wsm L3301, L3901, L4701 Workshop Manual

WORKSHOP MANUAL

KiSC issued 09, 2016 A

TRACTOR

L3301,L3901,L4701

TO THE READER

KiSC issued 09, 2016 A

This Workshop Manual tells the servicing personnel about the mechanism, servicing and
maintenance of the L3301, L3901 and L4701. It contains 4 parts: "Information", "General",
"Mechanism" and "Servicing".

 Information

This section primarily contains information below.

• Safety First

• Safety Decal

• Specifications

• Dimensions

 General

This section primarily contains information below.

• Engine Identification

• Model Identification

• General Precautions

• Maintenance Check List

• Check and Maintenance

• Special Tools

 Mechanism

This section contains information on the structure and the function of the unit. Before you continue
with the subsequent sections, make sure that you read this section.

Refer to the latest version of Workshop Manual (Code No. 9Y021-01870 / 9Y021-18200) for the
diesel engine / tractor mechanism that this workshop manual does not include.

 Servicing

This section primarily contains information below.

• Troubleshooting

• Servicing Specifications

• Tightening Torques

• Checking, Disassembling and Servicing
All illustrations, photographs and specifications contained in this manual are of the newest

information available at the time of publication.

KUBOTA reserves the right to change all information at any time without notice.
Since this manual includes many models, information or illustrations and photographs can show

more than one model.

February, 2014

© KUBOTA Corporation 2014

Record of Revisions

KiSC issued 09, 2016 A

For pdf, use search function {Search word} to find all the revised locations.

Last digit

of the

Code No.

Issue

month

Main Revised Point and Corrective Measures {Search word}

1 2016.09 Maintenance interval was introduced. G-15

CCV heater equipped model was introduced.
Assembling and disassembling process in ENGINE was revised and
some wiring diagram, electrical circuit and components are added in
ELECTRICAL SYSTEM.

Reference

Page

to

G-77

1-S1,
1-S16,
1-S29,
1-S31,
1-S36,

2-S8,
2-S10,
2-S15,
2-S17,
3-S28,
3-S30,
3-S63,

9-M1,

9-M2,
9-S16,
9-S17,

9-S55

I INFORMATION

KiSC issued 09, 2016 A

INFORMATION

KiSC issued 09, 2016 A

CONTENTS

1. SAFETY FIRST ..............................................................................................................................I-1

2. SAFETY DECALS ..........................................................................................................................I-4

[1] L3301/L3901............................................................................................................................. I-4

[2] L4701........................................................................................................................................ I-7

3. SPECIFICATIONS........................................................................................................................I-10

[1] L3301/L3901........................................................................................................................... I-10

[2] L4701...................................................................................................................................... I-12

4. TRAVELING SPEEDS..................................................................................................................I-13

[1] L3301/L3901........................................................................................................................... I-13

[2] L4701...................................................................................................................................... I-14

5. DIMENSIONS...............................................................................................................................I-15

[1] L3301/L3901........................................................................................................................... I-15

[2] L4701...................................................................................................................................... I-16

L3301, L3901, L4701, WSM

SAFETY FIRST

DANGER

WARNING

CAUTION

IMPORTANT

NOTE

KiSC issued 09, 2016 A

INFORMATION

1. SAFETY FIRST

• This symbol, the industry's "Safe ty Alert Symbol", is us ed throughout this manual and o n 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 try to repair or use this
unit.

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

• Indicates a potentially hazardous situ ation which, if not av oided, could result in de ath 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.

WSM000001INI0001US1

BEFORE YOU START SERVICE

• Read all instructions and safety instructions in this
manual and on your machine safety decals.

• Clean the work area and machine.

• Park the machine on a stable and level ground, and
set the parking brake.

• Lower the implement to the ground.

• Stop the engine, then remove the key.

• Disconnect the battery negative cable.

• Hang a "DO NOT OPERATE" tag in the operator
station.

WSM000001INI0010US0

START SAFELY

• Do not do the procedures below wh en you start the
engine.
– short across starter terminals
– bypass the safety start switch

• Do not alter or remove any part of machine safety
system.

• Before you start the engine, make sure that all shift
levers are in neutral positions or in disengaged
positions.

• Do not start the engine when you stay on the ground.
Start the engine only from operator's seat.

WSM000001INI0015US0

I-1

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

INFORMATION

OPERATE SAFELY

• Do not use the machine after you consume alcohol
or medication or when you are tired.

• Put on applicable clothing and safety equipment.

• Use applicable tools only. Do not use alternative
tools or parts.

• When 2 or more persons do servicing, make sure
that you do it safely.

• Do not operate below the machine that only a jack
holds. Always use a safety stand to hold the
machine.

• Do not touch the hot parts or parts that turn when the
engine operates.

• Do not remove the radiator cap when the engine
operates, or immediately after it stops. If not, hot
water can spout out from the radiator. Only remove
the radiator cap when it is at a sufficiently low
temperature to touch with bare hands. Slowly loosen
the cap to release the pressure before you remove it
fully.

• Released fluid (fuel or hydraulic oil) under pressure
can cause damage to the skin and cause serious
injury. Release the pressure before you disconnect
hydraulic or fuel lines. Tighten all connections before
you apply the pressure.

• Do not open a fuel system under high pressure.
The fluid under high pressure that stays in fuel lines
can cause serious injury. Do not disconnect or repair
the fuel lines, sensors, or any other components
between the fuel pump and injectors on engines with
a common rail fuel system under high pressure.

• Put on an applicable ear protective device (earmuffs
or earplugs) to prevent injury against loud noises.

• Be careful about electric shock. The engine
generates a high voltage of more than DC100 V in
the ECU and is applied to the injector.

WSM000001INI0012US0

PREVENT A FIRE

• Fuel is very flammable and explosive under some
conditions. Do not smoke or let flam es or sparks in
your work area.

• To prevent sparks from an accidental short circuit,
always disconnect the battery negative cable first
and connect it last.

• The battery gas can cause an explosion. Keep the
sparks and open flame away from the top of battery,
especially when you charge the battery.

• Make sure that you do not spill fuel on the engine.

WSM000001INI0005US0

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L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

INFORMATION

KEEP A GOOD AIRFLOW IN THE WORK AREA

• If the engine is in operation, make sure that the area
has good airflow. Do not operate the engine in a
closed area. The exhaust gas contains poisonous
carbon monoxide.

WSM000001INI0006US0

DISCARD FLUIDS CORRECTLY

• Do not discard fluids on the ground, down the drain,
into a stream, pond, or lake. Obey related
environmental protection regulations when you
discard oil, fuel, coolant, electrolyte and other
dangerous waste.

WSM000001INI0007US0

PREVENT ACID BURNS

• Keep electrolyte away from your eyes, hands and
clothing. Sulfuric acid in battery electrolyte is
poisonous and it can burn your skin and clothing and
cause blindness. If you spill electrolyte on yourself,
clean yourself with water, and get medical aid
immediately.

WSM000001INI0008US0

PREPARE FOR EMERGENCIES

• Keep a first aid kit and fire exti nguisher ready at all
times.

• Keep the emergency contact telephone numbers
near your telephone at all times.

WSM000001INI0009US0

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L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

INFORMATION

2. SAFETY DECALS

The following safety decals are installed on the machine. If a decal becomes damaged, illegible or is not

on the machine, replace it. The decal part number is listed in the parts list.

WSM000001INI0013US0

[1] L3301/L3901

9Y1211012INI0001US0

I-4

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

INFORMATION

9Y1211012INI0002US0

I-5

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

INFORMATION

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.

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

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

9Y1211012INI0003US0

9Y1211012INI0004US0

I-6

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

[2] L4701

INFORMATION

9Y1211012INI0005US0

I-7

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

INFORMATION

9Y1211012INI0006US0

I-8

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

INFORMATION

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.

4. If a component with danger, warning and ca ution label(s) affixed is replaced with new part, make sure new label(s)

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

9Y1211012INI0007US0

is (are) attached in the same location(s) as the replace component.
outside edge.

9Y1211012INI0004US0

I-9

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

3. SPECIFICATIONS

[1] L3301/L3901

L3301 L3901

Model

PTO power* 20.7 kW (27.7 HP)

Model D1803-CR-E4
Type Direct injection, vertical, water-cooled, 4-cycle diesel
Number of cylinders 3
Bore and stroke 87 × 102.4 mm (3.4 × 4.0 in.)
Total displacement 1.826 L (111.4 cu.in.)

Engine

Capacities

Dimensions

Weight (with ROPS)

Traveling
system

Hydraulic unit

Engine gross power* 24.6 kW (33.0 HP) 28.0 kW (37.5 HP)
Engine net power* 23.4 kW (31.4 HP) 27.1 kW (36.3 HP)
Rated revolution 45.0 rps (2700 rpm)
Low idling revolution 15.0 rps (900 rpm)
Maximum torque 101.7 N·m (75.0 lbf·ft) 115.8 N·m (85.4 lbf·ft)
Battery [75D23R] 12 V, RC: 110 min, CCA: 580 A
Fuel tank 42.0 L (11.0 U.S.gals, 9.24 Imp.gals)
Engine crankcase (with filter) 6.7 L (7.1 U.S.qts, 5.9 Imp.qts)
Engine coolant 6.0 L (6.3 U.S.qts, 5.3Imp.qts)

Transmission case

Overall length (without 3p)
Overall width (min. tread) 1400 mm (55.1 in.)

Overall height (with ROPS) 2330 mm (91.7 in.)
Overall height

(Top of steering wheel)
Wheel base 1610 mm (63.3 in.)

Min. ground clearance

Tread

Tire
Industrial

(option)
Clutch Dry type single stage Dry type dual stage

Steering Integral type power steering

Transmission

Brake Wet disk type
Min. turning r

(with brake)
Hydraulic control system Position control
Pump capacity (main) 23.9 L/min (6.3 gals/min., 5.26 Imp.gals/min.)
Pump capacity (PS) 14.5 L/min (3.8 gals/min, 3.19 Imp.gals/min.)
Three point hitch Category 1

Max. lift force

System pressure 16.2 MPa (165 kgf/cm

Front
Rear 1115 mm (43.8 in.), 1195 mm (47.1 in.), 1290 mm (50.8 in.)

AG Front 5.00-15 7.2-16 5.00-15 7.2-16
AG Rear 11.2-24
Front – 27 × 8.50-15 – 27 × 8.50-15
Rear – 15-19.5R4 – 15-19.5R4

adius

At lift points 906 kg (1998 lbs)
24 in. behind

lift points

Manual Transmission HST Manual Transmission HST

2WD 4WD 4WD 2WD 4WD 4WD

28.0 L

(7.4 U.S.gals,

6.16 Imp.gals)
2810 mm

(110.6 in.)

345 mm

(13.6 in.)

1050 mm

(41.3 in.)

1160 kg

(2557 lbs)

Gear shift, 8 forward and

8 reverse

2.4 m

(7.9 feet)

28.5 L

(7.5 U.S.gals,

6.27 Imp.gals)

1240 kg

(2734 lbs)

19.5 kW

(26.2 HP)

23.5 L

(6.2 U.S.gals,

5.17 Imp.gals)

2740 mm (107.9 in.)

1475 mm (58.1 in.)

340 mm (13.4 in.)

1095 mm (43.1 in.)

1260 kg

(2778 lbs)

Hydrostatic

transmission,

3 range

speed

2.5 m (8.2 feet)

651 kg (1435 lbs)

23.9 kW (32.1 HP)

28.0 L

(7.4 U.S.gals,

6.16 Imp.gals)
2810 mm

(110.6 in.)

345 mm

(13.6 in.)

1050 mm

(41.3 in.)

1175 kg

(2590 lbs)

Gear shift, 8 forward and

8 reverse

2.4 m

(7.9 feet)

2

, 2349 psi)

28.5 L

(7.5 U.S.gals,

6.27 Imp.gals)

1255 kg

(2767 lbs)

INFORMATION

22.8 kW

(30.6 HP)

23.5 L

(6.2 U.S.gals,

5.17 Imp.gals)

2740 mm (107.9 in.)

340 mm (13.4 in.)

1095 mm (43.1 in.)

1260 kg

(2778 lbs)

Dry type

single stage

Hydrostatic

transmission,

3 range

spee

2.5 m (8.2 feet)

d

I-10

L3301, L3901, L4701, WSM

NOTE

KiSC issued 09, 2016 A

L3301 L3901

Model

Manual Transmission HST Manual Transmission HST

2WD 4WD 4WD 2WD 4WD 4WD

Rear PTO

Rear PTO Type

PTO

PTO / Engine speed

PTO shaft
size

Transmission driven with

overrunning

-1

540 min
2430 min

(rpm) /

-1

(rpm)

SAE 1-3/8, 6 splines

Live-continuous running PTO

-1

(rpm) /

-1

540 min

2580 min

540 min
2425 min

(rpm)

• *Manufacturer's estimate. The company reserve the right to change the specifications without notice.

INFORMATION

-1

(rpm) /

-1

(rpm)

9Y1211012INI0008US0

540 min

(rpm) /

2580 min

(rpm)

-1

-1

I-11

L3301, L3901, L4701, WSM

NOTE

KiSC issued 09, 2016 A

[2] L4701

Model

Model V2403-CR-E4
Type Direct injection, vertical, water-cooled, 4-cycle diesel
Number of cylinders 4
Total displacement 2.434 L (148.5 cu.in.)
Bore and stroke 87 × 102.4 mm (3.4 × 4.0 in.)

Engine

Capacities

Dimensions

Weight (with ROPS)

Traveling
system

Hydraulic unit

PTO

Rated revolution 2600 min
Low idling revolution 800 min
Net power* 33.4 kW (44.8 HP) / 2600 min
PTO power*

(factory observed)
Maximum torque: Gross 146.2 N·m (107.8 lbf·ft)
Battery capacity 12 V, RC: 120 min, CCA: 600 A
Fuel tank 51 L (13.5 U.S.gals, 11 Imp.gals)
Engine crankcase (with filter) 8.2 L (8.7 U.S.qts, 7.2 Imp.qts)
Engine coolant 6.5 L (6.9 U.S.qts, 5.7 Imp.qts)
Transmission case 40 L (10.6 U.S.gals, 8.8 Imp.gals)
Overall length (without 3p) 3120 mm (122.8 in.) 3035 mm (119.5 in.)
Overall width (min. tread) 1585 mm (62.4 in.)
Overall height (with ROPS) 2330 mm (91.7 in.)
Wheel base 1850 mm (72.8 in.) 1845 mm (72.6 in.)
Min. ground clearance 385 mm (15.2 in.)

Tread

Standard tire
size

Clutch Dry type single stage –
Steering Hydrostatic power steering
Transmission Gear shift, 8 forward and 8 reverse Hydrostatic transmission 3 range speed
Braking system Mechanical, Wet disk type
Min. turning radius

(with brake)
Hydraulic control system Position control
Pump capacity 29.4 L (7.8 U.S.gals, 6.47 Imp.gals) /min.
Three point hitch Category 1

Max. lift force

System pressure 17.7 MPa (180 kgf/cm
Rear PTO
PTO / Engine speed 540 min

L4701

Manual Transmission HST

2WD 4WD

-1

(rpm)

-1

29.3 kW (39.3 HP) / 2600 min

(rpm)

-1

(rpm) 28.2 kW (37.8 HP) / 2600 min-1 (rpm)

-1

(rpm)

1280 mm (50.4 in.),

Front

1380 mm (54.3 in.),
1480 mm (58.3 in.),

1155 mm (45.5 in.)

1580 mm (62.2 in.)

Rear

1460 kg

(3219 lbs)

1180 mm (46.5 in.), 1200 mm (47.2 in.), 1300 mm (51.2 in.),

1450 mm (57.1 in.),1545 mm (60.8 in.)

1495 kg

(3296 lbs)
Front 7.5L-15 8.3-16
Rear 14.9-24

2.7 m (8.9 feet) 2.6 m (8.5 feet)

At lift points 1300 kg (2870 lbs)
24 in. behind

lift points

PTO shaft
size

-1

(rpm) / 2475 min-1 (rpm) 540 min-1 (rpm) / 2640 min-1 (rpm)

1053 kg (2320 lbs)

2

, 2560 psi)

SAE 1-3/8, 6 splines

INFORMATION

1500 kg (3307 lbs)

• *Manufacturer's estimate. The company reserve the right to change the specifications without notice.

9Y1211012INI0009US0

I-12

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

4. TRAVELING SPEEDS

[1] L3301/L3901

[Manual Transmission Type]

Model L3301/L3901

Tire size (Rear) 11.2-24

Range gear

shift lever

Low

Forward

High

Low

Reverse

High

Main gear shift

lever

1 1.7 (1.1)
2 2.2 (1.4)
3 3.8 (2.3)
4 5.6 (3.5)
1 6.6 (4.1)
2 8.5 (5.3)
3 14.4 (8.9)
4 21.2 (13.2)
1 1.7 (1.1)
2 2.2 (1.4)
3 3.8 (2.3)
4 5.6 (3.4)
1 6.5 (4.1)
2 8.5 (5.3)
3 14.3 (8.9)
4 21.1 (13.1)

INFORMATION

(At rated engine rpm)

km/h (mph)

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

[HST Type]

Model L3301/L3901

Tire size (Rear) 11.2-24

Range shift lever km/h (mph)

L 6.3 (3.9)

Forward

Reserve

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

M 10.9 (6.8)
H 22.7 (14.1)

L 5.6 (3.5)
M 9.9 (6.1)
H 20.5 (12.7)

9Y1211012INI0010US0

(At rated engine rpm)

9Y1211012INI0011US0

I-13

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

[2] L4701

[Manual Transmission Type]

Model L4701

Tire size (Rear) 14.9-24

Range gear

shift lever

Low

Forward

High

Low

Reverse

High

Main gear shift

lever

1 2.2 (1.4)
2 2.8 (1.7)
3 4.6 (2.8)
4 6.7 (4.2)
1 8.0 (5.0)
2 10.0 (6.2)
3 16.3 (10.1)
4 24.0 (14.9)
1 2.1 (1.3)
2 2.7 (1.7)
3 4.4 (2.7)
4 6.4 (4.0)
1 7.7 (4.8)
2 9.6 (6.0)
3 15.6 (9.7)
4 23.0 (14.3)

INFORMATION

(At rated engine rpm)

km/h (mph)

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

[HST Type]

Model L4701

Tire size (Rear) 14.9-24

Range shift lever km/h (mph)

L 5.9 (3.7)

Forward

M12.2 (7.6)

H 25.4 (15.8)

L 5.3 (3.3)

Reserve

M 11.0 (6.8)

H 22.9 (14.2)

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

9Y1211012INI0012US0

(At rated engine rpm)

9Y1211012INI0013US0

I-14

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

5. DIMENSIONS

[1] L3301/L3901

INFORMATION

9Y1211012INI0014US0

I-15

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

[2] L4701

INFORMATION

9Y1211012INI0015US0

I-16

G GENERAL

KiSC issued 09, 2016 A

GENERAL

KiSC issued 09, 2016 A

CONTENTS

1. TRACTOR IDENTIFICATION....................................................................................................... G-1

[1] MODEL NAME AND SERIAL NUMBERS................................. ... ... .... ... ................................ G-1

(1) L3301/L3901..................................................................................................................... G-1

(2) L4701................................................................................................................................ G-2

[2] E4B ENGINE......................................... .... ... ... ... .... ... ....................................... ... ... ................ G-3

[3] CYLINDER NUMBER............................................................................................................. G-3

2. GENERAL PRECAUTIONS.......................................................................................................... G-4

3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING .................................... G-5

[1] WIRING .................................................................................................................................. G-5

[2] BATTERY............................................................................................................................... G-7

[3] FUSE...................................................................................................................................... G-7

[4] CONNECTOR ........................................................................................................................ G-7

[5] CIRCUIT TESTER.................................................................................................................. G-8

[6] COLOR OF WIRING ..............................................................................................................G-9

4. LUBRICANTS, FUEL AND COOLANT............... ... ... .... ...... ... .... ... ... ... ... .... ... ... ... .... ... ... ... ... .... .... G-10

[1] L3301/L3901......................................................................................................................... G-10

[2] L4701.................................................................................................................................... G-11

5. TIGHTENING TORQUES... ... ... ... ....................................... ... .... ... ...................................... .... ... . G-13

[1] GENERAL USE SCREWS, BOLTS AND NUTS.................................................................. G-13

[2] STUD BOLTS....................................................................................................................... G-13

[3] METRIC SCREWS, BOLTS AND NUTS.............................................................................. G-14

[4] AMERICAN STANDARD SCREWS, BOLTS AND NUTS WITH UNC OR UNF

THREADS ............................................................................................................................ G-14

[5] PLUGS ................................................................................................................................. G-14

6. MAINTENANCE CHECK LIST .............................. ... .... ... ... ....................................... ... ... ... ........ G-15

[1] L3301/L3901......................................................................................................................... G-15

[2] L4701.................................................................................................................................... G-18

7. CHECK AND MAINTENANCE ................................................................................................... G-21

[1] L3301/L3901......................................................................................................................... G-21

(1) Daily Check .................................................................................................................... G-21

(2) Check Points of Every 50 Hours..................................................................................... G-26

(3) Check Points of Every 100 Hours................................................................................... G-29

(4) Check Points of Every 200 Hours................................................................................... G-34

(5) Check Points of Every 400 Hours................................................................................... G-36

(6) Check Point of Every 600 Hours .................................................................................... G-39

(7) Check Point of Every 800 Hours .................................................................................... G-40

(8) Check Points of Every 1500 Hours................................................................................. G-40

(9) Check Points of Every 3000 Hours................................................................................. G-41

(10)Check Points of Every 1000 Hours or 1 year................................................................. G-41

(11)Check Points of Every 1 Year ................... ... .... ... ... ... .... ... ...................................... .... ... . G-41

(12)Check Points of Every 2000 Hours or 2 Years............................................................... G-43

(13)Check Points of Every 2 Years ..................................... ... ... ... ... ..................................... G-45

(14)Check points of Every 4 Years....................................................................................... G-45

(15)Others ............................................................................................................................ G-46

[2] L4701.................................................................................................................................... G-50

(1) Daily Check .................................................................................................................... G-50

(2) Check Points of Every 50 Hours..................................................................................... G-55

(3) Check Points of Every 100 Hours................................................................................... G-58

(4) Check Points of Every 200 Hours................................................................................... G-62

(5) Check Points of Every 400 Hours................................................................................... G-64

KiSC issued 09, 2016 A

(6) Check Point of Every 600 Hours..................................................................................... G-66

(7) Check Point of Every 800 Hours..................................................................................... G-67

(8) Check Points of Every 1500 Hours................................................................................. G-67

(9) Check Points of Every 3000 Hours................................................................................. G-68

(10)Check Points of Every 1000 Hours or 1 year ................................................................. G-68

(11)Check Points of Every 1 Year ........................................................................................ G-68

(12)Check Points of Every 2000 Hours or 2 Years............................................................... G-71

(13)Check Points of Every 2 Years.......................................................................................G-73

(14)Check points of Every 4 Years................................................ ... ... ... ... ........................... G-73

(15)Others............................................................................................................................. G-74

8. SPECIAL TOOLS.......................................................................... ..............................................G-78

[1] SPECIAL TOOLS FOR ENGINE..........................................................................................G-78

[2] SPECIAL TOOLS FOR TRACTOR ......................................................................................G-89

9. TIRES .........................................................................................................................................G-99

[1] TIRE PRESSURE.................................................................................................................G-99

[2] TREADS ADJUSTMENT.................................................................................................... G-100

(1) L3301/L3901.................................................................................................................G-100

(2) L4701............................................................................................................................G-102

[3] TIRE LIQUID INJECTION.......................... ... ... .... ...................................... .... ... ... ...............G-106

10. IMPLEMENT LIMITA TI ONS ............................................... .... ... ... ... .... ..................................... G-109

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

1. TRACTOR IDENTIFICATION

[1] MODEL NAME AND SERIAL NUMBERS

(1) L3301/L3901

When contacting your local KUBOTA distributor, always specify

engine serial number, tractor serial number and hour meter reading.

(1) Tractor Identification Plate
(2) Tractor Serial Number
(3) Engine Serial Number

GENERAL

(4) ROPS Identification Plate

(ROPS Serial Number)

(5) Diesel Particulate Filter (DPF) Serial

Number

9Y1211012GEG0001US0

G-1

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

(2) L4701

GENERAL

When contacting your local KUBOTA distributor, always specify

engine serial number, tractor serial number and hour meter reading.

(1) Tractor Identification Plate
(2) Tractor Serial Number
(3) Engine Serial Number

(4) ROPS Identification Plate

(ROPS Serial Number)

(5) Diesel Particulate Filter (DPF) Serial

Number

9Y1211012GEG0002US0

G-2

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

GENERAL

[2] E4B ENGINE

[Example: Engine Model Name V2403-CR-TE4]
The emission controls previously implemented in various countries to prevent air pollution will be stepped up as

Nonroad Emission Standards continue to change. The timing or applicable date of the specific Nonroad Emission
regulations depends on the engine output classification.

Over the past several years, KUBOTA has been supplying diesel engines that comply with regulations in the

respective countries affected by Nonroad Emission regulations. For KUBOTA Engines, E4B will be the designation
that identifies engine models affected by the next emission phase (See the table below).

When servicing or repairing ###-E4B series engines, use only replacement parts for that specific E4B engine,

designated by the appropriate E4B KUBOTA Parts List and perform all maintenance services listed in the appropriate
KUBOTA Operator's Manual or in the appropriate E4B KUBOT A Workshop Manual. Use of inc orrect replacement
parts or replacement parts from other emission level engines (for example: E3B engines), may result in emission
levels out of compliance with the original E4B design and EPA or other applicable regulations.Please refer to the
emission label located on the engine head cover to identify Output classification and Emission Control Information.
E4B engines are identified with "EF" at the end of the Model designation, on the US EPA label. Please note: E4B is
not marked on the engine.

Category (1) Engine output classification EU regulation

K From 19 to 37 kW STAGE IIIB
P From 37 to less than 56 kW STAGE IIIB
N From 56 to less than 75 kW STAGE IIIB
M From 75 to less than 130 kW STAGE IIIB

[3] CYLINDER NUMBER

Category (2) Engine output classification EPA regulation

Less than 19 kW Tier 4

EF

(1) EU regulation engine output classification category
(2) "E4B" engines are identified with "EF" at the end of the Model designation, on

the US EPA label.
"E4B" designates some Interim Tier 4 / Tier 4 models, depending on engine
output classification.

From 19 to less than 56 kW Interim Tier 4
From 56 to less than 75 kW Interim Tier 4
From 75 to less than 130 kW Interim Tier 4

9Y1211012GEG0003US0

The cylinder numbers of KUBOTA diesel engine are designated

as shown in the figure.

The sequence of cylinder numbers is given as No.1, No.2, No.3

and No.4 starting from the gear case side.

9Y1211012GEG0004US0

G-3

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

2. GENERAL PRECAUTIONS

• When you disassemble, carefully put the parts in a clean area
to make it easy to find the parts. You must install the screws,
bolts and nuts in their initial position to prevent the reassembly
errors.

• When it is necessary to use special tools, use KUBOTA special
tools. Refer to the drawings when you make special tools tha t
you do not use frequently.

• Before you disassemble or repair machine, make sure that you
always disconnect the ground cable from the battery first.

• Remove oil and dirt from parts before you measure.

• Use KUBOTA genuine parts for replacement to keep the
machine performance and to make sure of safety.

• You must replace the gaskets and O-rings when you assemble
again. Apply grease (1) to new O-rings or oil seals before you
assemble.

• When you assemble the external or internal snap rings, make
sure that the sharp edge (3) faces against the direction from
which force (2) is applied.

• When inserting spring pins, their splits must face the direction
from which a force is applied. See the figure on the left side.

• To prevent damage to the hydraulic system, use only specified
fluid or equivalent.

• Clean the parts before you measure them.

• Tighten the fittings to the specified torque. Too much torque can
cause damage to the hydraulic units or the fittings. Not sufficient
torque can cause oil leakage.

• When you use a new hose or pipe, tighten the nuts to the
specified torque. Then loosen (approx. by 45°) and let them be
stable before you tighten to the specified torque (This is not
applied to the parts with seal tape).

• When you remove the two ends of a pipe, remove the lower end
first.

• Use two pliers in removal and installation. One to hold the stable
side, and the other to turn the side you remove to prevent twists.

• Make sure that the sleeves of flared connectors and tapers of
hoses are free of dust and scratches.

• After you tighten the fittings, clean the joint and apply the
maximum operation pressure 2 to 3 times to check oil leakage.

(1) Grease
(2) Force
(3) Sharp Edge
(4) Axial Force
(5) Rotating Movement

GENERAL

(A) External Cir-clip
(B) Internal Cir-clip

WSM000001GEG0106US0

G-4

L3301, L3901, L4701, WSM

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING

To ensure safety and prevent damage to the machine and
surrounding equipment, obey the following precautions in handling
electrical parts and wiring.

• Check electrical wiring for damage and loosened
connection every year. To this end, educate the customer
to do his or her own check and at the same time
recommend the dealer to perform periodic check for a fee.

• Do not try to modify or remodel any electrical parts and
wiring.

• When removing the battery cables, disconnect the nega tive
cable first. When installing the battery cables, connect the
positive cable first.

(1) Negative Terminal (2) Positive Terminal

WSM000001GEG0062US0

[1] WIRING

• After installing wiring, check protection of terminals and
clamped condition of wiring.

(1) Cover

(Securely Install Cover)

WSM000001GEG0070US0

• Securely tighten wiring terminals.

(1) Correct

(Securely Tighten)

(2) Incorrect

(Loosening Leads to damaged
Contact)

• Do not let wiring contact dangerous part.

(1) Dangerous Part (Sharp Edge)
(2) Wiring (Incorrect)

(3) Wiring (Correct)
(4) Dangerous Part

WSM000001GEG0063US0

WSM000001GEG0064US0

G-5

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

• Repair or change torn or aged wiring immediately.

(1) Aged
(2) Torn

(3) Insulating Vinyl Tape

WSM000001GEG0065US0

• Securely insert grommet.

(1) Grommet (A) Correct

(B) Incorrect

WSM000001GEG0066US0

• Securely clamp, being careful not to damage wiring.

(1) Clamp

(Wind Clamp Spirally)

(2) Wire Harness

(3) Clamp
(4) Welding Dent

WSM000001GEG0067US0

GENERAL

• Clamp wiring so that there is no twist, unnecessary sag, or
excessive tension, except for movable part, where sag be
required.

(1) Wiring
(2) Clamp

(A) Correct
(B) Incorrect

WSM000001GEG0068US0

• In installing a part, be careful not to get wiring caught by it.

(1) Wiring (A) Incorrect

WSM000001GEG0069US0

G-6

L3301, L3901, L4701, WSM

DANGER

KiSC issued 09, 2016 A

[2] BATTERY

GENERAL

• Be careful not to confuse positive and negative terminal posts.

• When you remove battery cables, disconnect negative cable
first. When you install battery cables, check for polarity and
connect positive cable first.

• Do not install any battery with capacity other than is specified
(Ah).

• After you connect cables to battery terminal posts, apply high
temperature grease to them and securely install terminal covers
on them.

• Do not allow dirt and dust to collect on battery.

To avoid serious injury or death:

• Be careful not to let battery liquid spill on your skin and
clothes. If contaminated, wash it off with water
immediately.

• Before you recharge the battery, remove it from the
machine.

• Before you recharge, remove cell caps.

• Recharge in a well-ventilated place where there is no open
flame nearby, as hydrogen gas and oxygen are formed.

WSM000001GEG0071US0

[3] FUSE

[4] CONNECTOR

• Use fuses with specified capacity.
Neither too large nor small capacity fuse is acceptable.

• Never use steel nor copper wire in place of fuse.

• Do not install working light, radio set, etc. on machine which is
not provided with reserve power supply.

• Do not install accessories if fuse capacity of reserve power
supply is exceeded.

(1) Fuse
(2) Fusible Link

(3) Slow Blow Fuse

WSM000001GEG0072US0

• For connector with lock, push lock to separate.

(A) Push

WSM000001GEG0073US0

• In separating connectors, do not pull wire harnesses.

• Hold connector bodies to separate.

(A) Correct (B) Incorrect

WSM000001GEG0074US0

G-7

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

GENERAL

• Use sandpaper to remove rust from terminals.

• Repair deformed terminal. Make sure that there is no terminal
being exposed or displaced.

(1) Exposed Terminal
(2) Deformed Terminal

(3) Sandpaper
(4) Rust

WSM000001GEG0075US0

• Make sure that there is no female connector being too open.

(A) Correct (B) Incorrect

WSM000001GEG0076US0

• Make sure that plastic cover is large enough to cover whole
connector.

(1) Cover (A) Correct

(B) Incorrect

WSM000001GEG0077US0

[5] CIRCUIT TESTER

• Use tester correctly following manual provided with tester.

• Check for polarity and range.

WSM000001GEG0078US0

G-8

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

[6] COLOR OF WIRING

GENERAL

• Colors of wire are specified to the color code s.

• This symbol of "/" shows color with stripe (s).

(An example)

Red stripe on white color: W/R

Color of wiring Color code

Black B
Brown Br
Green G

Gray Gy or Gr
Blue L

Light Green Lg

Orange Or

Pink P

Purple Pu or V

Red R

Sky Blue Sb

White W
Yellow Y

(1) Wire Color (2) Stripe

WSM000001GEG0079US0

G-9

L3301, L3901, L4701, WSM

NOTE

KiSC issued 09, 2016 A

4. LUBRICANTS, FUEL AND COOLANT

[1] L3301/L3901

GENERAL

No. Place

1Fuel

2Coolant

3 Engine crankcase (with filter)

Manual
Transmission,
2WD

Transmission

4

case

5 Front axle case [4WD]

Manual
Transmission,
4WD

HST, 4WD

Capacity

L3301 L3901

42.0 L

11.0 U.S.gals

9.24 Imp.gals

6.0 L

6.3 U.S.qts

5.3 Imp.qts

6.7 L

7.1 U.S.qts

5.9 Imp.qts

28.0 L

7.4 U.S.gals

6.16 Imp.gals

28.5 L

7.5 U.S.gals

6.27 Imp.gals

23.5 L

6.2 U.S.gals

5.17 Imp.gals

4.5 L

4.8 U.S.qts

4.0 Imp.qts

Lubricants, fuel and coolant

• No. 2-D S15 diesel fuel

• No. 1-D S15 diesel fuel if temperature is
below –10 °C (14 °F)

Fresh clean soft water with anti-freeze

Engine oil: Refer to G-12.

• Above 25 °C (77 °F)
SAE30, SAE10W-30 or 15W-40

• −10 to 25 °C
(14 to 77 °F)
SAE20, SAE10W-30 or 15W-40

• Below −10 °C (14 °F)
SAE10W-30

KUBOTA SUPER UDT-2 fluid

KUBOTA SUPER UDT-2 fluid or SAE80,
90 gear oil

• KUBOTA UDT or SUPER UDT fluid: KUBOTA original transmission hydraulic fluid.

Front wheel hub 2 [2WD only] A small amount Bearing grease
Knuckle shaft 2 [2WD only]
Front axle support 2 [4WD only]
Clutch pedal 1
Brake pedal 1

6

Pedal shaft 1
Battery terminals 2
Lift rod 2
Tie rod end 4 [4WD only]
Top link 2

Greasing

Place No. of greasing point Capacity Type of grease

Multipurpose type
Until grease
overflows

G-10

grease

NLGI-2 or NLGI-1

(GC-LB)

9Y1211012GEG0005US0

L3301, L3901, L4701, WSM

NOTE

KiSC issued 09, 2016 A

[2] L4701

GENERAL

No. Place

1Fuel

2 Coolant

Engine crankcase

3

(with filter)

4 Transmission case

5 Front axle case [4WD]

Capacity

L4701

51.0 L

13.5 U.S.gals

11.2 Imp.gals

6.5 L

6.9 U.S.qts

5.7 Imp.qts

8.2 L

8.7 U.S.qts

7.2 Imp.qts

40.0 L

10.6 U.S.gals

8.80 Imp.gals

6.5 L

6.9 U.S.qts

5.7 Imp.qts

Lubricants, fuel and coolant

• No. 2-D S15 diesel fuel

• No. 1-D S15 diesel fuel if temperature is
below –10 °C (14 °F)

Fresh clean soft water with anti-freeze

Engine oil: Refer to G-12.

• Above 25 °C (77 °F)
SAE30, SAE10W-30 or 15W-40

• −10 to 25 °C
(14 to 77 °F)
SAE20, SAE10W-30 or 15W-40

•Below −10 °C (14 °F)
SAE10W-30

KUBOTA SUPER UDT-2 fluid

KUBOTA SUPER UDT-2 fluid or SAE80,
90 gear oil

• KUBOTA UDT or SUPER UDT fluid: KUBOTA original transmission hydraulic fluid.
Greasing

Place No. of greasing point Capacity Type of grease

Front wheel hub 2 [2WD only] A small amount Bearing grease
Knuckle shaft 2 [2WD only]
Front axle support 2 [4WD only]
Tie-rod ends 2 [4WD only]

6

Battery terminals 2
Lift rod 2
Top link 2
Hydraulic arm shaft 2

Until grease
overflows

Multipurpose type
grease
NLGI-2 or NLGI-1
(GC-LB)

9Y1211012GEG0007US0

G-11

L3301, L3901, L4701, WSM

NOTE

KiSC issued 09, 2016 A

GENERAL

Engine Oil:

• 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.

• 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.

Fuel used

Engine oil classification (API classification)

Oil class of engines with DPF

Ultra Low Sulfur Fuel [< 0.0015 % (15 ppm)] CJ-4

Fuel:

• Use the ultra low sulfur diesel fuel only [below 0.0015 % (15 ppm)] for these engines.

• Cetane number of 45 minimum. Cetane number greater than 50 is preferred, especially for temperatures
below −20 °C (−4 °F) or elevations above 1500 m (5000 ft).

• Diesel fuels specified to EN 590 or ASTM D975 are recommended.

• No.2-D is a distillate fuel of lower volatility for engines in industrial and he avy mobile ser vice. (SAE J31 3
JUN87).

Transmission Oil:

*KUBOTA Super UDT-2: For an enhanced ownership experie nce, we highly recommend Super UDT-2 to be used

instead of standard hydraulic/transmission fluid.

Super UDT-2 is a proprietary KUBOTA formula tion that deliveries superior performance and protection in all

operating conditions.

Regular UDT is also permitted for use in this machine.

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

9Y1211012GEG0006US0

G-12

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

GENERAL

5. TIGHTENING TORQUES

[1] GENERAL USE SCREWS, BOLTS AND NUTS

Tighten screws, bolts and nuts whose tightening torques are not specified in this Workshop Manual

according to the table below.

Indication on top of bolt

Indication on top of nut

Material of opponent part Ordinariness Aluminum Ordinariness Aluminum Ordinariness

Unit N·m kgf·m lbf·ft N·m kgf·m lbf·ft N·m kgf·m lbf·ft N·m kgf·m lbf·ft N·m kgf·m lbf·ft

7.9

0.80

M6

M8

M10

M12

M14

M16

M18

M20

to

9.3
18

to

20
40

to

45
63

to

72

108

to

125
167

to

191
246

to

284
334

to

392

to

0.95

1.8
to

2.1

4.0
to

4.6

6.4
to

7.4

11.0
to

12.8

17.0
to

19.5

25.0
to

29.0

34.0
to

40.0

No-grade or 4T 7T 9T

No-grade or 4T

5.8

7.9

0.80

5.8

9.81

1.00

7.24

7.9

0.80

5.8

12.3

to

to

to

to

to

to

to

to

to

to

6.8

8.8

0.90

6.5

13

17

1.7

to

to

15

19
32

29

to

to

33

34

47

to 53–––

79.6
to

–––

92.5

3

12

to

–––

141
181

to

209
246

289

–––

to

–––

to

2.0

3.2
to

3.5

13

to

14
24

to

25

11.2
24

to

27
48

to

55
78

to

90

124

to

147
197

to

225
275

to

318
368

to

431

1.15

2.4
to

2.8

4.9
to

5.7

7.9
to

9.2

12.6
to

15.0

20.0
to

23.0

28.0
to

32.5

37.5
to

44.0

8.31
18

to

20
36

to

41
58

to

66

91.2

to

108
145

to

166
203

to

235
272

to

318

8.8

0.90

18

1.8

to

to

20

2.1

4.0
to

4.5

6.4
to

7.4

40

to

44
63

to

72

–––

–––

–––

–––

to

6.5

14.2

13

30

to

to

15

34

29

61

to

to

32

70

47

103

to

to

53

117

67

1

to

196
260

to

304
344

to

402
491

to

568

WSM000001GEG0001US0

6T

1.25
to

1.45

3.0
to

3.5

6.2
to

7.2

10.5
to

12.0

17.0
to

20.0

26.5
to

31.0

35.0
to

41.0

50.0
to

58.0

9.05
to

10.4
22

to
25

45
to
52

76.0
to

86.7

123

to

144
192

to

224
254

to

296
362

to

419

[2] STUD BOLTS

Material of opponent part Ordinariness Aluminum

Unit N·m kgf·m lbf·ft N·m kgf·m lbf·ft

12

1.2

8.7

8.9

M8

M10

M12

M14

M16

M18

to

15
25

to

31
30

to

49
62

to

73

98.1
to

112
172

to

201

to

to

1.6

11

2.5

18

to

to

3.2

23

3.0

22

to

to 3631 3.2 23

5.0

6.3

46

to

to 54–––

7.5

10.0

72.4

to

to

11.5

83.1

17.5

127

to

to

20.5

148

0.90

to

to

11

1.2

20

2.0

to

to

25

2.6

–––

–––

G-13

6.5
to

8.6

15

to

18

WSM000001GEG0002US0

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

[3] METRIC SCREWS, BOLTS AND NUTS

GENERAL

Grade

Unit N·m kgf·m lbf·ft N·m kgf·m lbf·ft

M8 24 to 27 2.4 to 2.8 18 to 20 30 to 34 3.0 to 3.5 22 to 25
M10 48 to 55 4.9 to 5.7 36 to 41 61 to 70 6.2 to 7.2 45 to 52
M12 78 to 90 7.9 to 9.2 58 to 66 103 to 117 10.5 to 12.0 76.0 to 86.7
M14 124 to 147 12.6 to 15.0 91.2 to 108 167 to 196 17.0 to 20.0 123 to 144
M16 197 to 225 20.0 to 23.0 145 to 166 260 to 304 26.5 to 31.0 192 to 224

Property class 8.8 Property class 10.9

WSM000001GEG0003US0

[4] AMERICAN STANDARD SCREWS, BOLTS AND NUTS WITH

UNC OR UNF THREADS

Grade

Unit N·m kgf·m lbf·ft N·m kgf·m lbf·ft

1/4 11.7 to 15.7 1.20 to 1.60 8.63 to 11.5 16.3 to 19.7 1.67 to 2.00 12.0 to 14.6
5/16 23.1 to 27.7 2.36 to 2.82 17.0 to 20.5 33 to 39 3.4 to 3.9 25 to 28

3/8 48 to 56 4.9 to 5.7 36 to 41 61 to 73 6.3 to 7.4 45 to 53

1/2 110 to 130 11.3 to 13.2 81.2 to 95.8 150 to 178 15.3 to 18.1 111 to 131
9/16 150 to 178 15.3 to 18.1 111 to 131 217 to 260 22.2 to 26.5 160 to 191

5/8 204 to 244 20.8 to 24.8 151 to 179 299 to 357 30.5 to 36.4 221 to 263

SAE GR.5 SAE GR.8

WSM000001GEG0008US0

[5] PLUGS

Material of opponent part

Shape Size

N·m kgf·m lbf·ft N·m kgf·m lbf·ft

Tapered screw

Straight screw G1/4 25 to 34 2.5 to 3.5 18 to 25 – – –

R1/8 13 to 21 1.3 to 2.2 9.4 to 15 13 to 19 1.3 to 2.0 9.4 to 14
R1/4 25 to 44 2.5 to 4.5 18 to 32 25 to 34 2.5 to 3.5 18 to 25
R3/8 49 to 88 5.0 to 9.0 37 to 65 49 to 58 5.0 to 6.0 37 to 43
R1/2 58.9 to 107 6.00 to 11.0 43.4 to 79.5 59 to 78 6.0 to 8.0 44 to 57

G3/8 62 to 82 6.3 to 8.4 46 to 60 – – –
G1/2 49 to 88 5.0 to 9.0 37 to 65 – – –

Ordinariness Aluminum

WSM000001GEG0005US0

G-14

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

6. MAINTENANCE CHECK LIST

[1] L3301/L3901

GENERAL

Indication on hour meter

No. Item

1 Engine start system Check 

2 Wheel bolt torque Check 

3 Greasing – 

4 Battery condition Check 

5 Fan belt Adjust 

6Brake Adjust 

7 Clutch Adjust 

Clean 

8 Air cleaner element

Replace

Check

9 Fuel line

Replace

Check 

10 Fuel grommet

Replace

Transmission oil filter

11

[HST]

12 Toe-in Adjust 

Power steering oil line

13

[Manual Transmission]

14

Oil cooler line [HST]

15 Radiator hose and clamp

16 Intake air line

17 Oil separator hose

18 Engine oil Change 

19 Engine oil filter Replace 

20 Water separator Clean 

Replace 

Check

Replace

Check

Replace

Check

Replace

Check

Replace

Check

Replace

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

1000 Hr

or

1 year

every

1 year

every

4 years

every

100 Hr

every

2 years

every

200 Hr

every

200 Hr

every

1year

every

4 years

every

1year

every

4 years

every

1year

every

4 years

every

1year

every

4 years

every

1year

every

4 years

every

400 Hr

every

400 Hr

every

400 Hr

Refer-

ence
page

G-27

G-28

G-26

G-32 *4

G-29

G-31

G-30

G-29 *1

G-29 *2

G-41 *5

G-41 *5

G-30

G-30

G-34

G-35

G-43 *5

G-43 *5

G-42 *5

G-42 *5

G-42 *5

G-42 *5

G-42 *5

G-42 *5

G-42 *5

G-42 *5

G-36

G-36

G-39

Impor-

tant

@

@

@

@

G-15

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

GENERAL

Indication on hour meter

No. Item

21 Fuel filter Replace 

22 Hydraulic oil filter Replace 

23 Transmission fluid Change 

24 Front axle case oil (4WD) Change

Greasing

25

(2WD front wheel hub)

26 Front axle pivot Adjust 

27 Engine valve clearance Adjust

28 Fuel injector nozzle tip Clean

29 Oil separator element Replace

PCV (Positive Crankcase

30

Ventilation) valve
(Oil separator)

31 EGR cooler

32 EGR system

33 Supply pump Check

34 DPF muffler Clean

35 Exhaust manifold Check

DPF differential pressure

36

sensor pipe

37 EGR pipe Check

Antifrost heater for oil

38

separator (if equipped)
DPF differential pressure

39

sensor hose

ooling system Flush

40 C

41 Coolant Change

42 Fuel system Bleed
43 Clutch housing Drain G-46
44 Fuse Replace G-47
45 Light bulb Replace G-48
46 Fuel line Replace G-48 *5
47 Radiator hose and clamp Replace G-48 *5
48 Intake air line Replace G-48 *5
49 Power steering oil line Replace G-48 *5
50 Oil cooler line [HST] Replace G-48 *5
51 Oil separator hose Replace G-49 *5

Check

Check
Clean

Check
Clean

Check

Check

Replace

50 100 150 200 250 300 350 400 450 500 550 600 650 700

– 

Interval

400 Hr

400 Hr

400 Hr

800 Hr

400 Hr

600 Hr

800 Hr

1500 Hr

1500 Hr

1500 Hr

1500 Hr

3000 Hr

3000 Hr

3000 Hr

1000 Hr

1 year

1 year

1 year

1 year

2 years

2000 Hr

2 years

2000 Hr

2 years

Service

required

every

every

every

every

every

every

every

every

every

every

every

every

every

every

every

or

every

every

every

every

every

or

every

or

as

Refer-

ence
page

G-39 @

G-37

G-37

G-40

G-39

G-39

G-40

G-40 @

G-40 @

G-40 @

G-40 @

G-41 @

G-41

G-41 @

G-41 *2

G-41

G-41

G-41

G-45

G-43 *3

G-43 *3

G-46

Impor-

tant

G-16

L3301, L3901, L4701, WSM

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

• 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 1,000 hours or every 1 year, whichever comes first.

• *3: Every 2,000 hours or every 2 years, whichever comes first.

• *4: When the battery is used for less than 100 hours per year, check the battery condition by rea ding the
indicator annually.

• *5: Replace if any deterioration (crack, hardening, scar of deformation) or damage occurred.
However, must be replaced every 4 years regardless of the condition.

• The items listed above (@ marked) are registered as emission related critical parts by KUBOTA in
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.

9Y1211012GEG0008US0

G-17

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

[2] L4701

GENERAL

Indication on hour meter

No. Item

1 Engine start system Check 

2 Wheel bolt torque Check 

3 Greasing – 

4 Battery condition Check 

5 Fan belt Adjust 

6Brake Adjust 

Clutch

7

[Manual Transmission]

Air cleaner element
Primary element

8

Secondary element Replace

9 Fuel line

10 Fuel grommet

Transmission oil filter

11

[HST]

12 Toe-in Adjust 

13 Power steering oil line

14 Oil cooler line [HST]

15 Radiator hose and clamp

16 Intake air line

17 Oil separator hose

18 Engine oil Change 

19 Engine oil filter Replace 

Adjust 

Clean 

Replace

Check

Replace

Check 

Replace

Replace   

Check

Replace

Check

Replace

Check

Replace

Check

Replace

Check

Replace

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

1000 Hr

or

1 year

every

1000 Hr

or

1 year

every

1 year

every

4 years

every

100 Hr

every

2 years

every

200 Hr

every

200 Hr

ev

1 year

every

4 years

every

1 year

every

4 years

every

1 year

every

4 years

every

1 year

every

4 years

every

1 year

every

4 years

every

400 Hr

every

400 Hr

ery

Refer-

ence
page

G-56

G-57

G-55

G-60 *4

G-58

G-59

G-59

G-58 *1

G-58 *2

G-58 *2

G-68 *5

G-68 *5

G-59

G-59

G-62

G-63

G-70 *5

G-70 *5

G-69 *5

G-69 *5

G-69 *5

G-69 *5

G-69 *5

G-69 *5

G-69 *5

G-69 *5

G-64

G-64

Impor-

tant

@

@

@

@

G-18

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

GENERAL

Indication on hour meter

No. Item

20 Water separator Clean 

21 Fuel filter Replace 

22 Hydraulic oil filter Replace 

23 Transmission fluid Change 

24 Front axle case oil (4WD) Change

Greasing

25

(2WD front wheel hub)

26 Front axle pivot Adjust 

27 Engine valve clearance Adjust

28 Fuel injector nozzle tip Clean

29 Oil separator element Replace

PCV (Positive Crankcase

30

Ventilation) valve
(Oil separator)

31 EGR cooler

32 EGR system

33 Supply pump Check

34 DPF muffler Clean

35 Exhaust manifold Check

DPF differential pressure

36

sensor pipe

37 EGR pipe Check

Antifrost heater for oil

38

separator (if equipped)
DPF differential pressure

39

sensor hose

40 Cooling system Flush

41 Coolant Change

42 Fuel system Bleed
43 Clutch housing Drain G-74
44 Fuse Replace G-75
45 Light bulb Replace G-76
46 Fuel line Replace G-48 *5
47 Radiator hose and clamp Replace G-48 *5
48 Intake air line Replace G-48 *5
49 Power steering oil line Replace G-48 *5
50 Oil cooler line [HST] Replace G-48 *5
51 Oil separator hose Replace G-49 *5

Check

Check
Clean

Check
Clean

Check

Check

Repl

50 100 150 200 250 300 350 400 450 500 550 600 650 700

– 

ace

Interval

400 Hr

400 Hr

400 Hr

400 Hr

800 Hr

400 Hr

600 Hr

800 Hr

1500 Hr

1500 Hr

1500 Hr

1500 Hr

3000 Hr

3000 Hr

3000 Hr

1000 Hr

1year

1year

1year

1year

2 years

2000 Hr

2 years

2000 Hr

2 years

Service

required

every

every

every

every

every

every

every

every

every

every

every

every

every

every

every

every

or

every

every

every

every

every

or

every

or

as

Refer-

ence
page

G-66

G-66 @

G-65

G-65

G-67

G-66

G-66

G-67

G-67 @

G-67 @

G-67 @

G-67 @

G-68 @

G-68

G-68 @

G-68 *2

G-68

G-68

G-68

G-68

G-71 *3

G-71 *3

G-74

Impor-

tant

G-19

L3301, L3901, L4701, WSM

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

• 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 1,000 hours or every 1 year, whichever comes first.

• *3: Every 2,000 hours or every 2 years, whichever comes first.

• *4: When the battery is used for less than 100 hours per year, check th e batte ry con dition by re ading the
indicator annually.

• *5: Replace if any deterioration (crack, hardening, scar of deformation) or damage occurred.
However, must be replaced every 4 years regardless of the condition.

• The items listed above (@ marked) are registered as emission related critical parts by KUBOTA in
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.

9Y1211012GEG0009US0

G-20

L3301, L3901, L4701, WSM

CAUTION

CAUTION

CAUTION

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

7. CHECK AND MAINTENANCE

[1] L3301/L3901

• Be sure to check and service the tractor on a f lat place with engine s hut off and pull t he parking brake on
and chock the wheels.

9Y1211012GEG0054US0

(1) Daily Check

To prevent trouble from occurring, it is important to know the condition of the tractor. Check the following items

before starting.

To avoid personal injury:
Take the following precautions when checking the tractor.

• Park the machine on firm and level ground.

• Set the parking brake.

• Lower the implement to the ground.

• All residual pressure of the hydraulic system released.

• Stop the engine and remove the key.

9Y1211012GEG0055US0

Walk Around Inspection

Look around and under the tractor for such items as loo se bolts,

trash build-up, oil or coolant leaks, broken or worn parts.

9Y1211012GEG0056US0

Checking and Refueling

• Do not smoke while refueling.

• Be sure to stop the engine before refueling.

1. Turn the key switch to "ON", check the amount of fuel by fuel
gauge.

2. Fill fuel tank when fuel gauge shows 1/4 or less fuel in tank.

Fuel tank Capacity

42.0 L

11.0 U.S.gals

9.24 Imp.gals

• Do not permit dirt or trash to get into the fuel system.

• Be careful not to let the fuel tank become empty, otherwise
air will enter the fuel system, necessitating ble eding before
next engine start.

• Be careful not to spill during refueling. If a spill should
occur, wipe it off at once, or it may cause a fire.

• To prevent condensation (water) accumulation in the fuel
tank, fill the tank before parking overnight.

(1) Fuel Tank Cap

9Y1211012GEG0059US0

G-21

L3301, L3901, L4701, WSM

IMPORTANT

CAUTION

IMPORTANT

NOTE

KiSC issued 09, 2016 A

GENERAL

Checking 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
valve, 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.

• If water is drawn through to the fuel pump, extensive
damage will occur.

(1) Red Float
(2) Fuel Valve
(3) Retainer Ring
(4) Cup

A: White Line

9Y1211012GEG0060US0

Checking Engine Oil Level

• 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.
(Refer to "LUBRICANTS, FUEL AND COOLANT" on page
G-10.)

• 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.

• If oil level is low, do not run engine.

• At times a small amount of fuel, whic h is used to regenerate
the DPF, may get mixed with the engine oil and the engine
oil may increase in volume.

(1) Oil Inlet
(2) Dipstick

(A) Oil level is acceptable within this

range.

9Y1211012GEG0061US0

G-22

L3301, L3901, L4701, WSM

IMPORTANT

CAUTION

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

Checking 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.
(Refer to "LUBRICANTS, FUEL AND COOLANT" on page
G-10.)

• If oil level is low, do not run engine.

(1) Dipstick
(2) Oil Inlet

[A] Manual Transmission Type
[B] HST Type

(A) Oil level is acceptable within this

range

9Y1211012GEG0062US0

Checking Coolant Level

• 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.
(Refer to "LUBRICANTS, FUEL AND COOLANT" on page
G-10.)

3. When the coolant level is lower than "LOW" mark of recovery
tank, remove the radiator cap and check to see th at the coola nt
level is just below the port. If level is low, add coolant.

• If the radiator cap has to be removed, follow the caution
above and securely retighten the cap.

• Use clean, fresh soft water and anti-freeze to fill the
radiator.

(1) Recovery Tank A: Full

B: Low

9Y1211012GEG0063US0

G-23

L3301, L3901, L4701, WSM

CAUTION

IMPORTANT

CAUTION

CAUTION

KiSC issued 09, 2016 A

GENERAL

Cleaning Evacuator Valve

1. Open the evacuator valve to get rid of large particles of dust an d
dirt.

(1) Evacuator Valve

9Y1211012GEG0064US0

Cleaning Grill and Radiator Screen

• Be sure to stop the engine before removing the screen.

• Before checking or cleaning the radiator screen, stop the
engine and wait long enough until it is cooled down.

1. Check front grill and side screens to be sure they are clean of
debris.

2. Detach the screen with the fixed spring being held up and
remove all foreign materials and clean the front of radiator
completely.

• Grill and screen must be clean from debris to prevent
engine from overheating and to allow good air intake for
the air cleaner.

(1) Radiator Screen
(2) Fixed Spring
(3) Oil Cooler [HST Type]
(4) Fuel Cooler

A: Hold Up
B: Detach

9Y1211012GEG0065US0

Checking DPF Muffler

• Before checking or cleaning the DPF muffler, stop the
engine and wait long enough until it is cooled down.

1. Check the DPF muffler and its surroundings for build-up of
anything flammable. Otherwise a fire may result .

(1) DPF Muffler

9Y1211012GEG0066US0

Checking Brake Pedals and Clutch Pedal

• 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 and clutch ped als for free trave l, an d sm ooth
operation.

2. Adjust if incorrect measurement is found:
(See page "Adjusting Brake Pedal" on page G-31 or "Adjusting
Clutch Pedal" on page G-30.)

9Y1211012GEG0067US0

G-24

L3301, L3901, L4701, WSM

CAUTION

KiSC issued 09, 2016 A

GENERAL

Checking Gauges, Meter and Easy Checker™

1. Inspect the instrument panel for broken gauge(s), meter(s) and
Easy Checker™ lamps.

2. Replace if broken.

9Y1211012GEG0068US0

Checking Head Light, Turn Signal / Hazard Light etc.

1. Inspect the lights for broken bulbs and lenses.

2. Replace if broken.

9Y1211012GEG0069US0

Checking Seat Belt and ROPS

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

2. Replace if damaged.

9Y1211012GEG0070US0

Checking and Cleaning of Electrical Wiring and Battery Cables

• A loosened terminal or connector, or damaged wire may
affect the performance of electrical components or cause
short circuits. Leakage of electricity could result in a fire
hazard, a dead battery or damage to electrical components.

• Replace damaged wires or connections promptly.

• If a fuse blows soon after replacement, DO NOT USE A
LARGER THAN RECOMMENDED FUSE OR BYPASS THE
FUSE SYSTEM.

• Many wiring connections are protected by waterproof
plugs, plug and unplug these connections carefully and
make sure they are sealed correctly after assembly.

• Accumulation of dust, chaff and spilled fuel deposits
around the battery, electrical wiring, engine or exhaust
system are fire hazards. CLEAN THESE AREAS BEFORE
STARTING WORK.
To avoid premature electrical malfunctions DO NOT APPLY
high pressure water directly to battery, wiring, con nectors,
electrical components or instrument panel.

Inspect the following regularly:

1. Check wiring for chafed or cracked insulation.

2. Check wiring harness clamps. Replace if necessary.

3. Check connectors and terminals for looseness, contamination
or overheated (discolored) connec tions.

4. Check instrument panel for correct operation of switches and
gauges.

9Y1211012GEG0071US0

Checking 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.

9Y1211012GEG0072US0

G-25

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

(2) Check Points of Every 50 Hours

Lubricating Grease Fittings

1. Apply a small amount of m ultipurpose grease to the following

2. When apply grease to forward front axle support, remove the

GENERAL

points every 50 hours:
If you operated the machine in extremely wet and muddy
conditions, lubricate grease fittings more often.

breather plug and apply grease until grease overflows from
breather plug port. After greasing reinstall the breather plug.

(1) Grease Fitting

(Knuckle Shaft) [RH, LH]
(2) Grease Fitting (Front axle support)
(3) Breather Plug
(4) Grease Fitting (Pedal Shaft)
(5) Grease Fitting (Top Link)
(6) Grease Fitting (Lifting Rod) [RH]

(7) Battery Terminals
(8) Grease Fitting (Tie-rod Ends)

[A] 2WD
[B] 4WD

9Y1211012GEG0073US0

G-26

L3301, L3901, L4701, WSM

CAUTION

KiSC issued 09, 2016 A

GENERAL

Checking Engine Start System

• Do not allow anyone near the tractor while testing.

• If the tractor does not pass the test, do not operate the
tractor.

 Preparat ion before testing

1. Place all control levers in the "NEUTRAL" position.

2. Set the parking brake and stop the engine.

[Manual Transmission Type]
 Test: Switch for the shuttle shift lever.

1. Sit on the operator's seat.

2. Shift the shuttle shift lever to the forward or reverse position.

3. Depress the clutch pedal fully.

4. Disengage the PTO gear shift lever.

5. Turn the key to "START" position.

6. The engine must not crank.

 Test: Switch for the PTO gear shift lever.

1. Sit on the operator's seat.

2. Engage the PTO gear shift lever.

3. Depress the clutch pedal fully.

4. Shift the shuttle shift lever to the neutral position.

5. Turn the key to "START" position.

6. The engine must not crank.

[HST Type]
 Test: Switch for the speed control pedal.

1. Sit on the operator's seat.

2. Depress the speed control pedal to the desired direction.

3. Depress the clutch pedal fully.

4. Disengage the PTO gear shift lever.

5. Turn the key to "START" position.

6. The engine must not crank.

 Test: Switch for the PTO gear shift lever.

1. Sit on the operator's seat.

2. Engage the PTO gear shift lever.

3. Depress the clutch pedal fully.

4. Place the speed control pedal in neutral position.

5. Turn the key to "START" position.

6. The engine must not crank.

(1) Clutch Pedal
(2) Shuttle Shift Lever
(3) PTO Gear Shift Lever
(4) Speed Control Pedal

[A] Manual Transmission Type
[B] HST Type

9Y1211012GEG0074US0

G-27

L3301, L3901, L4701, WSM

CAUTION

CAUTION

KiSC issued 09, 2016 A

GENERAL

Checking Operator Presence Control

• Do not allow anyone near the tractor while testing.

• If the tractor does not pass the test, do not operate the
tractor.

 Preparation before testing

1. Place all control levers in the "NEUTRAL" position.

2. Set the parking brake and stop the engine.

 Test: Switch for the operator's seat.

1. Sit on the operator's seat.

2. Start the engine.

3. Engage the PTO gear shift lever.

4. Stand up. (Do not get off the machine.)

5. The engine must shut off after approximately 1 second.

(1) PTO Gear Shift Lever [A] Manual Transmission Type

[B] HST Type

9Y1211012GEG0075US0

Checking Wheel Bolt Torque

• Never operate tractor with a loose rim, wheel, or axle.

• Any time bolts and nuts are loosened, retighten to
specified torque.

• Check all bolts and nuts frequently and keep them tight.

1. Check wheel bolts and nuts regularly especially when new. If
they are loose, tighten them as follows.

137 N·m

Front wheel mounting nut

Tightening torque

Rear wheel mounting
screw and nut

(1) Front Wheel Mounting Nut (2) Rear Wheel Mounting Screw and

14 kgf·m
100 lbf·ft

215 N·m
22 kgf·m
160 lbf·ft

Nut

9Y1211012GEG0076US0

G-28

L3301, L3901, L4701, WSM

NOTE

IMPORTANT

CAUTION

KiSC issued 09, 2016 A

(3) Check Points of Every 100 Hours

Cleaning Air Cleaner Element [Single Element Type]

1. Remove the element.

2. Clean the element:
– When dry dust adheres to the element, blow compressed air

– When carbon or oil adheres to the element, soak the

3. Replace air cleaner element:
Once yearly or after every sixth cleaning, whichever comes first.

• Check to see if the evacuator valve is blocked with dust.

• The air cleaner uses a dry element, never apply oil.

• Do not run the engine with filter eleme nt re mo ve d .

• Be sure to refit the cover with the arrow ↑ (on the rear)
upright. If the cover is improperly fitted, dust passed by the
baffle and directly adheres to the element.

 Evacuator Valve

Open the evacuator valve once a week under ordinary

conditions - or daily when used in a d usty p lace - to ge t rid o f larg e
particles of dust and dirt.

(1) Elements
(2) Cover

Adjusting Fan Belt Tension

GENERAL

from the inside, turning the element. Pressure of
compressed air must be under 205 kPa (2.1 kgf/cm
30 psi).

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. (referring to the
instructions on the label attached to the case.)

(3) Evacuator Valve

9Y1211012GEG0077US0

2

,

• Be sure to stop the engine before checking 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

Fan belt tension Factory specification

(1) Bolt A: Check the belt tension

B: To tighten

(0.28 to 0.35 in.) when the
belt is pressed
98 N (10 kgf, 22 lbf) in the
middle of the span

9Y1211012GEG0078US0

G-29

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

GENERAL

Checking Fuel Grommet

1. Check the grommets for cracks and fuel leak.

2. If any of such problems is found, replace the grommet(s) with
new one(s).

(1) Fuel Grommet

9Y1211012GEG0080US0

Adjusting Clutch Pedal
 Adjusting procedure [with single clutch] [L3301 Manual

Transmission Type], [HST Type]

1. Stop the engine and remove the key.

2. Slightly depress the clutch pedal and measure free travel at the
top of pedal stroke.

3. If adjustment is needed, loosen the lock nut and turn the clutch
rod to adjust the rod length within acceptable limits.

4. Retighten the lock nut.

Brake pedal free travel Factory specification

20 to 30 mm (0.8 to 1.2 in.)
on the pedal

 Adjusting procedure [with Dual Clutch] [L3901 Manual

Transmission Type]

1. At first adjust clutch play, same as with single disc clutch.

2. Remove the cover located on the right side of flywheel housing
case.

3. Loosen the lock nut, tighten the adjust bolt by using 7 mm
(0.28 in.) spanner until head of the bolt contacts pressure plate
slightly. Make 3/4 turn counterclockwise to give 0.9 to 1.0 mm
(0.035 to 0.039 in.) clearance.

4. Tighten the lock nut, holding the adjusting bolt.

5. Turn the flywheel to adjust the clearance of other adjusting
bolts. (3 bolts).

6. Repeat step (3) and readjust free travel of clutch pedal if
necessary.

(1) Lock Nut
(2) Clutch Rod
(3) Adjusting Bolt

A: 7 mm (0.28 in.)
B: 0.9 to 1.0 mm (0.035 to 0.039 in.)

9Y1211012GEG0081US0

G-30

L3301, L3901, L4701, WSM

CAUTION

KiSC issued 09, 2016 A

GENERAL

Adjusting Brake Pedal

• Stop the engine and chock the wheels before checking
brake pedal.

1. Release the parking brake.

2. Slightly depress the brake pedals and measure free travel at top
of pedal stroke.

3. If adjustment is needed, lo osen th e lock nu t and turn t he brak e
rod to adjust the rod length within acceptable limits.

4. Retighten the lock nut.

15 to 20 mm (0.6 to 0.8 in.)

Brake pedal free travel

"A"

Factory specification

on the pedal
Keep the free travel in the

right and left brake pedals
equal.

(1) Lock Nut
(2) Brake Rod

A: Free Travel

9Y1211012GEG0082US0

G-31

L3301, L3901, L4701, WSM

DANGER

CAUTION

NOTE

KiSC issued 09, 2016 A

GENERAL

Checking Battery Condition

To avoid the possibility of battery explosion:
For the refillable type battery, follow the instructions below.

• 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.

• Never remove the battery cap while the engine is running.

• Keep electrolyte away from eyes, hands and clothes. If you
are spattered with it, wash it away completely with water
immediately and get medical attention.

• Keep open sparks and flames away from the battery at all
times. Hydrogen gas mixed with oxygen becomes very
explosive.

• Wear eye protection and rubber gloves when working
around battery.

• 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.

 How to read the indicator

Check the battery condition by reading the indicator.

State of indicator display

Green

Black Needs charging battery.
White Needs replacing battery.

(1) Battery (2) Indicator

Specific gravity of electrolyte and quality of electrolyte
are both in good condition.

9Y1211012GEG0083US0

Battery Cable Connections

1. Be sure to wire the battery cable as shown in th e figu re.

2. Tighten the terminal until the stopper comes in contact.

(1) Negative Cable
(2) Positive Cable
(3) Terminal
(4) Stopper

(A) Correct
(B) Incorrect

9Y1211012GEG0057US0

G-32

L3301, L3901, L4701, WSM

CAUTION

KiSC issued 09, 2016 A

GENERAL

Battery Charging

• 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.

• When charging the battery, ensure the vent caps are
securely in place. (if equipped)

• 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.

• Never check battery charge by placing a metal object
across the posts.
Use a voltmeter or hydrometer.

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 dis play turns green fro m
black.

4. When exchanging an old battery for a new one, use battery of
equal specification shown in table 1.

Table 1

Battery Type Volt (V)

75D23R 12 110 580 6.5

Reserve
capacity

(min.)

Cold

Cranking

Ampere

(SAE) (A)

Normal

Charging

Rate (A)

 Direction for Storage

1. When storing the tractor for long periods of time, remove the
battery from tractor, adjust the electrolyte to the proper leve l and
store in a dry place out of direct sunlight.

2. The battery self-dischar ges while it is stored.
Recharge it once every 3 months in hot seasons and once every
6 months in cold seasons.

(1) Battery

9Y1211012GEG0084US0

G-33

L3301, L3901, L4701, WSM

CAUTION

IMPORTANT

KiSC issued 09, 2016 A

(4) Check Points of Every 200 Hours

Replacing Transmission Oil Filter [HST Type]

• Be sure to stop the engine before changing the oil filter
cartridge.

• Allow engine to cool down sufficiently, oil can be hot and
can burn.

1. Place the oil pan underneath the transmission oil filter and
remove the filter.
Do not remove the hydraulic oil filter. Otherwise, the oil comes
out.

2. Put a film of clean transmission oil on the rubber seal of the new
filter.

3. Quickly tighten the filter until it contacts the mounting surface,
then, with a filter wrench, tighten it an additional 1 turn only.

4. After the new filter has been replaced, fill the transmission oil up
to the upper notch on the dipstick.

5. After running the engine for a few minutes, stop the engine and
check the oil level again, add oil to the prescribed level.

6. Make sure that the transmission fluid doesn't leak past the seal
on the filter.

GENERAL

• To prevent serious damage to the hydraulic system, use
only a KUBOTA genuine filter.

• 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.

(1) Transmission Oil Filter [HST Type]
(2) Dipstick
(3) Oil Inlet

(A) Oil level is acceptable within this

range.

9Y1211012GEG0085US0

G-34

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

GENERAL

Adjusting Toe-in

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.

Toe-in ((B) - (A)) Factory specification

2 to 8 mm

0.08 to 0.31 in.

 Adjusting procedures

1. Loosen the lock nut and turn the turnbuckle to adjust the rod
length until the proper toe-in measurement is obtained.

2. Retighten the lock nut.

Tightening torque Tie-rod lock nut

112.7 to 122.5 N·m

11.5 to 12.5 kgf·m

83.2 to 90.4 lbf·ft

(1) Lock Nuts
(2) Turnbuckle
(3) Tie-rod

[A]) 2WD
[B] 4WD

(A) Wheel to wheel distance at front
(B) Wheel to wheel distance at rear
(C) Front

9Y1211012GEG0091US0

G-35

L3301, L3901, L4701, WSM

CAUTION

IMPORTANT

CAUTION

IMPORTANT

KiSC issued 09, 2016 A

(5) Check Points of Every 400 Hours

Changing Engine Oil

• Be sure to stop the engine before changing the oil.

• Allow engine to cool down sufficiently, oil can be hot and
can burn.

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 ea sily 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.
(Refer to "LUBRICANTS, FUEL AND COOLANT" on page
G-10.)

Engine oil
(with filter)

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

(1) Oil Inlet
(2) Dipstick
(3) Drain Plug

Capacity

GENERAL

6.7 L

7.1 U.S.qts

5.9 lmp.qts

(A) Oil level is acceptable within this

range.

9Y1211012GEG0092US0

Replacing Engine Oil Filter

• Be sure to stop the engine before changing the oil filter
cartridge.

• Allow engine to cool down sufficiently, oil can be hot and
can burn.

1. Remove the oil filter.

2. Put a film of clean engine oil on the rubber seal of th e new filter.

3. Tighten the filter quickly until it contacts the mounting surface.
Tighten filter by hand an additional 1/2 turn only

4. After the new filter has been replaced, the engine oil normally
decreases a little. Make sure that the engine oil does not leak
through the seal and be sure to check the oil level on the
dipstick. Then, replenish the engine oil up to the prescribed
level.

• To prevent serious damage to the engine, use only a
KUBOTA genuine filter.

(1) Engine Oil Filter

9Y1211012GEG0093US0

G-36

L3301, L3901, L4701, WSM

CAUTION

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

Changing Transmission Fluid / Replacing Hydraulic Oil Filter
 Cleaning Magnetic Filter

• Be sure to stop the engine before changing the oil filter
cartridge.

• Allow engine to cool down sufficiently, oil can be hot and
can burn.

1. Remove the drain p lug s at th e bo tt om o f t he t ra ns mis sio n c ase
and drain the oil completely into the oil pan.

2. After draining reinstall the drain plugs.

3. Remove the oil filter.

4. Wipe off metal filings from the magnetic filter with a clean rag.

5. Put a film of clean transmission oil on the rubber seal of the new
filter.

6. Quickly tighten the filter until it contacts the mounting surface,
then tighten it by hand an additional 1/2 turn only.

7. Fill with the new KUBOTA SUPER UDT fluid up to the upper
notch on the dipstick. (Refer to "LUBRICANTS, FUEL AND
COOLANT" on page G-10.)

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 does not leak past the seal
on the filter.

• To prevent serious damage to the hydraulic system, use
only a KUBOTA genuine filter.

• 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.

28.0 L

Transmission oil
capacity

(1) Drain Plug
(2) Hydraulic Oil Filter
(3) Magnetic Filter

(Wipe Off Metal Filings)

2WD

Manual
Transmission

4WD

HST 4WD

[A] 2WD
[B] 4WD

7.4 U.S.gals

6.16 Imp.gals

28.5 L

7.5 U.S.gals

6.27 Imp.gals

23.5 L

6.2 U.S.gals

5.17 Imp.gals

(To be continued)

G-37

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

(Continued)

GENERAL

(4) Dipstick
(5) Oil Inlet

[C] Manual Transmission Type
[D] HST Type
(A) Oil level is acceptable within this

range.

9Y1211012GEG0094US0

G-38

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

GENERAL

Replacing Fuel Filter

1. Remove the fuel filter.

2. Put a film of clean fuel on rubber seal of new filter.

3. Tighten the filter quickly until it contacts the mounting surface.
Tighten filter by hand an additional 1/2 turn only.

4. Bleed the fuel system. (See "Bleeding Fuel System" on page
G-46.)

(1) Fuel Filter

9Y1211012GEG0096US0

Cleaning Water Separator

This job should not be done in the field, but in a clean place.

1. Close the fuel valve.

2. Unscrew the retainer ring and remove the cup, and rinse the
inside with kerosene.

3. Take out the element and dip it in the kerosene to rinse.

4. After cleaning, reassemble the water separator, keeping out
dust and dirt.

5. Bleed the fuel system. (See "Bleeding Fuel System" on page
G-46.)

(1) Fuel Valve
(2) Retainer Ring
(3) Cup
(4) O-ring
(5) Element
(6) Spring
(7) Red Float

A: Close

9Y1211012GEG0097US0

Lubricating Grease Fitting [2WD Model]

(1) Front Wheel Hub Cover

(6) Check Point of Every 600 Hours

Adjusting Front Axle Pivot

vibration can occur causing vibration in the steering wheel.

 Adjusting procedure

then tighten the screw with an additional 1/6 turn. Re-tighten the
lock nut

(1) Adjusting Screw (2) Lock Nut

Detach the cover, and apply bearing grease.

9Y1211012GEG0098US0

If the front axle pivot pin adjustment is not correct, front wheel

Loosen the lock nut, screw-in the adjusting screw until seated,

9Y1211012GEG0099US0

G-39

L3301, L3901, L4701, WSM

CAUTION

KiSC issued 09, 2016 A

(7) Check Point of Every 800 Hours

Adjusting Engine Valve Clearance

• See "Valve Clearance" on page 1-S12.

Changing Front Axle Case Oil
[4WD]

1. To drain the used oil, remove the right and left drain plugs and

2. After draining, reinstall the drain plugs.

3. Gently pour new oil through the filling port. Required oil

4. After filling, reinstall the filling plug.

5. Run the vehicle a few minutes in order for the oil to flow through

6. Remove the oil level check plug and check to see if the oil flows

7. Reinstall and tighten the oil level check plug and filling plug.

Front axle case oil Capacity

GENERAL

9Y1211012GEG0100US0

filling plug at the front axle case and let out the oil completely
into the oil pan.

quantities are written in the table below. Make sure to pour the
specified amounts. If oil overflows before pouring any of the
specified amounts, wait a couple of minutes and try again.
(Refer to "LUBRICANTS, FUEL AND COOLANT" on page
G-10.)

the font axle case.
out of its port. If not, add the oil through the filling port until it

flows out of the oil level check port.

4.5 L

4.8 U.S.qts

4.0 Imp.qts

(1) Check Plug
(2) Filling Plug

(8) Check Points of Every 1500 Hours

Cleaning Fuel Injector Nozzle Tip

• See "Overflow Pipe and injectors" on page 1-S44.

Replacing Oil Separator Element

• Be sure to stop the engine before replacing the oil
separator element.

1. Remove the cover and take out the element. Wipe off oil and the
carbon in the case with a clean rag.

2. Fit a new oil separator element.

3. Tighten the cover.

(1) Oil Separator
(2) Body
(3) Oil Separator Element

Checking PCV (Positive Crankcase Ventilation) Valve

• See "PCV (Positive Crankcase Ventilation) Valve (Oil
Separator)" on page 1-S16.

Checking and Cleaning EGR Cooler

• See "EGR Cooler" on page 1-S16.

(3) Drain Plug

9Y1211012GEG0095US0

9Y1211012GEG0101US0

(4) Gasket
(5) Cover

9Y1211012GEG0102US0

9Y1211012GEG0103US0

9Y1211012GEG0104US0

G-40

L3301, L3901, L4701, WSM

IMPORTANT

NOTE

KiSC issued 09, 2016 A

(9) Check Points of Every 3000 Hours

Checking Supply Pump

• See page "Supply Pump" on page 1-S49.

Checking and Cleaning EGR System

• See "EGR Valve" on page 1-S40.

Cleaning DPF Muffler
 Removal of ash

The longer the DPF operates, the more ash (burnt residue) is
collected in the filter. Too much ash build-up adversely affects the
DPF performance.

• The DPF needs cleaning with a specific cleaning device. Do
not clean the DPF by disassembling, and attempt by
yourself.

(10) Check Points of Every 1000 Hours or 1 year

Replacing Air Cleaner Element

• See "Cleaning Air Cleaner Element [Single Element Type]" on
page G-29.

Checking Exhaust Manifold

• See "EGR Related Parts" on page 1-S40.

GENERAL

9Y1211012GEG0105US0

9Y1211012GEG0106US0

9Y1211012GEG0058US0

9Y1211012GEG0107US0

9Y1211012GEG0108US0

(11) Check Points of Every 1 Year

Checking Antifrost Heater for Oil Separator (if equipped)

• See "Heater Resistance (for Reference)" on page 9-S55.

9Y1211012GEG0198US0

Checking DPF Differential Pressure Sensor Pipe

• See "DPF Muffler" on page 1-S19.

9Y1211012GEG0109US0

Checking EGR Pipe

• See "EGR Related Parts" on page 1-S40.

9Y1211012GEG0110US0

Checking 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.

• If the fuel line is removed, be sure to prope rly bleed the fuel
system. (See page G-46.)

(1) Fuel Lines (2) Clamp Bands

9Y1211012GEG0079US0

G-41

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

GENERAL

Checking 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.

 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. Do not 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.

(1) Radiator Hoses (2) Clamp Bands

9Y1211012GEG0086US0

Checking Oil Cooler Line
[HST Type]

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) Oil Cooler (2) Oil Cooler Line

9Y1211012GEG0087US0

Checking 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) Hose (2) Hose Clamps

9Y1211012GEG0088US0

Checking Oil Separator Hose

1. Check to see that all 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) Oil Separator Hoses

9Y1211012GEG0089US0

G-42

L3301, L3901, L4701, WSM

CAUTION

IMPORTANT

KiSC issued 09, 2016 A

Checking Power Steering Line
[Manual Transmission Type]

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

(12) Check Points of Every 2000 Hours or 2 Years

Flushing Cooling System and Changing Coolant

To avoid personal injury:

• 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. Stop the engine, remove the key and let it cool down.

2. To drain the coolant, open the radiator drain plug and remove
radiator cap. The radiator cap must be removed to completely
drain the coolant.

3. After all coolant is drained, reinstall the drain plug.

4. Fill with clean soft water and cooling system cleaner.

5. Follow directions of the cleaner instruction.

6. After flushing, fill with clean soft water and anti-freeze until the
coolant level is just below the radiator cap.
Install the radiator cap securely.

7. Fill with coolant up to the "FULL" mark of recovery tank.

8. Start and operate the engine for fe w min ute s.

9. Stop the engine, remove the key and let cool.

10. Check coolant level of recovery tank and add coolant if
necessary.

11. Properly dispose of used coolant.

GENERAL

9Y1211012GEG0090US0

• Do not start engine without coolant.

• Use clean, fresh soft water and anti-freeze to fill the radiator
and recovery tank.

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

• Securely tighten radiator cap. If the cap is loose or
improperly fitted, water may leak out and the engine could
overheat.

6.0 L

Radiator coolant

Recovery tank
coolant

(1) Drain Plug
(2) Radiator Cap
(3) Recovery Tank

Capacity

A: FULL
B: LOW

6.3 U.S.qts

5.3 Imp.qts

0.6 L

0.6 U.S.qts

0.5 Imp.qts

9Y1211012GEG0111US0

G-43

L3301, L3901, L4701, WSM

CAUTION

KiSC issued 09, 2016 A

GENERAL

Anti-Freeze

To avoid personal injury:

• When using antifreeze, put on some protection such as
rubber gloves. (Antifreeze contains poison.)

• If it is swallowed, seek immediate medical help. Do NOT
make a person throw up unless told to do so by poison
control or a health care professional. Use standard first aid
and CPR for signs of shock or cardiac arrest. Call your
local Poison Control Center or your local emergency
number for further assistance.

• When antifreeze comes in contact with the skin or clothing,
wash it off immediately.

• Do not mix different types of antifreeze.
The mixture can produce chemical reaction causing
harmful substances.

• Antifreeze is extremely flammable and explosive under
certain conditions. Keep fire and children away from
antifreeze.

• When draining fluids from the engine, place some
container underneath the engine body.

• Do not pour waste onto the grounds, down a drain, or into
any water source.

• Also, observe the relevant environmental protection
regulations when disposing of antifreeze.

Always use a 50/50 mix of long-life coolant and clean soft water

in KUBOTA engines.

1. Long-life coolant (hereafter LLC) comes in several types. Use
ethylene glycol (EG) type for this engine.

2. Before employing LLC-mixed cooling water, fill the radiator with
fresh water and empty it again.
Repeat this procedure 2 or 3 times to clean up the inside.

3. Mixing the LLC
Premix 50 % LLC with 50 % clean soft water. When mixing, stir
it up well, and then fill into the radiator.

4. The procedure for the mixing of water and antifreeze differs
according to the make of the antifreeze and the ambient
temperature. Refer to SAE J1034 standard, more specifically
also to SEA J814c.

Vol %

Anti-freeze

50 −37 −34 108 226

*At 1.013 × 105 Pa (760 mmHg) pressure (atmospheric). A higher boiling point is
obtained by using a radiator pressure cap which permits the development of
pressure within cooling system.

Freezing Point Boiling Point*

°C °F °C °F

(To be continued)

G-44

L3301, L3901, L4701, WSM

NOTE

KiSC issued 09, 2016 A

(Continued)

5. Adding the LLC

6. When the LLC is mixed, do not employ any radiator cleaning

7. Kubota's genuine long-life coolant has a service life of 2 years.

• The above data represent industry standards that

(13) Check Points of Every 2 Years

Replacing Fuel Grommet

• Refer to "Checking Fuel Grommet". (See page G-30.)

Replacing DPF Differential Pressure Sensor Hose

• Refer to "DPF Muffler". (See page 1-S19.)

GENERAL

a) Add only water if the mixture reduces in amount by

evaporation

b) If there is a mixture leak, add the LLC of the same

manufacturer and type in the same mixture percentage.
*Never add any long-life coolant of different manufacturer.
(Different brands may have different additive components,
and the engine may fail to perform as specified.)

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

Be sure to change the coolant every 2 years.

necessitate a minimum glycol content in the concentrated
antifreeze.

9Y1211012GEG0112US0

9Y1211012GEG0116US0

9Y1211012GEG0120US0

(14) Check points of Every 4 Years

Replacing Radiator Hose (Water pipes)

• Replace the hoses and clamps.

Replacing Power Steering Hose
[Manual Transmission Type]

• Replace the hoses and clamps.

Replacing Fuel Hose

• Replace the fuel hoses and clamps.

Replacing Oil Cooler Line
[HST Type]

• Refer to "Checking Oil Cooler Line". (See page G-42.)

Replacing Intake Air Line

• Replace the intake hoses and clamps.

Replacing Oil Separator Hose

• Refer to "Checking Oil Separator Hose". (See page G-42.)

Refer to "Checking Radiator Hose and Hose Clamp". (See page
G-42.)

9Y1211012GEG0113US0

Refer to "Checking Oil Cooler Line". (See page G-42.)

9Y1211012GEG0114US0

Refer to "Checking Fuel Line". (See page G-41.)

9Y1211012GEG0115US0

9Y1211012GEG0117US0

Refer to "Checking Intake Air Line". (See page G-42.)

9Y1211012GEG0118US0

9Y1211012GEG0119US0

G-45

L3301, L3901, L4701, WSM

IMPORTANT

KiSC issued 09, 2016 A

(15) Others

GENERAL

Bleeding Fuel System

Air must be removed:

1. When the fuel filter or lines are removed.

2. When water is drained from water separator.

3. When tank is completely empty.

4. After the tractor has not been used for a long period of time.

 Bleeding procedure is as follows:

1. Fill the fuel tank with fuel, and open the fuel valve (1).

2. Loosen the air vent plug on the fuel filter 2 turns or so.

3. Turn on the key switch and wait for about 1 minute. Then tighten
up the air vent plug.

4. Set the hand throttle lever at the minimum speed position and
turn the key to "START" position.
If the engine does not start, try it seve ral times at 30 second
intervals.

• Do not hold key switch at engine start position for more
than 10 seconds continuously. If more engine cranking is
needed, try again after 30 seconds.

5. Accelerate the engine to remove the small portion of air left in
the fuel system.

6. If air still remains and the engine stops, repeat the above steps.

(1) Fuel Valve
(2) Air Vent Valve

A: Close
B: Open

9Y1211012GEG0121US0

Draining Clutch Housing Water

1. The tractor is equipped with split pin plug (1) under the clutch
housing.
After operating in rain, snow or tractor has been washed, water
may get into the clutch housing.
Check it by pushing in the split pin plug (1).

2. If water has entered into the clutch housing, remove the split pin
plug (1) and drain the water, then reinstall the plug again.

(1) Split Pin Plug

9Y1211012GEG0122US0

G-46

L3301, L3901, L4701, WSM

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

Replacing Fuse

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

2. If any of the fuses should blow, replace with a new one of the
same capacity.

• Before replacing a blown fuse, determine why the fuse blew
and make any necessary repairs. Failure to follow this
procedure may result in serious damage to the tractor
electrical system. Refer to "1. TROUBLESHOOTING" on
page 9-S1.
If any of them should blow, replace with a new one of the
same capacity.

Fuse No. Capacity (A) Protected circuit

(1) 5 Engine ECU (Ignition key)
(2) 5 Main ECU (Ignition key)
(3) 5 Meter panel (Ignition key)
(4) 10 Combination switch
(5) 10 Work light
(6) 5 Starter relay
(7) 20 Engine ECU (Battery)
(8) 5 Main ECU (Battery)

(9) 5 Meter panel (Battery)
(10) 10 Hazard
(11) 5 Heater relay (if equipped)
(12) 10 Heater (Oil separator, IN 1) (if equipped)
(13) 10 Heater (Oil separator, IN 2) (if equipped)
(14) 10 Heater (Oil separator, OUT 1) (if equipped)
(15) 10 Heater (Oil separator, OUT 2) (if equipped)

(16) Spare Fuse
(17) Fuse Puller

(18) Spare fuse

9Y1211012GEG0123US0

Replacing Slow-Blow Fuses

1. The slow-blow fuses are intended to protect the electrical
cabling. If any of them has blown out, be sure to pinpoint the
cause. Never use any substitute, use only a KUBOTA genuine
part.

No. Capacity (A) Protected circuit

(1) 40 Load
(2) 50 Battery
(3) 40 Heater (Oil separator) (if equipped)

9Y1211012GEG0124US0

Replacing Light Bulb

Light Capacity

Head lights 25 W / 25 W
Tail light 5 W
Turn signal / Hazard light (rear) 21 W
Turn signal / Hazard light (front) 23 W

9Y1211012GEG0125US0

G-47

L3301, L3901, L4701, WSM

CAUTION

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

Replacing Head Lamp

To avoid personal injury:

• Be careful not to drop the bulb, hit anything against the
lamp, apply excess force, and get the lamp scratched. If
broken, glass may cause injury.

• Before replacing the lamp, be sure to turn off the light and
wait until the bulb cools down, otherwise, you may get
burned.

 Removing Bulb

1. Remove the rubber boot.

2. Turn the socket counterclockwise while pressing and remove it.

3. Remove the bulb.

 Attaching Bulb

1. Align (A) of the bulb with (B) of the lamp case and attach the
bulb.

2. Align (C) of the socket with (D) of the lamp case and attach the
socket.

3. Attach the rubber boot.

• Be sure to use a new bulb of the specified wattage.

• Never touch the bulb surface (glass) with bare hands.
Fingerprints, for example, may break the bulb.

(1) Rubber Boot
(2) Socket
(3) Bulb
(4) Lamp Case

(A) Align to (B)
(C) Align to (D)

9Y1211012GEG0126US0

Replacing Radiator Hose (Water pipes)

• Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred.
Refer to "Checking Radiator Hose and Hose Clamp". (See page
G-42.)

9Y1211012GEG0199US0

Replacing Fuel Lines

• Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred.
Refer to "Checking Fuel Line". (See page G-41.)

9Y1211012GEG0200US0

Replacing Intake Air Line

• Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred.
Refer to "Checking Intake Air Line". (See page G-42.)

9Y1211012GEG0201US0

Replacing Power Steering Hose

• Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred.
Refer to "Checking HST Oil Line and Power Steering Oil Line".
(See page G-42.)

9Y1211012GEG0202US0

Replacing Oil Cooler Line

• Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred.
Refer to "Checking HST Oil Line and Power Steering Line".
(See page G-42.)

9Y1211012GEG0203US0

G-48

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

GENERAL

Replacing Oil Separator Hose

• Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred. (See page G-42.)

9Y1211012GEG0204US0

G-49

L3301, L3901, L4701, WSM

CAUTION

CAUTION

CAUTION

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

[2] L4701

• Be sure to check and service the tractor on a flat place with engine shut o ff and pull the park ing brake on
and chock the wheels.

9Y1211012GEG0054US0

(1) Daily Check

To prevent trouble from occurrin g, it is important to kn ow the condition of the tractor. C heck the following items

before starting.

To avoid personal injury:
Take the following precautions when checking the tractor.

• Park the machine on firm and level ground.

• Set the parking brake.

• Lower the implement to the ground.

• All residual pressure of the hydraulic system released.

• Stop the engine and remove the key.

9Y1211012GEG0055US0

Walk 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.

9Y1211012GEG0056US0

Checking and Refueling

• Do not smoke while refueling.

• Be sure to stop the engine before refueling.

1. Turn the key switch to "ON", check the amount of fuel by fuel
gauge.

2. Fill fuel tank when fuel gauge shows 1/4 or less fuel in tank.

51 L

Fuel tank Capacity

13.5 U.S.gals

11.2 Imp.gals

• Do not permit dirt or trash to get into the fuel system.

• Be careful not to let the fuel t ank become e mpty, ot herwise
air will enter the fuel system, necessitating blee ding before
next engine start.

• Be careful not to spill during refueling. If a spill should
occur, wipe it off at once, or it may cause a fire.

• To prevent condensation (water) accumulation in the fuel
tank, fill the tank before parking overnight.

(1) Fuel Tank Cap

9Y1211012GEG0127US0

G-50

L3301, L3901, L4701, WSM

IMPORTANT

CAUTION

IMPORTANT

NOTE

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

Checking 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
valve, 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.

• If water is drawn through to the fuel pump, extensive
damage will occur.

(1) Red Float
(2) Fuel Valve
(3) Retainer Ring
(4) Cup

A: White Line

9Y1211012GEG0128US0

Checking Engine Oil Level

• 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.
(Refer to "LUBRICANTS, FUEL AND COOLANT" on page
G-11.)

• 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.

• If oil level is low, do not run engine.

• 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.

(1) Oil Inlet
(2) Dipstick

(A) Oil level is acceptable within this

range.

9Y1211012GEG0129US0

Checking 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.
(Refer to "LUBRICANTS, FUEL AND COOLANT" on page
G-11.)

• If oil level is low, do not run engine.

(1) Dipstick
(2) Oil Inlet

(A) Oil level is acceptable within this

range.

9Y1211012GEG0130US0

G-51

L3301, L3901, L4701, WSM

CAUTION

IMPORTANT

CAUTION

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

Checking Coolant Level

• Do not remove radiator cap while coolant is hot. When cool,
slowly rotate cap to the fi rst stop and allow sufficient time
for excess pressure to escape before removing the cap
completely.

1. Check to see that th e c oo la nt 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.
(Refer to "LUBRICANTS, FUEL AND COOLANT" on page
G-11.)

3. When the coolant level is lower than "LOW" mark of recovery
tank, remove the radiator cap and check to see that the coo lant
level is just below the port. If level is low, add coolant.

• If the radiator cap has to be removed, follow the caution
above and securely retighten the cap.

• Use clean, fresh soft water and anti-freeze to fill the
radiator.

(1) Recovery Tank A: Full

B: Low

9Y1211012GEG0131US0

Cleaning Evacuator Valve

1. Open the evacuator valve to get rid of large particles of dust an d
dirt.

(1) Evacuator Valve

9Y1211012GEG0132US0

Cleaning Grill and Radiator Screen

• Be sure to stop the engine before removing the screen.

• Before checking or cleaning the radiator screen, stop the
engine and wait long enough until it is cooled down.

1. Check front grill and side screens to be sure they are clean of
debris.

2. Detach the screen with the fixed spring being held up and
remove all foreign materials and clean the front of radiator
completely.

• Grill and screen must be clean from debris to prevent
engine from overheating and to allow good air intake for
the air cleaner.

(1) Radiator Screen
(2) Fixed Spring
(3) Oil Cooler [HST Type]
(4) Fuel Cooler

A: Hold Up
B: Detach

9Y1211012GEG0133US0

G-52

L3301, L3901, L4701, WSM

CAUTION

CAUTION

CAUTION

KiSC issued 09, 2016 A

GENERAL

Checking DPF Muffler

• Before checking or cleaning the DPF muffler, stop the
engine and wait long enough until it is cooled down.

1. Check the DPF muffler and its surroundings for build-up of
anything flammable. Otherwise a fire may result.

(1) DPF Muffler

9Y1211012GEG0134US0

Checking Brake Pedal
[HST Type]

• 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 page G-59.)

9Y1211012GEG0135US0

Checking Brake Pedals and Clutch Pedal
[Manual Transmission Type]

• 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 and clutch pedals for free travel, and smooth
operation.

2. Adjust if incorrect measurement is found. (See "Adjusting
Clutch Pedal" on page G-59 or "Adjusting Brake Pedal" on page
G-59.)

9Y1211012GEG0136US0

Checking Gauges, Meter and Easy Checker™

1. Inspect the instrument panel for broken gauge(s), meter(s) and
Easy Checker™ lamps.

2. Replace if broken.

9Y1211012GEG0137US0

Checking Head Light, Turn Signal / Hazard Light etc.

1. Inspect the lights for broken bulbs and lenses.

2. Replace if broken.

9Y1211012GEG0138US0

Checking Seat Belt and ROPS

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

2. Replace if damaged.

9Y1211012GEG0139US0

G-53

L3301, L3901, L4701, WSM

CAUTION

KiSC issued 09, 2016 A

GENERAL

Checking and Cleaning of Electrical Wiring and Battery Cables

• A loosened terminal or connector, or damaged wire may
affect the performance of electrical components or cause
short circuits. Leakage of electricity could result in a fire
hazard, a dead battery or damage to electrical components.

• Replace damaged wires or connections promptly.

• If a fuse blows soon after replacement, DO NOT USE A
LARGER THAN RECOMMENDED FUSE OR BYPASS THE
FUSE SYSTEM.

• Many wiring connections are protected by waterproof
plugs, plug and unplug these connections carefully and
make sure they are sealed correctly after assembly.

• Accumulation of dust, chaff and spilled fuel deposits
around the battery, electrical wiring, engine or exhaust
system are fire hazards. CLEAN THESE AREAS BEFORE
STARTING WORK.
To avoid premature electrical malfunctions DO NOT APPLY
high pressure water directly to battery, wiring, conne ctors,
electrical components or instrument panel.

Inspect the following regularly:

1. Check wiring for chafed or cracked insulation.

2. Check wiring harness clamps. Replace if necessary.

3. Check connectors a nd terminals for looseness, contamin ation
or overheated (discolored) connections.

4. Check instrument panel for correct operation of switches and
gauges.

9Y1211012GEG0140US0

Checking 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.

9Y1211012GEG0141US0

G-54

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

(2) Check Points of Every 50 Hours

Lubricating Grease Fittings

1. Apply a small amount of multipurpose grease to the following

2. When apply grease to forward front axle support, remove the

GENERAL

points every 50 hours:
If you operated the machine in extremely wet and muddy
conditions, lubricate grease fittings mor e of te n.

breather plug and apply grease until grease overflows from
breather plug port.

(1) Grease Fitting

(Knuckle Shaft) [RH, LH]

(2) Grease Fitting

(Front axle support)
(3) Breather
(4) Grease Fitting (Top Link)
(5) Grease Fitting (Lifting Rod) [RH]
(6) Grease Fitting (Top link bracket)

(with draft control) (if equipped)

(7) Grease fitting (Hydraulic arm axle)
(8) Battery terminals
(9) Grease fitting (Tie-rod ends)

[A] 2WD
[B] 4WD

9Y1211012GEG0142US0

G-55

L3301, L3901, L4701, WSM

CAUTION

CAUTION

KiSC issued 09, 2016 A

GENERAL

Checking Engine Start System

• Do not allow anyone near the tractor while testing.

• If the tractor does not pass the test, do not operate the
tractor.

 Preparation before testing

1. Place all control levers in the "NEUTRAL" position.

2. Set the parking brake and stop the engine.

[Manual Transmission Type]
 Test: Switch for the shuttle shift lever.

1. Sit on the operator's seat.

2. Shift the shuttle shift lever to the forward or reverse position.

3. Depress the clutch pedal fully.

4. Disengage the PTO clutch control switch or lever.

5. Turn the key to "START" position.

6. The engine must not crank.

 Test: Switch for the PTO clutch control switch or lever.

1. Sit on the operator's seat.

2. Engage the PTO clutch control switch or lever.

3. Depress the clutch pedal fully.

4. Shift the shuttle shift lever to the neutral position.

5. Turn the key to "START" position.

6. The engine must not crank.

[HST Type]
 Test: Switch for the speed control pedal.

1. Sit on the operator's seat.

2. Depress the speed control pedal to the desired direction.

3. Disengage the PTO clutch control switch or lever.

4. Turn the key to "START" position.

5. The engine must not crank.

 Test: Switch for the PTO clutch control switch or lever.

1. Sit on the operator's seat.

2. Engage the PTO clutch control switch or lever.

3. Place the speed control pedal in ne ut ra l pos ition .

4. Turn the key to "START" position.

5. The engine must not crank.

(1) Shuttle Shift Lever
(2) Clutch Pedal
(3) PTO Clutch Control Switch
(4) Speed Control Pedal

[A] Manual Transmission Type
[B] HST Type

9Y1211012GEG0143US0

Checking Operator Presence Control

• Do not allow anyone near the tractor while testing.

• If the tractor does not pass the test, do not operate the
tractor.

 Preparation before testing

1. Place all control levers in the "NEUTRAL" position.

2. Set the parking brake and stop the engine.

 Test: Switch for the operator's seat.

1. Sit on the operator's seat.

2. Start the engine.

3. Engage the PTO clutch control switch or lever.

4. Stand up. (Do not get off the machine.)

5. The engine must shut off after approximately 1 second.

(1) PTO clutch control switch

9Y1211012GEG0144US0

G-56

L3301, L3901, L4701, WSM

CAUTION

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

Checking Wheel Bolt Torque

• Never operate tractor with a loose rim, wheel, or axle.

• Any time bolts and nuts are loosened, retighten to
specified torque.

• Check all bolts and nuts frequently and keep them tight.

1. Check wheel bolts and nuts regularly especially when new. If
they are loose, tighten them as follows.

Front Wheel Mounting Nut

Tightening torque

Rear Wheel Mounting
Screw and Nut

124.0 to 147.0 N·m

12.6 to 15.0 kgf·m

91.5 to 108.4 lbf·ft

196.0 to 225.0 N·m

20.0 to 23.0 kgf·m

144.6 to 166.0 lbf·ft

(1) Front Wheel Mounting Nut (2) Rear Wheel Mounting Screw and

Nut

9Y1211012GEG0145US0

Checking Tie-rod Dust Cover

1. Check to see that dust covers are not damaged.

• If dust covers are cracked, water and dust invade into
tie-rod and it will be early wear.

(1) Dust Cover [A] 2WD

[B] 4WD

9Y1211012GEG0146US0

G-57

L3301, L3901, L4701, WSM

NOTE

IMPORTANT

CAUTION

KiSC issued 09, 2016 A

(3) Check Points of Every 100 Hours

Cleaning Air Cleaner Primary Element

1. Remove the air cleaner cover and primary element.

2. Clean the primary element:
– When dry dust adheres to the element, blow compressed air

– When carbon or oil adheres to the element, soak the

3. Replace air cleaner primary element:
Once yearly or after every sixth cleaning, whichever comes first.

• Check to see if the evacuator valve is blocked with dust.

• The air cleaner uses a dry element, never apply oil.

• Do not run the engine with filter element removed.

• 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.

• Do not touch the secondary element except in cases where
replacing is required.
(See "Replacing Air Cleaner Secondary Element" in "Check
Points of Every 1 year" on page G-68.)

 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.

(1) Secondary (Safety) Element
(2) Primary Element

Adjusting Fan Belt Tension

GENERAL

from the inside, turning the element. Pressure of
compressed air must be under 205 kPa (2.1 kgf/cm
30 psi).

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) Evacuator Valve
(4) Cover

9Y1211012GEG0147US0

2

,

• Be sure to stop the engine before checking 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 12 mm
(0.48 in.) when the belt is

Fan belt tension Factory specification

(1) Bolt A: Check the belt tension

B: To tighten

pressed

68.6 N (7 kgf, 15.4 lbf) in
the middle of the span.

9Y1211012GEG0148US0

G-58

L3301, L3901, L4701, WSM

CAUTION

KiSC issued 09, 2016 A

GENERAL

Checking Fuel Grommet

1. Check the grommets for cracks an d fu el lea k.

2. If any of such problems is found, replace the grommet(s) with
new one(s).

(1) Fuel Grommet

9Y1211012GEG0150US0

Adjusting Clutch Pedal
[Manual Transmission Type]

 Adjusting procedure

1. Stop the engine and remove the key.

2. Slightly depress the clutch pedal 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.

Clutch pedal free travel

"A"

Factory specification

20 to 30 mm (0.8 to 1.2 in)
on the pedal

(1) Lock Nut
(2) Turnbuckle

A: Free Travel

9Y1211012GEG0151US0

Adjusting Brake Pedal

• Stop the engine and chock the wheels before checking
brake pedal.

1. Release the parking brake.

2. Slightly depress the brake pedals and measure free travel at 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.

15 to 20 mm (0.6 to 0.8 in.)

Brake pedal free travel

"A"

(1) Lock Nut
(2) Brake Rod

Factory specification

[A] Manual Transmission Type
[B] HST Type
A: Free Travel

on the pedal
Keep the free travel in the

right and left brake pedals
equal.

9Y1211012GEG0152US0

G-59

L3301, L3901, L4701, WSM

DANGER

CAUTION

NOTE

KiSC issued 09, 2016 A

GENERAL

Checking Battery Condition

To avoid the possibility of battery explosion:
For the refillable type battery, follow the instructions below.

• 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.

• Never remove the battery cap while the engine is running.

• Keep electrolyte away from eyes, hands and clothes. If you
are spattered with it, wash it away completely with water
immediately and get medical attention.

• Keep open sparks and flames away from the battery at all
times. Hydrogen gas mixed with oxygen becomes very
explosive.

• Wear eye protection and rubber gloves when working
around battery.

• 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.

 How to read the indicator

Check the battery condition by reading the indicator.

State of indicator display

Green

Black Needs charging battery.
White Needs replacing battery.

(1) Battery (2) Indicator

Specific gravity of electrolyte and quality of electrolyte
are both in good condition.

9Y1211012GEG0153US0

Battery Cable Connections

1. Be sure to wire the battery cable as shown in th e figu re.

2. Tighten the terminal until the stopper comes in contact.

(1) Negative Cable
(2) Positive Cable
(3) Terminal
(4) Stopper

(A) Correct
(B) Incorrect

9Y1211012GEG0057US0

G-60

L3301, L3901, L4701, WSM

CAUTION

KiSC issued 09, 2016 A

GENERAL

Battery Charging

• 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.

• When charging the battery, ensure the vent caps are
securely in place. (if equipped)

• 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.

• Never check battery charge by placing a metal object
across the posts.
Use a voltmeter or hydrometer.

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 dis play turns green fro m
black.

4. When exchanging an old battery for a new one, use battery of
equal specification shown in table 1.

Table 1

Battery Type Volt (V)

80D26R 12 120 600 7.5

Reserve
capacity

(min.)

Cold

Cranking

Ampere

(SAE) (A)

Normal

Charging

Rate (A)

 Direction for Storage

1. When storing the tractor for long periods of time, remove the
battery from tractor, adjust the electrolyte to the proper leve l and
store in a dry place out of direct sunlight.

2. The battery self-dischar ges while it is stored.
Recharge it once every 3 months in hot seasons and once every
6 months in cold seasons.

(1) Battery

9Y1211012GEG0154US0

G-61

L3301, L3901, L4701, WSM

CAUTION

IMPORTANT

KiSC issued 09, 2016 A

(4) Check Points of Every 200 Hours

Replacing Transmission Oil Filter [HST Type]

• Be sure to stop the engine before changing the oil filter
cartridge.

• Allow engine to cool down sufficiently, oil can be hot and
can burn.

1. Place the oil pan underneath the transmission oil filter and
remove the filter.
Do not remove the hydraulic oil filter. Otherwise, the oil comes
out.

2. Put a film of clean transmission oil on the rubber seal of the new
filter.

3. Quickly tighten the filter until it contacts the mounting surface,
then, with a filter wrench, tighten it an additional 1 turn only.

4. After the new filter has been replaced, fill the transmission oil up
to the upper notch on the dipstick.

5. After running the engine for a few minutes, stop the engine and
check the oil level again, add oil to the prescribed level.

6. Make sure that the transmission fluid does not leak past the seal
on the filter.

GENERAL

• To prevent serious damage to the hydraulic system, use
only a KUBOTA genuine filter.

• 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.

(1) Transmission Oil Filter [HST Type]
(2) Dipstick
(3) Oil Inlet

(A) Oil level is acceptable within this

range.

9Y1211012GEG0155US0

G-62

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

GENERAL

Adjusting Toe-in

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.

Toe-in ((B) - (A)) Factory specification

2 to 8 mm

0.08 to 0.31 in.

 Adjusting procedures [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.

 Adjusting procedures [4WD]

1. Loosen the tie-rod nut.

2. Turn the tie-rod joint to adjust the rod length until the proper
toe-in measurement is obtained.

3. Retighten the tie-rod nut.

2WD

Tightening torque Tie-rod nut

4WD

83.3 to 88.2 N·m

8.5 to 9.0 kgf·m

61.4 to 65 lbf·ft
167 to 196 N·m

17 to 20 kgf·m

123.2 to 144.6 lbf·ft

(1) Tie-rod nut
(2) Tie-rod joint
(3) Snap ring

[A]) 2WD
[B] 4WD

(A) Wheel to wheel distance at front
(B) Wheel to wheel distance at rear
(C) Front

9Y1211012GEG0161US0

G-63

L3301, L3901, L4701, WSM

CAUTION

IMPORTANT

CAUTION

IMPORTANT

KiSC issued 09, 2016 A

(5) Check Points of Every 400 Hours

Changing Engine Oil

• Be sure to stop the engine before changing the oil.

• Allow engine to cool down sufficiently, oil can be hot and
can burn.

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 ea sily 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.
(Refer to "LUBRICANTS, FUEL AND COOLANT" on page
G-11.)

Engine oil with filter Capacity

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

(1) Oil Inlet
(2) Dipstick
(3) Drain Plug

GENERAL

8.2 L

8.7 U.S.qts

7.2 lmp.qts

(A) Oil level is acceptable within this

range.

9Y1211012GEG0162US0

Replacing Engine Oil Filter

• Be sure to stop the engine before changing the oil filter
cartridge.

• Allow engine to cool down sufficiently, oil can be hot and
can burn.

1. Remove the oil filter.

2. Put a film of clean engine oil on the rubber seal of th e new filter.

3. Tighten the filter quickly until it contacts the mounting surface.
Tighten filter by hand an additional 1/2 turn only

4. After the new filter has been replaced, the engine oil normally
decreases a little. Make sure that the engine oil does not leak
through the seal and be sure to check the oil level on the
dipstick. Then, replenish the engine oil up to the prescribed
level.

• To prevent serious damage to the engine, use only a
KUBOTA genuine filter.

(1) Engine Oil Filter

9Y1211012GEG0163US0

G-64

L3301, L3901, L4701, WSM

CAUTION

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

Changing Transmission Fluid / Replacing Hydraulic Oil Filter
 Cleaning Magnetic Filter

• Be sure to stop the engine before changing the oil filter
cartridge.

• Allow engine to cool down sufficiently, oil can be hot and
can burn.

1. Remove the drain p lug s at th e bo tt om o f t he t ra ns mis sio n c ase
and drain the oil completely into the oil pan.

2. After draining reinstall the drain plugs.

3. Remove the oil filter.

4. Wipe off metal filings from the magnetic filter with a clean rag.

5. Put a film of clean transmission oil on the rubber seal of the new
filter.

6. Quickly tighten the filter until it contacts the mounting surface,
then tighten it by hand an additional 1/2 turn only.

7. Fill with the new KUBOTA SUPER UDT fluid up to the upper
notch on the dipstick. (Refer to "LUBRICANTS, FUEL AND
COOLANT" on page G-11.)

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 does not leak past the seal
on the filter.

• To prevent serious damage to the hydraulic system, use
only a KUBOTA genuine filter.

• 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.

40.0 L

Transmission oil Capacity

(1) Drain Plug
(2) Hydraulic Oil Filter
(3) Magnetic Filter

(Wipe Off Metal Filings)
(4) Dipstick
(5) Oil Inlet

[A] Manual Transmission Type
[B] HST Type

(A) Oil level is acceptable within this

10.6 U.S.gals

8.80 Imp.gals

range.

9Y1211012GEG0164US0

G-65

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

GENERAL

Replacing Fuel Filter

1. Remove the fuel filter.

2. Put a film of clean fuel on rubber seal of new filter.

3. Tighten the filter quickly until it contacts the mounting surface.
Tighten filter by hand an additional 1/2 turn only.

4. Bleed the fuel system. (See "Bleeding Fuel System" on page
G-74.)

(1) Fuel Filter

9Y1211012GEG0166US0

Cleaning Water Separator

This job should not be done in the field, but in a clean place.

1. Close the fuel valve.

2. Unscrew the retainer ring and remove the cup, and rinse the
inside with kerosene.

3. Take out the element and dip it in the kerosene to rinse.

4. After cleaning, reassemble the water separator, keeping out
dust and dirt.

5. Bleed the fuel system. (See "Bleeding Fuel System" on page
G-74.)

(1) Fuel Valve
(2) Retainer Ring
(3) Cup
(4) O-ring
(5) Element
(6) Spring
(7) Red Float

A: Close

9Y1211012GEG0167US0

Lubricating Grease Fitting [2WD Model]

(1) Front Wheel Hub Cover

(6) Check Point of Every 600 Hours

Adjusting Front Axle Pivot

vibration can occur causing vibration in the steering wheel.

 Adjusting procedure

then tighten the screw with an additional 1/6 turn. Re-tighten the
lock nut

(1) Adjusting Screw (2) Lock Nut

Detach the cover, and apply bearing grease.

9Y1211012GEG0168US0

If the front axle pivot pin adjustment is not correct, front wheel

Loosen the lock nut, screw-in the adjusting screw until seated,

9Y1211012GEG0169US0

G-66

L3301, L3901, L4701, WSM

CAUTION

KiSC issued 09, 2016 A

(7) Check Point of Every 800 Hours

Adjusting Engine Valve Clearance

• See "Valve Clearance" on page 1-S12.

Changing Front Axle Case Oil
[4WD]

1. To drain the used oil, remove the right and left drain plugs and

2. After draining, reinstall the drain plugs.

3. Remove the oil level check plug

4. Fill with the new oil up to the check plug port.

5. After filling reinstall the filling plug and check plug.

Front axle case oil Capacity

GENERAL

9Y1211012GEG0100US0

filling plug at the front axle case and drain the oil completely into
the oil pan.

(Refer to "LUBRICANTS, FUEL AND COOLANT" on page
G-11.)

6.5 L

6.9 U.S.qts

5.7 Imp.qts

(1) Check Plug
(2) Filling Plug

(8) Check Points of Every 1500 Hours

Cleaning Fuel Injector Nozzle Tip

• See "Overflow Pipe and injectors" on page 1-S44.

Replacing Oil Separator Element

• Be sure to stop the engine before replacing the oil
separator element.

1. Remove the cover and take out the element. Wipe off oil and the
carbon in the case with a clean rag.

2. Fit a new oil separator element.

3. Tighten the cover.

(1) Oil Separator
(2) Body
(3) Oil Separator Element

Checking PCV (Positive Crankcase Ventilation) Valve

• See "PCV (Positive Crankcase Ventilation) Valve (Oil
Separator)" on page 1-S16.

Checking and Cleaning EGR Cooler

• See "EGR Cooler" on page 1-S16.

(3) Drain Plug

9Y1211012GEG0165US0

9Y1211012GEG0101US0

(4) Gasket
(5) Cover

9Y1211012GEG0172US0

9Y1211012GEG0103US0

9Y1211012GEG0104US0

G-67

L3301, L3901, L4701, WSM

IMPORTANT

NOTE

KiSC issued 09, 2016 A

(9) Check Points of Every 3000 Hours

Checking Supply Pump

• See page "Supply Pump" on page 1-S49.

Checking and Cleaning EGR System

• See "EGR Valve" on page 1-S40.

Cleaning DPF Muffler
 Removal of ash

The longer the DPF operates, the more ash (burnt residue) is
collected in the filter. Too much ash build-up adversely affects the
DPF performance.

• The DPF needs cleaning with a specific cleaning device. Do
not clean the DPF by disassembling, and attempt by
yourself.

(10) Check Points of Every 1000 Hours or 1 year

Replacing Air Cleaner Primary Element and Secondary
Element

• See "Cleaning Air Cleaner Primary Element" on page G-58.

Checking Exhaust Manifold

• See "EGR Related Parts" on page 1-S40.

GENERAL

9Y1211012GEG0105US0

9Y1211012GEG0106US0

9Y1211012GEG0058US0

9Y1211012GEG0177US0

9Y1211012GEG0108US0

(11) Check Points of Every 1 Year

Checking DPF Differential Pressure Sensor Pipe

• See "DPF Muffler" on page 1-S19.

9Y1211012GEG0109US0

Checking EGR Pipe

• See "EGR Related Parts" on page 1-S40.

9Y1211012GEG0110US0

Checking Antifrost Heater for Oil Separator (if equipped)

• See "Heater Resistance (for Reference)" on page 9-S55.

9Y1211012GEG0205US0

Checking 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.

• If the fuel line is removed, be sure to properly bleed the fuel
system. (See page G-74.)

(1) Fuel Lines (2) Clamp Bands

9Y1211012GEG0149US0

G-68

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

GENERAL

Checking 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.

 Precautio n 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. Do not 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, refer to "1.
TROUBLESHOOTING" on page 1-S1, and then, start again the
engine.

(1) Radiator Hoses (2) Clamp Bands

9Y1211012GEG0156US0

Checking Oil Cooler Line
[HST Type]

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) Oil Cooler (2) Oil Cooler Line

9Y1211012GEG0157US0

Checking 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) Hose (2) Hose Clamps

9Y1211012GEG0158US0

Checking Oil Separator Hose

1. Check to see that all 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) Oil Separator Hoses

9Y1211012GEG0159US0

G-69

L3301, L3901, L4701, WSM

KiSC issued 09, 2016 A

GENERAL

Checking 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 [A] Manual Transmission Type

[B] HST Type

9Y1211012GEG0160US0

G-70

L3301, L3901, L4701, WSM

CAUTION

IMPORTANT

KiSC issued 09, 2016 A

(12) Check Points of Every 2000 Hours or 2 Years

Flushing Cooling System and Changing Coolant

To avoid personal injury:

• 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. Stop the engine, remove the key and let it cool down.

2. To drain the coolant, open the radiator drain plug and remove
radiator cap. The radiator cap must be removed to completely
drain the coolant.

3. After all coolant is drained, reinstall the drain plug.

4. Fill with clean soft water and cooling system cleaner.

5. Follow directions of the cleaner instruction.

6. After flushing, fill with clean soft water and anti-freeze until the
coolant level is just below the radiator cap.
Install the radiator cap securely.

7. Fill with coolant up to the "FULL" mark of recovery tank.

8. Start and operate the engine for fe w min ute s.

9. Stop the engine, remove the key and let cool.

10. Check coolant level of recovery tank and add coolant if
necessary.

11. Properly dispose of used coolant.

GENERAL

• Do not start engine without coolant.

• Use clean, fresh soft water and anti-freeze to fill the radiator
and recovery tank.

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

• Securely tighten radiator cap. If the cap is loose or
improperly fitted, water may leak out and the engine could
overheat.

6.5 L

Radiator coolant

Recovery tank
coolant

(1) Drain Plug
(2) Radiator Cap
(3) Recovery Tank

Capacity

A: FULL
B: LOW

6.9 U.S.qts

5.7 Imp.qts

0.6 L

0.6 U.S.qts

0.5 Imp.qts

9Y1211012GEG0181US0

G-71

L3301, L3901, L4701, WSM

CAUTION

KiSC issued 09, 2016 A

GENERAL

Anti-Freeze

To avoid personal injury:

• When using antifreeze, put on some protection such as
rubber gloves. (Antifreeze contains poison.)

• If it is swallowed, seek immediate medical help. Do NOT
make a person throw up unless told to do so by poison
control or a health care professional. Use standard first aid
and CPR for signs of shock or cardiac arrest. Call your
local Poison Control Center or your local emergency
number for further assistance.

• When antifreeze comes in contact with the skin or clothing,
wash it off immediately.

• Do not mix different types of antifreeze.
The mixture can produce chemical reaction causing
harmful substances.

• Antifreeze is extremely flammable and explosive under
certain conditions. Keep fire and children away from
antifreeze.

• When draining fluids from the engine, place some
container underneath the engine body.

• Do not pour waste onto the grounds, down a drain, or into
any water source.

• Also, observe the relevant environmental protection
regulations when disposing of antifreeze.

Always use a 50/50 mix of long-life coolant and clean soft water

in KUBOTA engines.

1. Long-life coolant (hereafter LLC) comes in several types. Use
ethylene glycol (EG) type for this engine.

2. Before employing LLC-mixed cooling water, fill the radiator with
fresh water and empty it again.
Repeat this procedure 2 or 3 times to clean up the inside.

3. Mixing the LLC
Premix 50 % LLC with 50 % clean soft water. When mixing, stir
it up well, and then fill into the radiator.

4. The procedure for the mixing of water and antifreeze differs
according to the make of the antifreeze and the ambient
temperature. Refer to SAE J1034 standard, more specifically
also to SEA J814c.

Vol %

Anti-freeze

50 −37 −34 108 226

*At 1.013 × 105 Pa (760 mmHg) pressure (atmospheric). A higher boiling point is
obtained by using a radiator pressure cap which permits the development of
pressure within cooling system.

Freezing Point Boiling Point*

°C °F °C °F

(To be continued)

G-72

L3301, L3901, L4701, WSM

NOTE

KiSC issued 09, 2016 A

(Continued)

5. Adding the LLC

6. When the LLC is mixed, do not employ any radiator cleaning

7. Kubota's genuine long-life coolant has a service life of 2 years.

• The above data represent industry standards that

(13) Check Points of Every 2 Years

Replacing Fuel Grommet

• Refer to "Checking Fuel Grommet". (See page G-59.)

Replacing DPF Differential Pressure Sensor Hose

• Refer to "DPF Muffler". (See page 1-S19.)

GENERAL

a) Add only water if the mixture reduces in amount by

evaporation

b) If there is a mixture leak, add the LLC of the same

manufacturer and type in the same mixture percentage.
*Never add any long-life coolant of different manufacturer.
(Different brands may have different additive components,
and the engine may fail to perform as specified.)

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

Be sure to change the coolant every 2 years.

necessitate a minimum glycol content in the concentrated
antifreeze.

9Y1211012GEG0182US0

9Y1211012GEG0186US0

9Y1211012GEG0120US0

(14) Check points of Every 4 Years

Replacing Radiator Hose (Water pipes)

• Replace the hoses and clamps.

Replacing Power Steering Hose
[Manual Transmission Type]

• Replace the hoses and clamps.

Replacing Fuel Hose

• Replace the fuel hoses and clamps.

Replacing Oil Cooler Line
[HST Type]

• Refer to "Checking Oil Cooler Line". (See page G-69.)

Replacing Intake Air Line

• Replace the intake hoses and clamps.

Replacing Oil Separator Hose

• Refer to "Checking Oil Separator Hose". (See page G-69.)

Refer to "Checking Radiator Hose and Hose Clamp". (See page
G-69.)

9Y1211012GEG0183US0

Refer to "Checking Power Steering Line". (See page G-70.)

9Y1211012GEG0184US0

Refer to "Checking Fuel Line". (See page G-68.)

9Y1211012GEG0185US0

9Y1211012GEG0187US0

Refer to "Checking Intake Air Line". (See page G-69.)

9Y1211012GEG0188US0

9Y1211012GEG0189US0

G-73

L3301, L3901, L4701, WSM

IMPORTANT

KiSC issued 09, 2016 A

(15) Others

GENERAL

Bleeding Fuel System

Air must be removed:

1. When the fuel filter or lines are removed.

2. When water is drained from water separator.

3. When tank is completely empty.

4. After the tractor has not been used for a long period of time.

 Bleeding procedure is as follows:

1. Fill the fuel tank with fuel, and open the fuel valve (1).

2. Loosen the air vent plug on the fuel filter 2 turns or so.

3. Turn on the key switch and wait for about 1 minute. Then tighten
up the air vent plug.

4. Set the hand throttle lever at the minimum speed position and
turn the key to "START" position.
If the engine does not start, try it seve ral times at 30 second
intervals.

• Do not hold key switch at engine start position for more
than 10 seconds continuously. If more engine cranking is
needed, try again after 30 seconds.

5. Accelerate the engine to remove the small portion of air left in
the fuel system.

6. If air still remains and the engine stops, repeat the above steps.

(1) Fuel Valve
(2) Air Vent Valve

A: Close
B: Open

9Y1211012GEG0191US0

Draining Clutch Housing Water

1. The tractor is equipped with split pin plug (1) under the clutch
housing.

2. After operating in rain, snow or tractor has been washed, water
may get into the clutch housing.

3. Check it by pushing in the split pin plug (1).

4. If water has entered into the clutch housing, remove the split pin
plug (1) and drain the water, then reinstall the plug again.

(1) Split Pin Plug

9Y1211012GEG0192US0

G-74

L3301, L3901, L4701, WSM

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

Replacing Fuse

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

2. If any of the fuses should blow, replace with a new one of the
same capacity.

• Before replacing a blown fuse, determine why the fuse blew
and make any necessary repairs. Failure to follow this
procedure may result in serious damage to the tractor
electrical system. Refer to "1. TROUBLESHOOTING" on
page 9-S1.
If any of them should blow, replace with a new one of the
same capacity.

Fuse No. Capacity (A) Protected circuit

(1) 5 Engine ECU (Ignition key)
(2) 5 Main ECU (Ignition key)
(3) 5 Meter panel (Ignition key)
(4) 10 Combination switch
(5) 10 Work light
(6) 5 Starter relay
(7) 20 Engine ECU (Battery)
(8) 5 Main ECU (Battery)

(9) 5 Meter panel (Battery)
(10) 10 Hazard
(11) 5 Heater relay (if equipped)
(12) 10 Heater (Oil separator, IN 1) (if equipped)
(13) 10 Heater (Oil separator, IN 2) (if equipped)
(14) 10 Heater (Oil separator, OUT 1) (if equipped)
(15) 10 Heater (Oil separator, OUT 2) (if equipped)

(16) Spare Fuse
(17) Fuse Puller

(18) Spare Fuse

9Y1211012GEG0193US0

Replacing Slow-Blow Fuses

1. The slow-blow fuses are intended to protect the electrical
cabling. If any of them has blown out, be sure to pinpoint the
cause. Never use any substitute, use only a KUBOTA genuine
part.

No. Capacity (A) Protected circuit

(1) 40 Load
(2) 60 Battery
(3) 40 Heater (Oil separator) (if equipped)

9Y1211012GEG0194US0

Replacing Light Bulb

Light Capacity

Head lights 25 W / 25 W
Tail light 5 W
Turn signal / Hazard light (rear) 21 W
Turn signal / Hazard light (front) 23 W

9Y1211012GEG0195US0

G-75

L3301, L3901, L4701, WSM

NOTE

IMPORTANT

KiSC issued 09, 2016 A

GENERAL

Replacing Head Lamp

To avoid personal injury:

• Be careful not to drop the bulb, hit anything against the
lamp, apply excess force, and get the lamp scratched. If
broken, glass may cause injury. Pay more attention to
halogen lamps in particular, which have high pressure
inside.

• Before replacing the lamp, be sure to turn off the light and
wait until the bulb cools down, otherwise, you may get
burned.

 Removing Bulb

1. Remove the rubber boot.

2. Turn the socket counterclockwise while pressing and remove it.

3. Remove the bulb.

 Attaching Bulb

1. Align (A) of the bulb with (B) of the lamp case and attach the
bulb.

2. Align (C) of the socket with (D) of the lamp case and attach the
socket.

3. Attach the rubber boot.

• Be sure to use a new bulb of the specified wattage.

• Never touch the bulb surface (glass) with bare hands.
Fingerprints, for example, may break the bulb.

(1) Rubber Boot
(2) Socket
(3) Bulb
(4) Lamp Case

(A) Align to (B)
(C) Align to (D)

9Y1211012GEG0196US0

Replacing Radiator Hose (if equipped)

• Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred.
Refer to "Checking Radiator Hose and Hose Clamp". (See page
G-69.)

9Y1211012GEG0206US0

Replacing Fuel Lines

• Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred.
Refer to "Checking Fuel Line". (See page G-68.)

9Y1211012GEG0207US0

Replacing Intake Air Line

• Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred.
Refer to "Checking Intake Air Line". (See page G-69.)

9Y1211012GEG0208US0

Replacing Power Steering Hose

• Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred.
Refer to "Checking HST Oil Line and Power Steering Oil Line".
(See page G-70.)

9Y1211012GEG0209US0

Replacing Oil Cooler Line

• Replace if any deterioration (crack, hardening, scar of
deformation) or damage occurred.
Refer to "Checking HST Oil Line and Power Steering Line".
(See page G-69.)

9Y1211012GEG0210US0

G-76