Kubota M5660SUHD Operators Manual

OPERATOR'S MANUAL

M5660SUHMODELS
M5660SUHD

PRINTED IN JAPAN

English (U.S.A.)
Code No. 3C111-9971-1

KUBOTA Corporation 2014

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READ AND SAVE THIS MANUAL

ABBREVIATION LIST

Abbreviations Definitions

2WD

4WD

API

ASABE

ASTM

DIN

DT

fpm

GST

Hi-Lo

HST

m/s

PTO

RH/LH

ROPS

rpm

r/s

2 Wheel Drive

4 Wheel Drive

American Petroleum Institute

American Society of Agricultural and Biological Engineers, USA

American Society for Testing and Materials, USA

Deutsches Institut für Normung, GERMANY

Dual Traction [4WD]

Feet Per Minute

Glide Shift Transmission

High Speed-Low Speed

Hydrostatic Transmission

Meters Per Second

Power Take Off

Right-hand and left-hand sides are determined by facing
in the direction of forward travel

Roll-Over Protective Structures

Revolutions Per Minute

Revolutions Per Second

KUBOTA Corporation is ···

Since its inception in 1890, KUBOTA Corporation has grown to
rank as one of the major firms in Japan.

To achieve this status, the company has through the years
diversified the range of its products and services to a remarkable
extent. Nineteen plants and 16,000 employees produce over
1,000 different items, large and small.

All these products and all the services which accompany them,
however, are unified by one central commitment. KUBOTA makes
products which, taken on a national scale, are basic necessities.
Products which are indispensable. Products which are intended to help
individuals and nations fulfill the potential inherent in their
environment. KUBOTA is the Basic Necessities Giant.

This potential includes water supply, food from the soil and from
the sea, industrial development, architecture and construction,
and transportation.

Thousands of people depend on KUBOTA's know-how, technology,
experience and customer service. You too can depend on
KUBOTA.

SAE

SMV

Society of Automotive Engineers, USA

Slow Moving Vehicle

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.

M5660SUH/M5660SUHD (U.S.A.)

AS . J . 1 - 1 . 4 . AK

UNIVERSAL SYMBOLS

As a guide to the operation of your tractor, various universal symbols have been utilized on the instruments and
controls. The symbols are shown below with an indication of their meaning.

Safety Alert Symbol

Diesel Fuel

Engine-Rotational Speed

Hourmeter/Elapsed
Operating Hours

Engine
Coolant-Temperature

Diesel Preheat/Glow
Plugs(Low Temperature
Start Aid)

Parking Brake

Engine Intake/Combustion
Air-Filter

Battery Charging Condition

Engine Oil-Pressure

Turn Signal

Electrical
Power-accessories

Position Control-Raised
Position

Position Control-Lowered
Position

Engine Warning

Emission Control

Draft Control-Shallow
Position

Draft Control-Deep Position

3-Point Lowering Speed
Control

Remote Cylinder-Retract

Remote Cylinder-Extend

Hazard Warning Lights

Headlight-Low Beam

Headlight-High Beam

4-Wheel Drive-On

Lock

Rear Window Defroster

Steering Wheel-Tilt Control

Empty

Full

PTO 540 rpm

PTO 1000 rpm

Regeneration

DPF INHIBIT (Switch)

Regeneration (Switch)

Parked Regeneration

Engine RPM Increase

Rev-limiter Control

Constant RPM Management

Engine-Run

Engine-Start

Engine-Stop

Power Take-Off Clutch
Control-Off (Disengaged)
Position

Power Take-Off Clutch
Control-On (Engaged) Position

Bi-Speed turn

Differential Lock

4-Wheel Drive-Off

Front-Wheel Drive-On

Fast

Slow

Creep

Windshield Wiper

Windshield Wiper
Intermittent

Windshield Washer

FOREWORD

You are now the proud owner of a KUBOTA Tractor. This tractor is a product of
KUBOTA quality engineering and manufacturing. It is made of fine materials and
under a rigid quality control system. It will give you long, satisfactory service. To
obtain the best use of your tractor, please read this manual carefully. It will help you
become familiar with the operation of the tractor and contains many helpful hints
about tractor 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
manufacture of products may cause some small parts of this manual to be
outdated. KUBOTA distributors and dealers will have the most up-to-date
information. Please do not hesitate to consult with them.

3

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.

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IMPORTANT :

NOTE :

DANGER :

WARNING :

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.

SAFETY FIRST

CONTENTS

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

SERVICING OF TRACTOR......................................................................................... 1

SPECIFICATIONS....................................................................................................... 3

SPECIFICATION TABLE ......................................................................................... 3

TRAVELING SPEEDS ............................................................................................. 5

IMPLEMENT LIMITATIONS ........................................................................................ 6

INSTRUMENT PANEL AND CONTROLS................................................................... 8

PRE-OPERATION CHECK ....................................................................................... 11

DAILY CHECK ....................................................................................................... 11

OPERATING THE ENGINE....................................................................................... 12

EXHAUST AFTERTREATMENT DEVICES........................................................... 12

Diesel Particulate Filter (DPF) Muffler ............................................................................ 12

Handling Points...............................................................................................................13

DPF Regeneration Process............................................................................................13

Regeneration Operating Procedure................................................................................14

PM Warning Level and Required Procedures ................................................................15

Regeneration Operating Procedure................................................................................16

PM Warning Level and Required Procedures ................................................................17

Tips on Diesel Particulate Filter (DPF) Regeneration..................................................... 19

STARTING THE ENGINE ...................................................................................... 19

COLD WEATHER STARTING ............................................................................... 22

Block Heater (if equipped) ..............................................................................................22

STOPPING THE ENGINE...................................................................................... 22

WARMING UP ....................................................................................................... 22

Warm-up and Transmission Oil at Low Temperature Range ......................................... 22

JUMP STARTING .................................................................................................. 23

OPERATING THE TRACTOR ................................................................................... 24

OPERATING NEW TRACTOR .............................................................................. 24

Do not Operate the Tractor at Full Speed for the First 50 Hours.................................... 24

Changing Lubricating Oil for New Tractors..................................................................... 24

BOARDING AND LEAVING THE TRACTOR ........................................................ 24

OPERATING FOLDABLE ROPS ........................................................................... 24

To Fold the ROPS ..........................................................................................................24

To Raise the ROPS to Upright Position.......................................................................... 25

Adjustment of Foldable ROPS........................................................................................ 26

STARTING ............................................................................................................. 26

Operator's Seat...............................................................................................................26

Seat Belt .........................................................................................................................27

Light Switch ....................................................................................................................27

Turn Signal / Hazard Light Switch ..................................................................................27

Brake Pedals (Right and Left).........................................................................................28

Clutch Pedal ...................................................................................................................29

Main Gear Shift Lever..................................................................................................... 30

CONTENTS

Range Gear Shift Lever..................................................................................................30

Hydraulic-Shuttle Shift Lever ..........................................................................................31

Front Wheel Drive Lever.................................................................................................31

Hand Throttle Lever........................................................................................................ 32

Foot Throttle ...................................................................................................................32

Parking Brake .................................................................................................................32

STOPPING............................................................................................................. 32

Stopping.......................................................................................................................... 32

CHECK DURING DRIVING ................................................................................... 32

Immediately Stop the Engine if:...................................................................................... 32

Easy Checker(TM)..........................................................................................................32

Fuel Gauge.....................................................................................................................33

Coolant Temperature Gauge.......................................................................................... 34

Tachometer.....................................................................................................................34

LCD MONITOR ...................................................................................................... 35

Changing Display Mode..................................................................................................35

PTO Speed Display Mode Switching.............................................................................. 37

ELECTRONIC ENGINE CONTROL....................................................................... 38

Constant RPM Management Control.............................................................................. 38

PARKING ............................................................................................................... 38

Parking............................................................................................................................ 38

OPERATING TECHNIQUES ................................................................................. 39

Differential Lock..............................................................................................................39

Operating the Tractor on a Road.................................................................................... 39

Operating on Slopes and Rough Terrain........................................................................ 40

Transport the Tractor Safely...........................................................................................40

Directions for Use of Power Steering..............................................................................40

Electrical Outlet...............................................................................................................40

PTO ........................................................................................................................... 41

PTO OPERATION.................................................................................................. 41

PTO Clutch Control Lever............................................................................................... 41

PTO Gear Shift Lever ..................................................................................................... 42

PTO Speed Limiter .........................................................................................................42

LCD Monitor Message ....................................................................................................43

PTO Shaft Cover and Shaft Cap ....................................................................................43

3-POINT HITCH & DRAWBAR.................................................................................. 44

3-POINT HITCH ..................................................................................................... 45

Category 1 & 2................................................................................................................ 45

Selecting the holes of Lower Links .................................................................................45

Selecting the Top Link Mounting Holes .......................................................................... 45

Drawbar ..........................................................................................................................45

Lifting Rod (Right)........................................................................................................... 46

Top Link..........................................................................................................................46

Telescopic Stabilizers..................................................................................................... 47

Telescopic Lower Links ..................................................................................................47

DRAWBAR............................................................................................................. 47

Swing Drawbar ...............................................................................................................47

HYDRAULIC UNIT..................................................................................................... 48

3-POINT HITCH CONTROL SYSTEM................................................................... 48

Position Control ..............................................................................................................48

CONTENTS

Float Control ...................................................................................................................48

3-point Hitch Lowering Speed.........................................................................................48

REMOTE HYDRAULIC CONTROL SYSTEM........................................................ 49

Remote Control Valve.....................................................................................................49

Remote Control Valve Lever...........................................................................................49

Remote Control Valve Coupler Connecting and Disconnecting ..................................... 50

Hydraulic Control Unit Use Reference Chart..................................................................51

TIRES, WHEELS AND BALLAST.............................................................................. 52

TIRES..................................................................................................................... 52

Inflation Pressure............................................................................................................52

Dual Tires ....................................................................................................................... 52

WHEEL ADJUSTMENT ......................................................................................... 52

Front Wheels (with 2-wheel drive) .................................................................................. 53

Front Wheels (with 4-wheel drive) .................................................................................. 54

Rear Wheels................................................................................................................... 56

BALLAST ............................................................................................................... 57

Front Ballast.................................................................................................................... 57

Rear Ballast ....................................................................................................................58

MAINTENANCE......................................................................................................... 59

SERVICE INTERVALS .......................................................................................... 59

LUBRICANTS, FUEL AND COOLANT .................................................................. 62

PERIODIC SERVICE................................................................................................. 64

HOW TO OPEN THE HOOD ................................................................................. 64

Hood ...............................................................................................................................64

DAILY CHECK ....................................................................................................... 64

Walk Around Inspection.................................................................................................. 64

Checking and Refueling..................................................................................................65

Checking Water Separator .............................................................................................65

Checking Engine Oil Level..............................................................................................66

Checking Transmission Fluid Level................................................................................66

Checking Coolant Level.................................................................................................. 67

Cleaning Evacuator Valve ..............................................................................................67

Cleaning Grill, Radiator Screen, Oil Cooler and Battery Mount...................................... 67

Checking DPF Muffler.....................................................................................................68

Checking Brake Pedal ....................................................................................................68

Checking Gauges, Meter and Easy Checker(TM) ..........................................................68

Checking Head Light, Turn Signal / Hazard Light etc..................................................... 68

Checking Seat Belt and ROPS....................................................................................... 68

Checking Movable Parts.................................................................................................68

EVERY 50 HOURS ................................................................................................ 68

Checking Engine Start System....................................................................................... 68

Checking Wheel Bolt Torque.......................................................................................... 69

Checking Tie-rod Dust Cover .........................................................................................70

EVERY 100 HOURS .............................................................................................. 70

Lubricating Grease Fittings............................................................................................. 70

Cleaning Air Cleaner Primary Element ...........................................................................71

Adjusting Fan Belt Tension............................................................................................. 72

Checking Fuel Line......................................................................................................... 72

Adjusting Brake Pedal ....................................................................................................73

Checking Battery Condition ............................................................................................73

CONTENTS

EVERY 200 HOURS .............................................................................................. 75

Checking Radiator Hose and Clamp ..............................................................................75

Checking Intake Air Line................................................................................................. 75

Checking Power Steering Line .......................................................................................76

Adjusting Toe-in.............................................................................................................. 76

Draining Fuel Tank Water............................................................................................... 77

EVERY 300 HOURS .............................................................................................. 77

Replacing Hydraulic Oil Filter .........................................................................................77

EVERY 400 HOURS .............................................................................................. 78

Changing Engine Oil....................................................................................................... 78

Replacing Engine Oil Filter .............................................................................................79

Replacing Fuel Filter....................................................................................................... 79

Cleaning Water Separator ..............................................................................................79

Lubricating Grease Fitting [2WD Model]......................................................................... 80

EVERY 600 HOURS .............................................................................................. 80

Changing Transmission Fluid ......................................................................................... 80

Changing Front Axle Gear Case Oil & Front Differential Case Oil ................................. 81

Adjusting Front Axle Pivot...............................................................................................82

EVERY 800 HOURS .............................................................................................. 82

Adjusting Engine Valve Clearance .................................................................................82

EVERY 1500 HOURS ............................................................................................ 82

Cleaning Fuel Injector Nozzle Tip................................................................................... 82

Replacing Oil Separator Element ...................................................................................82

Checking and Cleaning EGR Cooler .............................................................................. 82

EVERY 3000 HOURS ............................................................................................ 82

Checking Turbocharger .................................................................................................. 82

Checking Supply Pump ..................................................................................................82

Checking and Cleaning EGR System............................................................................. 82

Cleaning DPF Muffler .....................................................................................................83

EVERY 1 YEAR ..................................................................................................... 83

Replacing Air Cleaner Primary Element and Secondary Element.................................. 83

Checking Exhaust Manifold ............................................................................................ 83

Checking DPF Related Pipe ...........................................................................................83

Checking EGR Pipe........................................................................................................83

EVERY 2 YEARS................................................................................................... 83

Flushing Cooling System and Changing Coolant ........................................................... 83

Anti-Freeze .....................................................................................................................84

Replacing Radiator Hose (Water pipes) ......................................................................... 84

Replacing Power Steering Hose..................................................................................... 84

Replacing Fuel Hose ......................................................................................................84

Replacing Intake Air Line................................................................................................ 84

Replacing Oil Separator Related Rubber Pipe ............................................................... 84

Replacing PCV (Positive Crankcase Ventilation) Valve Hose........................................ 84

Replacing DPF Related Rubber Pipe .............................................................................84

Replacing EGR Cooler Rubber Pipe ..............................................................................84

Replacing Boost Sensor Hose........................................................................................ 85

SERVICE AS REQUIRED...................................................................................... 85

Bleeding Fuel System..................................................................................................... 85

Draining Clutch Housing Water ......................................................................................85

Replacing Fuse...............................................................................................................85

Replacing Slow-Blow Fuses ........................................................................................... 86

Replacing Light Bulb.......................................................................................................87

CONTENTS

Replacing Head Lamp ....................................................................................................87

STORAGE ................................................................................................................. 88

TRACTOR STORAGE ........................................................................................... 88

REMOVING THE TRACTOR FROM STORAGE................................................... 88

TROUBLESHOOTING............................................................................................... 89

ENGINE TROUBLESHOOTING ............................................................................ 89

POWER TRAIN TROUBLE SHOOTING................................................................ 90

OPTIONS................................................................................................................... 91

APPENDICES............................................................................................................ 92

INDEX .................................................................................................................... 92

SAFE OPERATION

-1SAFE OPERATION

Careful operation is your best insurance against an
accident.

Read and understand this manual carefully before
operating the tractor.

All operators, no matter how much experience they may
have, should read this and other related manuals before
operating the tractor or any implement attached to it. It is
the owner's obligation to instruct all operators in safe
operation.

1. BEFORE OPERATING THE TRACTOR

1. Know your equipment and its limitations. Read this
entire manual before attempting to start and operate
the tractor.

2. Pay special attention to the danger, warning and
caution labels on the tractor.

3. Do not operate the tractor or any implement attached
to it while under the influence of alcohol, medication,
controlled substances or while fatigued.

4. Before allowing other people to use your tractor,
explain how to operate and have them read this
manual before operation.

5. Never wear loose, torn, or bulky clothing around
tractor. It may catch on moving parts or controls,
leading to the risk of an accident. Use additional safety
items, e.g. hard hat, safety boots or shoes, eye and
hearing protection, gloves, etc., as appropriate or
required.

6. Do not allow passengers to ride on any part of the
tractor at anytime. The operator must remain in the
tractor seat during operation.

7. Check brakes, clutch, linkage pins and other
mechanical parts for improper adjustment and wear.
Replace worn or damaged parts promptly. Check the
tightness of all nuts and bolts regularly. (For further
details, see "MAINTENANCE" section.)

8. Keep your tractor clean. Dirt, grease, and trash build
up may contribute to fires and lead to personal injury.

9. Use only implements meeting the specifications listed
under "IMPLEMENT LIMITATIONS" in this manual or
implements approved by KUBOTA.

10.Use proper weights on the front or rear of the tractor to
reduce the risk of upsets. When using the front loader,
put an implement or ballast on the 3-point hitch to
improve stability. Follow the safe operating
procedures specified in the implement or attachment
manual.

11. The narrower the tread, the greater the risk of a tractor
upset. For maximum stability, adjust the wheels to the
widest practical tread width for your application. (See
"TIRES, WHEELS AND BALLAST" section.)

(1) Rear wheels (A) Tread Width

12.Do not modify the tractor. Unauthorized modification
may affect the function of the tractor, which may result
in personal injury.

C CAB, ROPS

1. KUBOTA recommends the use of a CAB or Roll Over
Protective Structures (ROPS) and seat belt in almost
all applications. This combination will reduce the risk
of serious injury or death, should the tractor be upset.
Check for overhead clearance which may interfere
with a CAB or ROPS.

2. Set parking brake and stop engine. Remove any
obstruction that may prevent raising or folding of the
ROPS. Do not allow any bystanders. Always perform
function from a stable position at the rear of the tractor.
Hold the top of the ROPS securely when raising or
folding. Make sure all pins are installed and locked.

3. If the CAB or ROPS is loosened or removed for any
reason, make sure that all parts are reinstalled
correctly before operating the tractor.

4. Never modify or repair any structural member of a
CAB or ROPS because welding, bending, drilling,
grinding, or cutting may weaken the structure.

5. If any structural member of the CAB or ROPS is
damaged, replace the entire structure at your local
KUBOTA Dealer.

6. If the tractor is equipped with a foldable ROPS it may
be temporarily folded down only when absolutely
necessary for areas with height constraints.
(There is no operator protection provided by the ROPS
in the folded position. For operator safety the ROPS
should be placed in the upright and locked position
and the seat belt fastened for all other operations.)

SAFE OPERATION-2

7. Always use the seat belt if the tractor has a CAB or
ROPS.
Do not use the seat belt if a foldable ROPS is down or
there is no ROPS. Check the seat belt regularly and
replace if frayed or damaged.

(1) ROPS
(2) Seat belt

2. OPERATING THE TRACTOR

5. Check before each use that operator presence
controls are functioning correctly. Test safety systems.
(See "Checking Engine Start System" in "EVERY 50
HOURS" in "PERIODIC SERVICE" section.)
Do not operate unless they are functioning correctly.

C Working

1. Pull only from the drawbar. Never hitch to axle housing
or any other point except drawbar; such arrangements
will increase the risk of serious personal injury or death
due to a tractor upset.

Operator safety is a priority. Safe operation, specifically
with respect to overturning hazards, entails understanding
the equipment and environmental conditions at the time of
use. Some prohibited uses which can affect overturning
hazards include traveling and turning with implements
and loads carried too high etc. This manual sets forth
some of the obvious risks, but the list is not, and cannot
be, exhaustive. It is the operator's responsibility to be alert
for any equipment or environmental condition that could
compromise safe operation.

C Starting

1. Always sit in the operator's seat when starting engine
or operating levers or controls. Adjust seat per
instructions in the operating the tractor section. Never
start engine while standing on the ground.

2. Before starting the engine, make sure that all levers
(including auxiliary control levers) are in their neutral
positions, that the parking brake is engaged, and that
both the clutch and the Power Take-Off (PTO) are
disengaged or "OFF".
Fasten the seat belt if the tractor has a CAB, a fixed
ROPS or a foldable ROPS in the upright and locked
position.

3. Do not start engine by shorting across starter
terminals or bypassing the safety start switch.
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.

(1) Drawbar

2. For trailing PTO-driven implements, set the drawbar to
the towing position.

3. Attach pulled or towed loads to the drawbar only.

4. Keep all shields and guards in place. Replace any that
are missing or damaged.

5. Avoid sudden starts. To avoid upsets, slow down
when turning, on uneven ground, and before stopping.

6. The tractor cannot turn with the differential locked and
attempting to do so could be dangerous.

7. Do not operate near ditches, holes, embankments, or
other ground surface features which may collapse
under the tractor's weight. The risk of tractor upset is
even higher when the ground is loose or wet. Tall
grass can hide obstacles, walk the area first to be sure.

8. Watch where you are going at all times. Watch for and
avoid obstacles. Be alert at row ends, near trees, and
other obstructions.

9. When working in groups, always let the others know
what you are going to do before you do it.

10.Never try to get on or off a moving tractor.

11.Always sit in the operator's seat when operating levers
or controls.

12.Do not stand between tractor and implement or trailed
vehicle unless parking brake is applied.

-3SAFE OPERATION

C Safety for children

Tragedy can occur if the operator is not alert to the
presence of children. Children generally are attracted to
machines and the work they do.

1. Never assume that children will remain where you last
saw them.

2. Keep children out of the work area and under the
watchful eye of another responsible adult.

3. Be alert and shut your machine down if children enter
the work area.

4. Never carry children on your machine. There is no safe
place for them to ride. They may fall off and be run
over or interfere with your control of the machine.

5. Never allow children to operate the machine even
under adult supervision.

6. Never allow children to play on the machine or on the
implement.

7. Use extra caution when backing up. Look behind and
down to make sure area is clear before moving.

C Operating on slopes

Slopes are a major factor related to loss-of-control and tip­over accidents, which can result in severe injury or death.
All slopes require extra caution.

1. To avoid upsets, always back up steep slopes. If you
cannot back up the slope or if you feel uneasy on it, do
not operate on it. Stay off slopes too steep for safe
operation.

2. Driving forward out of a ditch, mired condition or up a
steep slope increases the risk of a tractor to be upset
backward. Always back out of these situations. Extra
caution is required with 4-wheel drive models because
their increased traction can give the operator false
confidence in the tractor's ability to climb slopes.

3. Keep all movement on slopes slow and gradual. Do
not make sudden changes in speed, direction or apply
brake and make sudden motions of the steering
wheel.

4. Avoid disengaging the clutch or changing gears speed
when climbing or going down a slope. If on a slope
disengaging the clutch or changing gears to neutral
could cause loss of control.

5. Special attention should be made to the weight and
location of implements and loads as such will affect the
stability of the tractor.

6. To improve stability on slope, set widest wheel tread
as shown in "TIRES, WHEELS AND BALLAST"
section.
Follow recommendations for proper ballasting.

7. To avoid free wheeling:

A Do not shift the shuttle lever while on a slope.
A Stop completely by using the brake and by

depressing the clutch pedal, then shift the shuttle
lever.

A Start off after selecting shuttle direction, by

releasing the clutch pedal.

C Driving the tractor on the road

1. Lock the 2 brake pedals together to help assure
straight-line stops. Uneven braking at road speeds
could cause the tractor to tip over.

(1) Brake Pedal (LH)
(2) Brake Pedal (RH)
(3) Brake Pedal Lock

(A) Whenever travelling on the road

2. Check the front wheel engagement. The braking
characteristics are different between 2 and 4-wheel
drive. Be aware of the difference and use carefully.

3. Always slow the tractor down before turning. Turning
at high speed may tip the tractor over.

4. Make sure that the Slow Moving Vehicle (SMV) sign is
clean and visible. Use hazard lights and turn signals as
required.

(1) SMV emblem
(2) Bracket

5. On public roads use the SMV emblem and hazard
lights, if required by local traffic and safety regulations.

6. Observe all local traffic and safety regulations.

7. Turn the headlights on. Dim them when meeting
another vehicle.

8. Drive at speeds that allow you to maintain control at all
times.

9. Do not apply the differential lock while traveling at road
speeds. The tractor may run out of control.

SAFE OPERATION-4

10.Avoid sudden motions of the steering wheel as they
can lead to a dangerous loss of stability. The risk is
especially great when the tractor is traveling at road
speeds.

11.Keep the ROPS in the "UP" position and wear the seat
belt when driving the tractor on the road.
Otherwise, you will not be protected in the event of a
tractor roll-over.

12.Do not operate an implement while the tractor is on the
road. Lock the 3-point hitch in the raised position.

13.Do not ride or stand on the step during operation.
Riding or standing there could result in being crushed
under the rear tire due to slippage or the step
fracturing or displacing due to unintended loading.

(1) Step

14.When towing other equipment, use a safety chain and
place an SMV emblem on it as well.

15.Set the implement lowering speed knob in the "LOCK"
position to hold the implement in the raised position.

(1) 3-point hitch lowering speed knob (A) "FAST"

(B) "SLOW"
(C) "LOCK"

3. PARKING THE TRACTOR

1. Disengage the PTO, lower all implements to the
ground, place all control levers in their neutral
positions, set the parking brake, stop the engine,
remove the key from the ignition and lock the cab door
(if equipped). Leaving transmission in gear with the
engine stopped will not prevent tractor from rolling.

2. Make sure that the tractor has come to a complete
stop before dismounting.

3. Avoid parking on steep slopes, if at all possible park on
a firm and level surface; if not, park across a slope with
chock the wheels.
Failure to comply with this warning may allow the
tractor to move and could cause injury or death.

(1) Safety chain

-5SAFE OPERATION

4. OPERATING THE PTO

1. Wait until all moving components have completely
stopped before getting off the tractor, connecting,
disconnecting, adjusting, cleaning, or servicing any
PTO driven equipment.

2. Keep the PTO shaft cover in place at all times.
Replace the PTO shaft cap when the shaft is not in
use.

(1) PTO Shaft cover
(2) PTO Shaft cap

(A) "NORMAL POSITION"
(B) "RAISED POSITION"

5. USING 3-POINT HITCH

1. Use the 3-point hitch only with equipment designed for
3-point hitch usage.

2. When using a 3-point hitch mounted implement, be
sure to install the proper counterbalance weight on the
front of the tractor.

3. To avoid injury from separation:
Do not extend lift rod beyond the groove on the
threaded rod.

(1) Groove

3. Before installing or using PTO driven equipment, read
the manufacturer's manual and review the safety
labels attached to the equipment.
To prevent PTO driven equipment from improper or
unsafe use, select the lower speed (540rpm) unless
the higher one is specifically recommended as safe by
the equipment manufacture.

4. When operating stationary PTO driven equipment,
always apply the tractor parking brake and place
chocks behind and in front of the rear wheels. Stay
clear of all rotating parts. Never step over rotating
parts.

6. SERVICING THE TRACTOR

Before servicing the tractor, park it on a firm, flat and level
surface, set the parking brake, lower all implements to the
ground, place the gear shift lever in neutral, stop the
engine and remove the key.

1. Allow the tractor time to cool off before working on or
near the engine, muffler, radiator, etc.

2. Do not remove radiator cap while coolant is hot. When
cool, slowly rotate cap to the first stop and allow
sufficient time for excess pressure to escape before
removing the cap completely. If the tractor has a
coolant recovery tank, add coolant or water to the tank,
not the radiator. (See "Checking Coolant Level" in
"DAILY CHECK" in "PERIODIC SERVICE" section.)

3. Always stop the engine before refueling. Avoid spills
and overfilling.

4. Do not smoke when working around battery or when
refueling. Keep all sparks and flames away from
battery and fuel tank. The battery presents an
explosive hazard, because it gives off hydrogen and
oxygen especially when recharging.

5. Before "jump starting" a dead battery, read and follow
all of the instructions. (See "JUMP STARTING" in
"OPERATING THE ENGINE" section.)

6. Keep first aid kit and fire extinguisher handy at all
times.

SAFE OPERATION-6

7. Disconnect the battery's ground cable before working
on or near electric components.

8. To avoid the possibility of battery explosion, do not use
or charge the refillable type battery if the fluid level is
below the LOWER ( lower limit level ) mark. Check the
fluid level regularly and add distilled water as required
so that the fluid level is between the UPPER and
LOWER levels.

9. To avoid sparks from an accidental short circuit,
always disconnect the battery's ground cable (-) first
and reconnect it last.

(1) Battery

10.Do not attempt to mount a tire on a rim. This should be
done by a qualified person with the proper equipment.

11.Always maintain the correct tire pressure. Do not
inflate tires above the recommended pressure shown
in the operator's manual.

15.Escaping hydraulic fluid under pressure has sufficient
force to penetrate skin, causing serious personal
injury. Before disconnecting hydraulic lines, be sure to
release all residual pressure. Before applying
pressure to the hydraulic system, make sure that all
connections are tight and that all lines, pipes, and
hoses are free of damage.

16.Fluid escaping from pinholes may be invisible. Do not
use hands to search for suspected leaks; use a piece
of cardboard or wood. Use of safety goggles or other
eye protection is also highly recommended. If injured
by escaping fluid, see a medical doctor at once. This
fluid will produce gangrene or severe allergic reaction.

12.Securely support the tractor when either changing
wheels or adjusting the wheel tread width.

13.Make sure that wheel bolts have been tightened to the
specified torque.

14.Do not work under any hydraulically supported
devices. They can settle, suddenly leak down, or be
accidentally lowered. If it is necessary to work under
tractor or any machine elements for servicing or
adjustment, securely support them with stands or
suitable blocking beforehand.

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

17.Do not open high-pressure fuel system.
High-pressure fluid remaining in fuel lines can cause
serious injury. Do not disconnect nor attempt to repair
fuel lines, sensors, or any other components between
the high-pressure fuel pump and injectors on engines
with high pressure common rail fuel system.

18.To avoid hazardous high voltage, turn the key switch
to the OFF position if it is necessary to check to repair
the computer, harness or connectors.

19.During Diesel Particulate Filter (hereinafter called
DPF) regenerating operations, exhaust gases and
exhaust filter components reach temperatures hot
enough to burn people, or ignite or melt common
materials.

20.Keep the tractor away from people, animals or
structures which may be susceptible to harm or
damage from hot exhaust gases.

21.To prevent fires, keep the DPF muffler and its
surroundings clear of anything flammable and keep
clean at all times.

22.During regeneration, white exhaust gas may be
visible. Do not allow regeneration in a non-ventilated
space.

23.During regeneration, do not leave the tractor.

-7SAFE OPERATION

SAFE OPERATION-8

7. DANGER, WARNING AND CAUTION LABELS

-9SAFE OPERATION

SAFE OPERATION-10

-11SAFE OPERATION

8. CARE OF DANGER, WARNING AND CAUTION LABELS

1. Keep danger, warning and caution labels clean and free from obstructing material.

2. Clean danger, warning and caution labels with soap and water, dry with a soft cloth.

3. Replace damaged or missing danger, warning and caution labels with new labels from your local KUBOTA Dealer.

4. If a component with danger, warning and caution label(s) affixed is replaced with new part, make sure new label(s) is
(are) attached in the same location(s) as the replaced component.

5. Mount new danger, warning and caution labels by applying on a clean dry surface and pressing any bubbles to outside
edge.

SERVICING OF TRACTOR

Your dealer is interested in your new tractor and has the
desire to help you get the most value from it. After reading
this manual thoroughly, you will find that you can do some
of the regular maintenance yourself.
However, when in need of parts or major service, be sure
to see your KUBOTA Dealer.
For service, contact the KUBOTA Dealership from which
you purchased your tractor or your local KUBOTA Dealer.
When in need of parts, be prepared to give your dealer the
tractor, CAB/ROPS and engine serial numbers.
Locate the serial numbers now and record them in the
space provided.

Type Serial No.

1SERVICING OF TRACTOR

Tractor

CAB / ROPS

Engine

Date of Purchase

Name of Dealer

(To be filled in by purchaser)

C Warranty

This tractor is warranted under the KUBOTA Limited
Express Warranty, a copy of which may be obtained from
your selling dealer. No warranty shall, however, apply if
the tractor has not been handled according to the
instruction given in the Operator's Manual even it is within
the warranty period.

C Scrapping the tractor and its procedure

To put the tractor out of service, correctly follow the local
rules and regulations of the country or territory where you
scrap it. If you have questions, consult your local
KUBOTA Dealer.

(1) Tractor identification plate

(1) Tractor serial number

(1) Engine serial number

SERVICING OF TRACTOR2

(1) ROPS identification plate (ROPS Serial No.)

(1) Diesel Particulate Filter (DPF) serial number

SPECIFICATIONS

SPECIFICATION TABLE

3SPECIFICATIONS

Engine

Model

Model V2403-CR-TE4

Type 4 cylinder in-line, Common Rail System, direct Injection

Total displacement cm (cu.in.) 2434 (148.5)

Bore and stroke mm (in.) 87 x 102.4 (3.4 x 4)

Rated revolution rpm 2600

Low idling revolution rpm 950 to 1000

Rated Engine HP
(97/68/EC)

Net power *1
(SAE J1349)

PTO power *1
(at rated engine
RPM)

Maximum torque

Battery capacity 12V, RC: 133 min, CCA 582A

Fuel tank capacity L (U.S.gals.) 67 (17.7)

kW (HP) 43.2 (57.9) @ 2600

kW (HP) 41.8 (56) @ 2600

kW (HP) 37.3 (50)

N-m (ft-lbs) /

rpm

2WD 4WD

193.6 (142.8) / 1500 to 1700

M5660SU

Engine oil capacity L (U.S.qts.) 7.2 (7.6)

Coolant capacity L (U.S.qts.) 8 (8.5)

Overall length mm (in.) 3525 (138.7) 3455 (136)

Overall width
(minimum tread)

Overall height mm (in.) 2420 (95.3)

Wheel base mm (in.) 2085 (82) 2050 (81)

Dimensions

Front mm (in.)

Tread

Rear mm (in.)

Minimum ground
clearance

Weight kg (lbs.) 1900 (4189) 1990 (4387)

mm (in.) 1860 (73.2)

1420, 1520
(55.9, 59.8)

1320 to 1720
(52.0 to 67.7)

mm (in.) 415 (16.3)

1300, 1400
(51.2, 55.1)

4 SPECIFICATIONS

Traveling
system

Hydraulic
unit

Model

Standard
tire size

Clutch Multiple wet disc

Steering Hydraulic Power Steering

Braking system Multiple wet disks mechanical

Differential Bevel gears with differential lock (Rear)

Hydraulic control system Position control

Pump capacity

3-point hitch Category 1 and 2

Max.
lifting
force

Remote hydraulic control 1 standard (2nd & 3rd valve optional)

Front tires 6.5-16 8.3-24

Rear tires 14.9-28 *2

L (U.S.gals.)

/ min

At lifting
points

24 in.
behind
lifting
point

kg (lbs.)

kg (lbs.) 1500 (3307)

2WD 4WD

At lower link end with links horizontal

M5660SU

40.2 (10.6)

1900 (4189)

System pressure

Traction system Swinging drawbar, adjustable in direction

Live PTO

PTO

The company reserves the right to change the specifications without notice.
NOTE: *1 Manufacturer's estimate

(Indepen­dent)

*2 Cast iron disks available for wheels.

Direction of turning Clockwise, viewed from tractor rear

PTO/
Engine
speed

MPa

(kgf/cm )

rpm 6 spline: 540 / 2295

19.1 (195)

TRAVELING SPEEDS

Model M5660SU

Tire size (Rear) 14.9-28

5SPECIFICATIONS

(At rated engine rpm)

Shuttle

shift lever

Range gear

shift lever

Main gear

shift lever

1 2.6 1.6

2 3.6 2.2

3 5.1 3.1

4 7.7 4.8

1 9.7 6.1

2 13.7 8.5

3 19.2 12.0

4 29.3 18.2

1 2.6 1.6

2 3.7 2.3

3 5.2 3.2

4 7.8 4.9

1 9.9 6.2

2 14.0 8.7

3 19.6 12.2

km/h mph

4 29.9 18.6

The company reserves the right to change the specifications without notice.

6 IMPLEMENT LIMITATIONS

IMPLEMENT LIMITATIONS

The KUBOTA Tractor has been thoroughly tested for proper performance with implements sold or approved by KUBOTA.
Use with implements which are not sold or approved by KUBOTA and which exceed the maximum specifications listed
below, or which are otherwise unfit for use with the KUBOTA Tractor may result in malfunctions or failures of the tractor,
damage to other property and injury to the operator or others. [Any malfunctions or failures of the tractor resulting from use
with improper implements are not covered by the warranty.]

Tread (max. width) with farm tires

Front

Rear

2WD 4WD

Lower link end max.

lifting capacity: W 0

M5660SU

M5660SU

Lower link end max, hydraulic lifting capacity.......................................W 0

Implement weight.............................................The implement's weight which can be put on the lower link: W 1

Max. drawbar load............................................W 2

Trailer loading weight.......................................The max. loading weight for trailer (without trailer's weight): W 3

A Implement size may vary depending on soil operating conditions.
A Strictly follow the instructions outlined in the operator’s manual of the mounted or trailed machinery or trailer, and do

not operate the combination tractor - machine or tractor - trailer unless all instructions have been followed

A Forestry Application

Following hazards exist;
(a) toppling trees, primarily in case a rear-mounted tree grab-crane is mounted at the rear of the tractor;
(b) penetrating objects in the operator’s enclosure, primarily in case a winch is mounted at the rear of the tractor.
Optional equipments such as OPS (Operator Protective Structure), FOPS (Falling Object Protective Structure), etc. to
deal with these hazards and other related hazards are not available for this tractor. Without such optional equipment
use is limited to tractor specific applications like transport and stationary work.

(Shown on the next page)

1820 mm

(71.7 in.)

Implement weight: W 1

and / or size

As in the following list

Max. Drawbar Load: W 2

1430 mm

(56.3 in.)

1000 kg

(2200 lbs.)

1720 mm

(67.7 in.)

Trailer loading weight: W 3 Max. capacity

2WD 4WD

4000 kg

(8800 lbs.)

1900 kg

(4190 lbs.)

4500 kg

(9900 lbs.)

7IMPLEMENT LIMITATIONS

No. Implement Remarks

1Slurry Tank

2Trailer

Rotary Cutter

3Mower

4 Sprayer

5 Rotary Tiller

6 Moldboard Plow

7 Disk harrow

8 Disc Plow

9 Sub Soiler

10 Cultivator

11 Front Blade *1, *2

12 Rear Blade

13 Front Loader *1, *2

14 Box Blade

15 Back Hoe *2

16 Snow Blade

Flail Mower
(Heavy)

Sickle Bar Max. Cutting Width mm (in.) 2130 (84)

3P Type

Drawbar Type Max. Harrowing Width mm (in.) 2450 (96) 2750 (108)

Max. Tank Capacity L (gals.) 3000 (790)

Max. Load Capacity kg (lbs.) 4000 (8800)

Max. Load Capacity kg (lbs.) 4000 (8800) 4500 (9900)

Max. Drawbar Load kg (lbs.) 1000 (2200)

Max. Cutting Width mm (in.) 2130 (84)

Max. Weight kg (lbs.) 540 (1200)

Max. Cutting Width mm (in.) 3050 (120)

Max. Weight kg (lbs.) 800 (1760)

Max.Tank
Capacity

Max. Tilling Width mm (in.) 2130 (84)

Max. Weight kg (lbs.) 800 (1760)

Max. Size

Max. Weight kg (lbs.) 3P Type 450 (1000)

Max. Size 18 in. x 24

Max. Harrowing Width mm (in.) 2130 (84)

Max. Weight kg (lbs.) 450 (1000)

Max. Size

Max. Weight kg (lbs.) 450 (1000)

Numbers of Cultivating Tines 2

Cultivating Depth mm (in.) 300 (12) 400 (16)

Max. Width mm (in.) 3050 (120) 3660 (144)

Number of Rows 4

Max. Weight kg (lbs.) 450 (1000)

Max. Cutting Width mm (in.) 1820 (72)

Max. Oil Pressure MPa (psi.) 19.6 (2842)

Max. Cutting Width mm (in.) 1820 (72)

Max. Oil Pressure MPa (psi.) 19.6 (2842)

Max. Lifting Capacity kg (lbs.) 1150 (2535)

Max. Oil Pressure
(Bucket Pivot Pin, Max.
Height)

Max. Cutting Width mm (in.) 1820 (72)

Max. Weight kg (lbs.) 450 (1000)

Max. Digging Depth mm (in.) 2530 (100)

Max. Weight kg (lbs.) 900 (2000)

Max. Width mm (in.) 1820 (72)

Max. Weight kg (lbs.) 450 (1000)

Mid L (gals.) 680 (180)

Rear 3P L (gals.) 680 (180)

Drawbar L (gals.) 3000 (800) 3500 (920)

M5660SU

2WD 4WD

16 in. x 2
18 in. x 1

24 in. x 3
26 in. x 2

MPa (psi.) 19.6 (2842)

14 in. x 3
16 in. x 2
18 in. x 1

A Implement size may vary depending on soil operating conditions.
*1 Must remove front weight with this implement.
*2 Need subframe

8 INSTRUMENT PANEL AND CONTROLS

INSTRUMENT PANEL AND CONTROLS

B Instrument Panel, Switches and Hand Controls

ILLUSTRATED CONTENTS

(1) Constant RPM management switch ................. 38

(2) Hydraulic-shuttle shift lever .............................. 31

(3) Turn signal light switch ..................................... 27

(4) Head light switch .............................................. 27

(5) Clutch pedal ..................................................... 29

(6) Parking brake lever .......................................... 19,38

(7) Easy Checker(TM) ........................................... 32

(8) Parked regeneration switch .............................. 12

(9) DPF INHIBIT switch ......................................... 12

(10) Hazard light switch ......................................... 27

(11) Hand throttle lever .......................................... 32

(12) Key switch ...................................................... -

(13) Foot throttle .................................................... 32

(14) Brake pedal .................................................... 28

9INSTRUMENT PANEL AND CONTROLS

ILLUSTRATED CONTENTS ILLUSTRATED CONTENTS

(1) Hazard / Turn signal indicator ............................ 27 (11) Fuel level indicator ......................................... 32

(2) Master system warning indicator ........................ 32 (12) Engine warning indicator ................................ 32

(3) PTO clutch indicator .......................................... 41 (13) Regeneration indicator ................................... 12

(4) Liquid crystal display.......................................... 35 (14) Parked regeneration indicator ........................ 12

(5) Electrical charge warning indicator .................... 32 (15) Engine RPM increase indicator ...................... 12

(6) Engine oil pressure warning indicator ................ 32 (16) Rev-limiter indicator ....................................... 42

(7) Parking brake warning indicator ......................... 19 (17) Emission indicator .......................................... 32

(8) Tachometer ....................................................... 34 (18) Heater indicator ............................................. 22

(9) Fuel gauge ......................................................... 33 (19) PTO / Hour meter select switch ...................... 35

(10) Coolant temperature gauge ............................. 34 (20) Select switch .................................................. 35

10 INSTRUMENT PANEL AND CONTROLS

B Foot and Hand Controls

ILLUSTRATED CONTENTS

(1) Main gear shift lever .................................. 30

(2) Range gear shift lever ............................... 30

(3) Differential lock pedal ................................ 39

(4) 3-Point hitch lowering speed knob ............. 48

(5) Front wheel drive lever .............................. 31

(6) Tool box .................................................... -

(7) Operator's seat ......................................... 26

(8) Remote control valve lever ........................ 49

(9) PTO clutch control lever ............................ 41

(10) Position control lever ............................... 48

(11) Cup holder .............................................. -

(12) Seat belt .................................................. 27

(13) Remote control valve coupler .................. 49

(14) Electrical outlet ........................................ 40

PRE-OPERATION CHECK

DAILY CHECK

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

To avoid personal injury or death:
A Be sure to check and service the tractor on a

level surface with the engine shut off and the
parking brake "ON" and implement lowered to
the ground.

Check item

- Walk around inspection

- Check engine oil level

- Check transmission oil level

- Check coolant level

- Check water separator

- Clean grill and radiator screen

- Clean oil cooler

- Clean fuel cooler

- Check DPF muffler

- Check air cleaner evacuator valve

(When used in a dusty place)

- Check air cleaner dust indicator
(When used in a dusty place)

- Check brake pedal

- Check indicators, gauges and meter

- Check lights

- Check seat belt and ROPS

- Check movable parts

- Refuel
(See "DAILY CHECK" in "PERIODIC SERVICE"
section.)

- Care of danger, warning and caution labels
(See "DANGER, WARNING AND CAUTION LABELS"

in "SAFE OPERATION" section.)

11PRE-OPERATION CHECK

12 OPERATING THE ENGINE

OPERATING THE ENGINE

EXHAUST AFTERTREATMENT DEVICES

To avoid personal injury or death:
A Read "Safe Operation" in the front of this

manual.

A Read the danger, warning and caution labels

located on the tractor.

A To avoid the danger of exhaust fume

poisoning, do not operate the engine in a
closed building without proper ventilation.

A Never start engine while standing on ground.

Start engine only from operator's seat.

A Make it a rule to set all shift levers to the

"NEUTRAL" positions and to place PTO clutch
control switch in "OFF" position before starting
the engine.

To avoid personal injury or death:
A During Diesel Particulate Filter (DPF)

regenerating operations, exhaust gases and
exhaust filter components reach temperatures
hot enough to burn people, or ignite or melt
common materials.

A Keep tractor away from people, animals or

structures which may be susceptible to harm
or damage from hot exhaust gases.

A During regeneration, white exhaust gases may

be visible. Do not allow regeneration in a non
ventilated garage or confined area.

A During regeneration, do not leave the tractor.

A Do not use starting fluid or ether.
A To protect the battery and the starter, make sure that

the starter is not continuously turned for more than 10
seconds.

BDiesel Particulate Filter (DPF) Muffler

This tractor is equipped with an engine with a DPF (Diesel
Particulate Filter) muffler which serves to reduce
hydrocarbons, carbon monoxide and other toxic gases, all
of which are contained in diesel engine emissions, to
harmless carbon dioxide and water. The DPF also traps
PM (particulate matter).
Please handle exhaust aftertreatment devices correctly
and in an environmentally responsible manner.

(1) Diesel Particulate Filter (DPF)

BHandling Points

When a specific amount of PM (particulate matter) has
accumulated in the DPF muffler, it is necessary to refresh
the DPF muffler by burning the PM inside it. This burning
off work is called "Regeneration".
To extend operating time to reach this regeneration, and
to avoid DPF muffler trouble, make sure to observe the
following handling matters.

C Fuel

Be sure to use Ultra Low Sulfur Fuel (S15).

A Use of diesel fuel other than Ultra Low Sulfur Fuel

may adversely affect the engine and DPF
performance.
Use of fuels other than Ultra Low Sulfur Fuel (S15)
may not meet regulations for your region.

C Engine oil

Use DPF-compatible oil (CJ-4) for the engine.

A If any engine oil other than CJ-4 is used, the DPF

may become clogged earlier than expected and the
fuel economy may drop.

C Prohibition of unnecessary idling operation

Generally, the lower the engine speed, the lower the
exhaust gas temperature is, so the PM contained in
exhaust gas will not be burnt, and begins to accumulate.
Therefore, don't idle unnecessarily.

C Regeneration

When there is "Regeneration" instruction sign by lamp or
buzzer, immediately perform the required procedure for
regeneration.

13OPERATING THE ENGINE

BDPF Regeneration Process

DPF regeneration process can be performed by choosing
from "Auto Regeneration" or "Regeneration inhibit" mode
according to your job conditions. For jobs not affected by
hot gases emitted during regeneration, the "Auto
Regeneration" is advisable.

C Auto Regeneration Mode;

When starting the engine (switch operation is
unnecessary), the "Auto Regeneration" mode is
automatically activated.
With the auto regeneration mode on, when a specific
amount of PM has accumulated, and the regeneration
conditions are satisfied (See the "Tips on Diesel
Particulate Filter [DPF] Regeneration"), the DPF will be
automatically regenerated whether the tractor is in
motion or parked.
By this way, work efficiency is improved. For details of
auto regeneration, refer to "Operating Procedure for
Auto Regeneration Mode" section.

C Regeneration Inhibit Mode;

After starting the engine, if the "DPF INHIBIT switch" is
pressed to turn on the switch lamp, the "Regeneration
inhibit" mode will be activated.
With "Regeneration Inhibit" mode on, the PM which has
accumulated inside the DPF will not be burnt, unless the
operator performs the regeneration work manually.
The "Regeneration Inhibit" mode is effective for work in
poorly ventilated work spaces.
For details of regeneration prohibition, refer to
"Operating Procedure for Regeneration Inhibit Mode"
section.

A If stop the engine once, the "Auto Regeneration" mode

will be activated.

A Interrupting the regeneration cycle or continued

operation by ignoring the warning signs may cause
DPF and engine damage.

14 OPERATING THE ENGINE

Operating Procedure for Auto Regeneration Mode

(1) Parked regeneration switch
(2) DPF INHIBIT switch

(3) Regeneration indicator
(4) Parked regeneration indicator

(5) Engine RPM increase indicator
(6) Engine warning indicator

BRegeneration Operating Procedure

Start the engine.

1.

(Make sure that the DPF INHIBIT switch lamp is "OFF".)

Switch lamp OFF: Auto Regeneration Mode activated.
Switch lamp ON: Regeneration Inhibit Mode activated.

A When the engine is started, the "Auto Regeneration" mode is automatically activated.
A "Regeneration Inhibit" mode is activated, when the DPF INHIBIT switch is pushed after the engine is started.

When the regeneration indicator starts flashing:

2.

A specific amount of PM has built up in the DPF.
Continue to operate the tractor, and the regeneration process will begin automatically, make sure the working place
is in a safe area as DPF and exhaust temperature will rise.

When the engine rpm increase indicator starts flashing:

3.

Keep on working and increase the engine rpm until the indicator turns "OFF".

A Even if the Auto Regeneration Mode is selected, DPF regeneration may not begin because system requirements have

not been satisfied.

A The engine rpm increase indicator is used as a guide to satisfy the regeneration conditions. If the engine load is too

heavy, the engine rpm increase indicator may continue to flash, even though regeneration system conditions are
satisfied and regeneration may begin automatically. (See the "Tips on Diesel Particulate Filter [DPF] Regeneration")

15OPERATING THE ENGINE

BPM Warning Level and Required Procedures

During Auto Regeneration Mode when the PM level has built up in the DPF, the regeneration cycle will begin automatically.
If the regeneration cycle is interrupted or the regeneration conditions are not satisfied, the buzzer starts sounding and the
indicator display changes in response to the PM level in order to prompt the operator to perform the required procedure
listed below.

A Once the regeneration level has been reached, immediately perform the required procedure for regeneration.

Interrupting the regeneration cycle or continued operation by ignoring the warning signs may cause DPF and engine
damage.

Auto Mode

DPF system status Required procedure

PM warning level:

Buzzer: Not sounding

1

The regeneration indicator starts
flashing.

A specific amount of PM has accumulated
in the DPF muffler.
Continue to work the tractor to raise the
DPF temperature.

PM warning level:

Buzzer: Sounding every
5 seconds

PM warning level:

Buzzer: Sounding every
3 seconds

PM warning level:

Buzzer: Sounding every
1 second
Engine output: 50%

2-1

2-2

3

The RPM increase indicator starts
flashing.

The regeneration indicator will stop
flashing and remain "ON" constantly.

If the regeneration cycle was interrupted or conditions are not satisfied for regeneration then
DPF system is now in Level 2.

The regeneration indicator starts
flashing.

The RPM increase indicator starts
flashing.

The parked regeneration indicator starts
flashing.

If the regeneration fails in the warning level 2:

The engine warning indicator starts
flashing.

The parked regeneration indicator starts
flashing.

Continue the work and increase the engine
rpm until the indicator turns "OFF".

The regeneration cycle begins and
continues until cycle is complete then the
indicator will turn "OFF".

Start the regeneration, referring to PM
warning level: 1 above.
Now the parked regeneration indicator
starts flashing, and the parked
regeneration can also be started.
If the regeneration conditions are not met,
perform the parked regeneration.
A For the procedure, refer to "Operating

Procedure for Parked Regeneration".

Immediately discontinue working the
tractor and begin the parked regeneration
cycle process.
A For the procedure, refer to "Operating

Procedure for Parked Regeneration".
At this PM warning level, the Auto
Regeneration Mode does not function.
If the tractor is operated further, the
regeneration cycle will be disabled.

PM warning level:

Buzzer: Sounding every
1 second
Engine output: 50%

4

If the parked regeneration is interrupted or the tractor is continuously operated in the warning
level 3:

The engine warning indicator remains
constantly "ON".

Immediately move the tractor to a safe
place and park it there and turn the engine
"OFF".
Contact your local KUBOTA Dealer.
A At this level, never continue to operate

the tractor otherwise damage will result

to the DPF and engine.

16 OPERATING THE ENGINE

Operating Procedure for Regeneration Inhibit Mode

(1) Parked regeneration switch
(2) DPF INHIBIT switch

(3) Regeneration indicator
(4) Parked regeneration indicator

(5) Engine RPM increase indicator
(6) Engine warning indicator

BRegeneration Operating Procedure

Start the engine.

1.

Press the DPF INHIBIT switch , and the switch lamp illuminates.

2.

Switch lamp ON: Regeneration Inhibit Mode selected.
Switch lamp OFF: Auto Regeneration Mode selected.

When the parked regeneration indicator starts flashing:

3.

A specific amount of PM has accumulated in the DPF muffler.
Move the tractor to a safe place and activates the DPF muffler. Follow the "Operating Procedure for Parked
Regeneration" procedure.

17OPERATING THE ENGINE

BPM Warning Level and Required Procedures

In the Regeneration Inhibit Mode, the buzzer starts sounding and the indicator display changes in response to the PM level
in order to prompt the operator to perform the required procedure listed below.

A Once the regeneration level has been reached, immediately perform the required procedure for regeneration.

Interrupting the regeneration cycle or continued operation by ignoring the warning signs may cause DPF and engine
damage.

Regeneration Inhibit Mode

DPF system status Required procedure

PM warning level:

Buzzer: Not sounding

PM warning level:

Buzzer: Sounding every
5 seconds

PM warning level:

Buzzer: Sounding every
3 seconds

PM warning level:

Buzzer: Sounding every
1 second
Engine output: 50%

1

2-1

2-2

3

The regeneration indicator starts
flashing.

At PM warning levels range from 1 to 2-2, it is also possible to change DPF INHIBIT
switch to auto regeneration mode then perform regeneration.

The regeneration indicator starts
flashing.

The Parked regeneration indicator
starts flashing.

If the parked regeneration cycle is interrupted or the tractor is continuously operated in the PM
warning level 2:

The engine warning indicator starts
flashing.

The parked regeneration indicator starts
flashing

A specific level of PM has built up in the
DPF muffler.
Continue with the operation as it is.

Move the tractor to a safe area, then follow
the "Operating Procedure for Parked
Regeneration".

Immediately stop working the tractor, move
the tractor to a safe area, then follow the
"Operating Procedure for Parked
Regeneration".
If the tractor is operated further and the
operator ignores the warning signs, then
regeneration will be disabled.

PM warning level:

Buzzer: Sounding every
1 second
Engine output: 50%

4

If the regeneration cycle is interrupted or the tractor is continuously operated ignoring the
warning signs, in the PM warning level 3:

The engine warning indicator remains
constantly "ON".

Immediately move the tractor to a safe
place and place in park, turn "OFF" engine.
Contact your local KUBOTA Dealer.
A At this level never continue to operate

the tractor, otherwise damage may
result to the DPF and engine.

18 OPERATING THE ENGINE

Operating Procedure for Parked Regeneration

Park the tractor in a safe area away from buildings, people, and animals.

1.

Apply the parking brake.

2.

Set the shuttle shift lever to the neutral position.

3.

Set the PTO clutch control lever to the "OFF" position.

4.

Return the engine rpm to the idle speed.

5.

Lower the implement to the ground.

6.

Press the DPF INHIBIT switch , and the switch lamp turns "OFF".

7.

When the regeneration conditions are satisfied (2 to 5 and 7 mentioned above),

8.

the parked regeneration switch lamp start flashing.

Press the parked regeneration switch to start the regeneration cycle.

9.

(The switch lamp will stop flashing and remain "ON" constantly during the cycle.)

The engine rpm will automatically rise, and the regeneration process will begin.

10.

Both indicators stay "ON" while regenerating the DPF.

11.

They turn "OFF" when the cycle is complete.

After the lamp turns "OFF", normal tractor work may resume.

12.

When driving in "Regeneration Inhibit" mode, press the DPF INHIBIT switch to turn on the switch lamp.

A During the regeneration cycle, do not touch the above levers, and switches (in steps 2, 3, 4), nor change the engine

rpm other than an emergency stop. Otherwise, the regeneration will be interrupted.

A Never leave the tractor when parked regeneration process is activated.
A If the parked regeneration cycle is interrupted, the engine rpm is fixed at the idling level for about 30 seconds. For this

period, keep the hand throttle lever and foot throttle pedal at the idle position. Do not move them. They will function
again in 30 seconds.

19OPERATING THE ENGINE

BTips on Diesel Particulate Filter (DPF)

Regeneration

A Operation

The higher in speed or load the engine operates, the
higher the exhaust temperature rises. As a result,
particulate matter (PM) inside the DPF is consumed,
therefore the regeneration process is required less
frequently over time.
The lower in speed or load the engine operates, the
lower the exhaust temperature. Accordingly, less
particulate matter (PM) inside the DPF is consumed,
therefore more accumulation of PM will occur, which
requires frequent regeneration, therefore avoid
prolonged idling if possible.

A Necessary conditions for "Regeneration"

When conditions below are all satisfied, regeneration
will start. However, if even one condition is deviated
during the process, the regeneration will be
interrupted.
(1) The engine coolant temperature.
(2) The DPF temperature.
(3) The engine speed is 1200 rpm or higher.

A Usually it takes 15-20 minutes to complete the

regeneration cycle.
Actual regeneration time may depend on ambient
temperature, exhaust temperature and engine speed.

STARTING THE ENGINE

1. Make sure the parking brake is set.

1. To set the parking brake;
(1) Interlock the brake pedals.
(2) Depress the brake pedals.
(3) Latch the brake pedals with the parking brake

lever.

(4) The parking brake warning indicator light on the

Easy Checker(TM) will turn "ON" when the
parking brake is set.

2. To release the parking brake, depress the brake
pedals again.

A It is recommended to do the regenerating while the

engine is warm.

A Do not unnecessarily start and interrupt the

regeneration process. Otherwise, a small amount of
fuel becomes mixed with the engine oil, which
degrades the oil quality.

A While the DPF is being regenerated, the engine air

flow rate is automatically limited to keep up the
exhaust temperature. Because of this the engine may
sound differently, this is normal for this engine.

A Just after the regeneration has ended, the DPF muffler

remains hot. It is advisable to keep the engine running
for about 5 minutes to allow cooling of the exhaust
components.

(1) Parking brake lever (A) "Interlock the brake pedals"

(B) "DEPRESS"
(C) "PULL"

(1) Parking brake warning indicator

A To prevent damage to the parking brake lever, make

sure that brake pedals are fully depressed before
pulling the parking brake lever up.

OPERATING THE ENGINE20

2. Make sure the fuel cock is in the
"OPEN" position.

(1) Fuel cock (A) "CLOSE"

(B) "OPEN"

3. Place the shift levers in "NEUTRAL"
position.

4. Place the PTO clutch control lever in

"OFF" position and position control
lever in "LOWEST" position.

(1) PTO clutch control lever
(2) Position control lever

"ON" "OFF"

(A) "DOWN"

5. Set the throttle lever to about 1/2 way.

(1) Hydraulic-shuttle shift lever
(2) Main gear shift lever

(N) "NEUTRAL POSITION"

(1) Hand throttle lever
(2) Foot throttle

"INCREASE"
"DECREASE"

6. Insert the key into the key switch and
turn it "ON".

21OPERATING THE ENGINE

"OFF" "ON" "START"

C Check Easy Checker(TM) Lamps:

1. When the key is turned "ON", lamps (2) (3) should
come on. If trouble should occur at any location while
the engine is running, the indicator lamp
corresponding to problem will turn "ON".

2. Suppose that the engine coolant temperature is not
high enough yet. The heater indicator (4) also turns
"ON" when the key is turned "ON" to preheat the
engine and goes off automatically when preheat is
completed.
Illumination time of indicator varies according to the
temperature of coolant.

3. The PTO clutch indicator (1) comes on while PTO
clutch control lever is engaged "ON" and goes off
when disengaged.

4. If the fuel level indicator (5) lights up, when fuel level is
very low, therefore add fuel and the light will turn
"OFF".

5. If the parking brake warning indicator (6) does not
illuminate, set the parking brake.

(1) PTO clutch indicator
(2) Electrical charge warning
indicator
(3) Engine oil pressure warning
indicator

A Some of the Easy Checker(TM) lamps may illuminate

or start flashing depending on the positions of the
levers and switches.

A Daily checks with the Easy Checker(TM) only, are not

sufficient. Never fail to conduct daily checks carefully
by referring to Daily Check. (See "DAILY CHECK" in
"PERIODIC SERVICE" section.)

(4) Heater indicator
(5) Fuel level indicator
(6) Parking brake warning
indicator
(7) Key switch

7. Fully depress the clutch pedal.

8. Turn the key to "START" position and
release when the engine starts.

A Because of the safety devices, the engine will not start

except when the PTO clutch control lever is placed in
the "OFF" position and shuttle shift lever is placed in
the "NEUTRAL" position.

9. Check to see that all the lamps on the
Easy Checker(TM) are "OFF".

If a lamp is still on, immediately stop the engine and
determine the cause.

10. Release the clutch pedal.

OPERATING THE ENGINE22

COLD WEATHER STARTING

If the ambient temperature is below 0 (32 ) and the
engine is very cold, follow the procedure below after
taking the step 1 through 5 in the previous pages.

6. Turn the key to "ON" position and hold
it until the heater indicator turns off.

Heater indicator comes on when the key is turned to "ON"
position and engine coolant temperature is below 0
(32 ), and goes off automatically when preheat is
completed.

(1) Heater indicator

7. Fully depress the clutch pedal.

8. Turn the key to the "START" position

and the engine should start.

(If the engine fails to start after 10 seconds, turn off the
key for 30 seconds. Then repeat steps 6 through 8. To
protect the battery and the starter, make sure that the
starter is not continuously turned for more than 10
seconds.)

STOPPING THE ENGINE

1. After slowing the engine to idle, wait 3 to
5 minutes for turbo to slow down and
then turn the key to "OFF".

2. Remove the key.

A If key does not stop the engine, consult your local

KUBOTA Dealer.

WARMING UP

To avoid personal injury or death:
A Be sure to set the parking brake during warm-

up.

A Be sure to set all shift levers to the "NEUTRAL"

positions and to place PTO switch in "OFF"
position during warm-up.

For 5 minutes after engine start-up, allow engine to warm
up without applying any load, this is to allow oil to reach
every engine part. If load should be applied to the engine
without this warm-up period, trouble such as seizure,
breakage or premature wear may develop.

BWarm-up and Transmission Oil at Low

Temperature Range

Hydraulic oil serves as transmission fluid. In cold weather,
the oil may be cold with increased viscosity. This can
cause delayed oil circulation or abnormally low hydraulic
pressure for some time after engine start-up. This in turn
can result in trouble in the hydraulic system.
To prevent the above, observe the following instructions:
Warm up the engine at about 50 % of rated rpm according
to the table below:

Ambient temperature Warm-up time requirement

Higher than -10 (14 ) Approx. 10 minutes

BBlock Heater (if equipped)

A block heater is available as an option from your dealer.
It will assist you in starting your tractor when the ambient
temperature is below -20 (-4 ).

-15 to -10 (5 to 14 ) 10 to 20 minutes

-20 to -15 (-4 to 5 ) 20 to 30 minutes

Below -20 (-4 ) More than 30 minutes

A Do not operate the tractor under full load condition until

it is sufficiently warmed up.

JUMP STARTING

To avoid personal injury or death:
A Battery gases can explode. Keep cigarettes,

sparks, and flames away from battery.

A If tractor battery is frozen, do not jump start

engine.

A Do not connect the other end of the negative

(-) jumper cable to the negative (-) terminal of
the tractor battery.

When jump starting the engine, follow the instructions
below to safely start the engine.

1. Bring the helper vehicle with a battery of the same
voltage as disabled tractor within easy cable reach.
"THE VEHICLES MUST NOT TOUCH".

2. Engage the parking brakes of both vehicles and put
the shift levers in neutral. Shut both engines off.

3. Wear eye protection and rubber gloves.

4. 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.

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

6. Clamp the other end to the engine block or frame of
the disabled tractor as far from the dead battery as
possible.

7. Start the helper vehicle and let its engine run for a few
moments. Start the disabled tractor.

8. Disconnect the jumper cables in the exact reverse
order of attachment. (Steps 6, 5 and 4).

23OPERATING THE ENGINE

(1) Dead battery
(2) Jumper cables
(3) Helper battery

A This machine has a 12 volt negative (-) ground starting

system.

A Use only same voltage for jump starting.
A Use of a higher voltage source on tractor's electrical

system could result in severe damage to tractor's
electrical system.
Use only matching voltage source when "Jump
starting" a low or dead battery condition.

A Do not operate the tractor with the battery cable

disconnected from the battery.

A Do not operate the tractor without the battery

mounted.

A Do not operate the tractor with the battery dead.

Charge the battery fully enough before operating the
tractor.
Otherwise the tractor might malfunction.

24 OPERATING THE TRACTOR

OPERATING THE TRACTOR

OPERATING NEW TRACTOR

How a new tractor is handled and maintained determines
the life of the tractor.
A new tractor just off the factory production line has been,
of course, tested, but the various parts are not
accustomed to each other, so care should be taken to
operate the tractor for the first 50 hours at a slower speed
and avoid excessive work or operation until the various
parts become "broken-in". The manner in which the
tractor is handled during the "breaking-in" period greatly
affects the life of your tractor.
Therefore, to obtain the maximum performance and the
longest life of the tractor, it is very important to properly
break-in your tractor. In handling a new tractor, the
following precautions should be observed.

BDo not Operate the Tractor at Full Speed

for the First 50 Hours.

A Do not start quickly nor apply the brakes suddenly.
A In winter, operate the tractor after fully warming up the

engine.

A Do not run the engine at speeds faster than

necessary.

A On rough roads, slow down to suitable speeds. Do not

operate the tractor at fast speed.

The above precautions are not limited only to new
tractors, but to all tractors. But it should be especially
observed in the case of new tractors.

BOARDING AND LEAVING THE TRACTOR

1. Never try to get on or off a moving tractor or jump off
the tractor to exit.

2. Face the tractor when getting into or out of the tractor.
Do not use the controls as hand holds to prevent
inadvertent machine movements.

3. Always keep steps and floor clean to avoid slippery
conditions.

OPERATING FOLDABLE ROPS

To avoid personal injury or death:
A When raising or folding the ROPS, apply

parking brake, stop the engine and remove the
key.
Always perform function from a stable position
at the rear of tractor.

A Fold the ROPS down only when absolutely

necessary and fold it up and lock it again as
soon as possible.

A Before proceeding to fold ROPS, check for any

possible interference with installed
implements and attachments.
If interference occurs, contact your KUBOTA
Dealer.

BTo Fold the ROPS

1. Remove both set bolts.

BChanging Lubricating Oil for New Tractors

The lubricating oil is especially important in the case of a
new tractor. The various parts are not "broken-in" and are
not accustomed to each other; small metal grit may
develop during the operation of the tractor; and this may
wear out or damage the parts. Therefore, care should be
taken to change the lubricating oil a little earlier than
would ordinarily be required.
For further details of change interval hours.
(See "MAINTENANCE" section.)

(1) Set bolt

2. Fold the ROPS.

To avoid personal injury:
A Hold the top of the ROPS tightly with both

hands and fold the ROPS slowly and carefully.

(1) ROPS

25OPERATING THE TRACTOR

BTo Raise the ROPS to Upright Position

1. Remove both hair pin cotters and set bolts.

(1) Set bolt
(2) Hair pin cotter

2. Raise ROPS to the upright position.

3. Align set bolt holes and insert both set bolts. Slightly
tighten the set bolts and secure them with the hair pin
cotters.

To avoid personal injury:
A Make sure that both set bolts are properly

installed and secured with the hair pin cotters.

(1) Set bolt
(2) Hair pin cotter

To avoid personal injury:
A Raise the ROPS slowly and carefully.

3. Align set bolt holes and insert both set bolts. Slightly
tighten the set bolts and secure them with the hair pin
cotters.

To avoid personal injury:
A Make sure that both set bolts are properly

installed as soon as the ROPS is in the upright
position and secured with the hair pin cotters.

(1) Set bolt
(2) Hair pin cotter

OPERATING THE TRACTOR26

BAdjustment of Foldable ROPS

A Adjust the free fall of the ROPS upper frame regularly.
A If you feel less friction in folding the ROPS, remove the

cotter pin (1), tighten the nut (2) until you feel the right
friction in the movement and then replace the cotter
pin.

(1) Cotter pin
(2) Nut

STARTING

BOperator's Seat

To avoid personal injury or death:
A Make adjustments to the seat only while the

tractor is stopped.

A Make sure that the seat is completely secured

after each adjustment.

A Do not allow any person other than the

operator to ride on the tractor.

1. Adjusting the Operator's Position.

A The seat and suspension should be adjusted to

ensure that the controls are comfortably at hand for the
operator, ensuring that the operator maintains a good
posture and minimizes risks from whole body
vibration.

(1) Travel adjust lever
(2) Suspension adjust lever

C Travel adjustment

Pull the travel adjust lever and slide the seat backward or
forward, as required. The seat will lock in position when
the lever is released.

C Suspension adjustment lever

Turn the suspension adjust lever to achieve the optimum
suspension setting.

A After adjusting the operator's seat, be sure to check to

see that the seat is properly locked.

(A) "UNLOCK"
(B) "TO DECREASE TENSION"
(C) "TO INCREASE TENSION"

27OPERATING THE TRACTOR

BSeat Belt

To avoid personal injury or death:
A Always use the seat belt when any ROPS or

CAB are installed.

A Do not use the seat belt if a foldable ROPS or a

retractable ROPS is down or there is no ROPS.

Adjust the seat belt for proper fit and connect the buckle.
This seat belt is auto-locking retractable type.

2. Selecting Light Switch Positions.

BLight Switch

Turn the light switch clockwise, and the following lights are
activated on the switch position.

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

....... Head lights dimmed, low beam.

....... Head lights ON, high beam.

(1) Seat belt

(1) Head light switch

BTurn Signal / Hazard Light Switch

C Hazard Light

1. When the hazard light switch is pushed, the hazard
lights flash, along with the L/H and R/H indicators on
the instrument panel.

2. Push the hazard light switch again to turn off the
hazard lights.

C Turn Signal with Hazard Light

1. To indicate a right turn with the hazard lights already
flashing, turn the switch clockwise.

2. To indicate a left turn with the hazard lights already
flashing, turn the switch counterclockwise.

3. When the left or right turn signal is activated in
combination with the hazard lights, the indicated
turning light will flash and the other will stay on.

C Turn Signal without Hazard Light

1. To indicate a right turn without hazard lights, turn the
switch clockwise.

2. To indicate a left turn without hazard lights, turn the
switch counterclockwise.

3. When the left or right turn signal is activated without
the hazard lights, the indicated turning light will flash
and the other will stay on.

OPERATING THE TRACTOR28

A The hazard light switch is operative when the key

switch is in either the "ON" or "OFF" position.

A The turn signal light switch is only operative when the

key switch is in the "ON" position.

A Be sure to return the turn signal switch to center

position after turning.

(1)Hazard light switch
(2)Turn signal light switch
(3)Hazard / Turn signal indicator

(A) "RIGHT TURN"
(B) "LEFT TURN"

3. Checking the Brake Pedal.

BBrake Pedals (Right and Left)

To avoid personal injury or death:
A Be sure to interlock the right and left pedals.

Applying only one rear wheel brake at high
speeds could cause the tractor to swerve or
roll-over.

A Be sure brake pedals have equal adjustment

when using locked together. Incorrect or
unequal brake pedal adjustment can cause the
tractor to swerve or roll-over.

To avoid personal injury or death:
A Do not make brake suddenly.

An accident may occur as a result of a heavy
towed load shifting forward or loss of control

A To avoid skidding and loss of steering control

when driving on icy, wet, or loose surfaces,
make sure the tractor is correctly ballasted,
operated at reduced speed, operated with front
wheel drive engaged (if equipped).

A The braking characteristics are different

between 2 and 4-wheel drive. Be aware of the
difference and use carefully.

(1)Hazard light
(2)Turn signal light

1. Before operating the tractor on the road or before
applying the parking brake, be sure to interlock the
right and left pedals as illustrated below.

2. Use individual brakes to assist in making sharp turns
at slow speeds (Field Operation Only). Disengage the
brake pedal lock and depress only one brake pedal.

3. Be sure brake pedals have equal adjustment when
using locked together.

(1) Brake pedal lock (A) "LOCK"

(B) "RELEASE"

29OPERATING THE TRACTOR

4. Raise the Implement.

(see "HYDRAULIC UNIT" section.)

(1) Position control lever (A) "UP"

5. Depress the Clutch Pedal.

BClutch Pedal

To avoid personal injury or death:
A Sudden release of the clutch may cause the

tractor to lunge in an unexpected manner.

The clutch is disengaged when the clutch pedal is fully
pressed down.

(1) Clutch pedal

To help prevent premature clutch wear:

A The clutch pedal must be quickly disengaged and be

slowly engaged.

A Avoid operating the tractor with your foot resting on the

clutch pedal.

A Select proper gear and engine speed depending on

the type of job.

OPERATING THE TRACTOR30

6. Selecting the Travel Speed.

(1) Hydraulic - shuttle shift lever
(2) Main gear shift lever
(3) Range gear shift lever

(F) "FORWARD"
(N) "NEUTRAL POSITION"
(R) "REVERSE"

By combination of using the main gear shift lever, the
range gear shift lever and hydraulic-shuttle shift lever,
forward speeds and reverse speeds shown in the table
below are obtained.

Standard model

8 forward speeds
8 reverse speeds

BMain Gear Shift Lever

The main gear shift is fully synchronized to shift without
stopping.

A The main gear shift may be shifted between speeds

on-the-go, but the clutch must be depressed.

BRange Gear Shift Lever

The range gear shift can only be shifted when the tractor
is completely stopped and the clutch is depressed.

"LOW"
"HIGH"

A To avoid transmission damage, depress clutch pedal

and stop the tractor before shifting between ranges.

31OPERATING THE TRACTOR

BHydraulic-Shuttle Shift Lever

Raise up and shift the shuttle shift lever forward to obtain
forward speeds and shift back to obtain reverse speeds.
This shifting does not require clutch operation.

A The hydraulic-shuttle shift lever may be shifted while

the tractor is moving slowly.

A While the shuttle shift lever is at the "NEUTRAL"

position, the "N" character appears on the LCD
monitor.

BFront Wheel Drive Lever

To avoid personal injury or death:
A Do not engage the front wheel drive when

traveling at road speed.

A When driving on icy, wet, or loose surfaces,

make sure the tractor is correctly ballasted to
avoid skidding and loss of steering control.
Operate at reduced speed and engage front
wheel drive.

A An accident may occur if the tractor is

suddenly braked, such as by heavy towed
loads shifting forward or loss of control.

A The braking characteristics are different

between 2 and 4-wheel drive. Be aware of the
difference and use carefully.

Use the lever to engage the front wheels with the tractor
stopped. Shift the lever to "ON" to engage the front wheel
drive.

(N) "NEUTRAL"

(1) Front wheel drive lever (A) "ON"

(B) "OFF"

A Tires will wear quickly if front wheel drive is engaged

on paved roads.

A Reduce the rear wheels traction before engaging the

front wheel drive lever.

C Front wheel drive is effective for the following

jobs:

1. When greater pulling force is needed, such as working
in a wet field, when pulling a trailer, or when working
with a front-end loader.

2. When working in sandy soil.

3. When working on a hard soil where a rotary tiller might
push the tractor forward.

4. For increased braking at reduced speed.

OPERATING THE TRACTOR32

7. Accelerate the Engine.

BHand Throttle Lever

Pulling the throttle lever back decreases engine speed,
and pushing it forward increases engine speed.

BFoot Throttle

Use the foot throttle when traveling on the road. Press
down on it for higher speed. The foot throttle is interlocked
with the hand throttle lever; when using the foot throttle,
keep the hand throttle lever in low idling position.

STOPPING

BStopping

1. Slow down the engine.

2. Step on the clutch and brake pedal.

3. After the tractor has stopped, disengage the PTO,
lower the implement to the ground, shift the
transmission to neutral, release the clutch pedal, and
set the parking brake.

CHECK DURING DRIVING

BImmediately Stop the Engine if:

A The engine suddenly slows down or accelerates,
A Unusual noises are suddenly heard,
A Exhaust fumes suddenly become very dark,

BEasy Checker(TM)

If the warning lamps in the Easy Checker(TM) come on
during operation, immediately stop the engine, and find
the cause as shown below.
Never operate the tractor while Easy Checker(TM) lamp is
on.

(1) Hand throttle lever
(2) Foot throttle

"INCREASE"
"DECREASE"

8. Unlock the Brake Pedals and Slowly
Release the Clutch.

BParking Brake

To release the parking brake, depress the brake pedals
again.

(1) Easy Checker(TM)

(1) Brake pedals

33OPERATING THE TRACTOR

Engine warning
This indicator serves the following two functions. If the
indicator lights up, pinpoint the cause and take a
proper measure.

1. Error with the engine control system
If during operation the water temperature gauge reads
an acceptable level but the warning lamp in the Easy
Checker(TM) comes on, stop the engine and get it
restarted. If the error happens again, consult your local
KUBOTA Dealer.

A If the warning indicator lights up, the following

phenomena may appear depending on the engine's
trouble spot.

A The engine stops unexpectedly.
A The engine fails to start or gets interrupted just

after start.

A The engine output is not enough.
A The engine output is enough, but the warning

indicator stays on.
If the engine output is not enough, immediately
interrupt the operation and move the tractor to a safe
place and stop the engine.

2. Engine overheat
If the water temperature gauge reads an unusual level
and the warning lamp in the Easy Checker(TM) comes
on, the engine may have got overheated. Check the
tractor by referring to "TROUBLESHOOTING" section.

Engine oil pressure

If the oil pressure in the engine goes below the
prescribed level, the warning lamp in the Easy
Checker(TM) will come on.
If this should happen during operation, and it does not
go off when the engine is accelerated to more than
1000 rpm, check level of engine oil.
(See "Checking Engine Oil Level" in "DAILY CHECK"
in "PERIODIC SERVICE" section.)

Emission indicator

If this indicator lights up, take the steps to lower the
water temperature. This helps keep the emission
clean.

Electrical charge
If the alternator is not charging the battery, the Easy
Checker(TM) will come on.
If this should happen during operation, check the

electrical charging system or consult your local
KUBOTA Dealer.

Master system warning
If trouble should occur at the engine, transmission or

other control parts, the indicator flashes as a warning.
If the trouble is not corrected by restarting the tractor,
consult your local KUBOTA Dealer.

A For checking and servicing of your tractor, consult

your local KUBOTA Dealer for instructions.

BFuel Gauge

When the key switch is on, the fuel gauge indicates the
fuel level.
Be careful not to empty the fuel tank. Otherwise air may
enter the fuel system.
Should this happen, the system should be bled (See
"Bleeding Fuel System" in "SERVICE AS REQUIRED" in
"PERIODIC SERVICE" section.)

Fuel level
If the fuel in the tank goes below the prescribed level,
the warning lamp in the Easy Checker(TM) will come

on. (less than 20 L (5.3 gals.))
If this should happen during operation, refuel as soon
as possible.
(See "Checking and Refueling" in "DAILY CHECK" in
"PERIODIC SERVICE" section.)

A When the fuel warning lamp lights up, refuel the tank

as soon as possible. If the tractor runs out of fuel and
stalls, the engine and its components may be
damaged.

(1) Fuel gauge (A) "FULL"

(B) "EMPTY"

OPERATING THE TRACTOR34

BCoolant Temperature Gauge

To avoid personal injury or death:
A Do not remove radiator cap until coolant

temperature is well below its boiling point.
Then loosen cap slightly to the stop to relieve
any pressure before removing cap completely.

1. With the key switch at "ON", this gauge indicates the
temperature of the coolant. "C" for "cold" and "H" for
"hot."

2. If the indicator reaches the red zone position, engine
coolant is overheated. Check the tractor by referring to
"TROUBLESHOOTING" section.

(1) Coolant temperature gauge (A) "RED ZONE"

BTachometer

The tachometer indicates the engine speed on the dial.

(1) Engine revolution

35OPERATING THE TRACTOR

LCD MONITOR

BChanging Display Mode

1. The LCD monitor gives two different display modes: "Hour meter" and "PTO speed". Each time the PTO/Hour meter
select switch is pressed, the mode is switched to the changing display.

2. The PTO clutch control lever works for the following automatic display modes.

1) PTO clutch control lever ON: PTO speed is displayed.

2) PTO clutch control lever OFF: Hour meter is displayed.

(1) LCD monitor
(2) Hour Meter Indication
(3) PTO Indication
(4) PTO / Hour Meter Select Switch
(5) Select Switch

36 OPERATING THE TRACTOR

Display mode switching
[Hour meter mode] and [PTO
speed mode]

1

PTO clutch control lever PTO OFF (Hour meter mode) A Total operating hours are displayed.

2

Hour meter mode A Total operating hours are displayed.

A The hour meter indicates in 5 digits the

hours the tractor has been used; the last
digit indicates 1/10 of an hour.

PTO speed mode A PTO speed are displayed.

A When the PTO clutch control lever is in

"OFF" position, "OFF" is displayed.

A See "PTO Speed Display Mode Switching"

in "PTO TACHOMETER / HOURMETER"
in "OPERATING THE TRACTOR" section.

A The hour meter indicates in 5 digits the

hours the tractor has been used; the last
digit indicates 1/10 of an hour.

A When the PTO / Hour meter select switch is

pressed in this state, "OFF" is displayed.

PTO ON (PTO speed mode) A PTO speed are displayed.

A When the PTO / Hour meter select switch is

pressed in this state, the display mode
switches to hour meter mode.

A In cold weather the LCD monitor response will normally be slower and the visibility be less, than in warmer weather.

37OPERATING THE TRACTOR

BPTO Speed Display Mode Switching

[with 540 rpm model]

The PTO speed display mode has been factory-set at Code 1. Do not attempt to change the code. Otherwise the correct
PTO speed will not be displayed in the LCD monitor.
(NOTE: The current code can be checked in the following switching procedure.)

[with 540/540E rpm model (Option)]

The PTO speed display mode has been factory-set at Code 1. Change the code to Code2 in the following switching
procedure. Otherwise the correct PTO speed will not be displayed in the LCD monitor.

C Switching procedure

OPERATING THE TRACTOR38

ELECTRONIC ENGINE CONTROL

BConstant RPM Management Control

Constant RPM Management can be turned "ON" or "OFF"
by operating the switch. Pressing the switch turns the
control "ON" and pressing the switch again turns it "OFF".

C When constant RPM management is "ON"

Fluctuations in the engine speed due to load fluctuations
are reduced and the travel speed and PTO speed are kept
nearly constant, allowing stable work. When constant
RPM management is "ON", the switch’s indicator light up.

C When constant RPM management is "OFF

As in a conventional engine, the engine speed increases
or decreases according to changes in the load. The
operator judges the size of the load from the engine speed
and engine sound, and can adjust the travel speed or
plowing depth to prevent overload on the tractor.

A There is a limit to the range within which a constant

speed can be maintained. If a load exceeding the
engine performance is applied, the engine speed will
drop.

A The purpose of constant RPM management is not to

increase the engine power.

PARKING

BParking

To avoid personal injury or death:
BEFORE DISMOUNTING TRACTOR
A ALWAYS SET PARKING BRAKE AND LOWER

ALL IMPLEMENTS TO THE GROUND.
Leaving transmission in gear with the engine
stopped will not prevent the tractor from
accidental rolling.

A STOP THE ENGINE AND REMOVE THE KEY.

1. When parking, be sure to set the parking brake.
To set the parking brake;
(1) Interlock the brake pedals.
(2) Depress the brake pedals.
(3) Latch the brake pedals with the parking brake

lever.

(1) Constant RPM management switch with indicator

A In a mechanically-controlled engine, the engine speed

changes according to increases and decreases in the
load.
For example, when working in a hilly area, the load
increases and engine speed drops while ascending a
slope, and conversely the load drops when
descending. These changes in engine speed affect
the travel speed and PTO-driven implements. In order
to minimize these effects, the operator must make fine
adjustments to the travel speed and hand throttle
lever.
When the constant RPM management switch in this
tractor with its electronically controlled engine is
turned "ON", the engine speed will be kept nearly
constant in response to a certain level of load
fluctuations. This improves the accuracy of work
without the need for troublesome manipulation of the
travel speed and hand throttle lever.

(1) Parking brake lever (A) Interlock the brake pedals

(B) "DEPRESS"
(C) "PULL"

A To prevent damage to the parking brake lever, make

sure that brake pedals are fully depressed before
pulling the parking brake lever up.

2. Before getting off the tractor, disengage the PTO,
lower all implements to the ground, place all control
levers in their neutral positions, set the parking brake,
stop the engine and remove the key.

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

39OPERATING THE TRACTOR

A Do not leave your tractor in the rain. If it cannot be

avoided, cover the muffler pipe to prevent water
entering.

OPERATING TECHNIQUES

BDifferential Lock

To avoid personal injury or death due to loss of
steering control:
A Do not operate the tractor at high speed with

differential lock engaged.

A Do not attempt to turn with the differential lock

engaged.

A Be sure to release the differential lock before

making a turn in field conditions.

If one of the rear wheels should slip, step on the
differential lock pedal. Both wheels will turn together, then
reduce slippage.
Differential lock is maintained only while the pedal is
depressed.

BOperating the Tractor on a Road

To avoid personal injury or death:
A To help assure straight line stops when driving

at transport speeds, lock the brake pedals
together. Uneven braking at road speeds could
cause the tractor to roll-over.

A When traveling on road with 3-point hitch

mounted implement attached, be sure to have
sufficient front weight on the tractor to
maintain steering ability.

Be sure SMV emblem and warning lamps are clean and
visible. If towed or rear-mounted equipment obstructs
these safety devices, install SMV emblem and warning
lamps on equipment.
Consult your local KUBOTA Dealer for further details.

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

(B) Release to "DISENGAGE"

A When using the differential lock, always slow the

engine down.

A To prevent damage to power train, do not engage

differential lock when one wheel is spinning and the
other is completely stopped.

A If the differential lock cannot be released, step lightly

on the brake pedals alternately.

(1) SMV emblem
(2) Bracket

OPERATING THE TRACTOR40

BOperating on Slopes and Rough Terrain

To avoid personal injury or death:
A Always back up when going up a steep slope.

Driving forward could cause the tractor to tip
over backward. Stay off hills and slopes too
steep for safe operation.

A Avoid changing gears when climbing or

descending a slope.

A If operating on a slope, never disengage the

clutch or shift levers to neutral. Doing so could
cause loss of control.

A Do not drive the tractor close to the edges of

ditches or banks which may collapse under the
weight of the tractor. Especially when the
ground is loose or wet.

1. Be sure wheel tread is adjusted to provide maximum
stability.
(See "WHEEL ADJUSTMENT" in "TIRES, WHEELS
AND BALLAST" section.)

2. Slow down for slopes, rough ground, and sharp turns,
especially when transporting heavy, rear mounted
equipment.

3. Before descending a slope, shift to a gear low enough
to control speed without using brakes.

BElectrical Outlet

A electrical outlet is supplied for use with implement.

(1) Accessory electrical outlet (15A)

BTransport the Tractor Safely

1. The tractor, if damaged, must be carried on a truck.
Secure the tractor tightly with ropes.

2. Follow the instruction below when towing the tractor:
Otherwise, the tractor’s powertrain may get damaged.

A Set the all shift levers to "NEUTRAL" position.
A If possible, start engine and select 2WD, if creep

speed is fitted ensure that it is disengaged.

A Tow the tractor using its front hitch or drawbar.
A Never tow faster than "10 km/h (6.2 mph)".

BDirections for Use of Power Steering

1. Power steering is activated only while the engine is
running. Slow engine speeds make the steering a little
heavier. While the engine is stopped, the tractor
functions in the same manner as tractors without
power steering.

2. When the steering wheel is turned all the way to the
stop, the relief valve is activated. Do not hold the
steering wheel in this position for a long period of time.

3. Avoid turning the steering wheel while the tractor is
stopped, or tires may wear out sooner.

4. The power steering mechanism makes the steering
easier. Be careful when driving on a road at high
speeds.

(1) Accessory electrical outlet for rear work light (35W)

PTO

41PTO

PTO OPERATION

To avoid personal injury or death:
A Disengage PTO, stop engine, and allow all

rotating components to come to a complete
stop before connecting, disconnecting,
adjusting, or cleaning any PTO driven
equipment.

BPTO Clutch Control Lever

1. The tractor has a 540 rpm speed position and 6-spline
shaft.

2. The PTO clutch control lever engages or disengages
the PTO clutch which gives the PTO independent
control.

Shift the lever to "ON" to engage the PTO clutch. Shift the
lever to "OFF" to disengage the PTO clutch.

A Tractor engine will not start if PTO clutch control lever

is in the engaged "ON" position.

A If the PTO system is engaged and you stand up from

the seat, the warning buzzer will whistle for about 10
seconds after standing up.
This is because the tractor is equipped with "Operator
Presence Control System".

C PTO Clutch Indicator

The PTO clutch indicator turns on while PTO clutch
control lever is in "ON" (Engage) position.

(1) PTO clutch control lever "ON" "OFF"

A To avoid shock loads to the PTO, reduce engine

speed when engaging the PTO, then open the throttle
to the recommended speed.

A To avoid damage of PTO clutch and implement, shift

the PTO clutch control lever slowly, when engaging
the PTO clutch. Do not keep the PTO clutch control
lever half way.
Proper warm up is strongly recommended in cold
weather.
Do not continuously shift the PTO clutch control lever.

(1) PTO clutch indicator

PTO42

BPTO Gear Shift Lever

[if equipped]

To avoid personal injury or death:
A Be sure to observe the PTO shaft speed

prescribed for the individual implements. It is
extremely dangerous to run an implement at
high speed that is meant to be operated at low
speed. Use only when this higher rpm is
specifically recommended by the implement
manufacturer.

The PTO gear shift lever can be set to either 540 rpm or
540E rpm positions.
Move this lever to either position with the PTO clutch
control switch set to "OFF".

BPTO Speed Limiter

A Move the PTO gear shift lever (if equipped) to "540E"

and then set the PTO clutch control lever to the "ON"
position, and the rev-limiter indicator lights up on the
meter panel.

A If set the PTO clutch control lever to the "ON" position

with the engine rpm higher than the PTO 540E limit
level, the PTO clutch indicator on the meter panel
starts blinking and the PTO is disabled. After a while,
the engine rpm automatically drops below the PTO
540E limit level and the PTO starts functioning. At the
same time, the flashing PTO clutch indicator stays
"ON".

A If set the PTO clutch control lever to the "OFF" position

but the engine rpm fails to rise with the throttle, return
the engine rpm to a lower level. This enables
acceleration again.

(1) PTO gear shift lever (A) 540 rpm

(B) 540E rpm

A When light load, select the "540E" position for

economical operation.

PTO gear
shift lever

540 2160 540

540E 1828 540

Engine speed

rpm

PTO speed

rpm

(1) Rev-limiter indicator
(2) PTO clutch indicator

PTO Limitation PTO / Engine speed (rpm)

540E 630 / 2132

43PTO

BLCD Monitor Message

1. The PTO rpm can be checked in the LCD monitor.
(See "LCD MONITOR" in "OPERATING THE
TRACTOR" section.)

2. When the PTO system gets engaged (ON), the
indicator lights up.

(1) LCD monitor
(2) PTO clutch indicator

BPTO Shaft Cover and Shaft Cap

Keep the PTO shaft cover in place at all times. Replace
the PTO shaft cap when the PTO is not in use. Before
connecting or disconnecting a drive shaft to PTO shaft, be
sure engine is "OFF". Raise up the PTO shaft cover.
Afterward be sure to return the PTO shaft cover to the
"NORMAL POSITION".

(1) PTO shaft cover
(2) PTO shaft cap

(A) "NORMAL POSITION"
(B) "RAISED POSITION"

A The universal joint of the PTO drive shaft is technically

limited in its moving angle. Refer to the PTO Drive
Shaft Instructions for proper use.

44 3-POINT HITCH & DRAWBAR

3-POINT HITCH & DRAWBAR

(1) Top link
(2) Lifting rod (Left)
(3) Telescopic stabilizers
(4) Lower link
(5) Lifting rod (Right)
(6) Drawbar

453-POINT HITCH & DRAWBAR

3-POINT HITCH

1. Make preparations for attaching

implement.

BCategory 1 & 2

The standard tractor has both category 1 & 2.
Category 1 type is standard and assemble all parts shown
as below.
To change from category 1 to category 2.

1. Remove adjusting collar from the lower link.

2. Add side collar onto both the lower links.

3. Remove adjusting collar from the rear top link pin.

4. Use the correct rear top link pin for category 2.

BSelecting the holes of Lower Links

There are 2 holes in the lower links. For most operations
the lifting rods should be attached to the (B) hole.

(1) Lower link
(2) Lifting rod

A The lifting rods may be attached to (A) for greater

lifting force.

holes: (A), (B)

(1) Lower link
(2) Top link
(3) Collar, lower link (1)
(4) Top link rear pin (1)

(5) Collar, top link (1)
(6) Top link rear pin (2)
(7) Collar, side (2)

BSelecting the Top Link Mounting Holes

Select the proper set of holes by referring to the
"Hydraulic Control Unit Use Reference Chart" in
"HYDRAULIC UNIT" section.

(1) Top link
(2) Mounting hole
(3) Handle

BDrawbar

Remove the drawbar if a close mounted implement is
attached.

3-POINT HITCH & DRAWBAR46

2. Attaching and detaching implements

To avoid personal injury or death:

A Be sure to stop the engine.
A Do not stand between tractor and implement

unless parking brake is applied.

A Before attaching or detaching implement,

locate the tractor and implement on a firm level
surface.

A Whenever an implement or other attachment is

connected to the tractor 3-point hitch, check
full range of operation for interference, binding
or PTO separation.

A Do not exceed maximum allowable length of

right lifting rod, or the lifting rod will come apart
and the 3-point equipment may fall.

BLifting Rod (Right)

To avoid personal injury or death:
A Do not extend lifting rod beyond the groove on

the thread rod.

Level a 3-point mounted implement from side to side by
turning the adjusting handle to shorten or lengthen the
adjustable lifting rod with the implement on the ground.
After adjustment, lock adjusting handle with handle
stopper.

BTop Link

To avoid personal injury or death:
A When extending the top link, do not exceed the

groove on the top link thread, or the top link will
come apart and the 3-point equipment may fall.

1. Adjust the angle of the implement to the desired
position by shortening or lengthening the top link.

2. The proper length of the top link varies according to
the type of implement being used.

(1) Top link (A) "GROOVE"

(B) "Length of the screw"

A The length of the screw at both ends of the top link

must be the same always.

(1) Lifting rod
(2) Stopper
(3) Adjusting handle

(A) "GROOVE"

473-POINT HITCH & DRAWBAR

BTelescopic Stabilizers

Adjust the telescopic stabilizers to control horizontal sway
of the implement. Select the proper set of holes by
referring to the "Hydraulic Control Unit Use Reference
Chart" in "REMOTE HYDRAULIC CONTROL SYSTEM"
in "HYDRAULIC UNIT" section.
After aligning satisfactorily, insert the set-pin through any
one of the 4 holes on the outer tube that align with one of
the holes on the inner bar, both stabilizers will be locked.
If the set-pin is inserted through the slot to engage one of
the holes on the inner bar, a limited degree of sway will be
permitted.

DRAWBAR

To avoid personal injury or death:
A Never pull from the top link, the rear axle or any

point above the drawbar. Doing so could cause
the tractor to tip over rearward causing
personal injury or death.

A The drawbar load is referred to "IMPLEMENT

LIMITATIONS" section.

(1) Outer tube
(2) Inner bar
(3) Set-pin

(4) Hole
(5) Slot

BTelescopic Lower Links

To attach an implement, follow the instructions below:

1. Push the levers, pull out the lower link ends, and
attach to the implement.

2. Back up the tractor slightly to make sure the lower links
are pushed in securely.

(1) Drawbar
(2) Pivot pin
(3) Locating pin

BSwing Drawbar

The drawbar can be used in 3 different ways as illustrated
below. Assemble it correctly with locating pins.

(1) Drawbar
(2) Locating pin

(1) Lever (A) "PUSH"

(B) "PULL OUT"

48 HYDRAULIC UNIT

HYDRAULIC UNIT

The standard tractor has following hydraulic control
systems as shown below. Therefore, use the most
appropriate system for the implement you are using.

C 3-Point Hitch Control System

1. Position Control

2. Float Control

C Remote Hydraulic Control System

A Do not operate until the engine is warmed up. If

operation is attempted when the engine is still cold, the
hydraulic system may be damaged.

A If noises are heard when implement is lifting after the

hydraulic control lever has been activated, the
hydraulic mechanism is not adjusted properly. Unless
corrected, the unit will be damaged. Contact your
KUBOTA Dealer for adjustment.

(1) Position control lever (A) "FLOAT"

(B) "DOWN"
(C) "UP"

3-POINT HITCH CONTROL SYSTEM

To avoid personal injury or death:
A Before using the 3-point hitch controls, ensure

that no person or object is in the area of the
implement or 3-point hitch. Do not stand on or
near the implement or between the implement
and tractor when operating the 3-point hitch
controls.

BPosition Control

C Hydraulic control lever

This will control the working depth of 3-point hitch
mounted implement regardless of the amount of pull
required.

BFloat Control

Place the position control lever in the float position to
make the lower links move freely along with the ground
conditions.

B3-point Hitch Lowering Speed

To avoid personal injury or death:
A Fast lowering speed may cause damage or

injury. Lowering speed of implement should be
adjusted to 2 or more seconds.

The lowering speed of the 3-point hitch can be controlled
by adjusting the 3-point hitch lowering speed knob.

(1) 3-point hitch lowering speed knob (A) "FAST"

(B) "SLOW"
(C) "LOCK"

REMOTE HYDRAULIC CONTROL SYSTEM

The hydraulic auxiliary control valves can be installed up
to triple segments.

BRemote Control Valve

There are 2 types of remote valves available for these
models.
A Double acting valve with detents and self cancelling:

This valve may be placed in the detent mode. The
lever will stay in this position until the pressure reaches
a predetermined level or a cylinder reaches the end of
its stroke. Then it will automatically return to neutral

A Double acting valve with float position:

This valve may be placed in the float mode with the
control lever all the way forward. The cylinder is free to
extend or retract, letting an implement such as a
loader bucket follow the ground.

BRemote Control Valve Lever

The remote control valve lever directs pressurized oil flow
to the implement hydraulic system.

[Example: Installing triple segment valves]

1st

Double acting valve with detents and self
cancelling (standard)

49HYDRAULIC UNIT

(1) Remote control valve lever 1
(2) Remote control valve lever 2
(3) Remote control valve lever 3

2nd

3rd

Double acting valve with float position
(option)

Pressure

Returning

Lever (1)

Z (detent) Y X Z (detent)

[A] out in

Port

[B] in out

Lever (2)

Z (detent) Y X

[C] in

Port

[D] out in out

Lever (3)

Z (detent) Y X

Lever position

Lever position

out in

Float

Lever position

[E] in

Port

[F] out in out

Float

out in

HYDRAULIC UNIT50

A Do not hold the lever in the "pull" or "push" position

once the remote cylinder has reached the end of the
stroke, as this will cause oil to flow through the relief
valve. Forcing oil through the relief valve for extended
periods will overheat the oil.

A When using the tractor hydraulic system to power front

loader, do not operate boom and bucket cylinders
simultaneously.

A Connect the pressure of load side of implement

cylinders to ports [B], [D] or [F] which have built in load
check valve to prevent leak down.

A To use the single-acting cylinder with the float valve,

connect this cylinder to the [B], [D] or [F] port.
To extend a single-acting cylinder, pull the remote
control valve lever rearward. To retract a cylinder,
push it fully forward to the "FLOAT" position. Do not
hold it in the down position, the transmission fluid may
be overheat.

BRemote Control Valve Coupler

Connecting and Disconnecting

To avoid personal injury or death:
A Stop the engine and relieve pressure before

connecting or disconnecting lines.

A Do not use your hand to check for leaks.

C Connecting

1. Clean both couplers.

2. Remove dust plugs.

3. Insert the implement coupler to the tractor hydraulic
coupler.

4. Pull the implement coupler slightly to make sure
couplers are firmly connected.

C Disconnecting

1. Lower the implement first to the ground to release
hydraulic pressure in the hoses.

2. Clean the couplers.

3. Relieve pressure by moving hydraulic control levers
with engine shut off. Pull the hose straight from the
hydraulic coupler to release it.

4. Clean oil and dust from the coupler, then replace the
dust plugs.

A Your local KUBOTA Dealer can supply parts to adapt

couplers to hydraulic hoses.

51HYDRAULIC UNIT

BHydraulic Control Unit Use Reference Chart

In order to handle the hydraulics properly, the operator must be familiar with the following.
Though this information may not be applicable to all types of implements and soil conditions, it is useful for general
conditions.

Implement Remarks

Moldboard plow

Disc plow

Harrow (spike,
springtooth, disc
type)

Sub-soiler ...

Weeder, ridger...

Earthmover,
digger, scraper,
manure fork,

rear carrier.......

Mower (mid-and
rear-mount type)
Hayrake,

tedder......

Soil condition Top link

mounting holes

Light soil

Medium soil

Heavy soil

---

--- 2 or 3

--- 3

3 or 4

2 or 3

2 or 3

2, 3 or 4

(1) Position control lever Gauge wheel (1) Telescopic

stabilizers

YES/NO Loose

Position control

YES

YES/NO

Tighten

NO

Insert the set-pin
through the slot on
the outer tube that
align with one of
the holes on the
inner bar.
For implements
with gauge wheels,
lower the position
control lever all
way.

Telescopic
stabilizer should be
tight enough to
prevent excessive
implement
movement when
implement is in
raised position.
For implements
with gauge wheels,
lower the position
control lever all
way.

52 TIRES, WHEELS AND BALLAST

TIRES, WHEELS AND BALLAST

TIRES

BDual Tires

To avoid personal injury or death:
A Do not attempt to mount a tire on a rim. This

should be done by a qualified person with the
proper equipment.

A Always maintain the correct tire pressure.

Do not inflate tires above the recommended
pressure shown in the operator's manual.

A Do not use tires other than those approved by

KUBOTA.

A When optional different-diameter tires are fitted on the

machine, the travel speed display mode must be
changed. Otherwise the travel speed will not get
correctly displayed. Such mode switching is also
needed when the original tires are back on the
machine.
(See "LCD MONITOR" in "OPERATING THE
TRACTOR" section.)

Dual tires are not approved.

WHEEL ADJUSTMENT

To avoid personal injury or death:
A When working on slopes or when working with

trailer, set the wheel tread as wide as practical
for maximum stability.

A Support tractor securely on stands before

removing a wheel.

A Do not work under any hydraulically supported

devices. They can settle, suddenly leak down,
or be accidentally lowered. If necessary to work
under tractor or any machine elements for
servicing or adjustment, securely support them
with stands or suitable blocking beforehand.

A Never operate tractor with a loose rim, wheel,

or axle.

BInflation Pressure

Though the tire pressure is factory-set to the prescribed
level, it naturally drops slowly in the course of time. Thus,
check it everyday and inflate as necessary.

A Maintain the maximum pressure in front tires, if using

a front loader or when equipped with a full load of front
weights.

Tire sizes Inflation Pressure

8.3-24, 6PR 200 kPa (2.0 kgf/cm , 29 psi.)

9.5-22, 6PR 200 kPa (2.0 kgf/cm , 29 psi.)
Front
4WD

Front
2WD

11.2R20

(280/85R20)

29x12.5-15NHS 138 kPa (1.4 kgf/cm , 20 psi.)

12.5/80-18, R4 317 kPa (3.2 kgf/cm , 46 psi.)

6.50-16, 6PR 317 kPa (3.2 kgf/cm , 46 psi.)

7.50-16, 6PR 276 kPa (2.8 kgf/cm , 40 psi.)

9.5L-15, 6PR 220 kPa (2.2 kgf/cm , 32 psi.)

29x12.5-15NHS 138 kPa (1.4 kgf/cm , 20 psi.)

14.9-28 138 kPa (1.4 kgf/cm , 20 psi.)

16.9-28 124 kPa (1.3 kgf/cm , 18 psi.)

Rear

21.5L-16.1, R3 83 kPa (0.84 kgf/cm , 12 psi.)

16.9-24, R4 200 kPa (2.0 kgf/cm , 29 psi.)

200 kPa (2.0 kgf/cm , 29 psi.)

BFront Wheels (with 2-wheel drive)

Front tread width can be adjusted as shown with the
standard equipped tires.

To change the tread width

1. Remove the front axle mounting bolts and the tie-rod
mounting bolts.

2. Move the front axles (right and left) to the desired
position, and tighten the bolts.

3. Adjust the toe-in: [ 1 to 5 mm (0.04 to 0.2 in.)]
(See "Adjusting Toe-in" in "EVERY 200 HOURS" in
"PERIODIC SERVICE" section.)

53TIRES, WHEELS AND BALLAST

(1) Front axle mounting bolt
124 to 147 N-m (12.6 to 15 kgf-m) [91.5 to 108.9 ft-lbs.]
(2) Tie-rod mounting bolt
61 to 71 N-m (6.2 to 7.2 kgf-m) [44.8 to 52.1 ft-lbs.]
(3) Tie rod clamp

(1) Extension1 (A) "TREAD"

A The front tread width for the front loader application on

2WD models should not be greater than 1420 mm
(55.9 in.).

TIRES, WHEELS AND BALLAST54

A Wheels with beveled or tapered holes: Use the

tapered side of lug nut.

To avoid personal injury or death:
A Before jacking up the tractor, park it on a firm

and level ground and chock the rear wheels.

A Fix the front axle to keep it from swinging.
A Select jacks that withstand the machine weight

and set them up as shown below.

BFront Wheels (with 4-wheel drive)

Front tread width can be adjusted as shown with the
standard equipped tires.
To change the tread width

1. Remove the wheel rim and disk mounting bolts.

2. Change the position of the rim and tire to the desired
position, and tighten the bolts.

3. Adjust the toe-in [2 to 8mm (0.1 to 0.3 in.)]
See "Adjusting Toe-in" in "EVERY 200 HOURS" in
"PERIODIC SERVICE" section.

(1) Jack points

A Always attach wheels as shown in the drawing.
A If not attached as illustrated, transmission parts may

be damaged.

A When re-fitting or adjusting a wheel, tighten the bolts

to the following torques then recheck after driving the
tractor 200m (200 yards) and 10 times of shuttle
movement by 5 m (5 yards), and thereafter according
to service interval. (See "MAINTENANCE" section.)

55TIRES, WHEELS AND BALLAST

To avoid personal injury or death:
A Before jacking up the tractor, park it on a firm

and level ground and chock the rear wheels.

A Fix the front axle to keep it from swinging.
A Select jacks that withstand the machine weight

and set them up as shown below.

(1) 260 to 304 N-m (26.5 to 31 kgf-m) (192 to 224 ft-lbs)
(2) [8.3-24] 244 N-m (24.9 kgf-m) (180 ft-lbs)
[9.5-22] 260 to 304 N-m (26.5 to 31 kgf-m) (192 to 224 ft-lbs)

A Wheels with beveled or tapered holes: Use the

tapered side of lug nut.

(1) Jack points

TIRES, WHEELS AND BALLAST56

BRear Wheels

Rear tread width can be adjusted as shown with the
standard equipped tires.
To change the tread width

1. Remove the wheel rim and / or disk mounting bolts.

2. Change the position of the rim and / or disk (right and
left) to the desired position, and tighten the bolts.

A Always attach wheels as shown in the drawing.
A If not attached as illustrated, transmission parts may

be damaged.

A When re-fitting or adjusting a wheel, tighten the bolts

to the following torques then recheck after driving the
tractor 200m (200 yards) and 10 times of shuttle
movement by 5 m (5 yards), and thereafter according
to service interval. (See "MAINTENANCE" section.)

(1) 260 to 304 N-m (26.5 to 31.0 kgf-m) (191.8 to 224.2 ft-lbs)
(2) [Steel disk] 244 N-m (24.9 kgf-m) (180 ft-lbs)

To avoid personal injury or death:
A Before jacking up the tractor, park it on a firm

and level ground and chock the front wheels.

A Fix the front axle to keep it from swinging.
A Select a jack that withstands the machine

weight and set it up as shown below.

(1) Jack point

57TIRES, WHEELS AND BALLAST

BALLAST

To avoid personal injury or death:
A Additional ballast will be needed for

transporting heavy implements. When the
implement is raised, drive slowly over rough
ground, regardless of how much ballast is
used.

A Do not fill the front wheels with liquid to

maintain steering control.

BFront Ballast

Add weights if needed for stability (2WD. 4WD models)
and improve traction (4WD model). Heavy pulling and
heavy rear mounted implements tend to lift front wheels.
Add enough ballast to maintain steering control and
prevent tip over. Remove weight when no longer needed.

C Front End Weights (option)

The front end weights can be attached to the bumper.
See your implement operator's manual for required
number of weights or consult your local KUBOTA Dealer
to use.

(1) Front end weights
(2) Bumper

A Do not overload tires.
A Add no more weight than indicated in chart.
A Do not attach the front bumper when the front loader

is attached.

Maximum weight

47 kg x 8 pieces

(830 lbs.)

TIRES, WHEELS AND BALLAST58

BRear Ballast

Add weight to rear wheels if needed to improve traction or
for stability. The amount of rear ballast should be matched
to job and the ballast should be removed when it is not
needed.
The weight should be added to the tractor in the form of
liquid ballast, rear wheel weights or a combination of both.

C Cast Iron Disk (option)

The cast iron rear wheel disk may be utilized to provide
additional rear weight.

Tire size Cast Iron Disk

14.9-28

C Rear Wheel Weights (option)

The rear wheel weights can be attached to the rear wheel.
See your implement operator's manual for required
number of weights or consult your local KUBOTA Dealer
to use.

158 kg x 2 Pieces

(700 lbs.)

C Liquid Ballast in Rear Tires

Water and calcium chloride solution provides safe
economical ballast. Used properly, it will not damage tires,
tubes or rims. The addition of calcium chloride is
recommended to prevent the water from freezing. Use of
this method of weighting the wheels has the full approval
of the tire companies. See your tire dealer for this service.

Liquid weight per tire (75 Percent filled) kg (lbs.)

Tire sizes 14.9-28 16.9-28

Slush free at

-10 (-14 )
Solid at -30
(-22 ) [Approx.
1 kg (2 lbs.)
CaCl per 4 L
(1 gal.) of water]

Slush free at

-24 (-11 )
Solid at -47
(-53 ) [Approx.

1.5 kg (3.5 lbs.)
CaCl per 4 L
(1 gal.) of water]

Slush free at

-47 (-53 )
Solid at -52
(-62 ) [Approx.

2.25 kg (5 lbs.)
CaCl per 4 L
(1 gal.) of water]

230

(570)

247

(545)

260

(574)

295

(651)

317

(699)

339

(747)

21.5L-

16.1

--- ---

290

(639)

308

(680)

16.9-

24,R4

280

(616)

296

(654)

(1) Rear wheel weights

A Do not overload tires.
A Add no more weight than indicated in chart.

73 kg x 2 pieces (320 lbs.)

Rear wheel weight

47 kg x 3 pieces (310 lbs.)

A Do not fill tires with water or solution more than 75% of

full capacity (to the valve stem level).

(1) Air
(2) Water

(A) Correct-75% Air compresses like a cushion
(B) Incorrect-100% Full Water can not be compressed

MAINTENANCE

SERVICE INTERVALS

59MAINTENANCE

No. Items

1 Engine start system Check

2 Wheel bolt torque Check

3 Tie-rod dust cover Check

4 Battery condition Check

5Greasing ---

6 Fan belt Adjust

7 Brake Pedal Adjust

Air

8

cleaner
element

9 Fuel line

10 Toe-in Adjust

11 Fuel tank water Drain

Power steering oil

12

line

Radiator hose and

13

clamp

14 Intake air line

15 Hydraulic oil filter Replace

16 Engine oil Change

17 Engine oil filter Replace

Primary
element

Secondary
element

Clean

Replace

Replace

Check

Replace

Check

Replace

Check

Replace

Check

Replace

Indication on hour meter

50 100 150 200 250 300 350 400 450 500 550 600 650 700

Interval

every
50 Hr

every
50 Hr

every
50 Hr

every

100 Hr

every

100 Hr

every

100 Hr

every

100 Hr

every

100 Hr

every
1 year

every
1 year

every

100 Hr

every

2 years

every

200 Hr

every

200 Hr

every

200 Hr

every

2 years

every

200 Hr

every

2 years

every

200 Hr

every

2 years

every

300 Hr

every

400 Hr

every

400 Hr

Ref.

page

68

69

70 *4

73 *5

70

72

73

71 *1

83 *2

83

72

84 *4

76

77

76

84 *4

75

84

75

84

77

78

79

*3
*4

60 MAINTENANCE

No. Items

18 Fuel filter Replace

19 Water separator Clean

Greasing (2WD front

20

wheel hub)

21 Transmission fluid Change

Front differential case

22

oil

Front axle gear case

23

oil

24 Front axle pivot Adjust

Engine valve

25

clearance

Fuel injector nozzle

26

tip

27 Oil separator element Replace

28 EGR cooler

29 EGR system

30 Turbo charger Check

31 Supply pump Check

32 DPF muffler Clean

33 Exhaust manifold Check

34 DPF related pipe Check

35 EGR pipe Check

36 Cooling system Flush

37 Coolant Change

Oil separator related

38

rubber pipe

PCV (Positive
Crankcase

39

Ventilation) valve
hose

DPF related rubber

40

pipe

EGR cooler rubber

41

pipe

42 Boost sensor hose Replace

---

Change

Change

Adjust

Clean

Check
Clean

Check
Clean

Replace

Replace

Replace

Replace

Indication on hour meter

50 100 150 200 250 300 350 400 450 500 550 600 650 700

Interval

every

400 Hr

every

400 Hr

every

400 Hr

every

600 Hr

every

600 Hr

every

600 Hr

every

600 Hr

every

800 Hr

every

1500 Hr

every

1500 Hr

every

1500 Hr

every

3000 Hr

every

3000 Hr

every

3000 Hr

every

3000 Hr

every
1 year

every
1 year

every
1 year

every

2 years

every

2 years

every

2 years

every

2 years

every

2 years

every

2 years

every

2 years

Ref.

page

79

79

80

80

81

81

82

82 *4

82 *4 @

82 @

82 *4 @

82 *4 @

82 *4 @

82 *4

83 *4 @

83 *4

83 *4

83 *4

83

84

84 *4

84 *4

84 *4

84 *4

85 *4

61MAINTENANCE

No. Items

43 Fuel system Bleed

44 Clutch housing water Drain 85

45 Fuse Replace 85

46 Light bulb Replace 87

50 100 150 200 250 300 350 400 450 500 550 600 650 700

Indication on hour meter

Interval

Service

required

Ref.

page

85

as

A The jobs indicated by must be done after the first 50 hours of operation.
*1 Air cleaner should be cleaned more often in dusty conditions than in normal conditions.
*2 Every year or every 6 times of cleaning.
*3 Replace only if necessary.

*4 Consult your local KUBOTA Dealer for this service.
*5 When the battery is used for less than 100 hours per year, check the battery condition by reading the indicator annually.
A The items listed above (@ marked) are registered as emission related critical parts by KUBOTA in the U.S.EPA nonroad

emission regulation. As the engine owner, you are responsible for the performance of the required maintenance on the
engine according to the above instruction.
Please see Warranty Statement in detail.

62 MAINTENANCE

LUBRICANTS, FUEL AND COOLANT

No. Locations Capacities Lubricants

1 Fuel

2Coolant

Engine crankcase

3

(with filter)

4 Transmission case

Front differential

5

case [4WD]

Front axle gear

6

case [4WD]

Greasing No. of greasing points Capacity Type of grease

Top link 2

Lift rod 1

Front axle gear
case support [4WD]

7

Front axle support 2

Front wheel hub
[2WD]

Knuckle shaft
[2WD]

Battery terminal 2 A small amount

(Recovery tank: 1.0 L (1.1 U.S.qts.))

67 L

(17.7 U.S.gals.)

8 L (8.5 U.S.qts.)

7.2 L

(7.6 U.S.qts.)

48 L

(50.7 U.S.qts.)

6.5 L

(6.9 U.S.qts.)

3.0 L

(3.2 U.S.qts.)

2

2

2

No.2-D S15 diesel fuel
No.1-D S15 diesel fuel if temperature is below -10 (14 )

Fresh clean soft water with anti-freeze

Engine oil:

API Service Classification

Above 25 (77 )

-10 to 25 (14 to 77 )

Below -10 (14 ) SAE10W-30

KUBOTA SUPER UDT2 fluid

KUBOTA SUPER UDT2 fluid or SAE 80 - SAE 90 gear oil

Until grease overflows.

CJ-4
[External DPF type engine]

SAE30,
SAE10W-30 or 15W-40

SAE20,
SAE10W-30 or 15W-40

Multipurpose Grease

NLGI-2 OR

NLGI-1(GC-LB)

The product name of KUBOTA genuine UDT fluid may be different from that in the Operator’s Manual depending on
countries or territories. Consult your local KUBOTA Dealer for further details.

C Engine Oil:

A Oil used in the engine should have an American Petroleum Institute (API) service classification and Proper SAE

Engine Oil according to the ambient temperatures as shown above:

A Refer to the following table for the suitable API classification engine oil according to the engine type (with DPF

(Diesel Particulate Filter) type engines) and the fuel.

63MAINTENANCE

Fuel used

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

C Fuel:

A Use the ultra low sulfur diesel fuel only [below 0.0015% (15 ppm)] for these engines.
A Cetane number of 45 minimum. Cetane number greater than 50 is preferred, especially for temperatures below

-20 (-4 ) or elevations above 1500 m (5000 ft).

A Diesel fuels specified to EN 590 or ASTM D975 are recommended.
A No.2-D is a distillate fuel of lower volatility for engines in industrial and heavy mobile service. (SAE J313 JUN87)

C Transmission Oil:

*KUBOTA Super UDT-2: For an enhanced ownership experience, we highly recommend Super UDT-2 to be used
instead of standard hydraulic/transmission fluid.
Super UDT-2 is a proprietary KUBOTA formulation that deliveries superior performance and protection in all operating
conditions.
Regular UDT is also permitted for use in this machine.

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

Engine oil classification (API classification)

Oil class for engines with DPF

CJ-4

64 PERIODIC SERVICE

PERIODIC SERVICE

A To close the hood, push the hood into position using

To avoid personal injury or death:
A Do not work under any hydraulically supported

devices. They can settle, suddenly leak down,
or be accidentally lowered. If necessary to work
under tractor or any machine elements for
servicing or adjustment, securely support them
with stands or suitable blocking beforehand.

HOW TO OPEN THE HOOD

To avoid personal injury or death from contact
with moving parts;
A Never open the hood while the engine is

running.

A Do not touch muffler or exhaust pipes while

they are hot; Severe burns could result.

A Hold the hood with other hand while unlocking

release lever.

BHood

To open the hood, hold the hood and pull the release lever
and open the hood.

both hands.

DAILY CHECK

For your own safety and maximum service life of the
machine, make a thorough daily inspection before
operating the machine to start the engine.

To avoid personal injury or death:
Take the following precautions when checking the
tractor.

A Park the machine on firm and level ground.
A Set the parking brake.
A Lower the implement to the ground.
A All residual pressure of the hydraulic system

A Stop the engine and remove the key.

released.

(1) Release lever
(2) Hood

BWalk Around Inspection

Look around and under the tractor for such items as loose
bolts, trash build-up, oil or coolant leaks, broken or worn
parts.

(A) "PULL"

65PERIODIC SERVICE

BChecking and Refueling

To avoid personal injury or death:

A Do not smoke while refueling.
A Be sure to stop the engine before refueling.

1. Check the amount of fuel by fuel gauge.

2. When the fuel warning indicator lights up, it is time to
add fuel.

(1) Fuel tank cap

BChecking Water Separator

1. As water is collected in the water separator, the red
float is raised.

2. When the red float has reached the white line, close
the fuel cock, loosen the retainer ring, take out the cup,
and clean the cup. Be careful not to break the element.

3. Place the cup back into position. Bleed the fuel
system.
(See "SERVICE AS REQUIRED" in "PERIODIC
SERVICE" section.)

(1) Red float
(2) Fuel cock
(3) Retainer ring
(4) Cup

(A) "WHITE LINE"

Fuel tank capacity 67 L (17.7 U.S.gals.)

A Be sure to use Ultra Low Sulfur Fuel (S15).
A Do not permit dirt or trash to get into the fuel system.
A Be careful not to let the fuel tank become empty,

otherwise air will enter the fuel system, necessitating
bleeding before next engine start.

A If the engine runs out of fuel and stalls, the engine

components may be damaged.

A Be careful not to spill during refueling. If a spill should

occur, wipe it off at once, or it may cause a fire.

A To prevent condensation (water) accumulation in the

fuel tank, fill the tank before parking overnight.

A If water is drawn through to the fuel pump, extensive

damage will occur.

PERIODIC SERVICE66

BChecking Engine Oil Level

To avoid personal injury or death:
A Be sure to stop the engine before checking the

oil level.

1. Park the machine on a flat surface.

2. Check engine oil before starting the engine or 5
minutes or more after the engine has stopped.

3. To check the oil level, draw out the dipstick, wipe it
clean, replace it, and draw it out again. Check to see
that the oil level lies between the 2 notches.
If the level is too low, add new oil to the prescribed
level at the oil inlet.
(See "LUBRICANTS" in "MAINTENANCE" section.)

A When using an oil of different maker or viscosity from

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

A If oil level is low, do not run engine.

A At times a small amount of fuel, which is used to

regenerate the DPF, may get mixed with the engine oil
and the engine oil may increase in volume.

BChecking Transmission Fluid Level

1. Park the machine on a flat surface, lower the
implement and shut off engine.

2. To check the oil level, draw out the dipstick, wipe it
clean, replace it, and draw it out again. Check to see
that the oil level lies between the 2 notches.
If the level is too low, add new oil to the prescribed
level at the oil inlet.
(See "LUBRICANTS" in "MAINTENANCE" section.)

(1) Oil inlet
(2) Dipstick

(A) Oil level is acceptable within this range.

(1) Dipstick
(2) Oil inlet

(A) Oil level is acceptable within this range.

A If oil level is low, do not run engine.

BChecking Coolant Level

To avoid personal injury or death:
A Do not remove radiator cap while coolant is

hot. When cool, slowly rotate cap to the first
stop and allow sufficient time for excess
pressure to escape before removing the cap
completely.

1. Check to see that the coolant level is between the
"FULL" and "LOW" marks of recovery tank.

2. When the coolant level drops due to evaporation, add
soft water only up to the full level.
In case of leakage, add anti-freeze and soft water in
the specified mixing ratio up to the full level.
(See "Flushing Cooling System and Changing
Coolant" in "EVERY 2 YEARS" in "PERIODIC
SERVICE" section.)

3. When the coolant level is lower than "LOW" mark of
recovery tank, remove the radiator cap and check to
see that the coolant level is just below the port. If level
is low, add coolant.

67PERIODIC SERVICE

BCleaning Evacuator Valve

Open the evacuator valve to get rid of large particles of
dust and dirt.

(1) Evacuator valve

BCleaning Grill, Radiator Screen, Oil Cooler

and Battery Mount

(1) Recovery tank (A) "FULL"

(B) "LOW"

A If the radiator cap has to be removed, follow the

caution above and securely retighten the cap.

A Use clean, fresh soft water and anti-freeze to fill the

radiator.

A If coolant should leak, consult your local KUBOTA

Dealer.

To avoid personal injury or death:
A Be sure to stop the engine before removing the

screen.

A Before checking or cleaning the radiator

screen, stop the engine and wait long enough
until it is cooled down.

C Cleaning

1. Check front grill to be sure it is clean from debris.

2. Detach the radiator screen and remove all foreign
materials.

3. Check oil cooler and battery mount to be sure they are
clean from debris.

(1) Radiator screen
(2) Oil cooler
(3) Battery mount

PERIODIC SERVICE68

A Grill and screen must be clean from debris to prevent

engine from overheating and to allow good air intake
for air cleaner.

BChecking DPF Muffler

To avoid personal injury or death:
A Before checking or cleaning the DPF muffler,

stop the engine and wait long enough until it is
cooled down.

Check the DPF muffler and its surroundings for build-up
of anything flammable. Otherwise a fire may result.

BChecking Head Light, Turn Signal / Hazard

Light etc.

1. Inspect the lights for broken bulbs and lenses.

2. Replace if broken.

BChecking Seat Belt and ROPS

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

2. Replace if damaged.

BChecking Movable Parts

If any of the movable parts, such as levers and pedals, is
not smoothly moved because of rust or sticky material, do
not attempt to force it into motion.
In the above case, remove the rust or the sticky material,
and apply oil or grease on the relevant spot.
Otherwise, the machine may get damaged.

EVERY 50 HOURS

BChecking Engine Start System

(1) DPF muffler

BChecking Brake Pedal

To avoid personal injury or death:
A Be sure brake pedals have equal adjustment

when using locked together. Incorrect or
unequal brake pedal adjustment can cause the
tractor to swerve or roll-over.

1. Inspect the brake pedals for free travel, and smooth
operation.

2. Adjust if incorrect measurement is found:
(See "Adjusting Brake Pedal" in "EVERY 100 HOURS"
in "PERIODIC SERVICE" section.)

BChecking Gauges, Meter and Easy

Checker(TM)

1. Inspect the instrument panel for broken gauge(s),
meter(s) and Easy Checker(TM) lamps.

2. Replace if broken.

To avoid personal injury or death:
A Do not allow anyone near the tractor while

testing.

A If the tractor does not pass the test, do not

operate the tractor.

C Preparation before testing.

1. Place all control levers in the "NEUTRAL" position.

2. Set the parking brake and stop the engine.

C Test: Switch for the shuttle shift lever.

1. Follow the instruction of "PARKING THE TRACTOR".
(See "PARKING THE TRACTOR" in "SAFE
OPERATION" section.)

2. Sit on the operator's seat.

3. Shift the shuttle shift lever to the forward or reverse
position.

4. Depress the clutch pedal fully.

5. Disengage the PTO clutch control switch or lever.

6. Turn the key to "START" position.

7. The engine must not crank.

8. If it cranks, consult your local KUBOTA Dealer for this
service.

C Test: Switch for the PTO clutch control switch or

lever.

1. Follow the instruction of "PARKING THE TRACTOR".
(See "PARKING THE TRACTOR" in "SAFE
OPERATION" section.)

2. Sit on the operator's seat.

3. Engage the PTO clutch control switch or lever.

4. Depress the clutch pedal fully.

5. Shift the shuttle shift lever to the neutral position.

6. Turn the key to "START" position.

7. The engine must not crank.

8. If it cranks, consult your local KUBOTA Dealer for this
service.

C Test: Checking Operator Presence Control

(O.P.C.) System.

1. Follow the instruction of "PARKING THE TRACTOR".
(See "PARKING THE TRACTOR" in "SAFE
OPERATION" section.)

2. Make sure the PTO drive shaft is disconnected from
the tractor.

3. Sit on the operator's seat.

4. Start the engine.

5. Engage the PTO clutch control switch or lever. The
PTO should begin to rotate. Disengage the PTO clutch
control switch or lever.

6. While lifting yourself from the seat, engage the PTO
clutch control switch or lever.
(1) The PTO should begin to rotate and a buzzer

should sound.
(2) Disengage the PTO clutch control switch or lever.
(3) If the buzzer does not sound, shut off the engine

and consult your local KUBOTA Dealer for

immediate servicing of the PTO OPC.

7. If the PTO OPC is operating properly, shut off the
engine, and reconnect the implement drive shaft to the
PTO. Restart the engine per the available instructions.

69PERIODIC SERVICE

(1) Shuttle shift lever
(2) Clutch pedal
(3) PTO clutch control lever

BChecking Wheel Bolt Torque

To avoid personal injury or death:
A Never operate tractor with a loose rim, wheel,

or axle.

A Any time bolts and nuts are loosened, retighten

to specified torque.

A Check all bolts and nuts frequently and keep

them tight.

Check wheel bolts and nuts regularly especially when
new. If they are loose, tighten them as follows.

To avoid personal injury or death:
A Before checking the PTO OPC, make sure that

the PTO drive shaft should be disconnected
from the tractor.

A If the buzzer does not sound during the PTO

OPC check procedure, shut off engine and
consult your local KUBOTA Dealer for
immediate servicing of the PTO OPC.

A The unit should not be operated until servicing

is completed.

PERIODIC SERVICE70

N-m (kgf-m) [ft-lbs.]

(1) (2) (3) (4)

168 to 196

2WD

4WD

(17.1 to 20.0)

[124 to 145]

260 to 304

(26.5 to 31.0)

[192 to 224]

---

244

(24.9)

[180]

260 to 304

(26.5 to 31.0)

[192 to 224]

244

(24.9)

[180]

BChecking Tie-rod Dust Cover

1. Check to see that dust covers are not damaged.

2. If dust covers are damaged, consult local KUBOTA
Dealer for this service.

EVERY 100 HOURS

BLubricating Grease Fittings

Apply a small amount of multipurpose grease to the
following points every 100 hours:
If you operated the machine in extremely wet and muddy
conditions, lubricate grease fittings more often.

(1) Grease fitting (Knuckle shaft) [RH, LH]

(1) Dust cover

A If dust covers are cracked, water and dust invade into

tie-rod and it will be early wear.

(1) Grease fitting (Front axle support)

(1) Grease fitting (Front axle support)

(1) Grease fitting (Front axle gear case support) [RH, LH]

71PERIODIC SERVICE

BCleaning Air Cleaner Primary Element

1. Remove the air cleaner cover and primary element.

2. Clean the primary element:
(1) When dry dust adheres to the element, blow

compressed air from the inside, turning the
element. Pressure of compressed air must be
under 205 kPa (2.1 kgf/cm , 30 psi).

(2) When carbon or oil adheres to the element, soak

the element in detergent for 15 minutes then wash
it several times in water, rinse with clean water
and dry it naturally. After element is fully dried,
inspect inside of the element with a light and
check if it is damaged or not.

3. Replace air cleaner primary element:
Once yearly or after every sixth cleaning, whichever
comes first.

A Check to see if the evacuator valve is blocked with

dust.

(1) Grease fitting (Top link)
(2) Grease fitting (Lifting rod)

(1) Battery terminals

(1) Secondary (safety) element
(2) Primary element
(3) Evacuator valve
(4) Cover

A The air cleaner uses a dry element, never apply oil.
A Do not run the engine with filter element removed.
A Be sure to refit the cover with the arrow (on the rear

of cover) upright. If the cover is improperly fitted,
evacuator valve will not function and dust will adhere
to the element.

A Do not touch the secondary element except in cases

where replacing is required.
(See "Replacing Air Cleaner Secondary Element" in
"EVERY 1 YEAR" in "PERIODIC SERVICE" section.)

C Evacuator Valve

Open the evacuator valve once a week under ordinary
conditions - or daily when used in a dusty place - to get rid
of large particles of dust and dirt.

PERIODIC SERVICE72

BAdjusting Fan Belt Tension

To avoid personal injury or death:
A Be sure to stop the engine before checking belt

tension.

BChecking Fuel Line

1. Check to see that all lines and hose clamps are tight
and not damaged.

2. If hoses and clamps are found worn or damaged,
replace or repair them at once.

Proper fan belt
tension

1. Stop the engine and remove the key.

2. Apply moderate thumb pressure to belt between
pulleys.

3. If tension is incorrect, loosen the alternator mounting
bolts and, using a lever placed between the alternator
and the engine block, pull the alternator out until the
deflection of the belt falls within acceptable limits.

4. Replace fan belt if it is damaged.

A deflection is 7 to 9 mm (0.28 to 0.35
in.) when the belt is pressed (98 N [10
kgf, 22 lbs.]) in the middle of the span.

(1) Bolt (A) Check the belt tension

(B) To tighten

(1) Fuel lines
(2) Clamp bands

A If the fuel line is removed, be sure to properly bleed the

fuel system.
(See "Bleeding Fuel System" in "SERVICE AS
REQUIRED" in "PERIODIC SERVICE" section.)

73PERIODIC SERVICE

BAdjusting Brake Pedal

To avoid personal injury or death:
A Stop the engine and chock the wheels before

checking brake pedal.

40 to 45 mm (1.6 to 1.8 in.) on

Proper brake pedal
free travel

1. Release the parking brake.

2. Slightly depress the brake pedals and measure free
travel at the top of pedal stroke.

3. If adjustment is needed, loosen the lock nut and turn
the turnbuckle to adjust the rod length within
acceptable limits.

4. Retighten the lock nut.

the pedal

Keep the free travel in the right
and left brake pedals equal.

BChecking Battery Condition

To avoid the possibility of battery explosion:
For the refillable type battery, follow the
instructions below.
A Do not use or charge the refillable type battery

if the fluid 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 fluid level regularly and
add distilled water as required so that the fluid
level is between the UPPER and LOWER levels.

To avoid personal injury or death:
A Never remove the battery cap while the engine

is running.

A Keep electrolyte away from eyes, hands and

clothes. If you are spattered with it, wash it
away completely with water immediately and
get medical attention.

A Keep open sparks and flames away from the

battery at all times. Hydrogen gas mixed with
oxygen becomes very explosive.

A Wear eye protection and rubber gloves when

working around battery.

(1) Lock nut
(2) Turnbuckle

(A) "FREE TRAVEL"

The factory-installed battery is of non-refillable
type. If the indicator turns white, do not charge the
battery but replace it with new one.

Mishandling the battery shortens the service life and adds
to maintenance costs.
The original battery is maintenance free, but needs some
servicing.
If the battery is weak, the engine will be difficult to start
and the lights will be dim. It is important to check the
battery periodically.

PERIODIC SERVICE74

(1) Battery
(2) Indicator

C How to read the indicator

Check the battery condition by reading the indicator.

State of indicator display

Green

Specific gravity of electrolyte and quality of
electrolyte are both in good condition.

Black Needs charging battery.

White Needs replacing battery.

C Battery Charging

To avoid personal injury or death:
A When the battery is being activated, hydrogen

and oxygen gases in the battery are extremely
explosive. Keep open sparks and flames away
from the battery at all times, especially when
charging the battery.

A When charging the battery, ensure the vent

caps are securely in place. (if equipped)

A When disconnecting the cable from the battery,

start with the negative terminal first.
When connecting the cable to the battery, start
with the positive terminal first.

A Never check battery charge by placing a metal

object across the posts.
Use a voltmeter or hydrometer.

(1) Battery

1. 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.

2. A boost charge is only for emergencies. It will partially
charge the battery at a high 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 will shorten the battery's service life.

3. The battery is charged if the indicator display turns
green from black.

4. When exchanging an old battery for a new one, use
battery of equal specification shown in table 1.

Table 1

Battery

TYPE

80D26R 12 133 582 6.5

volts

(V)

Reserve
capacity

(min)

CCA

(SAE)

(A)

Normal

Charging

Rate (A)

CCA : Cold Cranking Ampere

C Direction for Storage

1. When storing the tractor for long periods of time,
remove the battery from tractor, adjust the electrolyte
to the proper level and store in a dry place out of direct
sunlight.

2. The battery self-discharges while it is stored.
Recharge it once every 3 months in hot seasons and
once every 6 months in cold seasons.

75PERIODIC SERVICE

EVERY 200 HOURS

BChecking Radiator Hose and Clamp

Check to see if radiator hoses are properly fixed every 200
hours of operation or 6 months, whichever comes first.

1. If hose clamps are loose or water leaks, tighten bands
securely.

2. Replace hoses and tighten hose clamps securely, if
radiator hoses are swollen, hardened or cracked.

Replace hoses and hose clamps every 2 years or earlier
if checked and found that hoses are swollen, hardened or
cracked.

C Precaution at Overheating

Take the following actions in the event the coolant
temperature is nearly or more than the boiling point, what
is called "Overheating"

1. Park the tractor 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 blows out.

4. Check that there are no dangers such as burns. Get rid
of the causes of overheating according to the manual,
see "TROUBLESHOOTING" section, and then, start
again the engine.

BChecking Intake Air Line

1. Check to see that hoses and hose clamps are tight and
not damaged.

2. If hoses and clamps are found worn or damaged,
replace or repair them at once.

(1) Radiator hoses
(2) Hose clamps

(1) Hose
(2) Hose clamps

PERIODIC SERVICE76

BChecking Power Steering Line

1. Check to see that all lines and hose clamps are tight
and not damaged.

2. If hoses and clamps are found worn or damaged,
replace or repair them at once.

(1) Power steering pressure hoses

1. Park tractor on a flat place.

2. Turn steering wheel so front wheels are in the straight
ahead position.

3. Lower the implement, lock the park brake and stop the
engine.

4. Measure distance between tire beads at front of tire, at
hub height.

5. Measure distance between tire beads at rear of tire, at
hub height.

6. Front distance should be shorter than rear distance.
If not, adjust tie rod length.

BAdjusting Toe-in

Proper toe-in

4WD 2 to 8 mm (0.08 to 0.31 in.)

2WD 1 to 5 mm (0.04 to 0.2 in.)

(A) Wheel - to - wheel distance at rear
(B) Wheel - to - wheel distance at front
(C) "FRONT"

C Adjusting procedure [4WD]

1. Detach the snap ring.

2. Loosen the tie-rod nut.

3. Turn the tie-rod joint to adjust the rod length until the
proper toe-in measurement is obtained.

4. Retighten the tie-rod nut.

5. Attach the snap ring of the tie-rod joint.

(1) Snap ring
(2) Tie-rod nut
(167 to 196 N-m, 17 to 20 kgf-m, 123.2 to 144.6 ft-lbs)
(3) Tie-rod joint

77PERIODIC SERVICE

C Adjusting procedure [2WD]

1. Detach the snap ring.

2. Loosen the tie-rod nut.

3. Turn the tie-rod joint to adjust the rod length until the
proper toe-in measurement is obtained.

4. Retighten the tie-rod nut.

5. Attach the snap ring of the tie-rod joint.

(1) Snap ring
(2) Tie-rod nut
(167 to 196 N-m, 17 to 20 kgf-m, 123.2 to 144.6 ft-lbs)
(3) Tie-rod joint

EVERY 300 HOURS

BReplacing Hydraulic Oil Filter

C Cleaning Magnetic Filter

To avoid personal injury or death:
A Be sure to stop the engine before changing the

oil filter cartridge.

A Allow engine to cool down sufficiently, oil can

be hot and can burn.

1. Remove the drain plug at the bottom of the
transmission case and drain the oil completely into an
oil pan.

2. After draining reinstall the drain plug.

BDraining Fuel Tank Water

Loosen the drain plug at the bottom of the fuel tank to let
sediments, impurities and water out of the tank. Finally
tighten up the plug.

(1) Fuel Tank (Left)
(2) Drain plug

A If the fuel contains impurities, such as water, drain the

fuel tank at shorter intervals.

A Drain the fuel tank before operating the tractor after a

long period of storage.

(1) Drain plug

3. Remove the 2 oil filters.

4. Wipe off metal filings from the magnetic filter with a
clean rag.

(1) Hydraulic oil filter
(2) Magnetic filter (Wipe off metal filings)

5. Put a film of clean transmission oil on the rubber seal
of the new filters.

PERIODIC SERVICE78

6. Tighten the filter quickly until it contacts the mounting
surface.
Tighten filter by hand an additional 1/2 turn only.

7. After the new filters have been replaced, fill the
transmission oil up to the upper notch on the dipstick.

Oil capacity with filter 7.2 L (7.6 U.S.qts.)

A Use DPF-compatible oil (CJ-4) for the engine.

(1) Dipstick
(2) Oil inlet

8. After running the engine for a few minutes, stop the
engine and check the oil level again, add oil to the
prescribed level.

9. Make sure that the transmission fluid doesn't leak pass
the seal on the filters.

A To prevent serious damage to the hydraulic system,

use only a KUBOTA genuine filter.

A Do not operate the tractor immediately after changing

the transmission fluid.
Run the engine at medium speed for a few minutes to
prevent damage to the transmission.

(A) Oil level is acceptable within this range

EVERY 400 HOURS

BChanging Engine Oil

To avoid personal injury or death:
A Be sure to stop the engine before changing the

oil.

A Allow engine to cool down sufficiently, oil can

be hot and can burn.

(1) Oil inlet
(2) Dipstick

(A) Oil level is acceptable within this range

1. To drain the used oil, remove the drain plug at the
bottom of the engine and drain the oil completely into
the oil pan.
All the used oil can be drained out easily when the
engine is still warm.

2. After draining reinstall the drain plug.

3. Fill with the new oil up to the upper notch on the
dipstick.
(See "LUBRICANTS" in "MAINTENANCE" section.)