtain warranty service, the original purchaser must:
• Perform the maintenance and adjustments explained in the owner's manual.
• Promptly notify Ariens or an authorized Ariens, Gravely or Countax service representative of
the need for warranty service.
• Transport the product to and from the place of warranty service at owner's expense.
• Have the warranty service performed by an authorized Ariens, Gravely or Countax service
representative.
To Find an Authorized Service Representative:
In the U.S. and Canada:
Use the dealer locator on our websites:
www.ariens.com
•
www.gravely.com
Or contact us by mail or by phone:
In the U.S., Canada, Mexico,
Caribbean, Central and South In Europe, Asia, Africa or
the Middle East:
America:
Ariens Company
655 W. Ryan Street
Brillion, WI 54110
Phone: (920) 756 - 4688
www.ariens.com
Ariens Company Limited
Great Haseley,
Oxford OX44 7PF
United Kingdom
Phone: +44 800 597 7777
www.countax.co.uk
In Australia or New
Zealand:
Allpower Industries Pty Ltd
128 Bridge Rd
Keysborough VIC 3173
Australia
Phone: +61 1800 333 428
www.allpower.com.au
Exclusions – Items Not Covered by This Warranty
• Parts that are not genuine Ariens, Gravely or Countax service parts are not covered by this
warranty and may void the warranty.
• Damages resulting from the installation or use of any part, accessory, or attachment which is
not approved by the Ariens Company for use with product(s) identified herein are not
covered by this warranty.
• The following maintenance, service and replacement items are not covered by this warranty
unless they are noted in the Limitations section above: lubricants, spark plugs, oil, oil filters,
air filters, fuel filters, brake linings, brake arms, brake shoes, skid shoes, scraper blades,
shear bolts, mower blades, mower vanes, brushes, headlights, light bulbs, knives, cutters.
• Any misuse, alteration, improper assembly, improper adjustment, neglect, or accident which
requires repair is not covered by this warranty.
• Use of gasoline blends exceeding 10% ethanol voids any and all warranties.
EN - 48
Commercial_2017
• Products are designed to the specifications in the area that the product was originally
distributed. Different areas may have significantly different legal and design requirements.
This warranty is limited to the requirements in the area in which the unit was originally
distributed. Ariens Company does not warrant this product to the requirements of any other
area. Warranty service is limited to service within the area originally distributed.
• In countries other than the United States and Canada, contact the Ariens Company dealer
for warranty policies that govern within your country. Rights may vary from country to
country and within any one country.
Disclaimer
Ariens Company may from time to time change the design of its products. Nothing contained in
this warranty shall be construed as obligating the Ariens Company 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
Ariens Company's liability under this warranty, and under any implied warranty that may exist,
is limited to repair of any defect in workmanship, and repair or replacement of any defective
part. Ariens Company shall not be liable for incidental, special, or consequential damages
(including lost profits). Some states do not allow the exclusion of incidental or consequential
damages, so the above limitation or exclusion may not apply to you.
AUSTRALIAN CONSUMER LAW
The following applies solely to warranties subject to Subsection 102(1) of the Australian
Consumer Law: Our goods come with guarantees that cannot be excluded by the Australian
Consumer Law. You are entitled to a replacement or refund for a major failure and for
compensation for any other reasonably foreseeable loss or damage. You are also entitled to
have the goods repaired or replaced if the goods fail to be of acceptable quality and failure
does not amount to a major failure.
DISCLAIMER OF FURTHER WARRANTY
Ariens Company makes no warranty, express or implied, other than what is expressly
made in this warranty. If the law of your state provides that an implied warranty of
merchantability, or an implied warranty of fitness for particular purpose, or any other
implied warranty, applies to Ariens Company, then any such implied warranty is limited
to the duration of this warranty. Some states do not allow limitations on how long an
implied warranty lasts, so the above limitation may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary
from region to region.
EN - 49
Commercial_2017
655 West Ryan Street
Brillion, WI 54110
gravelymower.com
gravely.custhelp.com
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