Kubota G18 User manual

ENGLISH
PRINTED IN U.S.A.
IMPRIME AU U.S.A.
DRUCK : U.S.A.
G
1
8
á
G
2
1
MODELS
MODELLES G18
MODELLE G21
Code No. K2143-7122-7

ENGLISH
ABBREVIATION LIST
Abbreviations
API
PTO
PT
rpm
SAE
Definitions
American Petroleum Institute
Power Take Off
Permanent Type (=Ethylene glycol anti-freeze)
Revolutions Per Minute
Society of Automotive Engineers
UNIVERSAL SYMBOLS
As a guide to the operation of your tractor, various universal symbols have been utilized on the instruments and
controls. The symbols are shown below with an indication of their meaning.
3Safety Alert Symbol
RDiesel Fuel
TFuel-Level
Brake
Parking Brake
cEngine-Stop
Preheat
vEngine-Run
Starter Control
iPower Take-Off Clutch Control-Off Position
uPower Take-Off Clutch Control-On Position
Cutting Height
Mower-Lowered position
Mower-Raised position
99
99
9Headlight
Headlight-ON
ff
ff
fHeadlight-OFF
jFast
kSlow
Engine Speed Control
gBattery
lOil Pressure
zCoolant Temperature
Grass Container-Lowered position
Grass Container-Raised position

ENGLISH
3 SAFETY FIRST
This symbol, the industry’s “Safety Alert Symbol”, is used throughout this
manual and on labels on the machine itself to warn of the possibility of personal
injury. Read these instructions carefully. It is essential that you read the
instructions and safety regulations before you attempt to assemble or use this unit.
3DANGER : Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
3WARNING : Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
3CAUTION : Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
IMPORTANT : Indicates that equipment or property damage could result if
instructions are not followed.
NOTE : Gives helpful information.
FOREWORD
You are now the proud owner of a KUBOTA RIDING MOWER. This machine is a
product of KUBOTA’s quality engineering and manufacturing. It is made of fine
materials and under a rigid quality control system. It will give you long,
satisfactory service. To obtain the best use of your riding mower, please read
this manual carefully. It will help you become familiar with the operation of the
machine and contains many helpful hints about riding mower maintenance. It
is KUBOTA’s policy to utilize, as quickly as possible, every advance in our
research. The immediate use of new techniques in the manufacturing of
products may cause some small parts of this manual to be outdated. KUBOTA
distributors and dealers will have the most up-to-date information. Please do
not hesitate to consult them.

ENGLISH
CONTENTS
3SAFE OPERATION ............. 1
SERVICING OF RIDING MOWER ................ 9
SPECIFICATIONS ....................................... 10
IMPLEMENT LIMITATIONS ...................... 41
INSTRUMENT PANEL AND CONTROLS . 44
MOWER MOUNTING ................................ 58
ATTACHING THE MOWER ................... 58
ADJUSTING
THE PARALLEL LINKAGE ................ 62
ADJUSTING THE MOWER DECK
(SIDE-TO-SIDE) ................................. 62
ADJUSTING THE MOWER
LIFTUP STOPPER ............................. 64
GRASS CATCHER MOUNTING .............. 66
ATTACHING THE GRASS CATCHER ... 66
OPERATING THE ENGINE ........................ 72
STARTING THE ENGINE....................... 72
CHECKING SAFETY DEVICES .............. 76
CHECK WHILE OPERATING
THE ENGINE ..................................... 78
STOPPING THE ENGINE....................... 78
WARMING UP ....................................... 78
JUMP STARTING .................................. 80
DRIVING THE RIDING MOWER ................ 84
DRIVING ................................................. 84
STOPPING ............................................. 84
PARKING................................................ 86
TOWING................................................. 86
OPERATING THE MOWER ........................ 88
ADJUSTING CUTTING HEIGHT ........... 88
OPERATING THE MOWER ................... 90
OPERATING THE GRASS CATCHER ........ 92
OPERATING PERFORMANCE .............. 92
EMPTYING THE GRASS CATCHER ..... 94
CLEANING .................................................. 96
CLEANING WITH WATER ..................... 96
CLEANING THE GRASS
CATCHING CONTAINER .................. 96
CLEANING THE MOWING SYSTEM .... 96
CLEANING THE MOWING SYSTEM
USING HOSE .................................... 98

ENGLISH
MAINTENANCE ....................................... 100
DAILY CHECK ...................................... 100
SERVICE INTERVAL ............................ 101
LUBRICANTS AND OTHER FLUID ..... 102
SERVICE ITEMS ....................................... 112
TIRES.................................................... 112
HOW TO OPEN THE HOOD ................ 114
ENGINE OIL ......................................... 114
ENGINE OIL FILTER CARTRIDGE ....... 116
TRANSMISSION FLUID ...................... 118
TRANSMISSION OIL
FILTER CARTRIDGE ....................... 120
TRANSMISSION OIL STRAINER ........ 122
HYDRAULIC HOSE .............................. 122
FUEL ..................................................... 124
FUEL LINES AND FUEL FILTER.......... 126
RADIATOR ........................................... 128
COOLANT ............................................ 130
AIR CLEANER ...................................... 138
FAN BELT TENSION ........................... 140
FRONT PTO BELT TENSION .............. 140
BRAKE .................................................. 142
GREASING ........................................... 144
OILING ................................................. 146
BATTERY ............................................. 152
MOWER BLADE................................... 158
MOWER BELT...................................... 160
GRASS CONTAINER
NET MATERIAL ............................... 162
GENERAL TORQUE
SPECIFICATION .............................. 166
TIGHTENING TORQUE CHART .......... 166
STORAGE ................................................. 167
TROUBLESHOOTING .............................. 168
ENGINE TROUBLESHOOTING ........... 168
BATTERY TROUBLESHOOTING ........ 169
POWER STEERING
TROUBLE SHOOTING .................... 169
MACHINE TROUBLESHOOTING........ 169
MOWER TROUBLESHOOTING .......... 170
GRASS CATCHER
TROUBLESHOOTING ..................... 171
OPTION .................................................... 171

ENGLISH

Safe Operation 1
ENGLISH
3 SAFE OPERATION
15. Never allow passengers or non-qualified
operators on the machine at any time. You must
operate the machine from the seat only.
16. Keep your machine clean. Dirt, grease, and trash
accumulations contribute to fires or lead to
personal injury.
17. Keep all nuts, bolts, and screws tight to be sure
the equipment is in safe working condition.
Check the mower blade mounting bolts for proper
tightness at frequent intervals. On multi-bladed
mowers, take care as rotating one blade can
cause other blades to rotate.
18. Use only implements recommended by KUBOTA.
Use proper ballast to front or rear of machine to
reduce the risk of upsets. Follow the “Safe
Operation” procedures, specified in the
Equipment’s Manual.
19. Follow the maintenance recommendations. See
“MAINTENANCE “ section.
20. It is recommended that your machine be
thoroughly inspected at least once a year by an
authorized KUBOTA Dealer.
2. OPERATING
쏆Starting
1. Never start engine or operate levers from
anywhere other than the seat.
2. Before starting the engine, make sure that all
levers (including auxiliary control levers) are in
their neutral positions, that the parking brake is
engaged, and that both the mower clutch and the
Power Take-Off (PTO) are disengaged.
3. Do not start engine by shorting across starter
terminals or by by-passing the safety start switch.
The machine may start and move if normal
starting circuitry is bypassed.
4. Do not operate or idle engine in a poorly
ventilated area. Exhaust contains poisonous
carbon monoxide, a colorless and odorless gas.
쏆Working
1. Watch where you are going at all times. Watch for
and avoid obstacles. Be alert near trees and other
obstructions.
2. When working in groups, always let others know
what you are doing ahead of time.
Careful operation is your best insurance against an accident. Read and understand this section carefully before
operation. All operators, no matter how experienced they may be, should read this and other related manuals
before operation of the machine or any implement attached to it. It is the owner’s obligation to instruct all
operators in safe operation.
This cutting machine is capable of amputating hands and feet and throwing objects. Failure to observe the
following safety instructions could result in serious injury or death.
1. BEFORE OPERATING
1. Know your equipment and its limitations. Read,
understand and follow all instructions in this
manual before attempting to start and operate the
machine.
2. Know the controls and how to stop quickly.
3. Pay special attention to the safety labels on the
machine and mower.
4. The exhaust gas from the muffler is very hot. To
prevent fire, do not expose dry grass, mowed
grass, oil or any other combustible materials to
exhaust gas. Use a spark arrester where required.
Also keep the engine and muffler clean all the
time. Replace the muffler if it has a fault.
5. Never wear loose, torn, or bulky clothing. lt may
catch on moving parts or controls, leading to the
risk of accident. Safety boots or shoes, eye and
hearing protection, gloves, dust mask, etc. are
recommended.
6. While mowing, always wear substantial foot wear
and long trousers. Do not operate the equipment
when barefoot or wearing open sandals.
7. Do not operate machine or any implement
attached to it while under the influence of alcohol,
drugs, or other substances or while fatigued.
8. Check brakes, and other mechanical parts for
faulty adjustment and wear. Replace worn or
damaged parts promptly. Check the tightness of
all nuts and bolts regularly. (For further details,
see “MAINTENANCE” section.)
9. Keep the machine and attachments in good
operating condition and keep safety devices in
place and in proper working condition.
10. This machine is equipped with many safety
devices. Do not attempt to remove or alter them.
11. Keep all shields and guards in place. Replace all
missing or damaged items for your safety.
12. Never allow any bystanders around or near
machine during operation.
Be sure the area is clear of other people before
mowing.
Stop machine if anyone enters the area.
13. Carefully check the area to be mowed and clear
any objects such as rocks, bottles, cans, toys, etc.,
that may damage the mower, the grass catcher or
cause personal injury.
14. Before allowing other people to use your
machine, explain proper operation to them and
have them read this manual before operation.

Safe Operation
2
ENGLISH
3. Never try to get on or off a moving machine.
4. When using any attachments, never direct
discharge material toward bystanders. Do not
allow anyone near the attachments while in
operation.
Do not mow when bystanders are present in the
mowing area.
5. To reduce fire hazards, keep the engine exhaust
area free of grass or leaves.
6. Slow down before turning.
7. Turn off blades when not mowing.
8. Mow only in daylight.
9. Be sure rotating blades and engine are stopped
and the key is removed before placing hands or
feet near blades and cleaning blockages or
unclogging chute.
10. Shut the engine off and wait for all movement to
stop before unclogging chute.
11. Know what is behind you and disengage power to
mower before backing up. Do not mow while in
reverse unless absolutely necessary and only
after observation of the entire area behind the
mower.
12. When mowing for the first time, cut the grass
higher than desired.
This will uncover any unseen object that may
damage the mower or grass catcher.
13. Always inspect the mower and grass catcher after
striking any foreign object. This will insure that all
mower and grass catcher parts are safe and
secure and not damaged.
Repair or replace any damaged parts before re-
starting.
14. Use only attachment recommended in this
manual. Use proper ballast to front or rear of
machine to reduce the risk of upsets. Follow the
"SAFE OPERATION" procedures specified in the
manuals included with the equipment.
15. Do not operate the mower without either the
grass container or the guard in place.
Be aware of the mower discharge direction and
do not point it at anyone.
16. Watch for traffic when operating near or crossing
roadways.
17. Stop the blades rotating before crossing surface
other than grass.
18. Never leave a running machine unattended.
Always turn off blades, set parking brake, stop
engine, and remove the key before dismounting.
19. Do not operate where machine could tip or slip.
Do not operate near ditches, holes,
embankments, or other terrain which may
collapse under the machine’s weight. The risk of
machine tip-over is increased when the ground is
loose or wet.
20. Raise and dump collected leaves or grass
clippings ONLY while sitting on the operator’s
seat.
21. Empty the grass container ONLY from a firm and
level surface, with the mower stopped, and the
unit stationary. Dumping the grass container on
soft or uneven ground, or while moving, could
cause the unit to tip over, causing serious injury
and extensive equipment damage.
22. Make sure the dumping area is clear of all
bystanders and pets, before emptying grass
clippings or leaves from the grass container.
23. Be extremely alert for all other traffic when
operating the mower and grass catcher near
public roads or highways.
24. If the machine starts to vibrate abnormally,
disengage the drive to the attachments, stop the
engine and remove the key. Then check the
machine immediately.
For High-Dump grass cathcher.
25. With the grass container raised, do not run the
machine too fast, on slopes, nor make a sharp
turn. Otherwise the machine may turn over.
26. Keep hands away from the grass container, while
lowering it. Otherwise they may get caught.
쏆Pulling loads
Use extra care when pulling loads to reduce the risk of
serious personal injury or death due to a machine tip-
over.
a) Pull only from the hitch. Never attach loads to the
axle housing or any other point above hitch.
b) Limit loads to those you can safely control.
c) Do not turn sharply.
d) Use care when backing.
e) Use front ballast or wheel weights when
suggested in this Operator's Manual.
쏆Operation on slopes
Slopes are a major factor related to loss-of-control
and tip-over accidents, which can result in severe
injury or death. All slopes require extra caution. If you
cannot back up the slope or if you feel uneasy on it, do
not mow it. The control of a ride-on machine sliding
on a slope will not be regained by the application of
the brake.
¡Do not lift the grass container on a slope.

Safe Operation 3
ENGLISH
DO
1. Mow up and down slopes, not across, to avoid
machine tip-over. Stay off hills and slopes too
steep for safe operation.
2. Remove obstacles such as rocks, tree limbs, etc.
3. Stay alert for holes in the terrain and other hidden
hazards. Keep away from drop-offs. Uneven
terrain could overturn the machine. Tall grass can
hide obstacles.
4. Use slow speed.
5. Follow KUBOTA’s recommendations for wheel
weights or counterweights to improve stability.
6. The weight of grass in the grass container may
increase the possibility of tip over.
7. Keep all movement on slopes slow and gradual.
Do not make sudden changes in speed or
direction.
8. Avoid starting or stopping on a slope. If tires lose
traction, disengage the blades and proceed
slowly straight down the slope.
9. If the machine stops going uphill, disengage PTO
and back slowly down.
10. Reduce speed and exercise extreme caution on
slopes and in sharp turns to prevent tip-over or
loss of control.
11. Use special caution when changing direction on
slopes.
DO NOT
1. Do not turn on slopes unless necessary and then
turn slowly and gradually downhill, if possible.
2. Do not use the machine on slopes of more than
11°.
3. Do not mow near drop-offs, ditches, or
embankments. The riding mower could suddenly
turn over if a wheel falls over the edge of a cliff or
ditch, or if an edge caves in.
4. Do not mow on wet grass. Reduced traction could
cause sliding.
5. Do not try to stabilize the machine by putting your
foot on the ground.
6. Do not stop or start suddenly when going uphill or
downhill.
7. Never “freewheel”. Do not let the machine travel
downhill with HST pedal at neutral position.
8. Do not modify or alter the riding mower.
쏆Children
Tragic accidents can occur if the operator is not alert
to the presence of children. Children are attracted to
the machine and the mowing activity. Never assume
that children will remain where you last saw them.
1. Keep children out of the mowing area and under
the watchful care of another responsible adult.
2. Be alert and turn the machine off if children enter
the area.
3. Before and when backing, look behind and down
for small children.
4. Never carry children. They may fall off and be
seriously injured or interfere with safe machine
operation.
5. Never allow children to operate the machine,
even under adult supervision. Local regulation
can restrict the age of the operator.
6. Use extra care when approaching blind corners,
shrubs, trees, or other obstructions that might
hide children from sight.
쏆Operators, age 60 years and above
Data indicates that operators, age 60 years and
above, are involved in a large percentage of machine-
related injuries. These operators should evaluate
their ability to operate the machine safely enough to
protect themselves and others from serious injury.
쏆Stopping
1. Make sure that the machine has come to a
complete stop before dismounting.
2. Before dismounting, disengage the PTO, lower all
implements, place all control levers in their
neutral positions, apply parking brake, turn off the
engine and remove the key.
3. Do not park the machine on a steep incline. Park
on relatively flat areas.
3. USING THE PTO
1. Before installing or using PTO-driven equipment,
read the manufacturer's manual and review the
safety labels attached to the equipment.
2. Wait until all moving components have
completely stopped before connecting,
disconnecting, adjusting, cleaning, or servicing
any PTO-driven equipment.
3. Use the PTO with KUBOTA approved
attachments.
4. USING THE LIFT LINK
1. Use lift link only with authorized attachments
designed for lift link usage.
5. TRANSPORTING
1. Disengage power to attachment(s) when
transporting or not in use.
2. Do not tow this machine. Use a suitable truck or
trailer when transporting on public roads.
3. This machine is not allowed to be used on public
roads.
4. Use extra care when loading or unloading the
machine into a trailer or truck.

Safe Operation
4
ENGLISH
6. SERVICING
1. Before servicing the machine, park the machine
on a firm, level surface, set the parking brake, stop
the engine and remove the key.
2. Securely support machine or any machine
elements with stands or suitable blocking before
working underneath. For your safety do not rely
or hydraulically supported devices, they may leak
down, suddenly drop or be accidently lowered.
3. To avoid injury, do not adjust, unclog or service
the mower or grass catcher with the engine
running. Make sure rotating blades are stopped
before dismounting the riding mower.
4. Disengage power to attachment(s), stop the
engine and remove the key before making any
repairs or adjustments.
5. Allow the machine to cool off before servicing the
engine, muffler, etc.
6. Keep your riding mower clean. Dirt and grass
build-up can cause fires and may lead to serious
personal injury.
Periodically wash the grass container to insure
the safety signs can be read.
Replace all safety signs that are damaged, lost or
have otherwise become illegible. If a part to be
replaced has a sign on it, obtain a new safety sign
from your KUBOTA Dealer and install it in the
same place as on the removed part.
7. Use extra care in handling diesel fuels. They are
flammable.
(1) Use only an approved container.
(2) Do not remove fuel cap or refuel with the
engine running. Allow engine to cool before
refueling. Do not smoke while refueling or
when standing near fuel.
(3) Do not refuel the machine indoors and always
clean up spilled fuel or oil.
(4) Do not store the machine or fuel container
inside where there is an open flame, such as
in a water heater.
(5) If the fuel tank has to be drained, this should
be done outdoors.
(6) Replace all fuel tanks and container caps
securely.
8. Do not change the engine governor setting or
overspeed the engine. Operating the engine at
excessive speed can increase the hazard of
personal injury.
9. Never run a machine inside a closed area.
10. Mower blades are sharp and can cut your hands.
Wrap the blade(s) or wear gloves, and use extra
caution when servicing them.
11. Keep nuts and bolts, especially blade attachment
bolts, tight and keep equipment in good
condition. On multi-bladed mowers, take care as
rotating one blade can cause other blades to
rotate.
12. Do not smoke when working around the battery.
Keep all sparks and flames away from battery.
The battery presents an explosion hazard because
it gives off hydrogen and oxygen...especially
when recharging.
13. Before “JUMP STARTING”a dead battery, read
and follow all of the instructions to help protect
the alternator from damage due to extreme load
changes. (See “JUMP STARTING”in
"OPERATING THE ENGINE" section.)
Batteries contain sulfuric acid and produce
explosive gases. Follow the instructions below to
prevent personal injury.
¡Wear eye and skin protection.
¡Keep sparks and flame away.
¡Always have adequate ventilation while
charging or using the battery.
14. Keep first aid kit and fire extinguisher available at
all times.
15. Disconnect the battery’s negative 1cable before
working on or near electric components.
16. To avoid sparks from an accidental short circuit,
always disconnect the battery’s negative 1cable
first and connect it last.
(1) Battery
(2) Positive cable
2
(3) Negative cable 1
17. Do not attempt to mount a tire on a rim. This
should be done by a qualified person with the
proper equipment.
18. Make sure cir clips, nuts and spring lock washers
are properly secured on the front and rear wheels,
respectively.
19. Never tamper with safety devices.
Check their proper operation regularly.
20. Check brake operation frequently. Adjust and
service as required.
21. Properly dispose of used lubricants, filters,
batteries, and other such components.
22. Always maintain the correct tire inflation
pressure. Do not inflate tires above the
recommended pressure shown in the Operator’s
Manual.

Safe Operation 5
ENGLISH
23. Securely support the machine when changing
wheels.
24. Make sure that wheel bolts have been tightened
to the specified torque.
25. Do not put yourself below the raised grass
container.
26. Escaping hydraulic fluid under pressure has
sufficient force to penetrate the skin causing
serious personal injury. Before disconnecting
lines, be sure to relieve all pressure. Before
applying pressure to the system, make sure all
connections are tight and that lines, pipes, and
hoses are not damaged.
27. Fluid escaping from pinholes may be invisible.
Use a piece of cardboard or wood to search for
suspected leaks: do not use hands. Use safety
goggles or other eye protection.
If injured by escaping fluid, see a medical doctor
at once. Serious infection or reaction will result if
proper medical treatment is not administered
immediately. This fluid can produce gangrene or
severe allergic reaction.
(1) Cardboard
(2) Hydraulic line
(3) Magnifying glass
28. Waste products such as used oil, fuel, hydraulic
fluid, and batteries, can harm the environment,
people, pets and wildlife. Please dispose of
properly.
29. Do not use beverage containers for waste fluids or
other products. Someone, particularly children,
may drink them by mistake.
30. See your local Recycling Center or KUBOTA
Dealer to learn how to recycle or get rid of waste
products.
1A Material Safety Data Sheet (MSDS) provides
specific details on chemical products; physical
and health hazards, safety procedures, and
emergency response techniques. The seller of
the chemical products used with your machine
is responsible for providing the MSDS for that
product upon request.
7. STORAGE
1. Keep the machine and supply of fuel in locked
storage and remove the key to prevent children or
others from playing or tampering with them.
2. When machine is to be stored for a long time,
disconnect battery cables or remove the battery.
Always remove the negative 1cable first and
reinstall the negative 1cable last.
3. Do not store the machine with fuel in the tank
inside a building where fumes may ignite. Allow
the engine to cool before storing.
4. To avoid the danger of exhaust fume poisoning,
do not operate the engine in a closed building
without adequate ventilation.
5. To reduce fire hazards, clean the machine
thoroughly before storage. Dry grass and leaves
around the engine and mufflers may ignite.
6. Moisture content in most grasses can damage the
mower and grass catcher if these components are
not properly cleaned after use. Also, dry grass
and leaves left in the container can be a fire
hazard. Always make sure the container and the
duct are clean and completely empty before
storage.

Safe Operation
6
ENGLISH
DANGER, WARNING AND CAUTION LABELS
q Part No. K1213-6581-1
w Part No. K1211-6585-1
Diesel fuel No fire
only
e Part No. K5254-7311-1
TO AVOID INJURY OR DEATH:
¡Read and understand Operator’s Manual.
¡Shut off engine and remove key before servicing.
¡DO NOT operate where machine could slip or tip.
¡DO NOT operate on slopes of more than 11°.
¡Mow up and down slowly, not accross.
¡DO NOT allow any bystanders or children around or
near machine at all times when the engine is running.
ROTATING BLADES HAZARDOUS:
¡DO NOT put hands or feet into mower when
engine is running.
¡Keep all shields and guards in place.
¡Stay clear of rotating parts.
¡Stop the engine and remove key before servicing.

Safe Operation 7
ENGLISH
r Part No. K2110-6573-1
HOT SURFACE,
DO NOT TOUCH
y Part No. K1213-6586-1
Do not get your hands
close to engine fan and
fan belt.
t Part No. K1213-6583-1
TO AVOID A MACHINE RUNAWAY:
¡DO NOT start engine by shorting across
starter terminals or bypassing the safety
start switch.
u Part No. K2113-6574-1

Safe Operation
8
ENGLISH
i Part No. K2561-6542-1
Do not touch hot surface like muffler, etc.
CARE OF DANGER, WARNING AND CAUTION LABELS
1. Keep danger, warning and caution labels clean and free from obstructing material.
2. Clean danger, warning and caution labels with soap and water, dry with a soft cloth.
3. Replace damaged or missing danger, warning and caution labels with new labels from your KUBOTA Dealer.
4. If a component with danger, warning or caution label(s) affixed is replaced with new part, make sure the
label(s) is(are) attached in the same location(s) as the replaced component.
5. Mount new danger, warning and caution labels by applying on a clean dry surface and pressing any bubbles to
outside edge.
o Part No. K1211-6115-1
!0 Part No. K1211-6116-1
DANGER / POISON
SHIELD EYES
EXPLOSIVE GASES can cause blindness
or injury.
NO SPARKS / FLAMES / SMOKING
SULFURIC ACID can cause blindness or
severe burns.
KEEP OUT OF THE REACH OF CHILDREN.
DO NOT TIP.
DO NOT OPEN BATTERY!
Flush eyes immediately with water.
Get medical help fast.

9
ENGLISH
SERVICING OF RIDING MOWER
After reading this manual thoroughly, you will find
that you can do some of the regular maintenance
yourself. Your dealer is interested in helping you get
the best performance from your new riding mower
and wants to help you get the most value from it.
When in need of parts or major service, be sure to see
your KUBOTA Dealer. When in need of parts, be
prepared to give your dealer the machine, engine and
mower serial numbers.
Locate the serial numbers now and record them in the
space provided.
KUBOTA G18, G21 RIDING MOWER
Machine Serial No. _____________________________
Engine Serial No. _______________________________
Mower Serial No. _______________________________
Date of Purchase _______________________________
Name of Dealer ________________________________
(To be filled in by purchaser)
(1) Machine serial No.
(2) Engine serial No.
(3) Mower serial No.

10
ENGLISH
SPECIFICATIONS
Model
Model
Type
Total displacement
Gross power
No. of cylinders
Starter
Battery
Fuel
Preheating system
Engine stop
Fuel tank
Engine oil
Radiator coolant
Hydrostatic transmission oil
PTO
PTO clutch
PTO brake
Tires
Steering type
Brake
Travel speed contol
Transmission
Traveling speeds
Overall length (with Grass Catcher)
Overall width
Overall height
Wheel base
Tread
Weight (without Mower and Grass Catcher)
Model
Cutting width
Cutting height
Adjustment of cutting height
Mounting method
Weight (Approx.)
Dimensions
Discharge direction
Gear box oil
Model
Container Capacity
Weight (Approx.)
Dumping height
D722-E3-G18
Liquid-cooled diesel
719
13.4
3
Electric starter with battery
51R(12V, 450CCA)
Diesel fuel No.1 (below 앥10°C)
Diesel fuel No.2 (above 앥10°C)
Super glow
Key stop
22
2.6
2.1
Shaft Drive
Belt Tension
Available
16҂6.50–8
23҂10.50–12
Electric power steering
Internal expanding brake
Foot pedal
Hydrostatic
0 to 15.0
0 to 6.0
1280
1280
825
780
RCK48G18-PRO
1219
25 to 102
Dial gauge
Quick joint, Parallel linkage
95
900
1280
315
Rear
0.4
500
Engine
Capacity
Machine
Dimensions
Mower
Grass
catcher
Note: The company reserves the right to change the specifications without notice.
G18 G18HD
2930 2990
4.5 6.0
1160 1450
440 510
GCK500
30
––
GCK500HD
60
1750
cm
3
kW
L
L
L
L
Front
Rear
Forward km/h
Reverse km/h
mm
mm
mm
mm
Front mm
Rear mm
kg
mm
mm
kg
Total length mm
Total width mm
Total height mm
L
L
kg
mm

11
ENGLISH
Model
Model
Type
Total displacement
Gross power
No. of cylinders
Starter
Battery
Fuel
Preheating system
Engine stop
Fuel tank
Engine oil
Radiator coolant
Hydrostatic transmission oil
PTO
PTO clutch
PTO brake
Tires
Steering type
Brake
Travel speed contol
Transmission
Traveling speeds
Overall length (with Grass Catcher)
Overall width
Overall height
Wheel base
Tread
Weight (without Mower and Grass Catcher)
Model
Cutting width
Cutting height
Adjustment of cutting height
Mounting method
Weight (Approx.)
Dimensions
Discharge direction
Gear box oil
Model
Container Capacity
Weight (Approx.)
Dumping height
D782-E3-G21
Liquid-cooled diesel
778
15.6
3
Electric starter with battery
51R(12V, 450CCA)
Diesel fuel No.1 (below 앥10°C)
Diesel fuel No.2 (above 앥10°C)
Super glow
Key stop
22
2.8
2.1
Shaft Drive
Belt Tension
Available
16҂6.50–8
23҂10.50–12
Electric power steering
Internal expanding brake
Foot pedal
Hydrostatic
0 to 15.0
0 to 6.0
1280
1280
825
780
RCK48G18-PRO
1219
25 to 102
Dial gauge
Quick joint, Parallel linkage
95
900
1280
315
Rear
0.4
500
Engine
Capacity
Machine
Dimensions
Mower
Grass
catcher
Note: The company reserves the right to change the specifications without notice.
G21 G21HD
2930 2990
4.5 6.0
1280 1450
440 510
GCK500
30
––
GCK500HD
60
1750
cm
3
kW
L
L
L
L
Front
Rear
Forward km/h
Reverse km/h
mm
mm
mm
mm
Front mm
Rear mm
kg
mm
mm
kg
Total length mm
Total width mm
Total height mm
L
L
kg
mm

12
ENGLISH

FRANÇAIS
3Symbole d’alerte à la sécurité
RCarburant diesel
TNiveau du carburant
Frein
Frein de stationnement
cArrêt du moteur
Préchauffage
vMoteur en marche
Commande de démarrage
iEmbrayage de la prise de force-Position
”DESENGAGEE”
uEmbrayage de la prise de force-Position
“ENGAGEE”
Hauteur De Coupe
ABREVIATIONS
Abréviations
API
PDF
PT
tr/min
SAE
Définitions
Institut américain du pétrole
Prise de force
Type permanent (=antigel au glycol éthylène)
Tours par minute
Sociétédes ingénieurs automobiles
SYMBOLES UNIVERSELS
Employés comme guide lors de l’utilisation de votre tondeuse, des symboles universels variés ont étéapposés sur
les contrôles et les instruments. Ces symboles et leur significations sont montrés ci-dessous.
Tondeuse position “ABAISSEE”
Tondeuse position “RELEVEE”
99
99
9Eclairage
Phares allumés
fPhares éteints
jRapide
kLente
Commande de régime du moteur
gBatterie
lPression d’huile
zTempérature du liquide de refroidissement
Bac de ramassage ferme
Bac de ramassage ouvert