Kubota D1503-M-E User manual

CONTENTS
ENGLISH
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................................................................................................. 11
FUEL ...................................................................................................................... 11
Fuel level check and refueling ........................................................................................11
Air bleeding the fuel system............................................................................................12
Checking the fuel pipes .................................................................................................. 13
Cleaning the fuel filter pot...............................................................................................13
Fuel filter cartridge replacement ..................................................................................... 14
ENGINE OIL........................................................................................................... 14
Checking oil level and adding engine oil.........................................................................14
Changing engine oil........................................................................................................ 15
Replacing the oil filter cartridge ...................................................................................... 16
RADIATOR............................................................................................................. 17
Checking coolant level, adding coolant .......................................................................... 17
Changing coolant............................................................................................................ 18
Remedies for quick decrease of coolant.........................................................................18
Checking radiator hoses and clamp ............................................................................... 18
Precaution at overheating............................................................................................... 19
Cleaning radiator core(outside) ...................................................................................... 19
Anti-freeze ...................................................................................................................... 19
Radiator cement ............................................................................................................. 20
AIR CLEANER ....................................................................................................... 20
Evacuator valve .............................................................................................................. 21
Dust indicator (optional)..................................................................................................21
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CONTENTS
ENGLISH
For the air cleaner with a dust cup (optional)..................................................................21
BATTERY............................................................................................................... 22
Battery charging.............................................................................................................. 22
Direction for long term storage .......................................................................................23
ELECTRIC WIRING ............................................................................................... 23
FAN BELT .............................................................................................................. 23
Adjusting Fan Belt Tension.............................................................................................23
CARRIAGE AND STORAGE..................................................................................... 24
CARRIAGE ............................................................................................................ 24
STORAGE.............................................................................................................. 24
TROUBLESHOOTING............................................................................................... 25
SPECIFICATIONS..................................................................................................... 27
WIRING DIAGRAMS ................................................................................................. 28
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ENGLISH
You are now the proud owner of a KUBOTA Engine. This engine is a
product of KUBOTA quality engineering and manufacturing. It is made
of fine materials and under a rigid quality control system. It will give
you long, satisfactory service. To obtain the best use of your engine,
please read this manual carefully. It will help you become familiar with
the operation of the engine and contains many helpful hints about
engine maintenance. It is KUBOTA's policy to utilize as quickly as
possible every advance in our research. The immediate use of new
techniques in the manufacture of products may cause some small
parts of this manual to be outdated. KUBOTA distributors and dealers
will have the most up-to-date information. Please do not hesitate to
consult with them.
FOREWORD
3DANGER : Indicates an imminently hazardous situation which,
if not avoided, will result in death or serious
injury.
3WARNING : Indicates a potentially hazardous situation which,
if not avoided, COULD result in death or serious
injury.
3CAUTION: Indicates a potentially hazardous situation which,
if not avoided, MAY result in minor or moderate
injury.
IMPORTANT : Indicates that equipment or property damage
could result if instructions are not followed.
NOTE : Gives helpful information.
This symbol, the industry's "Safety Alert Symbol", is used throughout
this manual and on labels on the machine itself to warn of the
possibility of personal injury. Read these instructions carefully. It is
essential that you read the instructions and safety regulations before
you attempt to assemble or use this unit.
3 SAFETY FIRST

ENGLISH

1SAFE OPERATION
ENGLISH
SAFE OPERATION
Careful operation is your best insurance against an accident. Read and understand this section carefully before
operating the engine. All operators, no matter how much experience they may have had, should read this and
other related manuals before operating the engine or any equipment attached to it. It is the owner's obligation to
instruct all operators in safe operation.
Be sure to observe the following for safe operation.
1.OBSERVE SAFETY INSTRUCTIONS
ARead and understand carefully this "OPERATOR'S MANUAL" and
"LABELS ON THE ENGINE" before attempting to start and operate the
engine.
ALearn how to operate and work safely. Know your equipments and its
limitations. Always keep the engine in good condition.
ABefore allowing other people to use your engine, explain how to operate
and have them read this manual before operation.
ADO NOT modify the engine by yourself. UNAUTHORIZED
MODIFICATIONS to the engine may impair the function and/or safety
and affect engine life.
2. WEAR SAFETY CLOTHING
ADO NOT wear loose, torn or bulky clothing around the machine that may
catch on working controls and projections causing personal injury.
AUse additional safety items, e.g. hard hat, safety protection, gloves, etc.,
as appropriate or required.
ADO NOT operate machine or any equipment attached to it while under
alcohol, medication, or other drugs, or while fatigued.
ADO NOT wear radio or music headphones while operating engine.
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SAFE OPERATION2
ENGLISH
3. CHECK BEFORE OPERATION & STARTING THE ENGINE
ABe sure to check the engine before operation. If something is wrong with
the engine, do not fail to repair it quickly.
AKeep all guards and shields in place before operating the engine.
Replace any that are damaged or missing.
ACheck to see if there is a safe distance from the engine before starting.
AAlways keep the engine at least 3 feet (1 meter) away from buildings and
other facilities.
ADO NOT allow children or livestock to approach the machine while the
engine is running.
ADO NOT start the engine by shorting across starter terminals. The
machine may start in gear and move.
4. KEEP AROUND THE ENGINE CLEAN
ABe sure to stop the engine before cleaning.
AKeep the engine clean and free of accumulated dirt, grease and trash to
avoid a fire. Store flammable fluids away from sparks and fire.
ADO NOT stop the engine without idling; Temperatures around the
engine rise suddenly. Keep the engine idling for over about 5 minutes
before stopping.
5. SAFE HANDLING OF FUEL AND LUBRICANTS -KEEP OFF FIRE-
AAlways stop the engine before refueling or/and lubricating.
ADO NOT smoke or allow flames or sparks in your working area. Fuel is
extremely flammable and explosive under certain conditions.
ARefuel at a well ventilated and open place. When fuel and lubricants are
spilled, refuel after letting engine cool off.
ADO NOT mix gasoline or alcohol with diesel fuel. The mixture can cause
a fire.
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3SAFE OPERATION
ENGLISH
6. EXHAUST GASES & FIRE PREVENTION
AEngine exhaust fumes can be very harmful if allowed to accumulate. Be
sure to run the engine in a well ventilated place and where there are no
people or livestock near the engine.
AThe exhaust gas from the muffler is very hot. To prevent a fire, do not
expose dry grass, mowed grass, oil and any other combustible materials
to exhaust gas. Also, keep the engine and muffler clean all the time.
ATo avoid a fire, be alert for leaks of flammables from hoses and lines. Be
sure to check for leaks from hoses or pipes, such as fuel and hydraulic
by following the maintenance check list.
ATo 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
power connections clean. Bare wire or frayed insulation can cause a
dangerous electrical shock and personal injury.
7. ESCAPING FLUID
ARelieve all pressure in the air, the oil and the cooling systems before any
lines, fittings or related items are removed or disconnected.
ABe alert for possible pressure when disconnecting any device from a
system that utilizes pressure. DO NOT check for pressure leaks with
your hand. High pressure oil or fuel can cause personal injury.
AEscaping hydraulic fluid under pressure has sufficient force to penetrate
skin causing serious personal injury.
AFluid 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.
AIf injured by escaping fluid, see a medical doctor immediately. This fluid
can produce gangrene or severe allergic reaction.
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SAFE OPERATION4
ENGLISH
8. CAUTIONS AGAINST BURNS & BATTERY EXPLOSION
ATo avoid burns, be alert for hot components, e.g. muffler, muffler cover,
radiator, pipings, engine body, coolants, engine oil, etc. during operation
and just after the engine has been shut off.
ADO NOT remove the radiator cap while the engine is running or
immediately after stopping. Otherwise hot water will spout out from
radiator. Wait for more than ten minutes to cool the radiator, before
removing the cap.
AMake sure to shut the drain valve of coolant and oil to close pressure
cap, to fasten pipe band before operating. If those parts are taken off, or
loosen, it will result in serious personal injury.
AThe battery presents an explosive hazard. When the battery is being
activated, hydrogen and oxygen gases are extremely explosive.
ADO NOT use or charge the battery if its fluid level stands 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 levels.
AKeep sparks and open flames away from the battery, especially when
charging the battery. DO NOT strike a match near the battery.
ADO NOT check battery charge by placing a metal object across the
terminals. Use a voltmeter or hydrometer.
ADO NOT charge battery if frozen. It can be explosive. When frozen,
warm the battery up more than 16 C (61 F).
9. HANDS AND BODY AWAY FROM THE ROTATING PARTS
ABe sure to stop the engine before checking or adjusting belt tension and
cooling fan.
AKeep your hands and body away from the rotating parts, such as cooling
fan, V-belt, fan drive V-belt, pulley or flywheel causing personal injury.
ADO NOT run the engine with installed safety guards detached. Install
safety guards securely during operation.
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5SAFE OPERATION
ENGLISH
10. ANTI-FREEZE & DISPOSAL OF FLUIDS
AAnti-freeze contains poison. Wear rubber gloves to avoid personal
injury. In case of contact with skin, wash it off immediately.
ADO NOT mix different types of Anti-freeze. The mixture can produce
chemical reaction causing harmful substances. Use approved or
genuine KUBOTA Anti-freeze.
ABe mindful of the environment and the ecology. Before draining any
fluids, find out the correct way of disposing of them. Observe the
relevant environmental protection regulations when disposing of oil, fuel,
coolant, brake fluid, filters and batteries.
AWhen draining fluids from the engine, place some container underneath
the engine body.
ADO NOT pour waste onto the grounds, down a drain, or into any water
source.
11. CONDUCTING SAFETY CHECKS & MAINTENANCE
AWhen checking engine or servicing, place the engine on a wide and level
ground. DO NOT work on anything that is supported ONLY by lift jacks
or a hoist. Always use blocks or correct stands to support the engine
before servicing.
ADetach the battery from the engine before conducting service. Put a "DO
NOT OPERATE!" tag in the key switch to avoid accidental starting.
ATo avoid sparks from an accidental short circuit always disconnect the
battery's ground cable (-) first and connect it last.
ABe sure to stop the engine and remove the key when conducting daily
and periodic maintenance, servicing and cleaning.
ACheck or conduct maintenance after the engine, coolant, muffler, or
muffler cover have been cooled off completely.
AAlways use the appropriate tools and jig-fixture in good condition when
performing any service work. Make sure you understand how to use
them before service.
AUse 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 V-belt. This practise can cause serious personal injury
or premature machine damage to the cooling fan.
AReplace 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 are aged gradually.
AWhen servicing is performed together by two or more persons, take care
to perform all work safely.
AKeep first aid kit and fire extinguisher handy at all times.
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SAFE OPERATION6
ENGLISH
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 new part, make sure new label(s) is (are)
attached in the same location(s) as the replaced component.
5. Mount new warning and caution labels by applying on a clean dry surface and pressing any bubbles to outside edge.
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
Stay clear of engine
fan and fan belt
13. CARE OF WARNING AND CAUTION LABELS
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1SERVICING OF THE ENGINE
ENGLISH
SERVICING 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)
(1) Engine serial number
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2 NAMES OF PARTS
ENGLISH
NAMES OF PARTS
(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
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3PRE-OPERATION CHECK
ENGLISH
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:
ABe sure to install shields and safeguards attached to the engine when operating.
AStop the engine at a flat and wide space when checking.
AKeep 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 14 to 20
(2) Engine oil level and contamination 14,15
(3) Amount of fuel 11
(4) Amount of coolant 17 to 20
(5) Dust in air cleaner dust cup 20,21
(6) Damaged parts and loosened bolts and nuts -
3. By inserting the key into the starter
switch
(1) Proper functions of meters and pilot lamps; no stains on
these parts -
(2) Proper function of glow lamp timer -
4. By starting the engine (1) Color of exhaust fumes 7
(2) Unusual engine noise 7
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4 OPERATING THE ENGINE
ENGLISH
OPERATING THE ENGINE
STARTING THE ENGINE(NORMAL)
To avoid personal injury:
ADo not allow children to approach the machine
while the engine is running.
ABe sure to install the machine on which the
engine is installed, on a flat place.
ADo not run the engine on gradients.
ADo not run the engine in an enclosed area.
Exhaust gas can cause air pollution and
exhaust gas poisoning.
AKeep your hands away from rotating parts
(such as fan, pulley, belt, flywheel etc.) during
operation.
ADo not operate the machine while under the
influence of alcohol or drugs.
ADo 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.
ADo not wear radio or music headphones while
operating engine.
ACheck to see if it is safe around the engine
before starting.
AReinstall safeguards and shields securely and
clear all maintenance tools when starting the
engine after maintenance.
ADo not use ether or any starting fluid for starting the
engine, or a severe damage will occur.
AWhen 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"
(B) "OFF"
2. Place the engine stop lever to the
"STARTING" position.
3. Place the speed control lever at more
than half "OPERATION".
(1) Engine stop lever
(2) Speed Control lever
(A) "STOP"
(B) "START"
(C) "IDLING"
(D) "OPERATION"
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5OPERATING THE ENGINE
ENGLISH
(with lamp timer in use)
AThe 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 pre-
heated by turning the starter switch to the
"PREHEATING" position.
AIf 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.
AIf the glow lamp should redden too quickly or too
slowly, immediately ask your KUBOTA dealer to check
and repair it.
AIf 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.
AShown below are the standard preheating times for
various temperatures. This operation, however, is not
required, when the engine is warmed up.
ADo not allow the starter motor to run continuously for
more than 20 seconds.
ABe 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.
AWhen 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.
4. Insert the key into the key switch and
turn it to the "OPERATION" position.
(A) "OFF" SWITCHED OFF
(B) "ON" OPERATION
(C) "PREHEATING"
(D) "START"
(A) "PREHEATING"
(B) "OFF" SWITCHED OFF
(C) "ON" OPERATION
(D) "START"
5. Turn the starter switch to the
"PREHEATING" position to allow the
glow lamp to redden.
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)
8. Warm up the engine at medium speed
without load.
5. Turn the key to the "PREHEATING"
position and keep it there for a certain
period mentioned below.
Ambient temperature Preheating time
Above 10 C (50 F) NO NEED
10 C (50 F) to -5 C (23 F) Approx. 5 seconds
*Below -5 C (23 F) Approx. 10 seconds
Limit of continuous use 20 seconds
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).)
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OPERATING THE ENGINE6
ENGLISH
STOPPING THE ENGINE
AIf 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.
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:
ADo 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.
When the engine overheats and hot coolant overflows
through the radiator and hoses, stop the engine
immediately and make the following checks to determine
the cause of trouble:
Check item
1. Check to see 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;
5. Check to see if radiator water pipe is clogged; and
6. Check to see if anti-freeze is mixed to a 50/50% mix of
water and anti-freeze.
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 Maintenance
Section).
2. Lubricant system (See "ENGINE OIL" in Maintenance
Section).
1. Return the speed control lever to low
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 "STARTING" position to be
ready for the next start.)
(1) Engine stop lever
(2) Speed control lever
(A) "STOP"
(B) "START"
(C) "IDLING"
(D) "OPERATION"
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7OPERATING THE ENGINE
ENGLISH
BFuel
To avoid personal injury:
AFluid 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.
ACheck 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 Maintenance Section).
BColor of exhaust
While the engine is run within the rated output range:
AThe color of exhaust remains colorless.
AIf the output slightly exceeds the rated level, exhaust
may become a little colored with the output level kept
constant.
AIf the engine is run continuously with dark exhaust
emission, it may lead to trouble with the engine.
BImmediately stop the engine if;
AThe engine suddenly slow down or accelerates.
AUnusual noises suddenly appear.
AExhaust fumes suddenly become very dark.
AThe oil pressure lamp or the water temperature alarm
lamp lights up.
REVERSED ENGINE REVOLUTION AND
REMEDIES
To avoid personal injury:
AReversed engine operation can make the
machine reverse and run it backwards. It may
lead to serious trouble.
AReversed 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 replace parts as
needed.
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8 MAINTENANCE
ENGLISH
MAINTENANCE
To avoid personal injury:
ABe sure to conduct daily checks, periodic
maintenance, refueling or cleaning on a level
surface with the engine shut off and remove the
key.
ABefore allowing other people to use your
engine, explain how to operate,and have them
read this manual before operation.
AWhen cleaning any parts, do not use gasoline
but use regular cleanser.
AAlways use proper tools, that are in good
condition. Make sure you understand how to
use them, before performing any service work.
AWhen installing, be sure to tighten all bolts lest
they should be loose. Tighten the bolts by the
specified torque.
ADo 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.
ADo not touch muffler or exhaust pipes while
they are hot; Severe burns could result.
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9MAINTENANCE
ENGLISH
SERVICE INTERVALS
Observe the following for service and maintenance.
The lubricating oil change intervals listed in the table below are for Classes CF, CE and CD lubricating oils of API classifi-
cation with a low-sulfur fuel in use. If the CF-4 or CG-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.
AThe 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.
*3 Consult your local KUBOTA Dealer for this service.
*4 Replace only if necessary.
AWhen the battery is used for less than 100 hours in a year,check its electrolyte yearly. (for refillable battery's only)
AThe 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.
Interval Item Ref.page
Every 50 hours Check of fuel pipes and clamp bands 13 @
See NOTE Change of engine oil (depending on the oil pan) 14 to 16
Every 100 hours
Cleaning of air cleaner element 20,21 *1 @
Cleaning of fuel filter 13
Check of battery electrolyte level 22,23
Check of fan belt tightness 23
Every 200 hours
Check of radiator hoses and clamp bands 18
Replacement of oil filter cartridge, using standard oil pan 16
Check of intake air line - @
Every 400 hours Replacement of oil filter cartrige, using standard oil pan 16
Replacement of fuel filter cartrige 14 @
Every 500 hours
Removal of sediment in fuel tank -
Cleaning of water jacket (radiator interior) 17 to 20
Replacement of fan belt 23
Every one or two months Recharging of battery 22,23
Every year Replacement of air cleaner element 20,21 *2 @
Every 800 hours Check of valve clearance 25
Every 1500 hours Check of fuel injection nozzle injection pressure - *3 @
Every 3000 hours Check of turbo charger - *3 @
Check of injection pump - *3 @
Every two years
Change of radiator coolant (L.L.C.) 17 to 20
Replacement of battery 22,23
Replacement of radiator hoses and clamp bands 18
Replacement of fuel pipes and clamp bands 13 *3 @
Replacement of intake air line - *4 @
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