Kubota SM-E4B Series Workshop Manual
WORKSHOP MANUAL
KiSC issued 01, 2013 A
DIESEL ENGINE
SM-E4B SERIES
TO THE READER
KiSC issued 01, 2013 A
This Workshop Manual tells the servicing personnel about the mechanism, servicing and
maintenance of SM-E4B series. It contains 4 parts: "Information", "General", "Mechanism" and
"Servicing".
Q Information
This section primarily contains information below.
• Safety First
• Specification
• Performance Curve
• Dimension
Q General
This section primarily contains information below.
• Engine Identification
• General Precautions
• Maintenance Check List
• Check and Maintenance
• Special Tools
Q 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.
Q 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.
December, 2012
© KUBOTA Corporation 2012
I INFORMATION
KiSC issued 01, 2013 A
INFORMATION
KiSC issued 01, 2013 A
CONTENTS
1. SAFETY FIRST .............................................................................................................................. I-1
2. SPECIFICATIONS.......................................................................................................................... I-4
3. PERFORMANCE CURVES ............................................................................................................I-6
4. DIMENSIONS ............................................................................................................................... I-11
SM-E4B SERIES, WSM
SAFETY FIRST
DANGER
WARNING
CAUTION
IMPORTANT
NOTE
KiSC issued 01, 2013 A
INFORMATION
1. SAFETY FIRST
• This symbol, the industry's "Safety Alert Symbol", is used throughout this manual and on labels on the
machine itself to warn of the possibility of personal injury. Read these instructions carefully.
• It is essential that you read the instructions and safety regulations before you try to repair or use this
unit.
• Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
• Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
• Indicates a potentially hazardous situation which, if not avoided, may 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 engine safety decals.
• Clean the work area and engine.
• Park the machine on a stable and level ground.
• Let the temperature of the engine decrease before
you start a job.
• Stop the engine, then remove the key.
• Disconnect the battery negative cable.
• Hang a "DO NOT OPERATE" tag in the operator
station.
WSM000001INI0002US0
START SAFELY
• Do not do the procedures below when you start the
engine.
– short across starter terminals
– bypass the safety start switch
• Do not make unauthorized modifications to the
engine. This can cause damage and decrease the
engine life.
WSM000001INI0003US0
I-1
SM-E4B SERIES, WSM
KiSC issued 01, 2013 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 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.
WSM000001INI0004US0
PREVENT A FIRE
• Fuel is very flammable and explosive under some
conditions. Do not smoke or let flames 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.
WSM000001INI0005US1
I-2
SM-E4B SERIES, WSM
KiSC issued 01, 2013 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.
WSM000001INI0006US1
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.
WSM000001INI0007US1
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.
WSM000001INI0008US1
PREPARE FOR EMERGENCIES
• Keep a first aid kit and fire extinguisher ready at all
times.
• Keep the emergency contact telephone numbers
near your telephone at all times.
WSM000001INI0009US1
I-3
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
INFORMATION
2. SPECIFICATIONS
Model Z482-E4B Z602-E4B
Number of Cylinder 2
Type Vertical, Water-cooled, 4 cycle IDI diesel engine
Bore × Stroke 67.0 × 68.0 mm (2.64 × 2.68 in.) 72.0 × 73.6 mm (2.83 × 2.90 in.)
Total Displacement 479.0 cm
ISO Net Continuous
ISO / SAE Net Intermittent
SAE Gross Intermittent
8.10 kW / 3600 min
(10.9 HP / 3600 min
9.30 kW / 3600 min
(12.5 HP / 3600 min
9.90 kW / 3600 min
(13.3 HP / 3600 min
Maximum Bare Speed 3800 min
Minimum Bare Idling Speed 1250 to 1350 min
Combustion Chamber Spherical type (E-TVCS)
Fuel Injection Pump Bosch MD type mini pump
Governor All speed mechanical governor
Direction of Rotation Counter-clockwise (viewed from flywheel side)
Injection Nozzle Bosch "Throttle" type
Injection Timing 0.33 rad (19 °) before T.D.C.
Firing Order 1-2
Injection Pressure 13.73 MPa (140.0 kgf/cm
Compression Ratio 23.5 : 1 24 : 1
Lubricating System Forced lubrication by trochoid pump
Oil Pressure Indicating Electrical type switch
Lubricating Filter Full flow paper filter (Cartridge type)
Cooling System Pressurized radiator, forced circulation with water pump (not included in the basic engine)
Starting System Electric Starting with Starter
Starting Motor 12 V, 0.8 kW 12 V, 1.0 kW
Starting Support Device By glow plug in combustion chamber
EGR None
Battery 12 V, 28 AH equivalent 12 V, 36 AH equivalent
Charging Alternator 12 V, 150 W 12 V, 480 W
Fuel Diesel Fuel No.2-D (ASTM D975)
Lubricating Oil
Oil Pan Depth
Lubricating Oil
Capacity
101 mm (3.98 in.)
Oil Pan Depth
121 mm (4.76 in.)
Weight (Dry) 53.1 kg (117 lbs) 57.0 kg (125.7 lbs)
*The specification described above is of the standard engine of each model.
*Conversion Formula : HP = 0.746 kW, PS = 0.7355 kW
3
(29.23 cu.in.) 599.0 cm3 (36.55 cu.in.)
-1
(rpm)
-1
(rpm))
-1
(rpm)
-1
(rpm))
-1
(rpm)
-1
(rpm))
-1
(rpm) 3850 min-1 (rpm)
-1
(rpm) 1050 to 1150 min-1 (rpm)
10.1 kW / 3600 min
(13.5 HP / 3600 min
11.6 kW / 3600 min
(15.5 HP / 3600 min
12.5 kW / 3600 min
(16.8 HP / 3600 min
2
, 1991 psi)
-1
(rpm)
-1
(rpm))
-1
(rpm)
-1
(rpm))
-1
(rpm)
-1
(rpm))
Class CF lubricating oil as per API classification is recommended.
For details on recommended lubricating oils, see page G-6
2.1 L (0.55 U.S.gals) 2.5 L (0.66 U.S.gals)
2.5 L (0.66 U.S.gals) –
I-4
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
INFORMATION
Model D722-E4B D782-E4B D902-E4B
Number of Cylinder 3
Type Vertical, Water-cooled, 4 cycle IDI diesel engine
Bore × Stroke 67.0 × 68.0 mm (2.64 × 2.68 in.) 67.0 × 73.6 mm (2.64 × 2.90 in.) 72.0 × 73.6 mm (2.83 × 2.90 in.)
3
Total Displacement 719.0 cm
ISO Net Continuous
ISO / SAE Net Intermittent
SAE Gross Intermittent
12.2 kW / 3600 min
(16.3 HP / 3600 min
14.0 kW / 3600 min
(18.8 HP / 3600 min
14.9 kW / 3600 min
(20.0 HP / 3600 min
Maximum Bare Speed 3800 min
Minimum Bare Idling Speed 1250 to 1350 min
(43.88 cu.in.) 778.0 cm3 (47.48 cu.in.) 898.0 cm3 (54.80 cu.in.)
-1
(rpm)
-1
(rpm))
-1
(rpm)
-1
(rpm))
-1
(rpm)
-1
(rpm))
-1
(rpm) 3450 min-1 (rpm) 3850 min-1 (rpm)
-1
(rpm) 1000 to 1100 min-1 (rpm) 900 to 1000 min-1 (rpm)
11.9 kW / 3200 min
(16.0 HP / 3200 min
13.5 kW / 3200 min
(18.1 HP / 3200 min
14.4 kW / 3200 min
(19.3 HP / 3200 min
-1
(rpm)
-1
(rpm))
-1
(rpm)
-1
(rpm))
-1
(rpm)
-1
(rpm))
15.2 kW / 3600 min
(20.4 HP / 3600 min
17.5 kW / 3600 min
(23.5 HP / 3600 min
18.5 kW / 3600 min
(24.8 HP / 3600 min
-1
(rpm)
-1
(rpm))
-1
(rpm)
-1
(rpm))
-1
(rpm)
-1
(rpm))
Combustion Chamber Spherical type (E-TVCS)
Fuel Injection Pump Bosch MD type mini pump
Governor All speed mechanical governor
Direction of Rotation Counter-clockwise (viewed from flywheel side)
Injection Nozzle Bosch "Throttle" type
Injection Timing 0.35 rad (20 °) before T.D.C. 0.30 rad (17 °) before T.D.C. 0.331 rad (19 °) before T.D.C.
Firing Order 1-2-3
2
Injection Pressure 13.73 MPa (140.0 kgf/cm
, 1991 psi)
Compression Ratio 23.5 : 1 24 : 1
Lubricating System Forced lubrication by trochoid pump
Oil Pressure Indicating Electrical type switch
Lubricating Filter Full flow paper filter (Cartridge type)
Cooling System Pressurized radiator, forced circulation with water pump (not included in the basic engine)
Starting System Electric Starting with Starter
Starting Motor 12 V, 1.0 kW 12 V, 1.2 kW
Starting Support Device By glow plug in combustion chamber
EGR None
Battery 12 V, 36 AH equivalent 12 V, 52 AH equivalent
Charging Alternator 12 V, 150 W 12 V, 480 W
Fuel Diesel Fuel No.2-D (ASTM D975)
Lubricating Oil
Lubricating Oil
Capacity
Oil Pan Depth
101 mm (3.98 in.)
Oil Pan Depth
121 mm (4.76 in.)
3.2 L (0.85 U.S.gals) – 3.7 L (0.98 U.S.gals)
3.8 L (1.0 U.S.gals) 3.6 L (0.95 U.S.gals) –
Class CF lubricating oil as per API classification is recommended.
For details on recommended lubricating oils, see page G-6.
Weight (Dry) 63.1 kg (139.1 lbs) 63.5 kg (140 lbs) 72.0 kg (159 lbs)
*The specification described above is of the standard engine of each model.
*Conversion Formula : HP = 0.746 kW, PS = 0.7355 kW
9Y1210785INI0001US0
I-5
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
3. PERFORMANCE CURVES
Z482-E4B
INFORMATION
(1) Brake Horsepower
(2) Engine Speed
(3) B.S.F.C.
(4) Torque
(5) Gross Intermittent Torque
(6) Net Intermittent Torque
(7) Net Continuous Torque
(8) Gross Intermittent B.H.P.
(9) Net Intermittent B.H.P.
(10) Net Continuous B.H.P.
(11) Net Intermittent B.S.F.C.
(12) Gross Torque
(13) Overload Torque
(14) Continuous Torque
(15) Gross B.H.P.
(16) Overload B.H.P.
(17) Continuous B.H.P.
(18) Overload B.S.F.C.
9Y1210785INI0002US0
I-6
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
Z602-E4B
INFORMATION
(1) Brake Horsepower
(2) Engine Speed
(3) B.S.F.C.
(4) Torque
(5) Gross Intermittent Torque
(6) Net Intermittent Torque
(7) Gross Intermittent B.H.P.
(8) Net Intermittent B.H.P.
(9) Net Intermittent B.S.F.C.
(10) Gross Torque
(11) Overload Torque
(12) Gross B.H.P.
(13) Overload B.H.P.
(14) Overload B.S.F.C.
9Y1210785INI0003US0
I-7
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
D722-E4B
INFORMATION
(1) Brake Horsepower
(2) Engine Speed
(3) B.S.F.C.
(4) Torque
(5) Gross Intermittent Torque
(6) Net Intermittent Torque
(7) Net Continuous Torque
(8) Gross Intermittent B.H.P.
(9) Net Intermittent B.H.P.
(10) Net Continuous B.H.P.
(11) Net Intermittent B.S.F.C.
(12) Gross Torque
(13) Overload Torque
(14) Continuous Torque
(15) Gross B.H.P.
(16) Overload B.H.P.
(17) Continuous B.H.P.
(18) Overload B.S.F.C.
9Y1210785INI0004US0
I-8
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
D782-E4B
INFORMATION
(1) Brake Horsepower
(2) Engine Speed
(3) B.S.F.C.
(4) Torque
(5) Gross Intermittent Torque
(6) Net Intermittent Torque
(7) Net Continuous Torque
(8) Gross Intermittent B.H.P.
(9) Net Intermittent B.H.P.
(10) Net Continuous B.H.P.
(11) Net Intermittent B.S.F.C.
(12) Gross Torque
(13) Overload Torque
(14) Gross B.H.P.
(15) Overload B.H.P.
(16) Overload B.S.F.C.
9Y1210785INI0005US0
I-9
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
D902-E4B
INFORMATION
(1) Brake Horsepower
(2) Engine Speed
(3) B.S.F.C.
(4) Torque
(5) Gross Intermittent Torque
(6) Net Intermittent Torque
(7) Gross Intermittent B.H.P.
(8) Net Intermittent B.H.P.
(9) Net Intermittent B.S.F.C.
(10) Gross Torque
(11) Overload Torque
(12) Gross B.H.P.
(13) Overload B.H.P.
(14) Overload B.S.F.C.
9Y1210785INI0006US0
I-10
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
4. DIMENSIONS
Z482-E4B
INFORMATION
9Y1210785INI0007US0
I-11
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
Z602-E4B
INFORMATION
9Y1210785INI0008US0
I-12
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
D722-E4B
INFORMATION
9Y1210785INI0009US0
I-13
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
D782-E4B
INFORMATION
9Y1210785INI0010US0
I-14
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
D902-E4B
INFORMATION
9Y1210785INI0011US0
I-15
G GENERAL
KiSC issued 01, 2013 A
GENERAL
KiSC issued 01, 2013 A
CONTENTS
1. ENGINE IDENTIFICATION .......................................................................................................... G-1
[1] MODEL NAME AND ENGINE SERIAL NUMBER.................................................................. G-1
[2] E4B ENGINE .......................................................................................................................... G-3
[3] CYLINDER NUMBER ............................................................................................................. G-3
2. GENERAL PRECAUTION ............................................................................................................G-4
3. MAINTENANCE CHECK LIST ..................................................................................................... G-5
4. CHECK AND MAINTENANCE ..................................................................................................... G-7
[1] DAILY CHECK POINTS ......................................................................................................... G-7
[2] CHECK POINTS OF INITIAL 50 HOURS .............................................................................. G-9
[3] CHECK POINT OF EVERY 50 HOURS ............................................................................... G-11
[4] CHECK POINTS OF EVERY 75 HOURS ............................................................................ G-12
[5] CHECK POINTS OF EVERY 100 HOURS .......................................................................... G-13
[6] CHECK POINTS OF EVERY 150 HOURS .......................................................................... G-15
[7] CHECK POINTS OF EVERY 200 HOURS .......................................................................... G-16
[8] CHECK POINTS OF EVERY 400 HOURS .......................................................................... G-17
[9] CHECK POINTS OF EVERY 500 HOURS .......................................................................... G-18
[10]CHECK POINTS OF EVERY 1 OR 2 MONTHS .................................................................. G-20
[11]CHECK POINT OF EVERY YEAR ....................................................................................... G-22
[12]CHECK POINT OF EVERY 800 HOURS ............................................................................. G-23
[13]CHECK POINTS OF EVERY 1500 HOURS ........................................................................ G-24
[14]CHECK POINTS OF EVERY 3000 HOURS ........................................................................ G-26
[15]CHECK POINTS OF EVERY 2 YEARS ............................................................................... G-29
....
5. SPECIAL TOOLS ...................................................................................................................
G-33
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
1. ENGINE IDENTIFICATION
[1] MODEL NAME AND ENGINE SERIAL NUMBER
When contacting the manufacture, always specify your engine
model name and serial number.
The engine model and its serial number need to be identified
before the engine can be serviced or parts replaced.
Q Engine Serial Number
The engine serial number is an identification number.
It is marked after the engine model name.
It indicates the engine series, the production year and month,
and the lot number.
Engine Series
Number or
Alphabet
1 05 (include: WG) 6
2V3703
308807
4 SM (include: WG) A EA, RK
5
Series
Air Cooled
Gasoline
Number or
Alphabet
B
GENERAL
Series
GZ, OC, AC, EA,
E
03 (KET
Production)
Production Year
Alphabet or
Number
1 2001 F 2015
2 2002 G 2016
3 2003 H 2017
4 2004 J 2018
5 2005 K 2019
6 2006 L 2020
7 2007 M 2021
8 2008 N 2022
9 2009 P 2023
A 2010 R 2024
B 2011 S 2025
C 2012 T 2026
D 2013 V 2027
E 2014
(1) Engine Model Name and Serial
Number
Year
Alphabet or
Number
Yea r
(To be continued)
G-1
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
(Continued)
Production Month and Lot Number
Month Engine Lot Number
January A0001 ~ A9999 B0001 ~
February C0001 ~ C9999 D0001 ~
March E0001 ~ E9999 F0001 ~
April G0001 ~ G9999 H0001 ~
May J0001 ~ J9999 K0001 ~
June L0001 ~ L9999 M0001 ~
July N0001 ~ N9999 P0001 ~
August Q0001 ~ Q9999 R0001 ~
September S0001 ~ S9999 T0001 ~
October U0001 ~ U9999 V0001 ~
November W0001 ~ W9999 X0001 ~
December Y0001 ~ Y9999 Z0001 ~
* Alphabetical letters "I" and "O" are not used.
(a)
e.g. D902
(a) D902: Engine Model Name
(b) 4: Engine Series (SM series)
(c) C: Production Year (2012)
(d) W: Production Month (November)
(e) 1237: Lot Number: (0001 ~ 9999 or A001 ~ Z999)
(b)C(c)W(d)
- 4
(e)
1237
GENERAL
9Y1210785GEG0001US0
G-2
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
GENERAL
[2] E4B ENGINE
[Example : Engine Model Name D902-E4B-XXXX]
The emission controls previously implemented in various countries to prevent air pollution will be stepped up as
Non-Road Emission Standards continue to change. The timing or applicable date of the specific Non-Road 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 Non-Road 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 KUBOTA Workshop Manual. Use of incorrect replacement
parts or replacement parts from other emission level engines (for example: E2B 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 EPA regulation
EF Less than 19 kW Tier 4
(1) "E4B" engines are identified with "EF" at the end of the Model designation, on
the US EPA label.
"E4B" designates Tier 4, depending on engine output classification.
9Y1210785GEG0002US0
[3] CYLINDER NUMBER
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 and
No.3 starting from the gear case side.
9Y1210785GEG0003US0
G-3
SM-E4B SERIES, WSM
KiSC issued 01, 2013 A
2. GENERAL PRECAUTION
• 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 that
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 only 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.
• Make sure that you try to operate the engine after you repair or
assemble it. Do not try to give a heavy load immediately, if not,
you can cause serious damage to the engine.
(1) Grease
(2) Force
(3) Sharp Edge
GENERAL
(A) External Snap Ring
(B) Internal Snap Ring
WSM000001GEG0091US0
G-4
SM-E4B SERIES, WSM
CAUTION
KiSC issued 01, 2013 A
GENERAL
3. MAINTENANCE CHECK LIST
To maintain long-lasting and safe engine performance, make it a rule to carry out regular inspections by following
the table below.
Service Interval
Item
50 hrs 75 hrs
*Checking fuel hoses and clamp
bands
(1) Oil pan depth
(101 mm, 3.98 in.)
Changing Engine
oil
Checking fan belt tension and damage ,
*Cleaning air cleaner element
(Replace the element after 6 times
cleaning)
Cleaning fuel filter (element type) ,
Checking battery electrolyte level ,
Replacing oil filter
cartridge
Checking radiator hoses and clamp
bands
*Checking intake air line ,
*Replacing fuel filter ,
Cleaning water jacket and radiator
interior
Replacing fan belt ,
Recharging battery ,
*Replacing air cleaner element ,
Checking valve clearance ,
*Checking injection nozzle condition ,
*Checking injection timing ,
*Checking injection pump ,
*Replacing intake air line ,
Replacing battery ,
Replacing radiator hoses and clamp
bands
*Replacing fuel hoses and clamp
bands
Changing radiator coolant (L.L.C.) ,
(2) Oil pan depth
(121 mm, 4.76 in.)
(3) Extended oil
pan depth
(101 mm, 3.98 in.)
(1) Oil pan depth
(101 mm, 3.98 in.)
(2) Oil pan depth
(121 mm, 4.76 in.)
(3) Extended oil
pan depth
(101 mm, 3.98 in.)
,
+,
+,
+,
+,
+,
+,
100
hrs
,
150
hrs
200
hrs
,
• (1) : This oil pan depth is optional for Z482-E4B and D722-E4B.
• (2) : This oil pan depth is standard for Z482-E4B, D722-E4B and D782-E4B.
• (3) : This oil pan depth is standard for Z602-E4B and D902-E4B.
• + : Change engine oil and replace oil filter cartridge after the first 50 hours of operation.
• * : The items listed above (* marked) are registered as emission related critical parts by KUBOTA in the U.S. EPA
nonroad emission regulation. As the engine owner, you are responsible for the performance of the required
maintenance on the engine according to the above instruction.
400
hrs
Every
500
hrs
,
1 or 2
months
1 year
800
hrs
1500
hrs
3000
hrs2 years
,
,
• When changing or inspecting, be sure to level and stop the engine.
9Y1210785GEG0004US0
G-5
SM-E4B SERIES, WSM
NOTE
KiSC issued 01, 2013 A
GENERAL
Engine Oil :
• Refer to the following table for the suitable American Petroleum Institute (API) classification of engine oil
according to the engine type (with internal EGR, external EGR or non-EGR) and the Fuel Type Used :
(Low Sulfur, Ultra Low Sulfur or High Sulfur Fuels).
Engine oil classification (API classification)
Fuel Type
High Sulfur Fuel
[0.05 % (500 ppm) ≤
Sulfur Content <
0.50 % (5000 ppm)]
CF
(If the "CF-4, CG-4, CH-4, or CI-4" engine
oil is used with a high-sulfur fuel, change
the engine oil at shorter intervals.
(approximately half))
Engines with non-EGR
Engines with internal EGR
Engines with external EGR
–
Low Sulfur Fuel
[Sulfur Content <
0.05 % (500 ppm)] or
Ultra Low Sulfur Fuel
[Sulfur Content <
CF, CF-4, CG-4, CH-4 or CI-4
CF or CI-4
(Class CF-4, CG-4 and CH-4 engine oils
cannot be used on EGR type engines.)
0.0015 % (15 ppm)]
EGR : Exhaust Gas Re-circulation
• CJ-4 classification oil is intended for use in engines equipped with DPF (Diesel Particulate Filter) and is
Not Recommended for use in KUBOTA E3 specification engines.
• Oil used in the engine should have API classification and Proper SAE Engine Oil Viscosity according to
the ambient temperatures where the engine is operated.
• With strict emission control regulations now in effect, the CF-4 and CG-4 engine oils have been developed
for use with low sulfur fuels, for On-Highway vehicle engines. When a Non-Road engine runs on high
sulfur fuel, it is advisable to use a "CF or better" classification engine oil with a high Total Base Number
(a minimum TBN of 10 is recommended).
Fuel :
• Cetane Rating : The minimum recommended Fuel Cetane Rating is 45. A cetane rating greater than 50 is
preferred, especially for ambient temperatures below −20 °C (−4 °F) or elevations above 1500 m (5000 ft).
• Diesel Fuel Specification Type and Sulfur Content % (ppm) used, must be compliant with all applicable
emission regulations for the area in which the engine is operated.
• Use of diesel fuel with sulfur content less than 0.10 % (1000 ppm) is strongly recommended.
• If high-sulfur fuel (sulfur content 0.50 % (5000 ppm) to 1.0 % (10000 ppm)) is used as a diesel fuel, change
the engine oil and oil filter at shorter intervals. (approximately half)
• DO NOT USE Fuels that have sulfur content greater than 1.0 % (10000 ppm).
• 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 heavy mobile service. (SAE J313
JUN87)
• Since KUBOTA diesel engines of less than 56 kW (75 hp) utilize EPA Tier 4 and Interim Tier 4 standards,
the use of low sulfur fuel or ultra low sulfur fuel is mandatory for these engines, when operated in US EPA
regulated areas. Therefore, please use No.2-D S500 or S15 diesel fuel as an alternative to No.2-D, and use
No.1-D S500 or S15 diesel fuel as an alternative to No.1-D for ambient temperatures below −10 °C (14 °F).
1) SAE : Society of Automotive Engineers
2) EN : European Norm
3) ASTM : American Society of Testing and Materials
4) US EPA : United States Environmental Protection Agency
5) No.1-D or No.2-D, S500 : Low Sulfur Diesel (LSD) less than 500 ppm or 0.05 wt.%
No.1-D or No.2-D, S15 : Ultra Low Sulfur Diesel (ULSD) 15 ppm or 0.0015 wt.%
9Y1210785GEG0005US0
G-6
SM-E4B SERIES, WSM
IMPORTANT
NOTE
KiSC issued 01, 2013 A
4. CHECK AND MAINTENANCE
[1] DAILY CHECK POINTS
Checking Engine Oil Level
1. Level the engine.
2. To check the oil level, draw out the dipstick (1), wipe it clean,
reinsert it, and draw it out again.
Check to see that the oil level lies between the two notches.
3. If the level is too low, add new oil to the specified level.
• When using an oil of different maker or viscosity from the
previous, drain old oil. Never mix two different types of oil.
• Be sure to inspect the engine, locating it on a horizontal
place. If placed on gradients, accurately, oil quantity may
not be measured.
• Be sure to keep the oil level between upper and lower limits
of the dipstick. Too much oil may cause a drop in output or
excessive blow-by gas. On the closed breather type engine
in which mist is sucked through port, too much oil may
caused oil hammer. While too little oil, may seize the
engine's rotating and sliding parts.
(1) Dipstick
GENERAL
9Y1210785GEG0006US0
G-7
SM-E4B SERIES, WSM
CAUTION
IMPORTANT
KiSC issued 01, 2013 A
GENERAL
Checking and Replenish Coolant
1. Without recovery tank (2) :
Remove the radiator cap (1) and check to see that the coolant
level is just below the port.
With recovery tank (2) :
Check to see that the coolant level lies between FULL "A" and
LOW "B".
2. If coolant level is too low, check the reason for decreasing
coolant.
(Case 1)
If coolant is decreasing by evaporation, replenish only fresh,
soft water.
(Case 2)
If coolant is decreasing by leak, replenish coolant of the same
manufacture and type in the specified mixture ratio (fresh, soft water
and L.L.C.). If the coolant brand cannot be identified, drain out all of
the remaining coolant and refill with a totally new brand of coolant
mix.
• Do not remove the radiator cap until coolant temperature is
below its boiling point. Then loosen the cap slightly to
relieve any excess pressure before removing the cap
completely.
• During filling the coolant, air must be vented from the
engine coolant passages. The air vents by jiggling the
radiator upper and lower hoses.
• Be sure to close the radiator cap securely. If the cap is
loose or improperly closed, coolant may leak out and the
engine could overheat.
• Do not use an antifreeze and scale inhibitor at the same
time.
• Never mix the different type or brand of L.L.C..
(1) Radiator Cap
(2) Recovery Tank
A : FULL
B : LOW
9Y1210785GEG0007US0
G-8
SM-E4B SERIES, WSM
CAUTION
IMPORTANT
KiSC issued 01, 2013 A
[2] CHECK POINTS OF INITIAL 50 HOURS
Changing Engine Oil
• Be sure to stop engine before changing engine oil.
1. Start and warm up the engine for approx. 5 minutes.
2. Place an oil pan underneath the engine.
3. To drain the used oil, remove the drain plug (2) at the bottom of
the engine and drain the oil completely.
4. Screw the drain plug (2).
5. Fill new oil up to upper line on the dipstick (1).
• 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.
• Engine oil should have properties of API classification CF
(See page G-6).
• Use the proper SAE Engine Oil according to ambient
temperature.
• Upon an oil change, be sure to replace the gasket with new
one.
Above 25 °C (77 °F) SAE 30 or SAE 10W-30, SAE 10W-40
0 °C to 25 °C (32 °F to 77 °F) SAE 20 or SAE 10W-30, SAE 10W-40
Below 0 °C (32 °F)
GENERAL
SAE 10W or SAE 10W-30,
SAE 10W-40
Model
101 mm (3.98 in.) 121 mm (4.76 in.)
*Z482-E4B
*D722-E4B
D782-E4B –
Z602-E4B
D902-E4B
*101 mm (3.98 in.) oil pan depth is optional.
Drain plug with
Tightening
torque
copper gasket
Drain plug with
rubber coated
gasket
2.1 L
0.55 U.S.gals
3.2 L
0.85 U.S.gals
2.5 L
0.66 U.S.gals
3.7 L
0.98 U.S.gals
M12 × 1.25
M22 × 1.5
M22 × 1.5
Engine oil capacity
Oil pan depth
2.5 L
0.66 U.S.gals
3.8 L
1.0 U.S.gals
3.6 L
0.95 U.S.gals
–
–
33 to 37 N·m
3.3 to 3.8 kgf·m
24 to 27 lbf·ft
64 to 73 N·m
6.5 to 7.5 kgf·m
47 to 54 lbf·ft
45 to 53 N·m
4.5 to 5.5 kgf·m
33 to 39 lbf·ft
(1) Dipstick (2) Drain Plug
9Y1210785GEG0008US0
G-9
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