Kubota V2003-M-E3, D1803-M-E3, D1703-M-E3, D1703-M-E3BG, V2203-M-E3 Operator's Manual

CONTENTS

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

SERVICING OF THE ENGINE .................................................................................... 1

NAMES OF PARTS .....................................................................................................2

PRE-OPERATION CHECK ..........................................................................................3

BREAK-IN.................................................................................................................3

DAILY CHECK.......................................................................................................... 3

OPERATING THE ENGINE ......................................................................................... 4

STARTING THE ENGINE(NORMAL) .......................................................................4

COLD WEATHER STARTING ................................................................................. 5

STOPPING THE ENGINE ........................................................................................ 6

CHECKS DURING OPERATION .............................................................................6

Radiator Cooling water(Coolant) ...................................................................................... 6

Oil pressure lamp ............................................................................................................. 6

Fuel .................................................................................................................................. 7

Color of exhaust ............................................................................................................... 7

Immediately stop the engine if;......................................................................................... 7

REVERSED ENGINE REVOLUTION AND REMEDIES ..........................................7

How to tell when the engine starts running backwards .................................................... 7

Remedies ......................................................................................................................... 7

MAINTENANCE ...........................................................................................................8

SERVICE INTERVALS .............................................................................................9

PERIODIC SERVICE .................................................................................................12

FUEL ......................................................................................................................12

Fuel level check and refueling ........................................................................................ 12

Air bleeding the fuel system ........................................................................................... 13

Checking the fuel pipes .................................................................................................. 14

Cleaning the fuel filter pot............................................................................................... 14

Fuel filter cartridge replacement ..................................................................................... 15

ENGINE OIL ...........................................................................................................15

Checking oil level and adding engine oil ........................................................................ 15

Changing engine oil........................................................................................................ 16

Replacing the oil filter cartridge ...................................................................................... 17

RADIATOR .............................................................................................................17

Checking coolant level, adding coolant .......................................................................... 18

Changing coolant ........................................................................................................... 19

Remedies for quick decrease of coolant ........................................................................ 19

Checking radiator hoses and clamp bands .................................................................... 19

Precaution at overheating .............................................................................................. 19

Cleaning radiator core (outside) ..................................................................................... 19

Cleaning the radiator (inside) ......................................................................................... 20

Anti-freeze ...................................................................................................................... 20

AIR CLEANER........................................................................................................ 21

Evacuator valve.............................................................................................................. 21

For the air cleaner with a dust cup (optional) ................................................................. 21

Dust indicator (optional) ................................................................................................. 22

BATTERY ...............................................................................................................22

Battery charging ............................................................................................................. 22

ENGLISH

ENGLISH

CONTENTS

Direction for long term storage ....................................................................................... 23

ELECTRIC WIRING ............................................................................................... 23

FAN BELT ..............................................................................................................24

Adjusting Fan Belt Tension ............................................................................................ 24

CARRIAGE AND STORAGE .....................................................................................25

CARRIAGE ............................................................................................................. 25

STORAGE ..............................................................................................................25

TROUBLESHOOTING ............................................................................................... 26

SPECIFICATIONS .....................................................................................................28

WIRING DIAGRAMS.................................................................................................. 34

SAFE OPERATION

1SAFE OPERATION

Careful operation is your best assurance against an accident. Read and understand this
section carefully before operating the engine. All operators, no matter how much
experience they may have, should read this and other related manuals before operating
the engine or any equipment attached to it. It is the owner's obligation to provide all
operators with this information and instruct them on safe operation.

Be sure to observe the following for safe operation.

OBSERVE SAFETY INSTRUCTIONS

1.

A Read and understand carefully this "OPERATOR'S

MANUAL" and "LABELS ON THE ENGINE" before
attempting to start and operate the engine.

A Learn how to operate and work safely. Know your

equipment and its limitations. Always keep the engine in
good condition.

A Before allowing other people to use your engine, explain

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

A DO NOT modify the engine. UNAUTHORIZED

MODIFICATIONS to the engine may impair the function
and/or safety and affect engine life. If the engine does not
perform properly, consult your local Kubota Engine
Distributor first.

2. WEAR SAFE CLOTHING AND PERSONAL PROTECTIVE EQUIPMENT (PPE)

A DO NOT wear loose, torn or bulky clothing around the

machine that may catch on working controls and
projections or into fans, pulleys and other moving parts
causing personal injury.

A Use additional safety items-PPE, e.g. hard hat, safety

protection, safety goggles, gloves, etc., as appropriate or
required.

A DO NOT operate the machine or any equipment attached

to it while under the influence of alcohol, medication, or
other drugs, or while fatigued.

A DO NOT wear radio or music headphones while

operating the engine.

ENGLISH

SAFE OPERATION2

3. CHECK BEFORE STARTING & OPERATING THE ENGINE

ENGLISH

A Be sure to inspect the engine before operation. Do not

operate the engine if there is something wrong with it.
Repair it immediately.

A Ensure all guards and shields are in place before

operating the engine. Replace any that are damaged or
missing.

A Check to see that you and others are a safe distance

from the engine before starting.

A Always keep the engine at least 3 feet (1 meter) away

from buildings and other facilities.

A DO NOT allow children or livestock to approach the

machine while the engine is running.

A DO NOT start the engine by shorting across starter

terminals. The machine may start in gear and move. Do
not bypass or defeat any safety devices.

4. KEEP THE ENGINE AND SURROUNDINGS CLEAN

A Be sure to stop the engine before cleaning.
A Keep the engine clean and free of accumulated dirt,

grease and trash to avoid a fire. Store flammable fluids in
proper containers and cabinets away from sparks and
heat.

A Check for and repair leaks immediately.
A DO NOT stop the engine without idling; Allow the engine

to cool down, first. Keep the engine idling for about 5
minutes before stopping unless there is a safety problem
that requires immediate shut down.

5. SAFE HANDLING OF FUEL AND LUBRICANTS -KEEP AWAY FROM FIRE

A Always stop the engine before refueling and/or

lubricating.

A DO NOT smoke or allow flames or sparks in your work

area. Fuel is extremely flammable and explosive under
certain conditions.

A Refuel at a well ventilated and open place. When fuel

and/or lubricants are spilled, refuel after letting the
engine cool down.

A DO NOT mix gasoline or alcohol with diesel fuel. The

mixture can cause a fire or severe engine damage.

A Do not use unapproved containers e.g. buckets, bottles,

jars. Use approved fuel storage containers and
dispensers.

3SAFE OPERATION

6. EXHAUST GASES & FIRE PREVENTION

A Engine exhaust fumes can be very harmful if allowed to

accumulate. Be sure to run the engine in a well ventilated
location and where there are no people or livestock near
the engine.

A The exhaust gas from the muffler is very hot. To prevent

a fire, do not expose dry grass, mowed grass, oil or any
other combustible materials to exhaust gas. Keep the
engine and muffler clean at all times.

A To avoid a fire, be alert for leaks of flammable

substances from hoses and lines. Be sure to check for
leaks from hoses or pipes, such as fuel and hydraulic
fluid by following the maintenance check list.

A To avoid a fire, do not short across power cables and

wires. Check to see that all power cables and wirings are
in good condition. Keep all electrical connections clean.
Bare wire or frayed insulation can cause a dangerous
electrical shock and personal injury.

7. ESCAPING FLUID

A Relieve all pressure in the air, the oil and the cooling

systems before disconnecting any lines, fittings or
related items.

A Be cautious of possible pressure relief when

disconnecting any device from a pressurized system that
utilizes pressure. DO NOT check for pressure leaks with
your hand. High pressure oil or fuel can cause personal
injury.

A Escaping fluid under pressure has sufficient force to

penetrate skin causing serious personal injury.

A Fluid escaping from pinholes may be invisible. Use a

piece of cardboard or wood to search for suspected
leaks: do not use hands and body. Use safety goggles or
other eye protection when checking for leaks.

A If injured by escaping fluid, see a medical doctor

immediately. This fluid can produce gangrene or severe
allergic reaction.

ENGLISH

SAFE OPERATION4

8. CAUTIONS AGAINST BURNS & BATTERY EXPLOSION

ENGLISH

A To avoid burns, be cautious of hot components, e.g.

muffler, muffler cover, radiator, hoses, engine body,
coolants, engine oil, etc. during operation and after the
engine has been shut off.

A DO NOT remove the radiator cap while the engine is

running or immediately after stopping. Otherwise hot
water will spout out from the radiator. Wait until the
radiator is completely cool to the touch before removing
the cap. Wear safety goggles.

A Be sure to close the coolant drain valve, secure the

pressure cap, and fasten the pipe band before operating.
If these parts are taken off, or loosened, it will result in
serious personal injury.

A The battery presents an explosive hazard. When the

battery is being charged, hydrogen and oxygen gases
are extremely explosive.

A DO NOT use or charge the battery if its fluid level is below

the LOWER mark.
Otherwise, the component parts may deteriorate earlier
than expected, which may shorten the service life or
cause an explosion. Immediately, add distilled water until
the fluid level is between the UPPER and LOWER marks.

A Keep sparks and open flames away from the battery,

especially during charging. DO NOT strike a match near
the battery.

A DO NOT check the battery charge by placing a metal

object across the terminals. Use a voltmeter or
hydrometer.

A DO NOT charge a frozen battery. There is a risk of

explosion. When frozen, warm the battery up to at least
16 C (61 F).

9. KEEP HANDS AND BODY AWAY FROM ROTATING PARTS

A Be sure to stop the engine before checking or adjusting

the belt tension and cooling fan.

A Keep your hands and body away from rotating parts,

such as the cooling fan, V-belt, fan drive V-belt, pulley or
flywheel. Contact with rotating parts can cause severe
personal injury.

A DO NOT run the engine without safety guards. Install

safety guards securely before operation.

5SAFE OPERATION

10. ANTI-FREEZE & DISPOSAL OF FLUIDS

A Anti-freeze contains poison. Wear rubber gloves to avoid

personal injury. In case of contact with skin, wash it off
immediately.

A DO NOT mix different types of Anti-freeze. The mixture

can produce a chemical reaction causing harmful
substances. Use approved or genuine KUBOTA Anti­freeze.

A Be mindful of the environment and the ecology. Before

draining any fluids, determine the correct way to dispose
of them. Observe the relevant environmental protection
regulations when disposing of oil, fuel, coolant, brake
fluid, filters and batteries.

A When draining fluids from the engine, place a suitable

container underneath the engine body.

A DO NOT pour waste onto the ground, down a drain, or

into any water source. Dispose of waste fluids according
to environmental regulations.

ENGLISH

SAFE OPERATION6

11. CONDUCTING SAFETY CHECKS & MAINTENANCE

ENGLISH

A When inspecting the engine or servicing, place the

engine on a large flat surface. DO NOT work on anything
that is supported ONLY by lift jacks or a hoist. Always use
blocks or the correct stands to support the engine before
servicing.

A Disconnect the battery from the engine before

conducting service. Put a "DO NOT OPERATE!" tag on
the key switch to avoid accidental starting.

A To avoid sparks from an accidental short circuit always

disconnect the battery's ground cable (-) first and
reconnect it last.

A Be sure to stop the engine and remove the key when

conducting daily and periodic maintenance, service and
cleaning.

A Check or conduct maintenance after the engine, coolant,

muffler, or muffler cover have cooled off completely.

A Always use the appropriate tools and fixtures. Verify that

they are in good condition before performing any service
work. Make sure you understand how to use them before
service.

A Use ONLY correct engine barring techniques for

manually rotating the engine. DO NOT attempt to rotate
the engine by pulling or prying on the cooling fan and V­belt. This practice can cause serious personal injury or
premature damage to the cooling fan and belt.

A Replace fuel pipes and lubricant pipes with their hose

clamps every 2 years or earlier whether they are
damaged or not. They are made of rubber and age
gradually.

A When servicing is performed together by two or more

persons, take care to perform all work safely.

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

7SAFE OPERATION

12. WARNING AND CAUTION LABELS

Part No.19077-8724-1 or 16667-8724-1

(55mm in diameter) (37mm in diameter)

Part No.TA040-4957-1
Do not get your hands close
to engine fan and fan belt.

13. CARE OF WARNING AND CAUTION LABELS

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

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

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

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

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

ENGLISH

8 SAFE OPERATION

ENGLISH

SERVICING OF THE ENGINE

1SERVICING OF THE ENGINE

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

Type Serial No.

Engine

Date of Purchase

Name of Dealer

(To be filled in by purchaser)

ENGLISH

(1) Engine serial number

2 NAMES OF PARTS

NAMES OF PARTS

ENGLISH

(1) Intake manifold
(2) Speed control lever
(3) Engine stop lever
(4) Injection pump
(5) Fuel feed pump
(6) Cooling fan
(7) Fan drive pulley
(8) Oil filter cartridge
(9) Water drain cock

(10) Oil filler plug
(11) Exhaust manifold
(12) Alternator
(13) Starter
(14) Oil level gauge
(15) Oil pressure switch
(16) Flywheel
(17) Oil drain plug
(18) Oil pan
(19) Engine hook

PRE-OPERATION CHECK

BREAK-IN

During the engine break-in period, observe the following by all means:

1. Change engine oil and oil filter cartridge after the first 50 hours of operation. (See "ENGINE OIL" in "PERIODIC
SERVICE" section.)

2. When ambient temperature is low, operate the machine after the engine has been completely warmed up.

DAILY CHECK

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

To avoid personal injury:

A Be sure to install shields and safeguards attached to the engine when operating.
A Stop the engine at a flat and wide space when checking.
A Keep dust or fuel away from the battery, wiring, muffler and engine to prevent a fire.

Check and clear them before operating everyday. Pay attention to the heat of the
exhaust pipe or exhaust gas so that it can not ignite trash.

Item Ref. page

1. Parts which had trouble in previous operation -

2. By walking around the machine (1) Oil or water leaks 15 to 20

(2) Engine oil level and contamination 15,16

(3) Amount of fuel 12

(4) Amount of coolant 18 to 20

(5) Dust in air cleaner dust cup 21

(6) Damaged parts and loosened bolts and nuts -

3. By inserting the key into the starter
switch

4. By starting the engine (1) Color of exhaust fumes 7

(1) Proper functions of meters and pilot lamps; no stains on
these parts

(2) Proper function of glow lamp timer -

(2) Unusual engine noise 7

(3) Engine start-up condition 5

(4) Slow-down and acceleration behavior 7

-

3PRE-OPERATION CHECK

ENGLISH

4 OPERATING THE ENGINE

OPERATING THE ENGINE

ENGLISH

STARTING THE ENGINE(NORMAL)

To avoid personal injury:
A Do not allow children to approach the

machine while the engine is running.

A Be sure to install the machine on

which the engine is installed, on a flat
place.

A Do not run the engine on gradients.
A Do not run the engine in an enclosed

area. Exhaust gas can cause air
pollution and exhaust gas poisoning.

A Keep your hands away from rotating

parts (such as fan, pulley, belt,
flywheel etc.) during operation.

A Do not operate the machine while

under the influence of alcohol or
drugs.

A Do not wear loose, torn or bulky

clothing around the machine. It may
catch on moving parts or controls,
leading to the risk of accident. Use
additional safety items, e.g. hard hat,
safety boots or shoes, eye and
hearing protection, gloves, etc., as
appropriate or required.

A Do not wear radio or music

headphones while operating engine.

A Check to see if it is safe around the

engine before starting.

A Reinstall safeguards and shields

securely and clear all maintenance
tools when starting the engine after
maintenance.

A Do not use ether or any starting fluid for starting the

engine, or a severe damage will occur.

A When starting the engine after a long storage (of more

than 3 months), first set the stop lever to the "STOP"
position and then activate the starter for about 10
seconds to allow oil to reach every engine part.

1. Set the fuel lever to the "ON" position.

(1) Fuel lever (A) "ON"

2. Place the engine stop lever to the
"START" position.

3. Place the speed control lever at more
than half "OPERATION".

(1) Engine stop lever
(2) Speed Control lever

(B) "OFF"

(A) "STOP"
(B) "START"
(C) "IDLING"
(D) "OPERATION"

5OPERATING THE ENGINE

4. Insert the key into the key switch and
turn it to the "OPERATION" position.

(A) "OFF" SWITCHED OFF
(B) "ON" OPERATION
(C) "GL" PREHEATING
(D) "ST" STARTING

(A) "GL" PREHEATING
(B) "OFF" SWITCHED OFF
(C) "ON" OPERATION
(D) "ST" STARTING

5. Turn the starter switch to the
"PREHEATING" position to allow the
glow lamp to redden.

(with lamp timer in use)

A The glow lamp goes out in about 5 seconds when the

lamp timer is up. Refer to this for pre-heating.
Even with the glow lamp off, the glow plug can be pre­heated by turning the starter switch to the
"PREHEATING" position.

6. Turn the key to the "STARTING"
position and the engine should start.
Release the key immediately when the
engine starts.

7. Check to see that the oil pressure lamp
and charge lamp are off. If the lamps
are still on, immediately stop the
engine, and determine the cause.

(See "CHECKS DURING OPERATION" in
"OPERATING THE ENGINE" section.)

A If the oil pressure lamp should be still on, immediately

stop the engine and check;

- if there is enough engine oil.

- if the engine oil has dirt in it.

- if the wiring is faulty.

8. Warm up the engine at medium speed
without load.

A If the glow lamp should redden too quickly or too

slowly, immediately ask your KUBOTA dealer to
check and repair it.

A If the engine does not catch or start at 10 seconds

after the starter switch is set at "STARTING" position,
wait for another 30 seconds and then begin the engine
starting sequence again. Do not allow the starter
motor to run continuously for more than 20 seconds.

COLD WEATHER STARTING

If the ambient temperature is below -5 C(23 F)* and the
engine is very cold, start it in the following manner:
Take steps (1) through (4) above.

5. Turn the key to the "PREHEATING"
position and keep it there for a certain
period mentioned below.

A Shown below are the standard preheating times for

various temperatures. This operation, however, is not
required, when the engine is warmed up.

Ambient temperature Preheating time

Above 10 C (50 F) NO NEED

10 C (50 F) to -5 C (23 F)

*Below -5 C (23 F)

Limit of continuous use

6. Turn the key to the "STARTING"
position and the engine should start.

(If the engine fails to start after 10 seconds, turn off
the key for 5 to 30 seconds. Then repeat steps (5)
and (6).)

A Do not allow the starter motor to run continuously for

more than 20 seconds.

A Be sure to warm up the engine, not only in winter, but

also in warmer seasons. An insufficiently warmed-up
engine can shorten its service life.

A When there is fear of temperature dropping below

-15 C (5 F) detach the battery from the machine, and
keep it indoors in a safe area, to be reinstalled just
before the next operation.

Approx. 5 seconds

Approx. 10 seconds

20 seconds

ENGLISH

OPERATING THE ENGINE6

STOPPING THE ENGINE

1. Return the speed control lever to low

ENGLISH

idle, and run the engine under idling
conditions.

2. Set the engine stop lever to the "STOP"
position.

3. With the starter switch placed to the
"SWITCHED OFF" position, remove the
key. (Be sure to return the engine stop
lever to the "START" position to be
ready for the next start.)

(1) Engine stop lever
(2) Speed control lever

A If equipped with a turbo-charger, allow the engine to

idle for 5 minutes before shutting it off after a full load
operation.
Failure to do so may lead to turbo-charger trouble.

(A) "STOP"
(B) "START"
(C) "IDLING"
(D) "OPERATION"

CHECKS DURING OPERATION

While running, make the following checks to see that all
parts are working correctly.

BRadiator Cooling water(Coolant)

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

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

If the coolant temperature warning lamp lights up or if
steam or coolant does not stop squirting from the radiator
overflow pipe, turn off the load and keep the engine
idling (COOLING-DOWN) for at least 5 minutes to let it
cool down gradually. Then stop the engine and take the
following inspection and servicing.

1. Check to see if the coolant runs short or if there is any
coolant leak;

2. Check to see if there is any obstacle around the
cooling air inlet or outlet;

3. Check to see if there is any dirt or dust between
radiator fins and tube;

4. Check to see if the fan belt is too loose; and

5. Check to see if radiator water pipe is clogged.

BOil pressure lamp

The lamp lights up to warn the operator that the engine oil
pressure has dropped below the prescribed level. If this
should happen during operation or should not go off even
after the engine is accelerated more than 1000rpm,
immediately stop the engine and check the following:

1. Engine oil level (See "ENGINE OIL" in "PERIODIC
SERVICE" section.)

2. Lubricant system (See "ENGINE OIL" in "PERIODIC
SERVICE" section.)

7OPERATING THE ENGINE

BFuel

To avoid personal injury:
A Fluid escaping from pinholes may be

invisible. Do not use hands to search
for suspected leaks; Use a piece of
cardboard or wood, instead. If
injured by escaping fluid, see a
medical doctor at once. This fluid can
produce gangrene or a severe
allergic reaction.

A Check any leaks from fuel pipes or

fuel injection pipes. Use eye
protection when checking for leaks.

Be careful not to empty the fuel tank. Otherwise air may
enter the fuel system, requiring fuel system bleeding.
(See "FUEL" in "PERIODIC SERVICE" section.)

BColor of exhaust

While the engine is run within the rated output range:

A The color of exhaust remains colorless.
A If the output slightly exceeds the rated level, exhaust

may become a little colored with the output level kept
constant.

A If the engine is run continuously with dark exhaust

emission, it may lead to trouble with the engine.

BImmediately stop the engine if;

A The engine suddenly slows down or accelerates.
A Unusual noises are suddenly heard.
A Exhaust fumes suddenly become very dark.
A The oil pressure lamp or the water temperature alarm

lamp lights up.

REVERSED ENGINE REVOLUTION AND
REMEDIES

ENGLISH

To avoid personal injury:
A Reversed engine operation can make

the machine reverse and run it
backwards. It may lead to serious
trouble.

A Reversed engine operation may

make exhaust gas gush out into the
intake side and ignite the air cleaner;
It could catch fire.

Reversed engine revolution must be stopped immediately
since engine oil circulation is cut quickly, leading to
serious trouble.

BHow to tell when the engine starts running

backwards

1. Lubricating oil pressure drops sharply. Oil pressure
warning light, if used, will light.

2. Since the intake and exhaust sides are reversed, the
sound of the engine changes, and exhaust gas will
come out of the air cleaner.

3. A louder knocking sound will be heard when the
engine starts running backwards.

BRemedies

1. Immediately set the engine stop lever to the "STOP"
position to stop the engine.

2. After stopping the engine, check the air cleaner, intake
rubber tube and other parts, and then replace parts as
needed.

8 MAINTENANCE

MAINTENANCE

ENGLISH

To avoid personal injury:
A Be sure to conduct daily checks,

periodic maintenance, refueling or
cleaning on a level surface with the
engine shut off and remove the key.

A Before allowing other people to use

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

A When cleaning any parts, do not use

gasoline but use regular cleanser.

A Always use proper tools, that are in

good condition. Make sure you
understand how to use them, before
performing any service work.

A When installing, be sure to tighten all

bolts lest they should be loose.
Tighten the bolts by the specified
torque.

A Do not put any tools on the battery,

or battery terminals may short out.
Severe burns or fire could result.
Detach the battery from the engine
before maintenance.

A Do not touch muffler or exhaust

pipes while they are hot; Severe
burns could result.

SERVICE INTERVALS

Observe the following for service and maintenance.
The lubricating oil change intervals listed in the table below are for Class CF lubricating oil of API classification with a low­sulfur fuel in use. If the CF-4, CG-4, CH-4 or CI-4 lubricating oil is used with a high-sulfur fuel, change the lubricating oil
at shorter intervals than recommended in the table below depending on the operating condition. (approximately half)

Interval Item

Every 50 hours Check of fuel pipes and clamp bands 14 @

See NOTE Change of engine oil (depending on the oil pan) 15 to 17

Cleaning of air cleaner element 21 *1 @

Cleaning of fuel filter 14

Every 100 hours

Check of battery electrolyte level 22,23

Check of fan belt tightness 24

Draining water separator -

Replacement of oil filter cartridge (depending on the

Every 200 hours

oil pan)

Check of intake air line - @

Every 200 hours of
operation or six

Check of radiator hoses and clamp bands 19

months

Every 400 hours

Replacement of fuel filter cartridge 15 @

Cleaning of water separator -

Removal of sediment in fuel tank -

Every 500 hours

Cleaning of water jacket (radiator interior) 18 to 20

Replacement of fan belt 24

Every one or two
months

Recharging of battery 22,23

Every year Replacement of air cleaner element 21 *2 @

Every 800 hours Check of valve clearance 26

Every 1500 hours Check of fuel injection nozzle injection pressure - *3 @

Every 3000 hours

Check of turbo charger - *3 @

Check of injection pump - *3 @

Change of radiator coolant (L.L.C.) 18 to 20

Replacement of battery 22,23

Every two years

Replacement of radiator hoses and clamp bands 19

Replacement of fuel pipes and clamp bands 14 *3 @

Replacement of intake air line - *4 @

Ref.

page

17

9MAINTENANCE

ENGLISH

10 MAINTENANCE

A The jobs indicated by must be done after the first 50 hours of operation.
*1 Air cleaner should be cleaned more often in dusty conditions than in normal conditions.
*2 After 6 times of cleaning.

ENGLISH

*3 Consult your local KUBOTA Dealer for this service.
*4 Replace only if necessary.

A When the battery is used for less than 100 hours in a year, check its electrolyte yearly. (for refillable battery's only)
A The items listed above (@ marked) are registered as emission related critical parts by KUBOTA in the U.S. EPA

nonroad emission regulation. As the engine owner, you are responsible for the performance of the required
maintenance on the engine according to the above instruction.
Please see the Warranty Statement in detail.

A Changing interval of engine oil

Models

124 mm (4.88 in.) *90 mm (3.54 in.)

All models 200 Hrs 150 Hrs

Initial 50 Hrs

* 90 mm (3.54 in.) oil pan depth is optional.
(Standard replacement interval)

A American Petroleum Institute (API) classification: above CF
A Ambient temperature: below 35 C (95 F)

Lubricating oil

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).

A Lubricating oil recommended when a low-sulfur or high-sulfur fuel is employed.

: Recommendable X : Not recommendable

Lubricating

oil classification

CF *TBN 10

CF-4 X

CG-4 X

CH-4 X

CI-4 X

Low-sulfur High-sulfur

* TBN: Total Base Number
**Fuel
A 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.

A Use of diesel fuel with sulfur content less than 0.10 % (1000 ppm) is strongly recommended.
A 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).

A DO NOT USE Fuels that have sulfur content greater than 1.0 % (10000 ppm).
A 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 (14 ).

1) 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.%

A 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 pan depth

**Fuel

Remarks

11MAINTENANCE

A Oil used in the engine should have API classification and Proper SAE Engine Oil according to the ambient

temperatures as shown below:

Above 25 (77 ) SAE30, SAE10W-30 or 15W-40

0 to 25 (32 to 77 ) SAE20, SAE10W-30 or 15W-40

Below 0 (32 ) SAE10W, SAE10W-30 or 15W-40

A Recommended API classification

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)]

Low Sulfur Fuel
[Sulfur Content <

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

0.0015 % (15 ppm)]

EGR: Exhaust Gas Re-circulation

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))

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

Engines with non-EGR

Engines with internal EGR

Engines with external EGR

---

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

ENGLISH

12 PERIODIC SERVICE

PERIODIC SERVICE

ENGLISH

FUEL

Fuel is flammable and can be dangerous. You should
handle fuel with care.

To avoid personal injury:
A Do not mix gasoline or alcohol with

diesel fuel. This mixture can cause
an explosion.

A Be careful not to spill fuel during

refueling. If fuel should spill, wipe it
off at once, or it may cause a fire.

A Do not fail to stop the engine before

refueling. Keep the engine away from
the fire.

A Be sure to stop the engine while

refueling or bleeding and when
cleaning or changing fuel filter or fuel
pipes. Do not smoke when working
around the battery or when refueling.

A Check the fuel systems at a well

ventilated and wide place.

A When fuel and lubricant are spilled,

refuel after letting the engine cool off.

A Always keep spilled fuel and

lubricant away from engine.

BFuel level check and refueling

1. Check to see that the fuel level is above the lower limit
of the fuel level gauge.

2. If the fuel is too low, add fuel to the upper limit. Do not
overfill.

Carbon

Residue on,

10 percent
Residuum,

%

Viscosity

Kinematic

cSt or

mm /s at

40

1.9 4.1 32.6 40.1

Ash,

weight

%

Viscosity
Saybolt,

SUS at

37.8 (100 )

()

90%

Point

Water and
Sediment,

volume

%

0.05 0.35 0.01

338

(640)

Flash Point,

()

Min Max Max Max

52

(125)

Distillation

Temperatures,

Min Max Min Max Min Max

282

(540)

Sulfur,

weight

%

Max Max Min

0.50 No. 3 40

A Cetane Rating : The minimum recommended Fuel

Cetane Rating is 45. A cetane rating greater than 50
is preferred, especially for ambient temperatures
below -20 (-4 ) or elevations above 1500 m (5000
ft).

A 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.

A Use of diesel fuel with sulfur content less than 0.10 %

(1000 ppm) is strongly recommended.

A 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).

A DO NOT USE Fuels that have sulfur content greater

than 1.0 % (10000 ppm).

A Diesel fuels specified to EN 590 or ASTM D975 are

recommended.

A No.2-D is a distillate fuel of lower volatility for engines

in industrial and heavy mobile service.
(SAE J313 JUN87)

A 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 (14 ).

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.%

Copper

Strip

Corrosion

Cetane

Number

13PERIODIC SERVICE

A Be sure to use a strainer when filling the fuel tank, or

dirt or sand in the fuel may cause trouble in the fuel
injection pump.

A For fuel, always use diesel fuel. You are required not

to use alternative fuel, because its quality is unknown
or it may be inferior in quality. Kerosene, which is very
low in cetane rating, adversely affects the engine.
Diesel fuel differs in grades depending on the
temperature.

A Be careful not to let the fuel tank become empty, or air

can enter the fuel system, necessitating bleeding
before next engine start.

BAir bleeding the fuel system

To avoid personal injury;
A Do not bleed a hot engine as this

could cause fuel to spill onto a hot
exhaust manifold creating a danger
of fire.

Air bleeding of the fuel system is required if;
A after the fuel filter and pipes have been detached and

refitted;

A after the fuel tank has become empty; or
A before the engine is to be used after a long storage.

[PROCEDURE ] (gravity feed fuel tanks only)

1. Fill the fuel tank to the fullest extent. Open the fuel
filter lever.

2. Open the air vent cock on top of the fuel injection
pump.

3. Turn the engine, continue it for about 10 seconds,
then stop it, or move the fuel feed pump lever by hand
(optional).

4. Close the air vent cock on top of the fuel injection
pump.

[GRAVITY FEED SYSTEM]

(1) Air vent cock
(2) Fuel feed pump

[PROCEDURE ] (fuel tanks lower than injection
pump)

1. For fuel tanks that are lower than the injection pump.
The fuel system must be pressurized by the fuel
system electric fuel pump.

2. If an electric fuel pump is not used, you must manually
actuate the pump by lever to bleed.

3. The primary fuel filter must be on the pressure side of
the pump if the fuel tank is lower than the injection
pump.

4. To bleed, follow (2) through (4) above.

A Tighten air vent plug of the fuel injection pump except

when bleeding, or it may stop the engine suddenly.

[TANK BELOW INJECTION PUMP SYSTEM]

ENGLISH

A Always keep the air vent cock on the fuel injection

pump closed except when air is vented, or it may
cause the engine to stop.

(1) Fuel tank below injection pump
(2) Pre-filter
(3) Electric or Mechanical pump
(4) Main Filter
(5) Injection pump

PERIODIC SERVICE14

BChecking the fuel pipes

ENGLISH

To avoid personal injury;
A Check or replace the fuel pipes after

stopping the engine. Broken fuel
pipes can cause fires.

Check the fuel pipes every 50 hours of operation. When if;

1. If the clamp band is loose, apply oil to the screw of the
band, and tighten the band securely.

2. If the fuel pipes, made of rubber, become worn out,
replace them and clamp bands every 2 years.

3. If the fuel pipes and clamp bands are found worn or
damaged before 2 years' pass, replace or repair them
at once.

4. After replacement of the pipes and bands, air-bleed
the fuel system.

A When the fuel pipes are not installed, plug them at

both ends with clean cloth or paper to prevent dirt from
entering. Dirt in the pipes can cause fuel injection
pump malfunction.

BCleaning the fuel filter pot

Every 100 hours of operation, clean the fuel filter in a
clean place to prevent dust intrusion.

1. Close the fuel filter lever.

(1) Fuel filter lever
(2) Fuel filter pot

2. Remove the top cap, and rinse the inside with diesel
fuel.

3. Take out the element, and rinse it with diesel fuel.

4. After cleaning, reinstall the fuel filter, keeping out of
dust and dirt.

5. Air-bleed the injection pump.

A Entrance of dust and dirt can cause a malfunction of

the fuel injection pump and the injection nozzle. Wash
the fuel filter cup periodically.

(A) "OFF"
(B) "ON"

(1) Clamp band
(2) Fuel pipe

(1) O ring
(2) Filter element
(3) Spring
(4) Filter bowl
(5) Screw ring

15PERIODIC SERVICE

BFuel filter cartridge replacement

1. Replace the fuel filter cartridge with a new one every
400 operating hours.

2. Apply fuel oil thinly over the gasket and tighten the
cartridge into position by hand-tightening only.

3. Finally, vent the air.

A Replace the fuel filter cartridge periodically to prevent

wear of the fuel injection pump plunger or the injection
nozzle, due to dirt in the fuel.

(1) Fuel filter cartridge
(2) Air vent plug
(3) O ring
(4) Pipe joint
(5) Cover

ENGINE OIL

To avoid personal injury:
A Be sure to stop the engine before

checking and changing the engine
oil and the oil filter cartridge.

A Do not touch muffler or exhaust

pipes while they are hot; Severe
burns could result. Always stop the
engine and allow it to cool before
conducting inspections,
maintenance, or for a cleaning
procedure.

A Contact with engine oil can damage

your skin. Put on gloves when using
engine oil. If you come in contact
with engine oil, wash it off
immediately.

A Be sure to inspect the engine, locating it on a level

place. If placed on gradients accurately, oil quantity
may not be measured.

BChecking oil level and adding engine oil

1. Check the engine oil level before starting or more than
5 minutes after stopping the engine.

2. Remove the oil level gauge, wipe it clean and reinstall
it.

3. Take the oil level gauge out again, and check the oil
level.

ENGLISH

(1) Oil filler plug
(2) Oil level gauge

[Lower end of oil level gauge]
(A) Engine oil level within this
range is proper.

PERIODIC SERVICE16

4. If the oil level is too low, remove the oil filler plug, and
add new oil to the prescribed level.

5. After adding oil, wait more than 5 minutes and check
the oil level again. It takes some time for the oil to drain

ENGLISH

down to the oil pan.

Engine oil quantity

*Oil pan depth

Models

D1503-M-E3
D1703-M-E3
D1803-M-E3

D1703-M-E3BG

V2003-M-E3
V2203-M-E3
V2403-M-E3

V2403-M-T-E3

V2003-M-E3BG

V2003-M-T-E3BG

V2203-M-E3BG
V2403-M-E3BG

* 90 mm (3.54 in.) oil pan depth is optional.
Oil quantities shown are for standard oil pans.

A Engine oil should be MIL-L-2104C or have properties

of API classification CF or higher.
Change the type of engine oil according to the
ambient temperature.

Above 25 C (77 F)

0 C to 25 C (32 F to 77 F)

Below 0 C (32 F)

A When using oil of different brands from the previous

one, be sure to drain all the previous oil before adding
the new engine oil.

124 mm

(4.88 in.)

7.0 L

(1.85 U.S.gals.)

9.5 L

(2.51 U.S.gals.)

SAE30 or SAE10W-30

SAE20 or SAE10W-30

SAE10W or SAE10W-30

*90 mm

(3.54 in.)

5.6 L

(1.48 U.S.gals.)

7.6 L

(2.01 U.S.gals.)

SAE15W-40

SAE15W-40

SAE15W-40

BChanging engine oil

To avoid personal injury:
A Be sure to stop the engine before

draining engine oil.

A When draining engine oil, place

some container underneath the
engine and dispose it according to
local regulations.

A Do not drain oil after running the

engine. Allow engine to cool down
sufficiently.

1. Change oil after the initial 50 hours of operation and
every 200 hours thereafter. (See table below.)

A Changing interval thereafter

Models

All models 200 Hrs 150 Hrs

Initial 50 Hrs

* 90 mm (3.54 in) oil pan depth is optional.
(Standard replacement interval)

A API classification : above CF
A Ambient temperature : below 35 C (95 F )

2. Remove the drain plug at the bottom of the engine,
and drain all the old oil. Drain oil will drain easier when
the oil is warm.

124 mm (4.88 in.) *90 mm (3.54 in.)

*Oil pan depth

(1) Oil drain plug

3. Add new engine oil up to the upper limit of the oil level
gauge.

17PERIODIC SERVICE

BReplacing the oil filter cartridge

To avoid personal injury:
A Be sure to stop the engine before

changing the oil filter cartridge.

A Allow engine to cool down

sufficiently, oil can be hot and cause
burns.

1. Replace the oil filter cartridge. Oil filter cartridge
should be replaced, as following operation hours.

Models

All models 200 Hrs 150 Hrs

Initial 50 Hrs

* 90 mm (3.54 in.) oil pan depth is optional.

2. Remove the old oil filter cartridge with a filter wrench.

3. Apply a film of oil to the gasket for the new cartridge.

4. Screw in the cartridge by hand. When the gasket
contacts the seal surface, tighten the cartridge enough
by hand. Because, if you tighten the cartridge with a
wrench, it will be tightened too much.

124 mm (4.88 in.) *90 mm (3.54 in.)

*Oil pan depth

RADIATOR

Coolant will last for one day's work if filled all the way up
before operation start. Make it a rule to check the coolant
level before every operation.

To avoid personal injury:
A Do not stop the engine suddenly,

stop it after about 5 minutes of
unloaded idling.

A Work only after letting the engine and

radiator cool off completely (more
than 30 minutes after it has been
stopped).

A Do not remove the radiator cap while

coolant is hot. When cool to the
touch, rotate cap to the first stop to
allow excess pressure to escape.
Then remove cap completely.
If overheats should occur, steam
may gush out from the radiator or
recovery tank; Severe burns could
result.

ENGLISH

(1) Oil filter cartridge
(2) Remove with a filter wrench
(Tighten with your hand)

5. After the new cartridge has been replaced, the engine
oil level normally decreases a little. Thus, run the
engine for a while and check for oil leaks through the
seal before checking the engine oil level. Add oil if
necessary.

A Wipe off any oil sticking to the machine completely.

PERIODIC SERVICE18

BChecking coolant level, adding coolant

1. Remove the radiator cap, after the engine has

ENGLISH

completely cooled, and check to see that coolant
reaches the supply port.

(1) Radiator pressure cap

2. If the radiator is provided with a recovery tank, check
the coolant level of the recovery tank. When it is
between the "FULL" and "LOW" marks, the coolant
will last for one day's work.

3. When the coolant level drops due to evaporation, add
water only up to the full level.

4. Check to see that two drain cocks; one is at the
crankcase side and the other is at the lower part of the
radiator as figures below.

(1) Recovery tank (A) "FULL"

(B) "LOW"

(1) Coolant drain cock

A If the radiator cap has to be removed, follow the

caution and securely retighten the cap.

A If coolant should be leak, consult your local KUBOTA

dealer.

A Make sure that muddy or sea water does not enter the

radiator.

A Use clean, fresh water and 50% anti-freeze to fill the

recovery tank.

A Do not refill recovery tank with coolant over the

"FULL" level mark.

A Be sure to close the radiator cap securely. If the cap is

loose or improperly closed, coolant may leak out and
decrease quickly.

19PERIODIC SERVICE

BChanging coolant

1. To drain coolant, always open both drain cocks and
simultaneously open the radiator cap as well. With the
radiator cap kept closed, a complete drain of water is
impossible.

2. Remove the overflow pipe of the radiator pressure cap
to drain the recovery tank.

3. Prescribed coolant volume (U.S.gallons)

Models Quantity

D1503-M-E3
D1703-M-E3

D1703-M-E3BG

D1803-M-E3 5.8 L (1.53 U.S.gals.)

V2003-M-E3
V2203-M-E3

V2003-M-E3BG

V2003-M-T-E3BG

V2203-M-E3BG

V2403-M-E3

V2403-M-T-E3

V2403-M-E3BG

A Coolant quantities shown are for standard radiators.

4. An improperly tightened radiator cap or a gap between
the cap and the seat quickens loss of coolant.

5. Coolant (Radiator cleaner and anti-freeze)

Season Coolant

Summer

Winter (when temperature

drops below 0 C (32 F))

or all season

5.5 L (1.45 U.S.gals.)

8.1 L (2.14 U.S.gals.)

8.4 L (2.22 U.S.gals.)

Pure water and radiator

cleaner

Pure water and anti-freeze

(See "Anti-freeze" in

“RADIATOR” section.)

BRemedies for quick decrease of coolant

1. Check any dust and dirt between the radiator fins and
tube. If any, remove them from the fins and the tube.

2. Check the tightness of the fan belt. If loose, tighten it
securely.

3. Check the internal blockage in the radiator hose. If
scale forms in the hose, clean with the scale inhibitor
or its equivalent.

BChecking radiator hoses and clamp

bands

To avoid personal injury:
A Be sure to check radiator hoses and

clamp bands periodically. If radiator
hose is damaged or coolant leaks,
overheats or severe burns could
occur.

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 hose
clamp 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.

BPrecaution at overheating

The event that the coolant temperature is nearly or more
than the boiling point is called "OVERHEATING".
While running, make the following checks to see that all
parts are working correctly. If anything is unusual,

inspect it, referring to the relevant description in
"MAINTENANCE" and "PERIODIC SERVICE" section.

C Coolant

If the coolant temperature warning lamp lights up or if
steam or coolant does not stop squirting from the radiator
overflow pipe, turn off the load and keep the engine
idling (COOLING-DOWN) for at least 5 minutes to let it
cool down gradually. Then stop the engine and take the
following inspection and servicing.

1. Check to see if the coolant runs short or if there is any
coolant leak;

2. Check to see if there is any obstacle around the
cooling air inlet or outlet;

3. Check to see if there is any dirt or dust between
radiator fins and tube;

4. Check to see if the fan belt is too loose; and

5. Check to see if radiator water pipe is clogged.

ENGLISH

BCleaning radiator core (outside)

If dust is between the fin and tube, wash it away with
running water.

A Do not clean radiator with firm tools such as spatulas

or screwdrivers. They may damage specified fin or
tube. It can cause coolant leaks or decrease cooling
performance.

PERIODIC SERVICE20

BCleaning the radiator (inside)

1. Clean up the coolant line inside in the following cases.

ENGLISH

A As per the SERVICE INTERVALS list.
A When changing the coolant.

2. Use a radiator cleaning agent. This helps wash
away scale deposits.

BAnti-freeze

To avoid personal injury:
A When using anti-freeze, put on some

protection such as rubber gloves
(Anti-freeze contains poison.).

A If should drink anti-freeze, throw up

at once and take medical attention.

A When anti-freeze comes in contact

with the skin or clothing, wash it off
immediately.

A Do not mix different types of anti-

freeze. The mixture can produce
chemical reaction causing harmful
substances.

A Anti-freeze is extremely flammable

and explosive under certain
conditions. Keep fire and children
away from anti-freeze.

A When draining fluids from the

engine, place some container
underneath the engine body.

A Do not pour waste onto the grounds,

down a drain, or into any water
source.

A Also, observe the relevant

environmental protection
regulations when disposing of anti­freeze.

Vol %

Anti-freeze

50 -37 -34 108 226

*At 1.013 x 10 Pa (760 mmHg) pressure
(atmospheric). A higher boiling point is obtained by
using a radiator pressure cap which permits the
development of pressure within the cooling system.

5. Adding the LLC
(1) Add only water if the coolant level reduces in the

cooling system by evaporation.

(2) If there is a coolant leak, add the LLC of the same

manufacturer and type in the same coolant

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.)

6. When the LLC is mixed, do not employ any radiator
cleaning agent. The LLC contains anti-corrosive
agent. If mixed with the cleaning agent, sludge may
build up, adversely affecting the engine parts.

7. Kubota's genuine long-life coolant has a service life of
2 years. Be sure to change the coolant every 2 years.

A The above data represents industry standards that

necessitate minimum glycol content in the
concentrated anti-freeze.

Freezing Point Boiling Point *

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

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

2. Before employing LLC-mixed cooling water, flush the
radiator with fresh water. Repeat this procedure 2 or 3
times to clean up the radiator and engine block from
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 anti-freeze
differs according to the make of the anti-freeze. Refer
to SAE J1034 standard, more specifically also to SAE
J814c.

21PERIODIC SERVICE

AIR CLEANER

Since the air cleaner employed on this engine is a dry
type, never apply oil to it.

1. Open the evacuator valve once a week under ordinary
conditions - or daily when used in a dusty place. This
will get rid of large particles of dust and dirt.

2. Wipe the inside air cleaner clean with cloth if it is dirty
or wet.

3. Avoid touching the element except when cleaning.

4. When dry dust adheres to the element, blow
compressed air from the inside turning the element.
Pressure of compressed air must be under 205 kPa
(2.1 kgf/cm , 30 psi).

5. Replace the element every year or every 6 cleanings.

(1) Air cleaner body
(2) Element
(3) Wing bolt
(4) Evacuator valve

BEvacuator 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.

BFor the air cleaner with a dust cup

(optional)

Remove and clean out the dust cup before it becomes
half full with dust; usually once a week, or even every day
if the working surroundings are dusty.
Install the air cleaner dust cup with "TOP" indicated on the
rear of the cup in the up position. (However, it may be
installed in either direction when the cover is placed at the
lower part.)

A If the dust cup is mounted incorrectly, dust or dirt does

not collect in the cup, and direct attachments of the
dust to the element will cause its lifetime to shorten to
a great extent.

ENGLISH

A Make sure the wing bolt for the element is tight

enough. If it is loose, dust and dirt may be sucked in,
wearing down the cylinder liner and piston ring earlier
and thereby resulting in poor power output.

A Do not overservice the air cleaner element.

Overservicing may cause dirt to enter the engine
causing premature wear. Use the dust indicator as a
guide on when to service.

(1) Air cleaner body
(2) Element
(3) Wing bolt
(4) Dust cup
(5) "TOP" mark

PERIODIC SERVICE22

BDust indicator (optional)

If the red signal on the dust indicator attached to the air

ENGLISH

cleaner is visible, the air cleaner has reached the service
level.
Clean the element immediately, and reset the signal with
the "RESET" button.

(1) "RESET" button
(2) Dust indicator
(3) Service level
(4) Signal

BATTERY

To avoid personal injury:
A Be careful not to let the battery

electrolyte contact your body or
clothing.

A Wear eye protection and rubber

gloves, since the diluted sulfuric acid
solution burns skin and eats holes in
clothing. Should this occur,
immediately wash it off with running
water and get medical attention.

Mishandling of the battery shortens the service life and
adds to maintenance costs. Obtain the maximum
performance and the longest life of the battery by
handling properly and with care.
Engine starting will be more difficult, if the battery charge
is low. Be careful to recharge it at an early occasion
before it is too late.

BBattery charging

The battery comes in two types:
refillable and non-refillable.

A For using the refillable type battery,

follow the instructions below.
Do not use or charge the battery if its
fluid level stands below the LOWER
(lower limit level) mark.
Otherwise, the battery component
parts may deteriorate earlier than
expected, which may shorten the
battery's service life or cause an
explosion.
Immediately, add distilled water until
the battery's fluid level is between
the UPPER and LOWER levels.

To avoid personal injury:
A When the battery is being activated,

hydrogen and oxygen gases in the
battery are extremely explosive.
Keep open sparks and flames away
from the battery at all times,
especially when charging the
battery.

A When charging the battery, remove

the battery vent plugs.

A When disconnecting the cable from

the battery, start with the negative
terminal, and when connecting them,
start with the positive terminal first.

A DO NOT check the battery charge by

placing a metal object across the
terminals. Use a voltmeter or
hydrometer.

1. Make sure each electrolyte level is to the bottom of
vent wells, if necessary, add only distilled water in a
well-ventilated place.

23PERIODIC SERVICE

ENGLISH

(1) Battery electrolyte level (A) "TOO LOW"

2. To slow charge the battery, connect the charger
positive terminal to the battery positive terminal, and
the negative to the negative, then recharge in the
standard fashion.

3. Quick recharging charges the battery at a high rate in
a short time. This is only for emergencies.

4. Recharge the battery as early as possible, or battery
life will be extremely shortened.

5. When exchanging an old battery for a new one, use
battery of equal specification shown in Page 28 .

(1) Thick cable red(+)
(2) Battery case
(3) Earth cable black(-)

(B) "PROPER"
(C) "TOO HIGH"

(1) Plug (A) "HIGHEST LEVEL"

A Connect the charger positive terminal to the battery

positive terminal, and negative to the negative.

A When disconnecting the cable from the battery, start

with the negative terminal first.
When connecting the cable to the battery, start with
the positive terminal first.
If reversed, the contact of tools on the battery may
cause a short.

(B) "LOWEST LEVEL"

BDirection for long term storage

1. When storing the engine for long periods of time,
remove the battery, adjust the electrolyte to the proper
level, and store in a dry and dark place.

2. The battery naturally discharges while it is stored.
Recharge it once a month in summer, and every 2
months in winter.

ELECTRIC WIRING

To avoid personal injury:
C Shorting of electric cable or wiring

may cause a fire.
A Check to see if electric cables and

wiring are swollen, hardened or
cracked.

A Keep dust and water away from all

power connections.
Loose wiring terminal parts, make
bad connections. Be sure to repair
them before starting the engine.

Damaged wiring reduces the capacity of electrical parts.
Change or repair damaged wiring immediately.

PERIODIC SERVICE24

FAN BELT

BAdjusting Fan Belt Tension

ENGLISH

To avoid personal injury:
A Be sure to stop the engine and

remove the key before checking the
belt tension.

A Be sure to reinstall the detached

safety shield after maintenance or
checking.

Proper fan belt
tension

1. Stop the engine and remove the key.

2. Apply moderate thumb pressure to belt between the
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 If belt is loosen or damaged and the fan is damaged,

it could result in overheats or insufficient charging.
Correct or replace belt.

A deflection of between 7 to 9 mm
(0.28 to 0.35 in.) when the belt is
pressed in the middle of the span.

(1) Fan belt
(2) Bolt and nut

(A) 7 to 9 mm (0.28 to 0.35 in.)
(under load of 10 kgf (22.1 lbs))

CARRIAGE AND STORAGE

CARRIAGE

STORAGE

25CARRIAGE AND STORAGE

ENGLISH

To avoid personal injury:
A Fix the engine securely not to fall

during operation.

A Do not stand near or under the

engine while carrying it.

A The engine is heavy. In handling it,

be very alert not to get your hands
and body caught in.

1. Use carrier such as crane when carrying the engine,
or hurt your waist and yourself. Support the engine
securely with rope not to fall while carrying it.

2. When lifting the engine, put the hook securely to metal
fittings attached to the engine. Use strong hook and
fittings enough to hang the engine.

To avoid personal injury:
A Do not clean the machine with engine

running.

A To avoid the danger of exhaust fume

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

A When storing the engine just after

running, let the engine cool off.

Before storing the engine for more than a few months,
remove any dirt on the machine, and:

1. Drain the coolant in the radiator. Open the cock at the
bottom of the radiator, and remove the pressure cap
to drain water completely. Leave the cock open. Hang
a note written "No water" on the pressure cap. Since
water may freeze when the temperature drops below
0 C (32 F), it is very important that no water is left in
the machine.

A When using anti-freeze, it is not necessary to take

step (1) above.

2. Remove dirty engine oil, fill with new oil and run the
engine for about 5 minutes to let the oil penetrate to all
the parts.

3. Check all the bolts and nuts, and tighten if necessary.

4. Remove the battery from the engine, adjust the
electrolyte level, and recharge it. Store the battery in a
dry and dark place.

5. When the engine is not used for a long period of time,
run it for about 5 minutes under no load every 2 to 3
months to keep it free from rust. If the engine is stored
without any running, moisture in the air may condense
into dew over the sliding parts of the engine, resulting
in rust there.

6. If you forget to run the engine for longer than 5 to 6
months, apply enough engine oil to the valve guide
and valve stem seal and make sure the valve works
smoothly before starting the engine.

7. Store the engine in a flat place and remove the key
from engine.

8. Do not store the engine in a place where has
flammable materials such as dry grass or straw.

9. When covering the engine for storage, let engine and
muffler cool off completely.

10. Operate the engine after checking and repairing
damaged wirings or pipes, and clearing flammable
materials carried by mouse.

26 TROUBLESHOOTING

TROUBLESHOOTING

ENGLISH

If the engine does not function properly, use the following chart to identify and correct the cause.

B When it is difficult to start the engine B When output is insufficient

Cause Countermeasures

*

Check the fuel tank and fuel filter.

*

Remove water, dirt and other

Fuel is thick and
doesn't flow.

Air or water mixed
in fuel system

Valve clearance is
not as specified.

Leaking valves * Grind valve.

Fuel injection timing
is not as specified.

Engine oil becomes
thick in cold
weather and engine
cranks slow.

Low compression*

Battery is
discharged and the
engine will not
crank.

impurities.

*

As all fuel will be filtered by the filter, if
there should be water or other foreign
matters on the filter, clean the filter
with kerosene.

*

If air is in the fuel filter or injection lines,
the fuel pump will not work properly.

*

To attain proper fuel injection
pressure, check carefully for loosened
fuel line coupling, loose cap nut, etc.

*

Loosen joint bolt stop fuel filter and air
vent screws of fuel injection pump to
eliminate all the air in the fuel system.

*

Adjust valve clearance to 0.18 to 0.22
mm (0.007 to 0.0087 in.) when the
engine is cold.
[D1703-M-E3BG, V2003-M-E3BG,
V2003-M-T-E3BG, V2203-M-E3BG,
V2403-M-E3BG]

0.145 to 0.185 mm
(0.0057 to 0.0072 in.)

* Check injection timing

* Change grade of oil according to the

weather (temperature.)

Bad valve or excessive wear of rings,
pistons and liners cause insufficient
compression. Replace with new parts.

*

Charge battery.

*

In winter, always remove battery from
machine, charge fully and keep
indoors. Install in machine at time of
use.

Cause Countermeasures

Compression is
insufficient.
Leaking valves

Fuel is insufficient. * Check fuel system.

Overheating of
moving parts

Valve clearance is
not as specified.

Air cleaner is dirty

Fuel injection
pressure is wrong.*

Injection pump
wear

*

*

*
*

*

*

*
*

*

* Clean the element every 100 hours of

*

*

Bad valve and excessive wear of rings,
pistons and liners cause insufficient
compression. Replace with new parts.
Grind valves.

Check lubricating oil system.
Check to see if lubricating oil filter is
working properly.
Filter element deposited with
impurities would cause poor
lubrication. Change element.
Check the clearance of bearing are
within factory specs.
Check injection timing.
Adjust timing

Adjust to proper valve clearance of

0.18 to 0.22 mm (0.007 to 0.087 in.)
with engine cold.
[D1703-M-E3BG, V2003-M-E3BG,
V2003-M-T-E3BG, V2203-M-E3BG,
V2403-M-E3BG]

0.145 to 0.185 mm
(0.0057 to 0.0072 in.)

operation.

Check injection pressure.

13.7 MPa (140 kgf/cm , 1991 psi)

Do not use poor quality fuel as it will
cause wear of the pump. Only use No.
2-D diesel fuel.(See "FUEL" in
"PERIODIC SERVICE" Section)
Check the fuel injection pump e lement
and delivery valve assembly and
replace as necessary.

A If the cause of trouble can not be found, contact your KUBOTA dealer.

27TROUBLESHOOTING

B When engine suddenly stops

Cause Countermeasures

*

Check the fuel tank and refill the fuel,

Lack of fuel

Bad nozzle

Moving parts are
overheated due to
shortage of
lubrication oil or
improper
lubrication.

if necessary.

*

Also check the fuel system for air or
leaks.

* If necessary, replace with a new

nozzle.

*

Check amount of engine oil with oil
level gauge.

*

Check lubricating oil system.

*

At every 2 times of oil change, oil filter
cartridge should be replaced.

*

Check to see if the engine bearing
clearances is within factory specs.

B When color of exhaust is especially bad

Cause Countermeasures

Fuel governing
device bad

Fuel is of extremely
poor quality.

Nozzle is bad. * If necessary, replace with new nozzle.

Combustion is
incomplete.

* Contact dealer for repairs.

* Select good quality fuel.

Use No. 2-D diesel fuel only.

*

Cause is poor atomization, improper
injection timing, etc. Because of
trouble in injection system or in poor
valve adjustment, or compression
leakage, poor compression, etc.
Check for the cause.

B When engine must be stopped immediately

Cause Countermeasures

Engine revolution
suddenly
decreases or
increases.

Unusual sound is
heard suddenly.

Color of exhaust
suddenly turns
dark.

Bearing parts are
overheated.

Oil lamp lights up
during operation.

* Check the adjustments, injection

timing and the fuel system.

* Check all moving parts carefully.

* Check the fuel injection system,

especially the fuel injection nozzle.

* Check the lubricating system.

*

Check the lubricating system.

*

Check, if the engine bearing
clearances are within factory specs.

*

Check the function of the relieve valve
in the lubricating system.

*

Check pressure switch.

*

Check filter base gasket.

B When engine overheats

Cause Countermeasures

Engine oil
insufficient

Fan belt broken or
elongated

Coolant insufficient * Replenish coolant.

Excessive
concentration of
antifreeze

Radiator net or
radiator fin clogged
with dust

Inside of radiator or
coolant flow route
corroded

Fan or radiator or
radiator cap
defective

Thermostat
defective

Temperature gauge
or sensor defective*

Overload running * Reduce load.

Head gasket
defective or water
leakage

Incorrect injection
timing

Unsuitable fuel
used

* Check oil level. Replenish oil as

required.

* Change belt or adjust belt tension.

* Add water only or change to coolant

with the specified mixing ratio.

* Clean net or fin carefully.

* Clean or replace radiator and parts.

* Replace defective parts.

* Check thermostat and replace if

necessary.

Check temperature with thermometer
and replace if necessary.

* Replace parts.

* Adjust to proper timing.

* Use the specified fuel.

ENGLISH

28 SPECIFICATIONS

SPECIFICATIONS

ENGLISH

Model D1503-M-E3 D1703-M-E3 D1803-M-E3

Type Vertical, water-cooled, 4-cycle diesel engine

Number of cylinders 3

Bore and stroke
mm (in.)

Total displacement
L (cu.in.)

Combustion chamber Spherical Type (E-TVCS)

SAE NET Intermittent kW / rpm
H.P. (SAEJ1349) (HP / rpm)

SAE NET Continuous kW / rpm
H.P. (SAEJ1349) (HP / rpm)

Maximum bare speed rpm 3000 2900

Minimum bare idling speed
rpm

Order of firing 1-2-3

Direction of rotation Counter-clockwise (viewed from flywheel side)

Injection pump Bosch Type mini pump

Injection pressure 13.73 MPa, 1991 psi (140 kgf/cm )

Injection timing
(Bef ore T.D .C.)

Compression ratio 22.8 22.0 24.3

Fuel Diesel Fuel No.2-D

Lubricant
(API classification)

Dimension mm (in.)
(length x width x height)

Dry weight (BB Spec.) kg (lbs.) 148 (326.3) 151 (332.9)

Starting system Cell starter (with glow plug)

Starting motor 12 V, 1.4 kW 12 V, 2.0 kW

Charging generator 12 V, 480 W

Recommended battery capacity 12 V, 70 to 80 AH

83 x 92.4

(3.27 x 3.64)

1.499

(91.44)

21.7 / 2800

(29.1 / 2800)

18.8 / 2800

(25.2 / 2800)

0.28 rad
(16.25 )

572.1 x 499.0 x 643.0
(22.5 x 19.8 x 25.3)

87 x 92.4

(3.43 x 3.64)

1.647

(100.51)

24.3 / 2800

(32.6 / 2800)

21.1 / 2800

(28.3 / 2800)

750 to 850

above CF

87 x 102.4

(3.43 x 4.04)

(111.43)

26.5 / 2700

(35.5 / 2700)

23.0 / 2700

(30.8 / 2700)

0.30 rad
(17.25 )

575.9 x 499.0 x

(22.7 x 19.8 x 27.0)

100 to 120 AH

1.826

684.0

12 V,

A Specifications are subject to change without notice.

Model V2003-M-E3 V2203-M-E3

Type Vertical, water-cooled, 4-cycle diesel engine

Number of cylinders 4

Bore and stroke
mm (in.)

Total displacement
L (cu.in.)

83 x 92.4

(3.27 x 3.64)

1.999

(121.94)

87 x 92.4

(3.43 x 3.64)

2.197

(134.07)

Combustion chamber Spherical Type (E-TVCS)

SAE NET Intermittent kW / rpm
H.P. (SAEJ1349) (HP / rpm)

SAE NET Continuous kW / rpm
H.P. (SAEJ1349) (HP / rpm)

29.8 / 2800

(39.9 / 2800)

25.9 / 2800

(34.7 / 2800)

33.1 / 2800

(44.4 / 2800)

28.7 / 2800

(38.5 / 2800)

Maximum bare speed rpm 3000

Minimum bare idling speed
rpm

750 to 850

Order of firing 1-3-4-2

Direction of rotation Counter-clockwise (viewed from flywheel side)

Injection pump Bosch Type mini pump

Injection pressure 13.73 MPa, 1991 psi (140 kgf/cm )

Injection timing
(Be fore T.D .C.)

0.30 rad
(17.25 )

Compression ratio 22.8 22.0

Fuel Diesel Fuel No.2-D

Lubricant
(API classification)

Dimension mm (in .)
(length x width x height)

above CF

667.1 x 499.0 x 633.5
(26.3 x 19.8 x 24.9)

Dry weight (BB Spec.) kg (lbs.) 180 (396.9)

Starting system Cell starter (with glow plug)

Starting motor 12 V, 1.4 kW

Charging generator 12 V, 480 W

Recommended battery capacity 12 V, 100 to 120 AH

29SPECIFICATIONS

ENGLISH

A Specifications are subject to change without notice.

30 SPECIFICATIONS

Model V2403-M-E3 V2403-M-T-E3

Type Vertical, water-cooled, 4-cycle diesel engine

ENGLISH

Number of cylinders 4

Bore and stroke
mm (in.)

Total displacement
L (cu.in.)

87 x 102.4

(3.43 x 4.04)

2.434

(148.53)

Combustion chamber Spherical Type (E-TVCS)

SAE NET Intermittent kW / rpm
H.P. (SAEJ1349) (HP / rpm)

SAE NET Continuous kW / rpm
H.P. (SAEJ1349) (HP / rpm)

33.9 / 2700

(45.4 / 2700)

29.4 / 2700

(39.4 / 2700)

41.2 / 2700

(55.2 / 2700)

35.8 / 2700

(47.9 / 2700)

Maximum bare speed rpm 2900 2950

Minimum bare idling speed
rpm

750 to 850 850 to 950

Order of firing 1-3-4-2

Direction of rotation Counter-clockwise (viewed from flywheel side)

Injection pump Bosch Type mini pump

Injection pressure 13.73 MPa, 1991 psi (140 kgf/cm )

Injection timing
(Be fore T.D .C.)

0.30 rad
(17.25 )

0.16 rad
(9.25 )

Compression ratio 23.2 22.5

Fuel Diesel Fuel No.2-D

Lubricant
(API classification)

Dimension mm (in .)
(length x width x height)

670.9 x 499.0 x 684.0
(26.4 x 19.8 x 26.9)

above CF

670.9 x 499.0 x 724.6
(26.4 x 19.8 x 28.5)

Dry weight (BB Spec.) kg (lbs.) 184.0 (405.7) 188.0 (414.5)

Starting system Cell starter (with glow plug)

Starting motor 12 V, 2.0 kW

Charging generator 12 V, 480 W

Recommended battery capacity 12 V, 100 to 120 AH

A Specifications are subject to change without notice.

Model D1703-M-E3BG V2003-M-E3BG

Type Vertical, water-cooled, 4-cycle diesel engine

Number of cylinders 3 4

Bore and stroke
mm (in.)

Total displacement
L (cu.in.)

87 x 92.4

(3.43 x 3.64)

1.647

(100.51)

83 x 92.4

(3.27 x 3.64)

1.999

(121.94)

Combustion chamber Spherical Type (E-TVCS)

SAE NET Continuous kW / rpm
H.P. (SAEJ1349) (HP / rpm)

SAE NET Standby kW / rpm
H.P. (SAEJ1349) (HP / rpm)

15.1 / 1800 (20.2 / 1800) 18.2 / 1800 (24.4 / 1800)

12.8 / 1500 (17.2 / 1500) 15.5 / 1500 (20.8 / 1500)

18.1 / 1800 (24.3 / 1800) 21.8 / 1800 (29.2 / 1800)

15.0 / 1500 (20.1 / 1500) 18.1 / 1500 (24.3 / 1500)

Maximum bare speed rpm 1800 / 1500

Order of firing 1-2-3 1-3-4-2

Direction of rotation Counter-clockwise (viewed from flywheel side)

Injection pump Bosch Type mini pump

Governor Electronic Governor

Injection pressure Mpa (kgf/cm , psi) 13.73 (140, 1991)

Injection timing (Before T.D.C.) 0.27 rad (15.25 )

Compression ratio 22.0 22.8

Fuel Diesel Fuel No.2-D (ASTM D975)

Lubricant (API classification) above CF

Dimension mm (in.)
(length x width x height)

608.4 x 490 x 642.8
(24.0 x 19.3 x 25.3)

700.6 x 490 x 633.3
(27.6 x 19.3 x 24.9)

Dry weight (BB Spec.) kg (lbs.) 164 (361.6) 195 (430.0)

Starting system Cell starter (with glow plug)

Starting motor 12 V, 1.4 kW

Charging generator 12 V, 480 W

Recommended battery capacity

12 V, 70 to 80 AH,

equivalent

12 V, 100 to 120 AH,

equivalent

31SPECIFICATIONS

ENGLISH

A Flywheel type is SAE clutch No. 7-1/2 or its equivalent.
A Flywheel housing type is SAE No. 4 or its equivalent.
A Continuous will operate at the stated rating continuously and have a 10% overload capability for one hour in 12 hours.
A Standby will operate at the stated full rating for one hour in 12 hours. No overload capacity is specified for this rating.
A Specifications are subject to change without notice.

32 SPECIFICATIONS

Model V2003-M-T-E3BG V2203-M-E3BG

Type Vertical, water-cooled, 4-cycle diesel engine

ENGLISH

Number of cylinders 4

Bore and stroke
mm (in.)

Total displacement
L (cu.in.)

83 x 92.4

(3.27 x 3.64)

1.999

(121.94)

87 x 92.4

(3.43 x 3.64)

2.197

(134.07)

Combustion chamber Spherical Type (E-TVCS)

SAE NET Continuous kW / rpm
H.P. (SAEJ1349) (HP / rpm)

SAE NET Standby kW / rpm
H.P. (SAEJ1349) (HP / rpm)

24.5 / 1800 (32.8 / 1800) 20.2 / 1800 (27.1 / 1800)

20.4 / 1500 (27.3 / 1500) 17.2 / 1500 (23.1 / 1500)

27.1 / 1800 (36.3 / 1800) 24.2 / 1800 (32.4 / 1800)

22.5 / 1500 (30.2 / 1500) 20.1 / 1500 (26.9 / 1500)

Maximum bare speed rpm 1800 / 1500

Order of firing 1-3-4-2

Direction of rotation Counter-clockwise (viewed from flywheel side)

Injection pump Bosch Type mini pump

Governor Electronic Governor

Injection pressure Mpa (kgf/cm , psi) 13.73 (140, 1991)

Injection timing (Before T.D.C.) 0.28 rad (16.25 ) 0.27 rad (15.25 )

Compression ratio 21.7 22.0

Fuel Diesel Fuel No.2-D (ASTM D975)

Lubricant (API classification) above CF

Dimension mm (in.)
(length x width x height)

700.6 x 490 x 674

(27.6 x 19.3 x 26.5)

700.6 x 490 x 633.3
(27.6 x 19.3 x 24.9)

Dry weight (BB Spec.) kg (lbs.) 208 (458.6) 195 (430.0)

Starting system Cell starter (with glow plug)

Starting motor 12 V, 1.4 kW

Charging generator 12 V, 480 W

Recommended battery capacity 12 V, 100 to 120 AH, equivalent

A Flywheel type is SAE clutch No. 7-1/2 or its equivalent.
A Flywheel housing type is SAE No. 4 or its equivalent.
A Continuous will operate at the stated rating continuously and have a 10% overload capability for one hour in 12 hours.
A Standby will operate at the stated full rating for one hour in 12 hours. No overload capacity is specified for this rating.
A Specifications are subject to change without notice.

Model V2403-M-E3BG

Type Vertical, water-cooled, 4-cycle diesel engine

Number of cylinders

Bore and stroke
mm (in.)

Total displacement
L (cu.in.)

4

87 x 102.4

(3.47 x 4.04)

2.434

(148.53)

Combustion chamber Spherical Type (E-TVCS)

SAE NET Continuous kW / rpm
H.P. (SAEJ1349) (HP / rpm)

SAE NET Standby kW / rpm
H.P. (SAEJ1349) (HP / rpm)

22.1 / 1800 (29.6 / 1800)

18.8 / 1500 (25.2 / 1500)

26.5 / 1800 (35.5 / 1800)

22.0 / 1500 (29.5 / 1500)

Maximum bare speed rpm 1800 / 1500

Order of firing 1-3-4-2

Direction of rotation Counter-clockwise (viewed from flywheel side)

Injection pump Bosch Type mini pump

Governor Electronic Governor

Injection pressure Mpa (kgf/cm , psi) 13.73 (140, 1991)

Injection timing (Before T.D.C.) 0.27 rad (15.25 )

Compression ratio 23.2

Fuel Diesel Fuel No.2-D (ASTM D975)

Lubricant (API classification) above CF

Dimension mm (in.)
(length x width x height)

700.6 x 490 x 684

(27.6 x 19.3 x 26.9)

Dry weight (BB Spec.) kg (lbs.) 199 (438.7)

Starting system Cell starter (with glow plug)

Starting motor 12 V, 2.0 kW

Charging generator 12 V, 480 W

Recommended battery capacity 12 V, 100 to 120 AH, equivalent

33SPECIFICATIONS

ENGLISH

A Flywheel type is SAE clutch No. 7-1/2 or its equivalent.
A Flywheel housing type is SAE No. 4 or its equivalent.
A Continuous will operate at the stated rating continuously and have a 10% overload capability for one hour in 12 hours.
A Standby will operate at the stated full rating for one hour in 12 hours. No overload capacity is specified for this rating.
A Specifications are subject to change without notice.

34 WIRING DIAGRAMS

WIRING DIAGRAMS

ENGLISH

35WIRING DIAGRAMS

ENGLISH