Kubota GF1800-R-2 ES, GF1800E-R-2 Operators Manual

1BDAIBAAP0010

MODELS GF1800-R-2
MODELES GF1800E-R-2

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PRINTED IN JAPAN
IMPRIME AU JAPON

©

KUBOTA Corporation 2014

English, French (Canada)

Code No.

N° de code.

K3312-6293-2

GF1800-R-2/GF1800E-R-2 (Canada)
AU . C . 3 - 3 . 0 . AK

California Proposition 65

WARNING

Engine exhaust, some of its constituents,
certain vehicle components and fluids,
contain or emit chemicals known to the
State of California to cause cancer and birth
defects or other reproductive harm.

3

SAFETY FIRST

IMPORTANT :

NOTE :

3

DANGER :

3

WARNING :

3

CAUTION :

Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not
avoided, could result in minor or moderate injury.

Indicates that equipment or property damage could result if
instructions are not followed.

Gives helpful information.

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.

FOREWORD

You are now the proud owner of a KUBOTA FRONT MOWER. This machine is a
product of KUBOTA's quality engineering and manufacturing. It is made of excellent
materials and under a rigid quality control system. It will give you long, satisfactory
service. To obtain the best use of your machine, please read this manual carefully. It
will help you become familiar with the operation of the machine and contains many
helpful hints about machine 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
become outdated. KUBOTA distributors and dealers will have the most up-to-date
information. Please do not hesitate to consult them.

SAFE OPERATION ........................................................1

1. SERVICING.....................................................................9

2. SPECIFICATIONS ........................................................10

3. INSTRUMENT PANEL AND CONTROLS ....................11

3.1 INSTRUMENT PANEL ..........................................11

3.2 CONTROLS ..........................................................12

4. OPERATING INSTRUCTIONS .....................................17

4.1 PRE-START CHECKS ..........................................17

4.2 OPERATING THE ENGINE ..................................17

4.3 OPERATING THE MACHINE ................................18

4.4 CHECK DURING OPERATING .............................19

5. MAINTENANCE ............................................................20

5.1 DAILY CHECK .......................................................20

5.2 LUBRICANTS, FUEL AND COOLANT ..................21

5.3 MAINTENANCE CHECK LIST ..............................22

6. CHECK AND MAINTENANCE .....................................24

6.1 FUEL .....................................................................24

6.2 ENGINE OIL ..........................................................25

6.3 TRANSMISSION FLUID ........................................26

6.4 PTO GEAR CASE FLUID ......................................28

6.5 REAR AXLE DIFFERENTIAL CASE FLUID

(4WD) ....................................................................28

6.6 REAR AXLE GEAR CASE FLUID (4WD) ..............28

6.7 OILING AND GREASING POINTS .......................29

6.8 INTAKE AIR LINE ..................................................30

6.9 RADIATOR ............................................................31

6.10 AIR CLEANER ......................................................33

6.11 BATTERY ..............................................................34

6.12 TIRE PRESSURE .................................................35

6.13 FUSE .....................................................................35

6.14 CHECKING ENGINE START SYSTEM ................36

6.15 CHECKING OPC SYSTEM ...................................36

6.16 REPLACING LIGHT BULB ....................................37

7. ADJUSTMENTS ...........................................................38

7.1 FAN DRIVE BELT TENSION .................................38

7.2 BRAKE ..................................................................38

7.3 REAR AXLE (2WD) ...............................................39

8. TROUBLESHOOTING ..................................................40

8.1 BATTERY TROUBLESHOOTING .........................40

8.2 MACHINE TROUBLESHOOTING .........................40

8.3 ENGINE TROUBLESHOOTING ...........................41

9. LONG-TERM STORAGE ..............................................42

10. WIRING DIAGRAM .....................................................43

SAFE OPERATION

1

Careful operation is your best insurance against an
accident. Read this section carefully before operating
the machine. All operators, whether experienced or
not, should read this and other related manuals before
operating the mower or any attachment on 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 this

entire manual before attempting to start and operate

the machine.
(2) Know the controls and how to stop quickly.
(3) Pay special attention to the warning, caution and

danger labels on the machine itself.
(4) KUBOTA recommends the use of a ROPS (Roll Over

Protective Structure) and seat belt in almost all

applications. This combination will reduce the risk

of serious injury or death should the machine tip

over.

 Thismachineisintendedtouseonatterrain.

(1) Seat belt (2) ROPS

(5) Always use the seat belt if the machine has a ROPS.

Never fasten the seat belt without a ROPS. Check the

seat belt daily and replace if frayed or damaged.
(6) Never modify or repair a ROPS. Welding, bending,

drilling or cutting any portion of the ROPS will

weaken the ROPS structure. If any structural

member is damaged, replace the entire structure at

your local KUBOTA dealer.

(7) Do not operate the machine or any attachments

while under the inuence of alcohol, medication,

controlled substances or when fatigued.

(8) Check brakes, clutch, and other mechanical parts

for correct adjustment and wear. Replace worn or
damaged parts promptly. Check the tightness of all
nuts and bolts regularly. (For further details, see
MAINTENANCE AND ADJUSTMENTS section.)

(9) Keep all shields and guards in place. Replace any

that are damaged or missing.

(10) Carefully check the vicinity before operating the

machine or any attachments to it. Clear the work
area of objects (wires, rocks, etc.) that might be
picked up and thrown. Do not allow any bystanders
around or near machine during operation.

(11) Before allowing other people to use your machine,

explain how to operate and have them read this
manual before operation.

(12) Never wear loose, torn, or bulky clothing around

machine. The clothing may catch on moving parts
or controls. Wear and use any additional safety
items such as hard hat, safety boots or shoes, eye
and hearing protection, gloves, etc. As appropriate
or required.

(13) Neverallowpassengers ornon-qualiedoperators

on the machine at any time. You must operate the
machine from the seat only.

(14) Keep your machine clean. Accumulations of dirt,

grease,andtrashcancontributetoresandleadto

personal injury.

(15) In addition to the design and conguration of

equipment, hazard control and accident prevention
are dependent upon the awareness, concern, and
prudence of personnel involved in the operation,
transport, maintenance, and storage of equipment
or in the use and maintenance of facilities.

(16) 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,speciedinthemanuals

included with equipment.

(17) Follow the maintenance recommendations. See

"Maintenance and Lubrication".

(18) It is recommended that your machine be thoroughly

inspected at least once a year by an authorized
KUBOTA Dealer.

(19) This machine is equipped with many safety devices.

Do not attempt to remove or alter them.

(20) The exhaust gas from the mufer is very hot. To

preventre,donotexposedrygrass,mowedgrass,

oil or any other combustible materials to exhaust
gas. Use a spark arrester where required. Also keep

2

the engine and mufer clean all the time. Replace

themuferifithasafault.

(21) While mowing, always wear substantial foot wear

and long trousers. Do not operate the equipment

when barefoot or wearing open sandals.
(22) Do not wear radio or music headphones while

operating the machine. Safe operation requires your

full attention.
(23) Keep the machine and attachments in good operating

condition and keep safety devices in place and in

proper working condition.
(24) Do not modify the machine. Unauthorized

modicationmayaffectthefunctionofthemachine,

which may result in personal injury.
(25) 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 1 blade can cause

other blades to rotate.

2. OPERATING

Starting

♦

(1) Always sit in the operator's seat when starting

engine or operating levers or controls.
(2) Before starting the engine make sure that all

levers and speed control pedal are in neutral, the

parking brake is engaged, and Power Take Off is

disengaged.
(3) Do not start engine by shorting across starter

terminals. The machine may start in gear and move

if normal starting circuitry is bypassed.
(4) Do not operate or idle engine in a non-ventilated

area. Carbon monoxide gas is colorless, odorless,

and deadly.
(5) Do not "ride" the brake pedal. Use brake for stopping

only.

♦

Operating

(1) Keep all shields and guards in place. Replace any

that are damaged or missing.
(2) Do not drive at high speed or turn the machine when

the differential is locked.
(3) Do not operate near ditches, holes, embankments, or

other terrain which may collapse under the machine

weight. The risk of machine tip over increases when

the ground is loose or wet.
(4) To avoid tip over, operate up and down slopes, not

across. Avoid sudden starts and stops on slopes.

Slow down, and use extra caution when changing

directions on a slope.

 Parkthemachineonarm,levelsurface.

(5) Watch where you are going at all times. Watch for

and avoid obstacles. Be alert at curbs, near trees,

and other obstructions and hidden hazards.

(6) When working in cooperation with other operators,

always let others know what you are doing ahead of

time.
(7) Never try to mount or dismount a moving machine.
(8) Do not operate the machine with bare feet. Keep

hands, feet, and clothing away from power-driven

parts.
(9) Do not drive machine on streets or highways. Watch

for trafc when you cross roads or operate near

roads.
(10) Look to the rear before and when backing. You

must disengage blades before shifting into reverse.

Make sure the area immediately behind you is clear

of obstructions or holes and small children. Use

extra caution when machine is equipped with Grass

Catcher.
(11) Do not cross gravel roads with the PTO engaged.
(12) Do not drive at high speed or turn the front mower

when the differential is locked. (2WD)
(13) Do not depress 4WD release pedal on slopes. (4WD)
(14) Be aware of the mower discharge direction and do

not point it at anyone.
(15) 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.

(16) To reduce re hazards, keep the engine exhaust

area free of grass or leaves.
(17) Be sure rotating blades and engine are stopped and

the key is removed before placing hands or feet

near blades.
(18) Shut the engine off and wait for all movement to stop

before unclogging the chute of the grass catcher. [if

equipped]
(19) Always inspect the mower and the grass catcher [if

equipped] 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.

(20) Operateduringdaylightorinbrightarticiallight.

(21) 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.
(22) Stop the blades rotating before crossing surface

other than grass.
(23) 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.
(24) Do not operate the machine when there is a possibility

of lightning. Even if the machine is equipped with a

cabin, the operator is not protected from lightning.

3

Operation 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.

•

DO

(1) To avoid tip over, operate up and down slowly, not

across. 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) Follow KUBOTA's recommendations for wheel

weights or counterweights to improve stability.
(5) The weight of grass in the grass container may

increase the possibility of tip over. [if equipped]
(6) Keep all movement on slopes slow and gradual. Do

not make sudden changes in speed or direction.
(7) Avoid starting or stopping on a slope. If tires lose

traction, disengage the blades and proceed slowly

straight down the slope.
(8) Reduce speed and exercise extreme caution on

slopes and in sharp turns to prevent tip-over or loss

of control.
(9) Use special caution when changing direction on

slopes.
(10) Shift "High - Low Gear Shift Lever" to the Low

position when mowing or operating 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

14°.
(3) Do not mow near drop-offs, ditches, or embankments.

The machine 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 use the grass catcher on steep slopes. [if

equipped]
(7) Do not stop or start suddenly when going uphill or

downhill.
(8) Never "freewheel". Do not let the machine travel

downhill with speed control pedal at neutral

position.

(9) Do not use the trailer and the towing implement.

♦

Children
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.

♦

Operators, 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.

♦

Stopping
(1) Make sure that the machine has come to a complete

stop before dismounting.

(2) Before dismounting, disengage the PTO, lower all

attachments, place all control levers in their neutral
positions, apply parking brake, turn off the engine,
and remove the key switch.

(3) Make sure that the machine and all attachments

have come to a complete stop before dismounting.

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.

The speed of the PTO is 2600 rpm.

4

4. USING THE LIFT LINK

(1) Use lift link only with authorized attachments

designed for lift link usage.

(2) When using a lift link mounted attachment, be

sure to install the adequate counter ballast weight

speciedintheattachment'smanual.

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) It is recommended that this machine not be used on

public roads.

(4) Use extra care when loading or unloading the

machine into a trailer or truck.

6. SERVICING AND STORAGE

Servicing

♦

(1) Beforeservicing, parkthemachine onarm,level

surface and apply the parking brake. Remove the
key to prevent accidental start-up.

(2) Allow the machine time to cool before touching the

engine,mufer,radiator,etc.

(3) Always stop the engine before refueling. Avoid spills

andoverlling.Wipeupspilledfuelimmediately.

(1) Fuel tank cap

(4) Use extra care in handling diesel fuels. They are

ammable.

(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ame,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.

(5) Do not change the engine governor setting or

overspeed the engine. Operating the engine at
excessive speed can increase the hazard of personal
injury.

(6) Do not smoke when working around battery or when

refueling. Keep all sparks and ames away from

battery and fuel tank. A battery, especially when
charging, will give off hydrogen and oxygen gases
which can explode and cause serious personal
injury.

(7) 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ameaway.

•

Always have adequate ventilation while charging

•

or using the battery.

(8) Keeprstaid kit andreextinguisher handyatall

times.

(9) Do not remove the radiator cap while coolant is

hot.

 When cool, slowly rotate cap to the rst stop and

allowsufcienttimeforexcesspressuretoescape

before removing the cap completely.

(10) Disconnect the battery's ground cable before

working on or near electric components.

(11)Donotuseorchargetherellabletypebatteryifthe

uid level is below the LOWER (lower limit level)

mark.

Otherwise, the battery component parts may

prematurely deteriorate, which may shorten the
battery's service life or cause an explosion. Check

the uid level regularly and add distilled water as
requiredsothattheuidlevelisbetweentheUPPER

and LOWER levels.

(12) Do not attempt to mount a tire on a rim unless

qualiedtodosoandallpropersafetyprecautions

are followed.

5

(13) Alwaysmaintainthe correcttire inationpressure.

Donotinatetiresabovetherecommendedpressure

shown in the Operator's Manual.

(1) Cardboard
(2) Hydraulic line
(3) Magnifying glass

(14) Provide adequate support when changing wheels or

the wheel tread width.

(15) Make sure that wheel nuts have been tightened to

thespeciedtorque.

(16) Escaping hydraulic uid under pressure has

sufcient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.

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 uid,

see a medical doctor at once.

Serious infection or reaction may result if proper

medical treatment is not administered immediately.

 Thisuidcanproducegangrene orsevereallergic

reaction.

(17) Do not make adjustments or repairs with the engine

running.

(18) Keep machine free of grass, leaves, or other debris

build-up.
(19) Do not run a machine inside a closed area.
(20) Waste products such as used oil, fuel, hydraulic

uid, and batteries, can harm the environment,

people, pets and wildlife. Please dispose properly.
See your local Recycling Center or KUBOTA Dealer to

learn how to recycle or get rid of waste products.

♦

Storage

(1) Keep the machine and supply of fuel in locked

storage and remove the ignition key to prevent

children or others from playing or tampering with

them.
(2) To avoid sparks from an accidental short circuit,

always disconnect the battery's ground cable

rstandreconnectitlast.

6

(1) Battery

(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rehazards,cleanthemachinethoroughly

before storage. Dry grass and leaves around the

engineandmufersmayignite.

(8) Start the helper vehicle and let its engine run for a

few moments. Start the disabled machine.
(9) Disconnect the jumper cables in the exact reverse

order of attachment. (Steps 7, 6 and 5).

(1) Dead battery
(2) Jumper cables
(3) Engine block or frame
(4) Helper battery

Connect cables in numerical order.
Disconnect in reverse order after use.

7. JUMP STARTING INSTRUCTIONS AND
PRECAUTIONS

If ice is present or the battery is cracked, DO NOT

•

ATTEMPT TO "JUMP START" vehicle.
Battery gases can explode. Keep cigarettes, sparks,

•

andamesawayfrombattery.

Do not connect other end of negative (-) jumper cable

•

to negative (-) terminal of machine battery.

When jump starting the engine, follow the instructions
below to safely start the engine.
(1) Bring helper vehicle with a battery of the same

voltage as the disabled machine within easy cable

reach.
"THE VEHICLES MUST NOT TOUCH".
(2) Apply the parking brakes of both vehicles and put

the shift levers in neutral. Shut the engine off.
(3) Put on safety goggles and rubber gloves.
(4) Ensure the vent caps are securely in place. (if

equipped)
(5) Attach the red clamp to the positive (red, (+) or pos.)

terminal of the dead battery and clamp the other end

of the same cable to the positive (red, (+) or pos.)

terminal of the helper battery.
(6) Clamp the other cable to the negative (black, (-) or

neg.) terminal of the helper battery.
(7) Clamp the other end to the engine block or frame of

the disabled machine as far from the dead battery

as possible.

7

8. SAFETY LABELS

8

CARE OF SAFETY LABELS

(1) Keep safety labels clean and free from obstructing material.
(2) Clean safety labels with soap and water, dry with a soft cloth.
(3) Replace damaged or missing safety labels with new labels from your KUBOTA dealer.

(4) If a component with safety label(s) afxed is replaced with a new part, make sure new safety label(s) is (are)

attached in the same location(s) as the replaced components.
(5) Mount new safety labels by applying on a clean, dry surface and pressing any bubbles to outside edge.

1. SERVICING

Your dealer is interested in your new machine and has the
desire to help you get the most value from it. After reading

this manual thoroughly, you will nd that you can do some of

the regular maintenance yourself.
However, when in need of parts or major service, however,
be sure to see your KUBOTA dealer.
For service, contact the KUBOTA Dealership from which you
purchased your machine or your local authorized KUBOTA
dealer.
When in need of parts, be prepared to give your dealer both
the machine and engine serial numbers.
The machine serial number is located on the frame on the
left-hand side of the machine. The engine serial number is
located on the engine crankcase, right side. Locate the serial
numbers now and record them in the space provided.

KUBOTA GF1800-R-2, GF1800E-R-2

Machine Serial Number _________________________
Engine Serial Number __________________________
ROPS Serial Number ___________________________
Date of Purchase ______________________________

9

(To be lled in by purchaser)

(1) ROPS serial number

10

2. SPECIFICATIONS

Model GF1800E-R-2 GF1800-R-2

Model D722
Type Liquid-cooled diesel
Total displacement cm³(cu.in.) 719 (43.88)
Gross power kW(HP) 13.4 (18)
Rated revolution rpm 3200
Low idling revolution rpm 1250 to 1350
No.of cylinders 3

Engine

Dimensions

Traveling
system

Seat Suspension type Coil spring
Mower drive system Shaft drive
Mower clutch type Wet multi plates
Mower PTO brake Wet single plate
Mower lift system Hydraulic
Applicable mid-mower cutting width in. 48" 54" 60"
Cutting height adjustment mm(in.) 25 to 102 (1 to 4)
Mower mounting method Quick joint, Quick mount
Step deck Semi-at
Water temperature gauge Standard
Hour meter Standard

(Specications and design subject to change without notice.)

Starter Electric starter with battery
Battery 12V 45AH

Fuel

Fuel tank capacity
Engine oil capacity L(US.qts.) 3.0 (3.2)
Radiator coolant capacity L(US.qts.)
Preheating system Super glow
Engine stop Key stop
Overall length mm(in.) 2120 (83.46) 2017 (79.4)
Overall width mm(in.) 970 (38.2)
Overall height mm(in.) 2030 (79.92)
Wheel base mm(in.) 850 (33.5)

Tread

Min, ground clearance mm(in.) 102 (4)
Weight (Fuel empty) kg(lbs) 478 (1054) 492 (1085)
Type Front 2 wheel drive 4 wheel drive

Tire size

Steering type Manual
Brake lnternal expanding shoe
Travel speed control Foot pedal with speed set lever
Transmission Hydrostatic

Traveling
speeds

Transmission oil capacity L(US.qts.) 5.7 (6.1)
Rear axle diff.case L(US.qts.) -- 1.5 (1.6)
Rear axle gear case L(US.qts.) -- 0.4 (0.4)

Front mm(in.) 724 (28.5)
Rear mm(in.) 775 (30.5) 795 (31.3)

Front 20×10.00-8
Rear 16×6.50-8

Forward km/h(mph) 0 to 13.5 (0 to 8.4)
Reverse km/h(mph) 0 to 6.5 (0 to 4.1)

L(US.gals)

Diesel fuel No.1 [below -10°C (14°F)]
Diesel fuel No.2 [above -10°C (14°F)]

20 (5.3)

3.0 (3.2)

11

3. INSTRUMENT PANEL AND CONTROLS

3.1 INSTRUMENT PANEL

Key switch
Hour meter
Coolant temperature meter

Key Switch

OFF ........The position where the key can be inserted

into or removed from the key switch. [When the
key is turned this position, the engine stops the

moment.]

ON ..........The engine keeps running.

Preheat ... The super glow plug is heated.

Start ........ Depress the brake pedal fully and turn the key

switch to this position to start the engine.

(A) "OFF" (B) "ON" (C) "PREHEAT" (D) "START"

Head light switch
Easy checker

Hour Meter

This meter gives readings for the hours the front mower has
been operated.
As the hour meter works electrically, it starts to work when
the key switch is turned to ON.

Coolant Temperature Meter

(1) With the key switch at "ON", this meter indicates the

temperature of the coolant. "C" for "cold" and "H" for
"hot".

(2) If the indicator reaches the "H" setting (red zone),

coolant is overheated. Check the machine by referring
to "Radiator" (See page 31).

Head Light Switch

Turning the light switch clockwise illuminates the head­lights.

IMPORTANT:

Because of the safety device, the engine may not be ●
started except when the PTO clutch is disengaged and
the brake pedal fully depressed.

................Head lights OFF

................Head lights ON

12

Easy Checker

Alarm when the electrical charge system is not

functioning properly.

Glow plug Indicator (Pre-heating Indicator)

When the key switch is in the "Preheat" position,

the glow plug indicator illuminates. If the engine is
preheated completely, the glow plug indicator turns
off automatically.

Alarm when the engine oil pressure is low.

Alarm when the fuel tank is almost empty.

♦

How to check the Easy Checker

(1) When the key switch is turned "ON", all the lights

except the glow plug indicator and fuel level indicator
illuminates. When the engine starts up, all the lights
should go off.

(2) If trouble should occur at any location while the engine is

running, the warning light corresponding to that problem
comes on.

IMPORTANT:

Daily checks with the Easy Checker only, are not ●
sufcient. Always conduct daily checks carefully by

referring to "Daily Checks". (See page 20)

3.2 CONTROLS

Throttle lever
Speed control pedal
Speed set lever
Brake pedal
Parking brake knob
Seat
PTO lever

Hydraulic lift lever
Differential lock pedal (2WD)
Steering wheel tilt lever
4WD lock pedal
4WD release pedal
Seat belt

13

Throttle Lever

Moving the throttle lever backward decreases the engine
speed and moving it forward increases the engine speed.

(1) Throttle lever (A) "INCREASE"

(B) "DECREASE"

Speed Control Pedal

Depress the speed control pedal with your right foot to move
forward or backward.

NOTE:

When the parking brake is applied, the speed control ●
pedal is locked in the neutral position.

Speed Set Lever

WARNING

To avoid serious injury or death:

Shift the speed set lever completely to the rear ●
before starting the engine.

The speed set lever is designed for machine operating

efciency and operator comfort. This lever will provide a

constant forward operating speed by mechanically holding
the speed control pedal at the selected position.

Speed set lever cannot be set at MAX speed range.

To engage speed set lever

•

1. Accelerate speed to desired level using speed control
pedal, and move lever forward.

2. Release speed control pedal and desired speed will be
maintained.

To disengage speed set lever, move lever to "RELEASE"

•

position or can be disengaged by depressing the brake
pedal when urgent stop.

NOTE:

If the lever is not in just "RELEASE" position, it is hard to ●
depress the speed control pedal to "REVERSE".
Speed set lever is concerned with the brake pedal stroke ●
adjustment. (See page 38)

(1) Speed control pedal (A) "FORWARD"

(B) "REVERSE"

(1) Speed set lever (A) "RELEASE" (Low)

(B) "SET" (High)

Brake Pedal

WARNING

To avoid serious injury or death:

Do not depress the brake pedal quickly on ●
slopes. Quick brake will cause upset of the
machine.

(1) Depress the brake pedal to stop the machine.

14

Parking Brake Knob

(1) To apply the parking brake:

Depress the brake pedal and hold in position.

•

Latch the brake pedal with the parking brake knob.

•

(2) To release the parking brake: Depress the brake pedal

again.

(1) Brake pedal
(2) Parking brake knob

Seat

The operator's seat position can be adjusted forward and
backward in 60 mm (2.4 in.) range by pulling the seat sliding
lever.

(1) PTO lever (A) "ENGAGE"

(B) "DISENGAGE"

(1) If you get off the seat while the PTO is running, the

engine will stop automatically. (Seat safety control)

(2) Before starting the engine, pull the PTO lever to the

disengage position. If it is at the engaged position, the
engine will not crank.

NOTE: These are built-in safety features.

Hydraulic Lift Lever

The hydraulic lift lever is used to raise and lower implement
used with the machine (ex. Mower).
To lower implement, push the lever forward.
To raise it, pull the lever back.

IMPORTANT:

Do not operate until the engine is warmed up. If operation ●
is attempted while the engine is still cold, the hydraulic
mechanism will not properly function and its service life
will be shortened.

(1) Seat sliding lever
(2) Seat attaching bolt

PTO Lever

To drive the PTO, move the PTO lever to the forward
position.

(1) Hydraulic lift lever (A) "UP"

(B) "DOWN"
(C) "NEUTRAL"

NOTE:

When equipped with the grass catcher, the mower ●
becomes somewhat heavy. While the engine is idling
with the grass catcher on, there may be a delay in lifting.
In such a case, increase the engine rpm slightly to make
the lifting smooth.

15

Differential Lock Pedal (2WD)

WARNING

To avoid serious injury or death:

Do not drive at high speed or turn the machine ●
when the differential is locked. Release the lock
before making such a turn.

If one of the front wheels should slip, step on the differential
lock pedal.
Both wheels will then turn together, reducing slippage.
The differential lock is applied only when the pedal is
depressed.

IMPORTANT:

If the differential lock will not release when the pedal is ●
released, alternately step speed control pedal back and
forward slightly.
Do not apply the differential lock when traveling at high ●
speed, or damage to the transmission may result.

4WD Lock Pedal (A)
4WD Release Pedal (B)

WARNING

To avoid serious injury or death:

Do not depress pedal B on slopes. ●
Use the 4WD pedals when a greater traction is
required.

Depress pedals A and B on demand for a greater

•

traction.
Depress pedal A when in need of full time 4WD.

•

To release 4WD, depress pedal B.

•

IMPORTANT:

Do not steer the rear wheel sharply when engaging 4WD, ●
or damage to the turf may result.

(1) Differential lock pedal (A) "ENGAGE"

(B) "DISENGAGE"

Steering Wheel Tilt Lever

By pulling upward the steering wheel tilt lever, the lock is
released and the steering wheel can be adjusted to four tilt
angle settings.

(1) Steering wheel tilt lever

Engine Stop Lever

■

The engine stops when the key switch is turned off.
If the engine does not stop, open the hood and pull engine
stop lever (Red mark) and hold it until the engine stops.
Then contact your KUBOTA dealer immediately.

(1) Engine stop lever

16

Seat Belt

WARNING

To avoid serious injury or death:

Always use the seat belt when the ROPS is ●
installed.
Do not use the seat belt if a foldable ROPS is ●
down or there is no ROPS.

Adjust the seat belt for proper t and connect to the buckle.

The seat belt is an auto-locking retractable type.

(1) Seat belt (2) ROPS

4. OPERATING INSTRUCTIONS

17

4.1 PRE-START CHECKS

Before starting the engine, make pre-start checks according
to the Maintenance Schedule on page 20.

4.2 OPERATING THE ENGINE

WARNING

To avoid serious injury or death:

Read "SAFE OPERATION" in the front of this ●
manual.
Read the Safety labels located on the machine. ●
To avoid danger of exhaust fume poisoning, ●
do not operate the engine in a closed building
without proper ventilation.
Always set the speed control pedal and PTO ●
lever to the "neutral" position before starting the
engine.

Starting

■

(1) Sit on the operator's seat.
(2) Fasten the seat belt.
(3) Place the PTO lever in the "disengage" position.
(4) Place the speed control pedal in the "neutral" position.
(5) Place hydraulic control lever in "neutral" position.
(6) Set the throttle lever 1/2 of the way forward.
(7) Insert the key into the key switch and turn clockwise one

notch.
(8) Make sure that the easy checker lights are on.
(9) Turn the key switch clockwise, and hold it for about 5

seconds. (at the preheat position)
The glow plug indicator turns off for about 5 seconds.
For the appropriate preheating time, refer to the table

below:

Temperature Preheating Time

Over 0°C (32°F) 5 sec.

Below 0°C (32°F) 10 sec.

IMPORTANT:

Do not turn the key switch while the engine is running. ●
When the temperature is below 0°C (32°F), run the ●
engine at medium speed to warm up the lubricant of the
engine and transmission for at least 10 minutes. If the
machine is operated before the lubricant is warm enough,
the machine life will be shortened.
Do not operate the machine under full load until it is ●

sufciently warmed.
Do not use starting uid. ●

IMPORTANT:

When the ambient temperature is less than -15°C ●
(5°F), remove the battery from the machine and store it
somewhere warm until next operation.

Stopping

■

(1) Slow the engine down by moving the throttle lever

backward.

(2) Turn the key switch off and remove the key from the

switch.

How to Open the Hood

■

WARNING

To avoid serious injury or death from contact with
moving parts:

Never open the hood while the engine is running. ●
Donottouchmuferorexhaustpipeswhilethey ●
are hot; severe burns could result.

To open the hood, lift the lever of the front end of the hood.

(10) Depress the brake pedal fully.
(11) Turn the key switch to the start position and the starter

will turn and the engine should start.
(12) Make sure that the easy checker lights have gone off.

If the light is still on, immediately stop the engine and

check the remedy following the instruction of page 19.
(13) Warm the engine by running at medium speed.

(1) Hook
(2) Hood

18

4.3 OPERATING THE MACHINE

WARNING

To avoid serious injury or death:

Do not allow any person other than the driver to ●
ride on the machine.
Do not drive the machine close to the edges ●
of ditches or banks which may collapse under
the weight of the machine, especially when the
ground is loose or wet.
When turning the machine, be sure to reduce the ●
travel speed by letting up on the pedal.
Do not drive at high speed or turn the machine ●
when the differential is locked.
To avoid tip over, operate up and down ●
slopes, not across. Avoid sudden starts and
stops on slopes. Slow down, and use extra
caution when changing directions on a slope.

Parkthemachineonarm,levelsurface.

Watch where you are going at all times. Watch ●
for and avoid obstacles. Be alert at curbs,
near trees, and other obstructions and hidden
hazards.
Do not drive machine on streets or highways. ●

Watch for trafc when you cross roads or

operate near roads.
Look to the rear before and when backing. You ●
must disengage blades before shifting into
reverse. Make sure the area immediately behind
you is clear of obstructions or holes and small
children. Use extra caution when machine is
equipped with Grass Catcher.
Do not drive at high speed or turn the front ●
mower when the differential is locked. (2WD)
Do not depress 4WD release pedal on slopes. ●
(4WD)

Starting

■

(1) Unlock the parking brake.
(2) Speed up the engine by moving the throttle lever

forward.
(3) Depress the speed control pedal with your right foot to

move forward or backward.

IMPORTANT:

Never move the machine with the brake on. ●

Parking

■

TO APPLY THE PARKING BRAKE:

Depress the brake pedal and hold in position.

•

Latch the brake pedal with the parking brake knob.

•

TO RELEASE THE PARKING BRAKE:

Depress the brake pedal again.

WARNING

To avoid serious injury or death:
Before leaving the operator's position,

Set parking brake. ●
Lower all implements to the ground. ●
Shut off engine. ●
Remove the key from the switch. ●

If necessary to park on an incline, be sure to chock the wheels
to prevent accidental rolling of the machine.

(1) Chocks

Transporting

■

(1) Do not tow this machine a long distance, or damage to

the transmission may result.

(2) Transport the machine on a trailer.

Fasten the machine to the trailer.

•

Prevent the hood from opening by wind by any

•

chance. If necessary, load the machine backward or
use stable strap.

Stopping

■

(1) Release the speed control pedal and depress the brake

pedal to stop the machine.
(2) Slow the engine down.
(3) Shift PTO lever to "disengage" position.
(4) Lower all attachments, place all control levers in their

neutral positions.
(5) Apply parking brake, turn off the engine and remove the

key switch.

19

4.4 CHECK DURING OPERATING

When operating, check the following to ensure that all the
parts are functioning correctly.

Coolant

■

WARNING

To avoid serious injury or death:

Do not remove radiator ller cap until coolant ●
temperature is well below its boiling point.
Then rotate cap slightly to the stop to relieve
any excess pressure before removing cap
completely.

If engine coolant temperature meter indicator moves into the
red zone on the gauge, stop the engine and check for the
following:
(1) Shortage or leakage of the coolant.
(2) Foreign matter on the radiator net and dust and dirt

between the radiator ns and tube.

(3) Loose fan drive belt.
(4) Internal blockage in the radiator core or hose.

Exhaust Fumes

■

(1) Exhaust Fumes are colorless at normal output drive.
(2) If the color of exhaust gas becomes dark often during

driving, the engine maybe overloaded. This will result in
excessive wear to the engine, drivertrain, and tires.

Operate in a lower speed or decrease load placed on

machine.

Urgent Stop

■

Should the following take place, immediately stop the
engine.
(1) The engine suddenly slows down or speeds up.
(2) Unusual noises are suddenly heard.
(3) Exhaust suddenly become very dark.
(4) The engine oil pressure light illuminates while

operating.
(5) The battery charge light goes on while operating.
For checks and remedies in the above situations, consult
your KUBOTA dealer.

Easy Checker

■

Engine oil pressure light

•

The pressure light signals the operator that the engine oil
pressure is below the prescribed level. If the light goes on
during operation, immediately stop the engine and check the
following:
(1) The level of the engine oil. (See page 25)
(2) The conditions of the lubrication system.

Battery charge light

•

The charge light signals to the operator that the dynamo is
not charging the battery.
If the light goes on during operation, immediately stop the
engine and check for:
(1) Wiring failure.
(2) Connection failure of dynamo and regulator.
(3) Dynamo drive belt failure.

Fuel

■

Do not allow the fuel tank to empty completely.
Doing so will allow air to enter into the fuel system. Should
this happen, the fuel system must be bled. (See page 24)

20

5. MAINTENANCE

5.1 DAILY CHECK

To prevent trouble from occurring, it is important to know the
conditions of the machine well. Check before starting.

WARNING

To avoid serious injury or death:

Be sure to check and service the machine on ●
a level surface with the engine shut off and the
parking brake on.

Reference

page

35

31

—

—

12

Walking around
the machine

While sitting in
the operator's
seat

Turning the key
switch on

No. Check item

1 The tire pressure, wear

and damage
2 Oil and water leak —
3 Engine oil level 25
4 Transmission uid level 26
5 Battery electrolyte level 34
6 Coolant level in the

recovery tank
7 Damage of machine

body, tightness of all

bolts and nuts
8 Radiator screen 33
9 Panel screen 33

10 Brake play 38
11 Oiling 29

1 Speed control pedal

Brake pedal
2 Speed set lever 13
3 Parking brake —
4 Steering wheel —
5 Seat belt and ROPS 16
1 Performance of the easy

checker light
2 Headlights —
3 Fuel level 24

No. Check item

Starting the
engine

Others 1 Check the areas where

1. Always check condition of the seat belt and ROPS
attaching hardware before operating the machine.

2. Replace anything that is frayed or damaged.

(1) Seat belt (2) ROPS

1 Color of the exhaust

fumes

2 Safety start switch and

seat safety control. If
either of these do not
operate properly, contact
your KUBOTA dealer
immediately.

3 Check for abnormal noise

and vibration.

previous trouble was
experienced.

Reference

page

19

36

—

—

21

5.2 LUBRICANTS, FUEL AND COOLANT

To prevent serious damage to lubricating systems, use genuine KUBOTA uid or equivalent.

Place Capacity Lubricants

Fuel 20 L (5.3 U.S.gals)

Coolant 3.0 L (3.2 U.S.qts.) Fresh clean water with anti-freeze

Engine crankcase 3.0 L (3.2 U.S.qts.)*1

Transmission 5.7 L (6.1 U.S.qts.)
PTO Gear Case 0.6 L (0.63 U.S.qts.)
Rear axle differential case (4WD) 1.5 L (1.6 U.S.qts.)
Rear axle gear case (R&L) (4WD) 0.4 L (0.4 U.S.qts.)
Center pin (2WD)

King pins (2WD)
Joint shaft
Link pivot
Seat adjuster
Speed control pedal shaft
PTO drive shaft
Rear wheel drive shaft (4WD)
Knuckle arm (4WD)

Cable (Throttle)
Cable (4WD pedal)

Moderate Amount Multipurpose EP2 grease (NLGI Grade No.2)

Moderate Amount Oil

Note *1 Oil amount when the oil level is at the center of the oil level gauge

*2 The product name of KUBOTA genuine UDT uid may be different from that in the Operator's Manual depending on

countries or territories. Consult your local KUBOTA Dealer for further detail.

No.2-D diesel fuel
No.1-D diesel fuel if temperature is below -10°C

Engine oil: Refer to the NOTE below.
Above 25°C

.....SAE30, SAE10W-30 or 15W-40

0 to 25°C

.....SAE20, SAE10W-30 or 15W-40

Below 0°C

.....SAE10W, SAE10W-30 or 15W-40

KUBOTA SUPER UDT-2 uid*2

KUBOTA SUPER UDT-2 uid*2 or SAE85W, SAE90 gear oil
(API service classication: more than GL-3)

IMPORTANT

lTo prevent serious damage to hydraulic systems, use only KUBOTA genuine uid or its equivalent.

NOTE

uEngine Oil:

l Oil used in the engine should have an American Petroleum Institute (API) service classication and Proper SAE Engine Oil

according to the ambient temperatures as shown above:

l With the emission control now in effect, the CF-4 and CG-4 lubricating oils have been developed for use of a low-sulfur fuel on

on-road vehicle engines. When an off-road vehicle engine runs on a high-sulfur fuel, it is advisable to employ the "CF or better"
lubricating oil with a high Total Base Number (TBN of 10 minimum).

l Refer to the following table for the suitable API classication engine oil according to the engine type (with internal EGR, external

EGR or non-EGR) and the fuel (low-sulfur or high-sulfur fuel).

Fuel used

High Sulfur Fuel

0.05% (500 ppm)]

[

Low Sulfur Fuel
[<0.05% (500 ppm)] or
Ultra Low Sulfur Fuel
[<0.0015% (15 ppm)]

Oil class of engines except external EGR Oil class of engines with external EGR

CF

(If the "CF-4, CG-4, CH-4 or CI-4" lubricating oil is
used with a high-sulfur fuel, change the lubricating oil
at shorter intervals. (approximately half))

CF, CF-4, CG-4, CH-4 or CI-4

Engine oil classication (API classication)

---

CF or CI-4
(Class CF-4, CG-4 and CH-4 engine oils cannot
be used on EGR type engines)

22

EGR: Exhaust Gas Re-circulation
l The CJ-4 engine oil is intended for DPF (Diesel Particulate Filter) type engines, and cannot be used on this machine.

except external EGR with external EGR

Models GF1800-R-2, GF1800E-R-2 ---

uFuel:

l Cetane number of 45 minimum. Cetane number greater than 50 is preferred, especially for temperatures below -20°C

(-4°F) or elevations above 1500 m (5000 ft).

l If diesel fuel with sulfur content greater than 0.5% (5000 ppm) sulfur content is used, reduce the service interval for engine oil

and lter by 50%.

l NEVER use diesel fuel with sulfur content greater than 0.05% (500 ppm) for EXTERNAL EGR type engine.
l DO NOT use diesel fuel with sulfur content greater than 1.0% (10000 ppm).
l Diesel fuels specied to EN 590 or ASTM D975 are recommended.
l No.2-D is a distillate fuel of lower volatility for engines in industrial and heavy mobile service. (SAE J313 JUN87)

uTransmission Oil:

The oil used to lubricate the transmission is also used as hydraulic uid. To insure proper operation of the hydraulic system and to
complete lubrication of the transmission, it is important that a multi-grade transmission uid is used in this system. We recommend

the use of KUBOTA UDT or SUPERUDTuid for optimum protection and performance.
(Consult your local KUBOTA Dealer for further detail.)
Do not mix different brands together.

lIndicated capacities of water and oil are manufacturer's estimate.

5.3 MAINTENANCE CHECK LIST

No.

Items

Engine start

1

system
2 OPC system check
3 All grease ttings grease
4 PTO drive shaft grease

Air cleaner
5

element

6 Battery condition check

7 Fuel lter element

8 Radiator core cleaning

Fan drive belt
9

tension

10 Engine oil change

Engine oil lter

11

cartridge

12 Transmission uid change

Transmission oil

13

lter cartridge

Transmission

14

strainer

PTO gear case

15

uid

Rear axle

16

differential case

uid (4WD)

check

cleaning

replacement

check
replacement

check

replacement

replacement

cleaning

change

change

Period

Every 50 Hr

(2 weekly)

¡

¡

¡

¡

50 Hr 100 Hr 200 Hr 300 Hr 400 Hr 500 Hr

¡ ¡ ¡ ¡ ¡

¡ ¡ ¡ ¡ ¡

¡ ¡ ¡ ¡ ¡

¡ ¡ ¡ ¡ ¡

Hours used

¡ ¡

¡ ¡

¡ ¡

Reference

After since

every 50 Hr 36

every 50 Hr 36

every 200 Hr 29

every 100 Hr *2 33

every 1000 Hr
or 1 year *5

every 100 Hr *7 34
every 100 Hr 25
every 500 Hr *3 25

¡

every 100 Hr

*3 38

every 200 Hr *1 25

every 200 Hr *1 26

¡

¡

¡

¡

¡

every 400 Hr 26

every 400 Hr *1 27

every 400 Hr 27

every 400 Hr 28

every 400 Hr 28

page

29

33

31

23

No.

Items

Rear axle gear

17

case (right and

left) uid (4WD)

Fuel injection

18

nozzle injection

pressure

19 Radiator cleaning

Anti-freeze and

20

coolant

21 Injection pump check

22 Fuel line

23 Intake air line

Engine breather

24

hose

Radiator hose

25

and clamp

26 Hydraulic hose

27 Fuel system bleeding
28 Fuse replace 35
29 Light bulb replace 37

Period

change

check

change

check every 1 year *4 24
replacement every 4 years *3 24
check every 1 year *4 30
replace every 4 years 31
check every 1 year *4 —
replace every 4 years *3 —
check every 1 year *4 32
replace every 4 years *3 32
check every 1 year *4 —
replacement every 4 years *3 —

Every 50 Hr

(2 weekly)

50 Hr 100 Hr 200 Hr 300 Hr 400 Hr 500 Hr

Hours used

¡

Reference

After since

every 400 Hr 28

every 1500 Hr
*3

every 2000 Hr
or 2 years *6

every 2000 Hr
or 2 years *6

every 3000 Hr
*3

Service as
required

page

25

31

32

25

24

IMPORTANT

The jobs indicated by ●

must be done initially.

*1 The initial 50 hours should not be a replacement cycle.
*2 Air cleaner should be cleaned more often in dusty conditions than in normal conditions.
*3 Consult your local KUBOTA Dealer for this service.
*4 Replace if any deterioration (crack, hardening, scar, or deformation) or damage occurred.
*5 Every 1000 hours or every 1 year whichever comes faster.
*6 Every 2000 hours or every 2 years whichever comes faster.
*7 When the battery is used for less than 100 hours per year, check the battery condition by reading the indicator annually.

24

6. CHECK AND MAINTENANCE

6.1 FUEL

Checking and Refueling

■

WARNING

To avoid serious injury or death:

Handle fuel carefully. If the engine is running, do ●

not ll the fuel tank. If engine is hot, let engine

cool several minutes before adding fuel. Do not

smokewhilellingthefuel tankorservicing the
fuelsystem.Fillfueltank onlytobottom ofller

neck.

(1) Bleeding screw

Bleeding the Fuel Lines

■

Air must be removed:

(1) When the fuel lter and lines are removed.

(2) When fuel tank is completely empty.
(3) After the machine has not been used for a long period of

time.

IMPORTANT:

Be careful not to spill fuel on your machine. Fuel may ●
damage plastic. Wipe up spilled fuel immediately.

Check the fuel level. Take care that the fuel tank does not
become empty.

Fuel tank capacity 20 L (5.3 U.S.gals.)

(1) Use No.2 diesel fuel.
(2) Use No.1 diesel fuel if the temperature is below -10°C

(14°F).

(3) Always use a strainer in refueling to prevent fuel injection

pump contamination.

(4) Once the fuel tank becomes empty, air admitted to the

fuel system. In such a case, it will be necessary to bleed
the fuel system before the engine will start.

IMPORTANT:

If the engine runs out of fuel and stalls, the engine ●
components may be damaged.
Be careful not to spill during refueling. If a spill should ●

occur, wipe it off at once, or it may cause a re.
To prevent condensation (water) accumulation in the fuel ●
tank, ll the tank before parking overnight.

Bleeding procedure is as follows:

WARNING

To avoid serious injury or death:

Do not bleed the fuel system when the engine is ●
hot.

(1) Fill the fuel tank with fuel.
(2) Turn the key switch to the ON position.
(3) Open the bleed screw.
When bubbles disappear from fuel coming out of the

plug, tighten the bleed screw.

Checking Fuel Line

■

WARNING

To avoid serious injury or death:

Stop the engine when attempting to check and ●
change prescribed below.
Never fail to check the fuel line periodically. The ●
fuel line is subject to wear and aging, fuel may

leakoutontotherunningengine,causingare.

(1) If the clamp is loose, apply a slight coat of lubricant onto

the threads and retighten it securely.

(2) The fuel line is made of rubber and ages regardless of

service period.

(3) After inspection, if the fuel line and clamps are found

damaged or deteriorated, replace them.

(4) After the fuel line and clamp have been replaced, bleed

the fuel system.

IMPORTANT:

When the fuel line is disconnected for maintenance ●
or repair, close both ends of the fuel line with a piece
of clean cloth or paper to prevent dust and dirt from
entering. Entrance of dust and dirt causes malfunction of
the fuel injection pump. In addition, particular care must
be taken not to admit dust and dirt into the fuel pump.

Fuellter

■

Change fuel lter every 500 hours.

25

(1) Fuel lter

Checking Fuel Injection Nozzle Injection

■

Pressure

Consult your local KUBOTA Dealer for this service.

Checking Injection Pump

■

Consult your local KUBOTA Dealer for this service.

6.2 ENGINE OIL

Oil level check and Replenishment

■

(1) Engine oil port
(2) Oil dipstick

(4) When using a different brand or viscosity oil from the

previous one, remove all of the old oil. Never mix two
different types of oil.

(5) Use the proper Engine Oil SAE according to the ambient

temperatures. (See page 21)

Engine Oil Change

■

(A) "UPPER LEVEL"
(B) "LOWER LEVEL"

WARNING

To avoid serious injury or death:

Before changing the oil, be sure to stop the ●
engine.

(1) To change the used oil, remove the drain plug at the

bottom of the engine and drain the oil completely. All the
used oil can be drained out easily when the engine is
still warm.

(2) Fill with the new oil up to the upper notch on the

dipstick.

WARNING

To avoid serious injury or death:

Before checking the oil, be sure to stop the ●
engine.

(1) Check engine oil before starting the engine for at least 5

minutes after the engine has stopped.

(2) To check the oil level, remove the dipstick, wipe it clean,

replace it, and draw it out again. Check to see that the
oil level is between the two notches.

(3) If the level is too low, add new oil to the recommended

level at the oil port.

(1) Drain plug

26

Engine Oil Filter Cartridge Change

■

WARNING

To avoid serious injury or death:

Be sure to stop the engine before changing the ●

oilltercartridge.

(1) The oil lter cartridge must be changed every 200

service hours (Oil Filter Cartridge 15841-3243-1).

(2) Apply a slight coat of oil onto the rubber gasket of new

cartridge.

(3) To install the new cartridge, screw it in by hand. Over

tightening may cause deformation of the rubber gasket.

(4) After the new cartridge has been replaced, the engine

oil level normally lowers a little. Add engine oil to proper

level. Check for oil leaks around lter gasket.

(1) Dipstick

(2) Transmission uid port

(A) "UPPER LEVEL"
(B) "LOWER LEVEL"

IMPORTANT:

To prevent serious damage to the engine, replacement ●
element must be highly efcient. Use only a genuine
KUBOTA lter or its equivalent.

(1) Engine oil lter cartridge

6.3 TRANSMISSION FLUID

WARNING

To avoid serious injury or death:

Be sure to stop the engine before checking and ●

changingthetransmissionuid.

The uid in the transmission case is also used for the

hydrostatic drive system.
(1) To drain the transmission case, place oil pan underneath

the transmission case and remove the drain plug at the
bottom of the transmission case.

(2) After draining, disassemble and clean the strainers and

change the oil lter cartridge. After reassembling, ll
with UDT hydrostatic transmission uid.

(3) After running the engine for a few minutes, stop it and

check the oil level again; add oil to the prescribed level.

IMPORTANT:

Operate only at low RPM's immediately after changing ●
the transmission uid and lter cartridge. Keep the

engine at medium speed for a few minutes to insure
proper lubrication of all parts so there is no damage to
transmission.

Transmission Fluid Check and

■

Replenishment

Draw out the dipstick, wipe it clean, replace it, and draw it out

again. Check to see that the uid level is on the upper notch.
If low, replenish through the uid port. Use UDT hydrostatic
transmission uid or its equivalent. (See page 21)

(1) Drain plug

27

Transmission Oil Filter Cartridge Change

■

WARNING

To avoid serious injury or death:

Be sure to stop the engine before changing the ●

oillters.

(1) The oil lter cartridge must be changed every 400

service hours.

(1) Oil lter cartridge

Cleaning Hydraulic Oil Strainers

■

When changing the transmission uid, disassemble and

clean completely the oil strainers with kerosene. Use care
when reassembling to avoid damage to the strainer parts.

(1) Strainer

(1) Oil lter cartridge (66021-3606-1)

(2) Remove the oil lter cartridge by using the lter

wrench.
(3) Lightly tighten the screw (A) by using a screwdriver.
(4) Apply a slight coat of oil onto the cartridge gasket.
(5) To install the new cartridge, screw it in by hand. Over

tightening may cause deformation of rubber gasket.
(6) After the new cartridge has been replaced, the

transmission uid level normally lowers a little. Add uid

to proper level. Check for oil leaks around lter gasket.

IMPORTANT:

To prevent serious damage to a hydraulic system, ●
replacement lter must be a highly efcient, 10 μm lter.
Use only a genuine KUBOTA lter or its equivalent.

(1) Strainer
(2) O ring
(3) Suction pipe

28

6.4 PTO GEAR CASE FLUID

WARNING

To avoid serious injury or death:

Be sure to stop the engine before changing the ●

PTOgearcaseuid.

PTO Gear Case Fluid Change

■

When changing the transmission uid, change the PTO gear
case uid at the same time. Use UDT hydrostatic transmission
uid or its equivalent. (See page 21).

(1) PTO gear case uid port

6.5 REAR AXLE DIFFERENTIAL CASE
FLUID (4WD)

Remove the drain and lling port plug. After draining, replace
the drain plug and ll with new oil.

(1) Filling port plug
(2) Drain plug

(See page 21)

6.6 REAR AXLE GEAR CASE FLUID
(4WD)

Remove the drain and lling port plugs with hex head wrench

to drain the used oil. After draining, replace the drain plug

and ll with new oil.

(RIGHT AND LEFT) (See page 21)

(1) PTO gear case drain plug

(1) Filling port plug
(2) Drain plug
(3) Hex head wrench

29

6.7 OILING AND GREASING POINTS

Oil the following points before starting.
Grease the following points refering to MAINTENANCE
CHECK LIST. (See page 22)

(1) Center pin (2WD) (Grease)

(1) Link pivots (Grease)

(1) King pins (2WD) (Grease)

(1) Joint shaft (Grease)

(1) Seat adjuster (Grease)

(1) Speed control pedal shaft (Grease)

30

(1) PTO drive shaft (Grease)

NOTE:

In order to apply grease to PTO drive shaft, remove tire ●
RH.

(1) Rear wheel drive shaft (4WD) (Grease)

(1) Cable (Throttle) (Oil)

(1) Cable (4WD pedal) (Oil)

6.8 INTAKE AIR LINE

Checking Intake Air Line

■

WARNING

To avoid serious injury or death:

Before checking the intake air line, be sure to ●
stop the engine.

(1) Knuckle arm (4WD) (Grease)

(1) Check to see that hoses and hose clamps are tight and

not damaged.

31

(2) If hoses and clamps are found worn or damaged, replace

or repair them at once.

(1) Hose
(2) Hose clamps

Replacing Intake Air Line

■

Consult your local KUBOTA Dealer for this service.

6.9 RADIATOR

Checking, Flush Cooling System and

■

Changing Coolant

(1) Check the coolant level should be between the Low and

High mark. If the level is below the Low mark, remove
the recovery tank cap, and add clean water and anti­freeze.

IMPORTANT:

Do not start engine without coolant. ●
When mixing the anti-freeze with water, the anti-freeze ●
mixing ratio is 50 %.
Use clean, fresh water and anti-freeze to ll the radiator ●
and recovery tank.
Securely tighten the radiator cap and recovery tank cap. ●

(2) If the engine is stopped by over-load during operation, in

order for coolant to return from the recovery tank to the
radiator, keep the engine rpm idle a little while.

(3) Remove the radiator pressure cap and check to see

that the coolant level is just below the port. If short, add
coolant.

(4) To drain the used coolant, open the drain valves and

remove radiator cap. The radiator cap must be removed
to completely drain the radiator.

WARNING

To avoid serious injury or death:

Do not remove radiator ll cap until coolant ●
temperature is well below its boiling point.
Then loosen cap slightly to the stop to relieve
any excess pressure before removing cap
completely.

WARNING

To avoid serious injury or death:

Before checking the radiator, be sure to stop the ●
engine.

(1) Drain valve

(1) Radiator cap

(2) Over ow pipe

(3) Recovery tank
(4) Recovery tank cap

(A) "HIGHEST LEVEL"
(B) "LOWEST LEVEL"

(1) Drain valve

(5) After all coolant is drained, install the drain valve.

32

(6) Fill with clean water and cooling system cleaner.
(7) Follow directions of the cleaner instruction.

(8) After ushing, ll with clean water and anti-freeze

until the coolant level is just below the ll port on the

radiator.

(9) Be sure to close the radiator cap securely. If the cap is

loose or improperly closed, water may leak out and the
engine could overheat.

(10) The Radiator should be lled with part anti-freeze

and part water at all times as recommended by the
anti-freeze manufacturer. The anti-freeze contains
a corrosion inhibitor and will allow a higher operating
temperature in the radiator during the hot season.

(11) Do not use an anti-freeze and scale inhibitor at the same

time.

Checking Radiator Hoses (Water Pipes)

■

(1) If clamp bands are loose or water leaks, tighten bands

securely.

(2) Replace hoses and tighten clamp bands securely, if

radiator hoses are swollen, hardened or cracked.

Replace hoses and clamp bands if you checked and

found that hoses are swollen, hardened or cracked.

Anti-freeze

■

WARNING

To avoid serious injury or death:

When using anti-freeze, put on some protection ●
such as rubber gloves (Anti-freeze contains
poison.).
If it is swallowed, seek immediate medical help. ●
Do NOT make a person throw up unless told
to do so by poison control or a health care

professional.Usestandard rstaidand CPRfor

signs of shock or cardiac arrest. Call your local
Poison Control Center or your local emergency
number for further assistance.
When anti-freeze comes in contact with the skin ●
or clothing, wash it off immediately.
Do not mix different types of Anti-freeze. The ●
mixture can produce chemical reaction causing
harmful substances.

Anti-freezeisextremelyammableandexplosive ●
undercertainconditions.Keepreand children

away from anti-freeze.
When draining uids from the engine, place ●
some container underneath the engine body.
Do not pour waste onto the grounds, down a ●
drain, or into any water source.
Also, observe the relevant environmental ●
protection regulations when disposing of anti­freeze.

(1) Radiator hose

Precaution at Overheating

■

Take the following actions in the event the coolant temperature
be nearly or more than the boiling point, what is called
"Overheating".
(1) Stop the machine operation in a safe place and keep the

engine unloaded idling.

(2) Don't stop the engine suddenly, but stop it after about 5

minutes of unloaded idling.

(3) Keep yourself well away from the machine for further 10

minutes or while the steam blown out.

(4) Checking that there gets no danger such as burn, get rid

of the causes of overheating according to the manual,
see "Troubleshooting" section. And then, start again the
engine.

Always use a 50/50 mix of long-life coolant and clean soft
water in KUBOTA engines.
Consult your local KUBOTA dealer concerning coolant for
extreme conditions.

(1) Long-life coolant (hereafter LLC) comes in several

types. Use ethylene glycol (EG) type for this engine.

(2) Before employing LLC-mixed cooling water, ll the

radiator with fresh water and empty it again. Repeat this

procedure 2 or 3 times to clean up the inside.
(3) Mixing the LLC
Premix 50% LLC with 50% clean soft water. When

mixing, stir it up well, and then ll into the radiator.

(4) The procedure for the mixing of water and anti-freeze

differs according to the make of the anti-freeze and the

ambient temperature. Refer to SAE J1034 standard,

more specically also to SAE J814c.

IMPORTANT:

When mixing the anti-freeze with water, the anti-freeze ●
mixing ratio is 50 %.

Vol %

Anti-freeze

50 -37 -34 108 226

* At 1.013 x 10
A higher boiling point is obtained by using a radiator

Freezing Point Boiling Point *

°C °F °C °F

5

Pa (760 mmHg) pressure (atmospheric).

33

pressure cap which permits the development of pressure
within the cooling system.

(5) Adding the LLC

1. Add only water if the mixture reduces in amount by
evaporation.

2. If there is a mixture leak, add the LLC of the
same manufacturer and type in the same mixture
percentage.

*Never add any long-life coolant of different

manufacturer. (Different brands may have different
additive components, and the engine may fail to

perform as specied.)

(6) When the LLC is mixed, do not employ any radiator

cleaning agent. The LLC contains anti-corrosive agent.
If mixed with the cleaning agent, sludge may build up,
adversely affecting the engine parts.

(7) KUBOTA's genuine long-life coolant has a service life

of 2 years. Be sure to change the coolant every 2000
hours or every 2 years whichever comes faster.

NOTE:

The above data represent industry standards that ●
necessitate a minimum glycol content in the concentrated
anti-freeze.

Checking and Cleaning Radiator to

■

Prevent Overheating

Daily or after every 5 hours of operation, check to be sure
the radiator screen and radiator core are clean. Dirt or chaff
on the radiator screen or radiator core decrease cooling
performance.
(1) Remove the radiator screen and panel screen, and

remove all foreign material.

(2) Remove the dust from between the ns and the tube.

(3) Tighten the fan drive belt as necessary. For this, refer to

page 38.

(4) If scale forms in the tube, clean with the scale inhibitor

or its equivalent.

(5) Each time the panel screen is covered with grass during

operation, rub it off the screen with hand. Check the
radiator screen from time to time if grass often gets on
it.

(6) If the dust or chaff is accumulated inside of the panel,

remove the air intake screen and clean the inside of the
panel completely.

After cleaning, place the air intake screen properly.

IMPORTANT:

Be sure to stop the engine before cleaning the radiator ●
screen and panel screen.

(1) Panel screen
(2) Radiator screen

6.10 AIR CLEANER

WARNING

To avoid serious injury or death:

Before checking, be sure to stop the engine. ●

(1) The air cleaner uses a dry element, never apply oil.

(2) Do not touch the lter element except where cleaning

is required. To clean the element, use clean and dry
compressed air on the inside of the element. Air pressure
should not exceed 205 kPa (2.1 kgf/cm

(3) If the element is stained with carbon or oil, apply one of

the following cleaners or equivalent.

ND-1400 (by Donaldson)

(4) When cleaning the air lter element, do not remove the

cyclone from the air lter element, handle with care not

to damage it (do not hit it), and reinstall the element
correctly.

The damage of the element may cause serious trouble

to the engine.

2

, 30 psi).

34

(5) Replace the air cleaner element every 1000 hours or

every 1 year whichever comes faster.

(1) Air cleaner
(2) Air cleaner element
(3) Air cleaner band

6.11 BATTERY

DANGER

To avoid the possibility of battery explosion: For

the rellable type battery, follow the instructions

below.

Do not use or charge the rellable type battery ●
ifthe uidlevel isbelow theLOWER(lowerlimit

level) mark. Otherwise, the battery component
parts may prematurely deteriorate, which may
shorten the battery's service life or cause an

explosion. Check the uid level regularly and
add distilled water as required so that the uid

level is between the UPPER and LOWER levels.

Mishandling the battery shortens the service life and adds to
maintenance costs. Be sure to handle it correctly so that it will
develop its full potential performance.

(1) Battery
(2) Positive cable (
(3) Negative cable (

If the battery is weak, the engine is difcult to start and the

lights become dim. It is important to check the battery daily
and recharge before trouble occurs.

Battery Charging

■

)

)

DANGER

To avoid serious injury or death:

When the battery is being activated, hydrogen ●
and oxygen gases in the battery are extremely

explosive. Keep open sparks and ames away

from the battery at all times, especially when
charging the battery.

WARNING

To avoid serious injury or death:

Never take the battery cap off while the engine is ●
running.
Keep electrolyte away from eyes, hands and ●
clothes. If you are spattered with it, wash it away
completely with water immediately.

(1) Make sure each electrolyte level is somewhere between

the markings (A) and (B). Add a proper amount of
distilled water up to the highest level as required.

(2) The water in the electrolyte evaporates during

recharging. Liquid shortage damages the battery and
excessive liquid damages the machine body. If low, be

sure to ll up the battery with distilled water only.

(A) "HIGHEST LEVEL" (B) "LOWEST LEVEL"

35

(3) To slow charge the battery connect the battery positive

terminal to the charger positive terminal and the negative
to the negative, then recharge in the standard fashion.

(4) A boost charge is only for emergencies. It will partially

charge the battery at a higher rate and in a short time.
When using a boost-charged battery, it is necessary to
recharge the battery as early as possible. Failure to do
this extremely affects its service life.

DANGER

To avoid serious injury or death:

When connecting the battery, do not reverse the ●
polarities. Connection with reverse polarities
will cause spark and troubles to the battery and
electrical system in the tractor.
When disconnecting the cable from the battery, ●

start with the negative terminal rst. When
connecting,startwiththepositive terminal rst.

Reversing the steps may cause short-circuiting,
should a metallic tool touch the terminals.

Direction for Storage

■

(1) When storage the machine for long periods of time,

remove the battery from the machine, adjust the
electrolyte to the proper level by adding distilled water
only and store in a dry place out of direct sunlight.

(2) The battery self-discharges even while it is stored.

Recharge it once a month in hot seasons and once
every two months in cold seasons.

(3) Nut size for the battery terminals: (+)10 mm (-)10 mm.

6.12 TIRE PRESSURE

WARNING

To avoid serious injury or death:

Do not attempt to mount a tire on a rim. This ●

should be done by a qualied person with the

proper equipment.
Always maintain the correct tire pressure. Do not ●

inate tires above the recommended pressure

shown in the Operator's Manual.

Though the tire pressure is factory-set to the recommended
level, it naturally drops slowly in the course of time. Thus,

check it every day and inate as necessary.

Maximum tire pressures

Front Rear

22 psi 24 psi

(1) Ground (A) "INSUFFICIENT"

(B) "STANDARD"
(C) "EXCESSIVE"

6.13 FUSE

The machine electrical system is protected from potential
damage by fuses.
A blown fuse indicates that there is an overload or short
somewhere in the electrical system.

IMPORTANT:

Before replacing a blown fuse, determine why ●
the fuse blew and make any necessary repairs.
Failure to follow this procedure may result in
serious damage to the machine electrical system.
Refer to the "TROUBLESHOOTING" section of this

manual or your local KUBOTA Dealer for specic

information dealing with electrical problems.

If any of the fuses should blow, replace with a new one of
the same capacity. Do not use the fuse except indicated
capacity.

IMPORTANT:

Do not use tires other than those approved by KUBOTA. ●

WARNING

To avoid serious injury or death:

Never operate the machine with a loose rim, ●
wheel, or axle.
Whenever bolts are loosened, retighten to ●

speciedtorque.

Check all bolts frequently and keep them ●
tightened.

36

Replacement of the fuse.
(1) Open the fender cover.
(2) Remove the lid of the fuse box.
(3) Disconnect the blown fuse.
(4) Place a new fuse of same capacity in position.
(5) Close the fender cover.

(1) Fuse box

IMPORTANT:

If the new fuse happens to quickly blowout, contact your ●
dealer for inspection and repair. Never use any wire or
foil.

6.14 CHECKING ENGINE START SYSTEM

The Engine Start System in your machine are designed to
protect you while operating. Please check these Engine Start
System periodically. It is recommended to check the Engine
Start System before daily operation.

WARNING

To avoid serious injury or death:

Do not allow anyone near the machine while ●
testing.
If the machine does not pass one of the following ●
tests, do not operate the machine. See your local
KUBOTA Dealer.
Check while seated. ●

Safety switch

♦

Test 1: Switch for the PTO lever
(1) Depress the brake pedal fully.
(2) Shift the PTO lever to engaged position.
(3) Turn the key to START position.
(4) The engine must not crank.
Test 2: Switch for the brake pedal
(1) Disengaged PTO lever.
(2) Release the brake pedal.
(3) Turn the key to START position.
(4) The engine must not crank.

Fusible link

■

The fusible link is intended to protect the wiring. If the link
breaks down, pinpoint the cause. Be sure to use the genuine
part, not any substitute.

(1) Fusible link

6.15 CHECKING OPC SYSTEM

The OPC (Operator Presence Control) system in your
machine are designed to protect you while operating.
Please check these OPC system periodically. It is
recommended to check the OPC system before daily
operation.

WARNING

To avoid serious injury or death:

Do not allow anyone near the machine while ●
testing.
If the machine does not pass one of the following ●
tests, do not operate the machine. See your local
KUBOTA Dealer.
Sit on the operator's seat for all tests. ●

1. Check the following tests before operating the
machine.

2. If the machine does not pass one of the following tests,
do not operate the machine. See your local KUBOTA
Dealer.

Test 1: Switch for the operator's seat (OPC)
(1) Lock the parking brake.
(2) "START" the engine.
(3) Release the parking brake and stand up from the

operator's seat. (Do not get off the machine.)

37

(4) Make sure that the engine "STOPS".
Test 2: Switch for the operator's seat (OPC)
(1) Run the engine at half throttle.
(2) Engaged the PTO clutch lever.
(3) Stand up. (Do not get off the machine.)
(4) Engine must shut off.

6.16 REPLACING LIGHT BULB

1. Head light
Take the bulb out of the light body and replace with a

new one.

2. Other lights
Detach the lens and replace the bulb.

Light Capacity

Headlight 15 W

38

7. ADJUSTMENTS

7.2 BRAKE

WARNING

To avoid serious injury or death:

When making adjustments, park the machine on ●
a level surface, apply the parking brake and stop
the engine and remove the key.

7.1 FAN DRIVE BELT TENSION

If the fan drive belt becomes loose, the engine may overheat.
To adjust, loosen bolts and turn the dynamo to stretch the
belt. After adjustment, securely tighten the bolts.

Moderate belt tension:

The belt should deect approx. 10 mm (0.4 in.) when the
center of the belt is depressed with nger pressure of 98 N

(10 kgf, 22 Ibs).

■

(1) The pedal free travel S1 to the beginning of brake

(2) If the free travel S1 is not correct, loosen the lock nut (2)

(3) After adjustment, securely retighten the lock nut.

Check and Adjustment of the Brake Pedal

engaged should be from 10 to 50 mm (0.4 to 2.0 in.) for
2WD, from 20 to 60 mm (0.8 to 2.3 in.) for 4WD.

and turn the nut (3) until the proper stroke is achieved.

(1) Cap
(2) Tension bolt
(3) Dynamo
(4) Adjusting bolt

IMPORTANT:

When replacing fan drive belt, be careful not to catch it on ●
the cap under the water pump. See the illustration above.

(A) 10 mm (0.4 in.)

(1) Brake pedal
(2) Lock nuts

(5) Bolt (6) Stopper (7) Speed set lever

Check the Speed Set Device Release

■

The brake pedal stroke concerns with the speed set device.
(1) Check the speed set device works and release

automatically when the brake pedal is depressed fully.

(2) If not, loosen the bolt (5) and slide the stopper (6) to the

proper position.

(3) Nut
(4) Spring

7.3 REAR AXLE (2WD)

Check and Adjustment of the Rear Axle

■

End Play

(1) Jack up the rear of frame.
(2) Measure the clearance (l) between the rear axle (3) and

rear axle support (5).

(3) If the measurement exceeds the allowable limit, adjust

the nut (1).

(1) Nut
(2) Spring lock pin
(3) Rear axle
(4) Center pin
(5) Rear axle support

39

(1) Nut
(2) Spring lock pin
(3) Rear axle
(4) Center pin
(5) Rear axle support
(l) Rear axle end play

NOTE:

When fastening the center pin (4), rst tighten the nut (1) ●
until the rear axle can turn smoothly, then loosen the nut

the nearest pin hole is reached, and nally put the spring

lock pin in position.

Rear axle end play

(l)

Factory spec. 0.1 to 0.4 mm

Allowable limit 1.0 mm

40

8. TROUBLESHOOTING

8.1 BATTERY TROUBLESHOOTING

Trouble Cause Remedy Preventive measure

Starter does not function. Battery overused until

From beginning starter does
not function, and lights soon
become dim.

When viewed from top, the
top of plates looks whitish.

Recharging is impossible. Battery life expired.
Terminals are severely

corroded and heat up.

Battery electrolyte level drops
rapidly.

If you have any questions, contact your KUBOTA dealer.

•

lights are dim.
Battery has not been

•

recharged.
Poor terminal connection.

•

Battery life expired.

•

Insufcient charging.

•

Battery was used with

•

an insufcient amount of

electrolyte.
Battery was used too much

•

without recharging.

•

Poor terminal connection.

•

There is a crack or pin holes

•

in the electrolytic cells.

Charge battery sufciently.

•

Clean the terminal and

•

tighten securely.

Renew battery.

•

Charge battery sufciently.

•

Add distilled water and

•

charge the battery.

Charge battery sufciently.

•

Replace battery.

•

Clean the terminal and

•

tighten securely.

Replace battery.

•

Charge the battery

•

properly.

Keep the terminal

•

clean and tight.
Apply grease and treat with
anti-corrosives.

Battery must be seviced

•

properIy before initial use.

Regularly check the

•

electrolyte level.

Charge the battery

•

properly.

Keep the terminal

•

clean and tight.
Apply grease and treat with
anti-corrosives.

8.2 MACHINE TROUBLESHOOTING

Trouble Cause Remedy

Machine operation is not smooth. Hydrostatic transmission uid is

Machine does not move while engine is
running.

Machine moves when speed control
pedal is not depressed. (Engine is
operated.)

If you have any questions, contact your KUBOTA dealer.

•

insufcient.

Filter is clogged.

•

Strainer is clogged.

•

Parking brake is on.

•

Transmission uid level is insufcient.

•

Hydrostatic lever linkage is not

•

correctly adjusted.

Replenish oil.

•

Replace the lter.

•

Clean the strainer.

•

Release the parking brake.

•

Replenish oil.

•

Ask your dealer for hydrostatic lever

•

linkage adjustment or pressure
adjustment.

8.3 ENGINE TROUBLESHOOTING

If the engine is not performing correctly, refer to the table below for the cause and its corrective measure.

Trouble Cause Remedy

Engine is difcult to start. No fuel ow.

Insufcient engine power. Insufcient fuel.

Engine stops suddenly. Insufcient fuel.

Exhaust fumes are colored. Fuel quality is poor.
Engine Overheats. Engine overloaded.

If you have any questions, contact your KUBOTA dealer.

•

Air and water is in the fuel system.

•

In winter, oil viscosity increases, and engine

•

cranks slow.
Battery is discharged and the engine will not

•

crank.

•

The air cleaner is clogged.

•

•

•

•

Low coolant level.

•

Loose or damaged fan belt.

•

Dirty radiator core or grille screens.

•

Coolant ow route corroded.

•

Check the fuel tank and the fuel lter, and

•

remove dirt build-up.

Replace lter if necessary.

•

Check to see if the fuel lines are tight. Bleed

•

the fuel system. (see page 24)
Use oils of different viscosities, depending

•

on ambient temperatures.
Charge the battery.

•

In cold weather, always remove the battery,

•

charge it and store it indoors. Install it only
when the machine is going to be used.

Check the fuel system.

•

Clean the element.

•

Refuel.

•

Bleed the fuel system.

•

Change the fuel.

•

Lower speed or reduce load.

•

Fill cooling system to proper level; check

•

radiator and hoses for loose connections or
leaks.

Adjust fan belt.

•

Remove all trash.

•

Flush cooling system.

•

41

42

9. LONG-TERM STORAGE

STORING AND HANDLING FUEL

WARNING

To avoid serious injury or death:

To reduce re hazards, allow the engine and ●
exhaust system to cool before storing the vehicle
in an enclosed space or near combustible
materials.
Do not operate the engine in a closed room. ●
The air will be polluted with exhaust gas which is
very dangerous.
Do not clean the machine with engine running. ●
When storing, remove the key from the key ●
switch to avoid unauthorized persons from
operating the machine and getting injured.

When the machine is not going to be operated for two or
three months or longer, clean the machine and perform the
following operations before storage.
(1) Repair the parts where needed.
(2) Check bolts and nuts, tighten as necessary.
(3) Apply grease or engine oil to parts most likely to rust.

(4) Inate the tires to a little above the standard pressure

levels.

(5) Change the engine oil and run the machine for ve

minutes so that the oil circulates through the entire
system.

(6) Drain fuel tank and run engine to eliminate fuel from the

lines.
(7) Drain the cooling system.
(8) Lower the implement to the ground.
(9) Remove the battery from the machine, recharge it,

adjust the electrolyte to the proper level, and store in a

dry place out of direct sunlight.
(10) The battery runs down over time even while in storage.

Recharge it once a month in hot seasons and once

every two months in cold seasons.
(11) Store the machine where it is dry and sheltered from

rain. Further cover the machine with a tarpaulin.

(12) When leaving the machine outdoors, protect the mufer

opening from rain.

(1) Buy clean, high quality fuel from a reliable supplier.

IMPORTANT:

Keep dirt, scale, water or other foreign material out of ●
fuel.

(2) Keep fuel in a clean container in a protected area away

(3) Drain water and sediment from storage tank regularly.
(4) Keep storage tank on its side with plug up.
(5) Avoid storing fuel for a long time. If you keep fuel for

IMPORTANT:

Remove the mower deck shield and clean all debris off ●
deck. Paint any surfaces that have exposed metal.

from buildings.

a long time, add a fuel conditioner to prevent water
condensation and varnish. See your KUBOTA dealer for
conditioner.

43

10. WIRING DIAGRAM

3

SAFETY FIRST

IMPORTANT :

NOTE :

3

DANGER :

3

WARNING :

3

CAUTION :

Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not
avoided, could result in minor or moderate injury.

Indicates that equipment or property damage could result if
instructions are not followed.

Gives helpful information.

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.

FOREWORD

You are now the proud owner of a KUBOTA RC48-F19, RC54-F19, RC60-F19
ROTARY MOWER. This rotary mower is a product of KUBOTA's quality engineering
and manufacturing. It is made of excellent materials and under a rigid quality control
system. It will give you long, satisfactory service. To obtain the best use of your
machine, please read this manual carefully. It will help you become familiar with the
operation of the machine and contains many helpful hints about machine
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 become outdated. KUBOTA
distributors and dealers will have the most up-to-date information. Please do not
hesitate to consult them.

SAFE OPERATION ........................................................1

1. SERVICE.........................................................................3

2. INTRODUCTION .............................................................3

2.1 SPECIFICATIONS ...................................................3

2.2 MOWER DECK TERMINOLOGY ............................4

3. SETTING UP ...................................................................5

3.1 PRE-ASSEMBLY .....................................................5

3.2 SETTING UP THE MOWER ...................................5

4. MOUNTING AND DISMOUNTING THE MOWER ..........7

5. OPERATION ...................................................................8

5.1 MAKING THE MOST OF YOUR MOWER ..............8

5.2 CUTTING HEIGHT ..................................................8

5.3 OPERATING MOWER ............................................9

6. MAINTENANCE ............................................................10

6.1 MAINTENANCE CHECK LIST ..............................10

6.2 CHECK AND MAINTENANCE ..............................10

6.3 BLADE REPLACEMENT .......................................11

6.4 BELT REPLACEMENT ..........................................13

6.5 ADJUSTING THE LIFT RODS ..............................13

6.6 FRONT GAUGE WHEEL ......................................13

6.7 ADJUSTING THE LIFT SPRINGS (2WD) .............14

6.8 TIGHTENING TORQUE CHART ...........................14

7. TROUBLESHOOTING ..................................................15

SAFE OPERATION

Careful operation is your best insurance against an accident. Read this section carefully before operating the mower. All operators,
no matter how much experience they may have had, should read this and other related manuals before operating mower. It is the
owner's obligation to instruct all operators in safe operation.

1

1. Keep bystanders at a safe distance from the machine

during mowing operations.

2. Prior to mowing operations, clear area to be mowed of

all objects which might be picked up and thrown by the

mower. Mow only in daylight or in good articial light.

3. Do not wear loose clothing while operating the mower.

Loose clothing could become entangled in moving

parts, causing personal injury.

4. Do not stand on the mower.

5. Before dismounting the front mower.
a) Shut off the engine,
b) remove the key,
c) set the parking brake,
d) allow the blades to stop.

6. Securely tighten all hardware before operating the

mower.

7. Read this manual and the front mower operator's

manual before operating mower. Allow only a properly

trained person to operate the front mower.

8. Before starting the engine, disengage the FRONT PTO

and shift the front mower transmission into neutral.

9. Hillside operation is dangerous and is not

recommended.
If it is necessary to mow on a hillside, use extreme

caution. Never mow across the face of a slope.

10. While making turns in rough terrain, reduce front mower

speed.

11. Upon striking a foreign object, stop and inspect the front
mower and the mower for damage.

Repair the damage before resuming equipment

operation.

12. If the mower discharge deector becomes clogged, stop

the front mower; disengage the mower drive; shut off the

engine and remove the key, and clean out the deector

before continuing.

13. Know how to stop the mower and engine quickly.

Be prepared for any emergency situation.

14. When mowing in rough terrain or in high grass, set the
mower at the highest cutting level to reduce the possibility
of the mower striking debris or hidden objects.

15. Before operating the front mower in reverse, look to see
if the area is clear of all objects.

16. Do not operate the mower without all shields, guards
and ROPS in place.

17. KUBOTA recommends the use of ROPS and seat belt in
almost all applications.

Always use seat belt when the front mower is equipped

with a ROPS.

Never use the seat belt when the front mower is not

equipped with a ROPS.

18. Never attempt to make adjustment or repairs of any
kind while the front mower and mower are running. Shut
off the engine, remove the key and allow the blades to
stop.

19. Replace damaged or illegible safety decals.

See next page for required labels.

2

MOWER SAFETY LABELS

CARE OF SAFETY LABELS

(1) Keep safety labels clean and free from obstructing material.
(2) Clean safety labels with soap and water, dry with a soft cloth.
(3) Replace damaged or missing safety labels with new labels from your KUBOTA dealer.

(4) If component(s) with safety label(s) afxed is (are) replaced with new part(s), make sure new safety label(s) is (are) attached

in the same location(s) as the replaced components.

(5) Mount new safety labels by applying on clean, dry surface and pressing any bubbles to outside edge.

1. SERVICE

(1) When in need of parts or of service, give the serial

number of the Mower to the dealer.

(2) The serial number is located on the right side of the

deck.

(3) For your reference, please record the serial number in

the space provided.

KUBOTA MOWER

MODEL ..................................................................................

SERIAL NUMBER .................................................................

DATE OF PURCHASE ..........................................................

NAME OF DEALER ...............................................................

3

(1) Serial number

2. INTRODUCTION

2.1 SPECIFICATIONS

Model RC48-F19 RC54-F19 RC60-F19

Mounting method 2 point linkage

Adjustment of cutting height Gauge wheel

Cutting width mm (in.) 1224 (48) 1372 (54) 1524 (60)

Cutting height mm (in.) 25 to 102 (1.0 to 4.0)

Weight (Approx.) kg (lbs.) 95 (209) 112 (247) 125 (275)

Blade spindle speed rpm (r/s) 3646 (60.8) 3255 (54.2) 2929 (48.8)

Blade tip velocity fpm (m/s) 15930 (80.9) 15930 (80.9) 15790 (80.2)

Blade length mm (in.) 424 (16.7) 475 (18.7) 523 (20.6)

Number of blades 3

Total length mm (in.) 770 (30.3) 805 (31.7) 858 (33.8)

Dimensions

Total width mm (in.) 1535 (60.4) 1737 (68.4) 1864 (73.4)

Total height mm (in.) 407 (16.0)

4

2.2 MOWER DECK TERMINOLOGY

3. SETTING UP

5

When the RC48-F19, RC54-F19, RC60-F19 are shipped,
some of the parts are removed and packed separately. Read
the following procedure to properly assemble the mower.

3.1 PRE-ASSEMBLY

Take out all mower components from the case and check the
parts by the illustration.

3.2 SETTING UP THE MOWER

(1) Attach both gauge wheel arms and center frame to the

deck with M10 bolts, spring washers, at washers and

nuts.

(1) 8-M10 x 28 bolts, Spring washers, Flat washers and

nuts

(2) 4-M10 x 25 bolts

(2) Attach the front gauge wheels to the arms with clevis

pins and snap rings.

(1) Front gauge wheel
(2) Gauge wheel arm
(3) Clevis pin

10 x 55, Snap ring

6

(3) Attach the front anti-scalp roller and brackets to the deck

with M10 bolts.

(1) Deck
(2) Bracket

(4) Attach the discharge deector, deector stopper and

spacers (RC48 only) to the deck with M10 bolts, spring
washers and nuts. Secure the spring to the discharge

deector as illustrated.

NOTE:

Be sure to direct the deector stopper as shown. ●

(3) Scalp roller

(4) 4-M10 x 25 bolts

(5) Attach the anti-scalp roller with roller pin, plain washer

and cotter pin at hole (A).

(1) Anti-scalp roller
(2) Roller pin, Plain washer, Cotter pin

(A) Hole
(B) Hole

(1) Discharge deector
(2) Bolt (3-M10 x 25)

(3) Spacer (RC48 only)
(4) Spring washer
(5) Nut

(6) Bolt
RC48: M10 x 35
RC54, 60: M10 x 28
(7) Deector stopper

(8) Spring

4.

MOUNTING AND DISMOUNTING THE MOWER

7

(1) Push the mower deck under the mower links.

WARNING

To avoid serious injury or death:

The mower links (left hand, right hand) are ●
spring-loaded. Have an assistant hold the arm
in position when mounting mower deck.

(1) Mower link

(2) Set pin, Clevis pin

(5) Pull back coupler of the universal joint.
Push the universal joint onto the PTO shaft until the

coupler locks.

Slide the universal joint back and forward to make sure

the universal joint is locked securely.

(1) Coupler
(2) Yoke

IMPORTANT:

Finally pull the universal joint to see if it is tight in position. ●

(2) Attach the front end of the mower links to the mower

deck with clevis pins and hairpins.
(3) Start engine, raise implement, and shut off the engine.
(4) Install the lift rods to the mower deck with lock pins.

(1) Set pin
(2) Clevis pin
(3) Mower deck

(4) Lift rod
(5) Lock pin

(6) Mower link

(6) To dismount the mower, reverse the above procedure.

8

5. OPERATION

5.1 MAKING THE MOST OF YOUR

MOWER

(1) When using your mower for the rst time, choose

a smooth level area and cut in straight and slightly

overlapping strips.
(2) The size and type of the area to be mowed will

determine the proper mowing pattern. Take into account

obstructions, such as trees, fences and buildings. To

keep grass cuttings off fences, sidewalks, etc., it is

advisable to go over the outside of the area to be mowed

several times in a clockwise direction. To mow the area

remaining, work in a counterclockwise direction so the

cuttings are dispersed onto the previously cut area.
(3) Always keep the left side of the mower toward trees,

posts or other obstacles on the rst trip around the

obstacle.
(4) Most lawns should be mowed to keep the grass

approximately 50 to 80 mm (2 to 3 in.) high. Best results

are obtained by cutting often and not too short. To keep

a green lawn, never mow more than one third of the

height of the grass or a maximum of 25 mm (1 in.) in one

mowing.
For extremely tall grass, set the cutting height at

maximum height for the rst mowing, then reset to the

desired height and mow again. Allow the grass to grow

to 8 cm (3 in.), then cut off only the top inch.
(5) On thick, springy grass or soft ground, the mower rollers

may sink into ground giving too low a cut.
Adjust the cutting height to get the desired height of

cut.
(6) For best appearance, grass should be cut in the

afternoon or evening when it is free of moisture.

5.2 CUTTING HEIGHT

DANGER

To avoid serious injury or death:

Never operate mower in transport position. ●

(1) Check the both front gauge wheel pressures daily and

inate as necessary to prevent uneven cutting height.

(See page 13)

(2) To set the cutting height, adjust the front gauge wheels,

lift rods. Cutting height can be adjusted from 25 to 102
mm (1.0 to 4 in.).

NOTE:

For easy adjusting of the lift rods, place a wooden block ●
under the rear end of the mower deck before lowering the
mower deck.
Cutting height will change because of the ground ●
condition.

(3) Lower the mower deck by pushing the hydraulic control

lever forward. This lowers the mower deck from the
transport position to the operating position.

(4) Use the higher setting for mowing in a rough area or

when mowing high grass. Lower setting should be used
only for smooth lawns where short grass is desired.

5.3 OPERATING MOWER

DANGER

To avoid serious injury or death:

Do not operate the mower without discharge ●

deectorproperlyboltedinplace.

WARNING

To avoid serious injury or death:

Clear the work area of objects which might be ●
picked up and thrown.
Do not direct the opening of the deector at ●
bystanders or animals. Ejected objects may
cause injury. Plan your mowing carefully before
starting operations.
Keep bystanders and animals away from the ●
mowing area.
Be sure to disengage the front PTO clutch of ●
the mower before starting the engine.

9

(1) Keep the engine running at full throttle for best results.
Control travel speed by speed control pedal.
(2) During heavy duty use, operate the machine at a slower

ground speed or go over the area twice.
(3) Keep the mower deck and gauge wheels in the raised

position when the mower is not being used.
(4) The mower will not cut cleanly if the ground speed is too

high or if the blade speed drops due to an overload.

NOTE:

To prevent the engine from overheating, keep the ● radiator
and radiator net clean.

10

6. MAINTENANCE

6.1 MAINTENANCE CHECK LIST

Used hours (Change or check every interval shown below)

No. Check Point

Anything unusual in previous

1

day's operation

2 Oil leakage check

Make sure blade cap screws

3

are tight.
4 Blade and belt wear check
5 All hardware check
6 Make sure all pins are in place.
7 Mower deck cleaning
8 Gear box oil check
9 Gear box oil change

Greasing

Front gauge wheel brackets

•

Three spindle shafts

•

10

11 Gear box oil seal check
12

IMPORTANT:

« Replace if any deterioration (crack, hardening, scar, or deformation) or damage occurred.

NOTE:

*1 The initial 50 hours should not be a replacement cycle.

Universal joint

•

Belt tension pivot and

•

tension pulley

Gear box oil seal replace

The jobs indicated by ●

must be done after the rst time at 50 hrs.

daily

check

¡

¡

¡

¡
¡
¡
¡
¡

¡

50 100 150 200 250 300 350 400

*1

¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡

¡ ¡

1

year4 years

«

¡

Reference

After since

every 150 hrs. 10

every 50 hrs. 11

1 year —

4 years

page

—

10

11, 12

12, 13

—
—
—
10

11

—

6.2 CHECK AND MAINTENANCE

WARNING

To avoid serious injury or death:

Stop the engine, set the parking brake, and ●
remove the key.

Gear box oil

■

(1) To check the oil level, remove the check plug (bolt).

Place mower on level surface.

•

Loosen the check plug. Oil must seep from the
opening. If low add oil.
(Use SAE 90 gear oil)

0.4 L (0.42 qts.)... RC54, RC60

0.35 L (0.37 qts.)... RC48

(1) Drain plug (Bolt) (2) Inlet and check plug (Bolt)

IMPORTANT:

Do not exceed check plug level. ●

11

Greasing

■

(Use multipurpose EP2 grease (NLGI
Grade No.2).)

(1) Universal joint.

(1) Grease ttings

(2) Front gauge wheel brackets.

(4) Belt tension pivot and tension pulley.

(1) Grease tting (Belt tension pulley)
(2) Grease tting (Belt tension pivot)

6.3 BLADE REPLACEMENT

WARNING

To avoid serious injury or death:

Be sure to stop the engine and remove the key. ●
Blades may be sharp. When you handle blades, ●
wear heavy gloves or wrap end of blade with a
rag.

(1) Front gauge wheel bracket

(2) Grease tting

(3) Three spindle shafts.

IMPORTANT:

The bolt (blade) has R.H. threads. Turn it ●
counterclockwise to loosen.
To prolong the service life of the blade, reposition its ●

sections as shown in the gure below.

Before checking or replacing the blade, wipe grass ●
and mud off the top and inside of the mower.
Especially clean up the inside of the belt cover, because
otherwise the belt life will be reduced.

(1) LH blade
(2) Center blade
(3) RH blade

(1) Grease tting

12

The blade cutting edges should be kept sharp at all times.
Sharpen the cutting edges, if they resemble the blade in

gure (B). Replace the blades if they appear similar to the
blade as shown in gure (C).

(A) "NEW BLADE"
(B) "WORN BLADE"
(C) "CRACKED BLADE"

(1) Remove the mower from the vehicle and turn it over to

expose the blades.

(2) Wedge a block of wood between the blade and mower

housing or install box wrench over pulley nut to prevent
spindle from rotating while removing blade bolts, then
loosen the blade bolt as illustrated.

(4) To check the blade for balance, place a small rod through

the center hole. The blade should balance on this rod.

If the blade is not balanced, le the heavy side of the

blade until balance is achieved.

(5) Attach the blade as illustrated. (RC48-F19)

(1) Spindle holder
(2) Blade

(3) 2-Cup washers

(4) Friction washer

NOTE:

Make sure the cup washer is not attened out or worn, ●
causing blade to slip easily. Replace both cup washers
and friction washer if either is damaged.

(RC54-F19, RC60-F19)
Pass the spline boss through the blade and 2 cup
washers, and tighten the bolt.

(5) Plain washer

(6) Spring washer

(7) Bolt

(A) "Loosen"

WARNING

To avoid serious injury or death:

Wear heavy gloves when removing blades. ●

NOTE:

Use the proper metric size box or socket wrench to ●
tighten or loosen the blade mounting bolt.

(3) To sharpen the blades, clamp the blade securely in a

vise.

Use a large mill le and le along the original bevel until

sharp.

(1) Spindle holder
(2) Blade

IMPORTANT:

Tightening torque of the blade bolts. ●

Center blade

Outer blade

(3) 2-Cup washers

(4) Spline boss

RC48-F19 RC54-F19, RC60-F19

10 to 12 kgf-m

(72 to 87 ft-lbs)

12.6 to 15 kgf-m
(91 to 109 ft-Ibs)

(5) Bolt

10 to 12 kgf-m

(72 to 87 ft-lbs)

13

6.4 BELT REPLACEMENT

(1) Remove the mower from the tractor.
(2) Remove the left and right hand shields from the mower

deck.
(3) Clean around the gear box.
(4) Remove the right hand bracket which mounts the gear

box to the mower deck.
(5) Remove the belt from the tension pulley. Slip the belt

over the top of the gear box.
(6) To install a new belt, reverse the above procedure.

NOTE:

Tighten bracket bolts securely. ●

6.5 ADJUSTING THE LIFT RODS

WARNING

To avoid serious injury or death:

Shut off the engine, set the parking brake, and ●
remove the key.

(1) Park the front mower and mower deck on level ground

and set the desired cutting height.
(2) Check whether the mower deck is level.
(3) If not, adjust the length of the lift rod so that the deck is

leveled.
(4) Tighten the lock nut securely.

(1) Tension pulley
(2) Belt

IMPORTANT:

To avoid the misalignment of the center spindle.

Before attaching the bolt, attach the right hand bracket ●
securely.

(3) Bracket (RH)
(4) Tension spring

(1) Lift rod
(2) Lock nut

6.6 FRONT GAUGE WHEEL

[TIRES]

WARNING

To avoid serious injury or death:

Never exceed the tire pressure shown below ●
(maximum limit) when attempting to seat a
bead. If beads have not been seated by the time

the pressure reaches maximum limit, deate

the assembly, reposition the tire on the rim,

relubricate,andreinate.Afterseatingthebead,
adjust ination pressure as recommended in
theinationpressurechart.

Maxinationpressure:3.8x105 Pa

(55 psi, 3.8 kgf/cm

WARNING

To avoid serious injury or death:

Donot attempttomountatireunlessqualied. ●
Use proper equipment.

2

)

The tire pressure is factory-set to the correct level, however,
tire pressure will drop slowly in the course of time. Check tire

pressure daily and inate as necessary.

14

6.7 ADJUSTING THE LIFT SPRINGS
(2WD)

In order to help improve traction, adjust the lift springs
according to the chart below.

RC48-F19 RC54-F19 RC60-F19

RH

A= — A=15 mm (0.6 in.) A=33 mm (1.3 in.)

LH

A=10 mm (0.4 in.) A=10 mm (0.4 in.) A=10 mm (0.4 in.)

6.8 TIGHTENING TORQUE CHART

Thread Size

d (mm)

M8 12 or 13

M10 14 or 17

M12 17 or 19

M14 19 or 22

NOTE:

Figure "7" on the top of the bolt indicates that the bolt is of special material. ●
Before tightening, check the gure on the top of bolt. ●

Hexa-Bolt

Head size

B (mm)

ft-lbs N-m kgf-m ft-lbs N-m kgf-m

13.0 to 15.2

(14.1 ± 1.1)

28.9 to 33.3

(31.1±2.2)

46.3 to 53.5

(49.9±3.6)

79.6 to 92.6

(86.1±6.5)

No mark 7T

17.8 to 20.6

(19.2±1.4)

39.3 to 45.1

(42.2±2.9)

62.8 to 72.6

(67.7±4.9)

107.9 to 125.5

(116.7±8.8)

1.9 to 2.1

(2.0±0.1)

4.0 to 4.6

(4.3±0.3)

6.4 to 7.4

(6.9±0.5)

11.0 to 12.8

(11.9±0.9)

17.5 to 20.3

(18.9±1.4)

35.4 to 41.2

(38.3±2.9)

57.1 to 66.5

(61.8±4.7)

91.1 to 108.5

(99.8±8.7)

23.5 to 27.5

(25.5±2.0)

48.1 to 55.9

(52.0±3.9)

77.6 to 90.2

(83.9±6.3)

123.6 to 147.0

(135.3±11.7)

2.4 to 2.8

(2.6±0.2)

4.9 to 5.7

(5.3±0.4)

8.0 to 9.2

(8.6±0.6)

12.6 to 15.0

(13.8±1.2)

7. TROUBLESHOOTING

Any service item refer to operator's manual for proper maintenance procedure.

Trouble Cause Remedy

Discharge chute plugged. Grass too wet.

Streaking of grass uncut. Ground speed too fast.

Uneven cut. Mower deck not level.

Blades scalping grass. Cutting height too low.

Belt slipping. Mower deck plugged.

Excessive vibration. Debris on mower deck or in pulleys.

Mower loads down tractor. Engine r.p.m. too low.

•

Grass too long.

•

Cutting too low.

•

Engine r.p.m. too low.

•

Ground speed too fast.

•

•

Engine r.p.m. too low.

•

Grass too long.

•

Blades dull or damaged.

•

Debris in mower deck.

•

•

Ground speed too fast.

•

Blades dull.

•

Blades worn.

•

Low tire ination.

•

Gauge wheels not adjusted correctly.

•

Gauge wheels pressure not adjusted

•

correctly.

•

Turning speed too fast.

•

Ridges in terrain.

•

Rough or uneven terrain.

•

Gauge wheels not adjusted correctly.

•

Bent blade(s).

•

•

Debris in pulleys.

•

Worn belt.

•

•

Damaged drive belt.

•

Damaged pulleys.

•

Pulleys out of alignment.

•

Blades out of balance.

•

•

Ground speed too fast.

•

Debris wrapped around mower

•

spindles.
Front of deck lower than rear.

•

Wait for grass to dry.

•

Raise cutting height and cut grass twice.

•

Raise cutting height.

•

Mow at full throttle.

•

Slow down.

•

Slow down.

•

Mow at full throttle, check and reset engine r.p.m..

•

Cut grass twice.

•

Replace blades or have blades sharpened.

•

Clean mower deck.

•

Level mower deck.

•

Slow down.

•

Have blades sharpened.

•

Replace blades.

•

Add air to correct.

•

Adjust gauge wheels.

•

Set both tire pressures to the correct pressure.

•

Raise cutting height.

•

Reduce speed on turns.

•

Change mowing pattern.

•

Adjust gauge wheels and antiscalp rollers.

•

Adjust gauge wheels and antiscalp rollers.

•

Replace blade(s).

•

Unplug and clean mower deck.

•

Clean pulleys.

•

Replace belt.

•

Clean mower deck and pulleys.

•

Replace drive belt.

•

Replace pulleys.

•

See your KUBOTA dealer.

•

Have blades balanced.

•

Mow at full throttle, check and reset engine r.p.m..

•

Slow down.

•

Clean mower.

•

Adjust deck per 6.5.

•

15