Kubota KX 016-4, KX 018-4 Operator's Manual

1BAAACDAP2310

Abbreviations Definitions

API
ASTM
CECE

DIN

EN

OPG

FRONT

Hi

ISO

JIS

L

L/min

Lo
MIL
rpm

ROPS

SAE

TPSS

AI

American Petroleum Institute
American Society for Testing and Materials, USA
Committee for European Construction Equipment
German Institute for Standards, Federal Republic of Germany
European Standard
Operator Protective Guards
"Front" means the front view towards the boom and dozer
High speed
International Standardization Organization
Japanese Industrial Standard
Volume (Liter)
Liter per minute
Low speed
Military Standards
Revolutions per minute
Roll-Over Protective Structures
Society of Automotive Engineers, USA
Two Pattern Selection System
Auto Idle

ABBREVIATION LIST

Safety alert Symbol

Warning lamp “Fuel level too low”

System lamp

Warning lamp “Engine Oil pressure “

Warning lamp “Battery char ge”

Warning lamp “Auto Idle (AI) Lamp”

Indicator lamp “Glow”

Working light switch

Horn

Wiper/Washer switch

Diesel

Hydraulic fluid

Gear oil

Grease

Fast

Slow

Excavator - Overhead movement toward the front

Excavator - Overhead movement toward the rear

Boom raise

Boom lower

Arm out

Arm in

Bucket crowd

Bucket dump

Boom swing (Left)

Boom swing (Right)

Dozer raise

Dozer lower

Operation direction of control lever

Operation direction of control lever

Read operator’s manual

Lock

Unlock

Engine stop control lamp

Reducing / Increasing track width

Rotary beacon indicator on/off

Display selector switch

User setting switch

AUX proportional switch

Working light switch

Key in

Key out

AUX

Maintenance

Clock warning

GENERAL SYMBOLS

The instruments and operation elements have been marked with a series of symbols in order to simplify the opera­tion of your excavator. These symbols are listed below with the respective descriptions.

FOREWORD

You are now the proud owner of a KUBOTA excavator. This excavator is a
product of KUBOTA quality engineering and manufacturing. It is made of the
fine materials and under rigid quality control systems. It will give you long,
satisfactory service. To obtain the best use of your excavator, please read
this manual carefully. It will help you become familiar with the operation of
the excavator and contains many helpful hints about excavator
maintenance. It is KUBOTA's policy to utilize as quick 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.

Please note that there may be some differences between your actual
machine and the illustrations in the instructions.

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.

DANGER :

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

W ARNING :

Indicates a potentially hazardous situation which,
if not avoided, could result in death or serious
injury.

CAUTION :

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.

SAFETY FIRST

CONTENTS

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

DANGER, WARNING AND CAUTION LABELS...................................................... 8

CARE OF DANGER, WARNING AND CAUTION LABELS...................................13

DEALER SERVICE......................................................................................................1

TECHNICAL DATA......................................................................................................2

DESCRIPTION OF MACHINE PARTS........................................................................3

INSTRUMENT PANEL AND CONTROL ELEMENTS................................................. 4

CHECKS BEFORE START......................................................................................... 7

DAILY CHECKS.......................................................................................................7

Working Light Switch ........................................................................................................7

OPERATION OF THE ENGINE...................................................................................8

STARTING THE ENGINE........................................................................................8

Display Selec to r S w it c h ............ .. .. ................ ............... ................ ............... ................ ......9

Battery Char g e Lam p........................... ............... ... ............... ................ ............... ...........11

Engine Oil Pres s u re Warn ing Lamp ...... .. ................ ............... ................ ............... .........11

Glow Lamp......................................................................................................................11

LCD Display for Normal Operation .................................................................................12

LCD Display for Warning ................................................................................................13

Warning Lamp ................................................................................................................13

Checkpoin ts af te r S ta rting the Engi n e ........................... ................ ............... ................ ..14

STARTING THE ENGINE UNDER COLD CONDITIONS......................................14

Precaution s in ca s e of Ov e r h eat............ ................ ............... ................ ............... ...........14

STOPPING THE ENGINE...................................................... ..... .... .......................14

Engine Stop Knob...........................................................................................................15

STARTING WITH AN AUXILIARY BATTERY .......................................................15

Observe Foll o win g G u id elin e s w h en S ta r tin g wi t h an Au x il ia ry B a tte r y........... .. .............15

EXCAVATOR OPERATION......................................................................................16

RUNNING-IN OF THE NEW EXCAVATOR...........................................................16

Do not Work with Full Engine Rpm's or Full Loads during the First 50 Working Hours..16

Oil Change in the Run-in Stage......................................................................................16

STARTING............................................................................................................. 16

Seat Belt.. ............... ................ ............... ................ ............... ................ ............... ...........16

Operator's Seat...............................................................................................................16

Lock Lever (Unload Lever)......................................................... ...................... .. ............18

Working Light Switch ......................................................................................................18

Beacon Light Sw itch..................... ................ ............... ................ ............... ................ ....18

OPERATION OF TRACK WIDTH CHANGE..........................................................19

OPERATION OF THE DOZER..............................................................................19

Adjustment of the Dozer Width.......................................................................................20

DRIVING................................................................................................................20

Drive Levers(Right,Left)..................................................................................................22

Travel Speed Switch.......................................................................................................22

TURNS................................................................................................................... 23

CONTENTS

Pivot Turn .......................................................................................................................23

Spin Turn ............................. ................ ............... ................ ............... ................ .............24

UP AND DOWNHILL DRIVING.............................................................................. 25

TWO PATTERN SELECTION SYSTEM(TPSS)....................................................26

Pattern Change......... ... ............... ................ ............... ............... ................ ............... .......26

OPERATION OF THE BOOM................................................................................27

OPERATION OF THE ARM...................................................................................27

OPERATION OF THE BUCKET............................................................................28

SWIVEL(UNIT SWING)OPERATION....................................................................28

BOOM SWING OPERATION.................................................................................29

AUXILIARY PORT OPERATION...........................................................................29

PARKING ON A SLOPE........................................................................................30

IMPORTANT INFORMATION ON EXCAVATOR OPERATION............................ 30

TRANSPORTING THE EXCAVATOR ON A VEHICLE.............................................31

LIFTING OF THE EXCAVATOR................................................................................33

MAINTENANCE.........................................................................................................35

MAINTENANCE INTERVALS................................................................................36

OPENING AND CLOSING OF PARTS..................................................................38

Opening and Closing of the Fuel Tank Cap.......... ...................... .. ...................... ............38

Opening/Closing of the Engine Hood.................................... ...................... .. .................39

Where to store th e Gre a s e G un ............... ................ ............... ................ ............... .........39

Where to keep Operator's Manual..................................................................................39

Cup Holder......................................................................................................................39

DAILY CHECKS.....................................................................................................40

Checking Coolant Level..................................................................................................40

Checking Fuel Level .......................................................................................................40

Checking Eng in e Oil L e ve l ............... ............... ............... ................ ............... ................ ..41

Checking Hydraulic Oil Level..........................................................................................42

Lubrication Points........................................................... ................ ................ ................43

Check Fan Belt ......................... ............... ................ ............... ................ ............... .........44

Checking Rad ia t o r an d O il Co ol er ........... ................ ............... ................ ............... .........44

Checking and Cleaning Engine and Electrical Wiring........ ...................... ...................... .44

Washing Whole M a c hi n e........ .. .. ................ ............... ............... ................ ............... .......44

REGULAR CHECKS AND MAINTENANCE WORK .................................................45

EVERY 50 SERVICE HOURS...............................................................................45

Draining Fuel Tank .........................................................................................................45

Checking Water Separator .............................................................................................45

Battery ............................................................................................................................46

Battery Char g in g.............. ................ ............... ............... ... ............... ................ ...............46

Greasing Swin g B e a ring T ee t h. .. .. ................ ............... ................ ............... ................ ....47

EVERY 200 SERVICE HOURS.............................................................................47

Checking Radiator Hoses and Clamps.......................................................... .................47

Inspection and Cleaning Air Filter Element.....................................................................47

Air Filter Maintenance............................................... ................. ................ ................ .....47

Greasing Swin g B a ll Be a rin g...... .. ................ ............... ................ ............... ................ ....48

Checking Fuel Line and Intake Air Line...................... .. ...................... ...................... ......48

EVERY 250 SERVICE HOURS.............................................................................48

Changing Engine Oil(First Engine Oil Change after 50 Service Hours) ............... ..........48

Replacing Engine Oil Filter(First Engine Oil Fil ter Change after 50 Service Hours).......49

CONTENTS

Checking the Fan Belt Tension.......................................................................................49

EVERY 500 SERVICE HOURS.............................................................................50

Drive unit Oil Change(First Oil Change of the 50 hours)...................................... .. ........50

Replacing Fuel Filter Element.........................................................................................50

Replacing Hydraulic Return Filter Element(first replacement after 250 service hours)..51

EVERY 1000 SERVICE HOURS...........................................................................51

Hydraulic Oil Check for Machines with Hydraulic Breakers............................................51

Hydraulic Oil Change(Including Repla cing Suction Filter in Hydraulic Tank).................52

EVERY 1000 SERVICE HOURS OR ONCE A YEAR...........................................53

Replacing Air F ilter Element ................ ............... ................ ............... ................ .............53

EVERY 1500 SERVICE HOURS...........................................................................53

Checking Fuel Injection Nozzle(Injection Pressure).......................................................53

EVERY 2000 SERVICE HOURS...........................................................................53

Changing Front Idler and Track Roller Oil.......................................................... ............53

Checking Alternator and Starter Motor............ ...................... .. ...................... .................53

EVERY 3000 SERVICE HOURS...........................................................................53

Checking Injection Pump................................................................................................53

ANNUAL SERVICE................................................................................................53

Electrical Wirin g a nd Fu se s .......... ... .. ............... ................ ............... ................ ...............53

BIENNIAL SERVICING..........................................................................................54

Replacing of Ra d i ator Hoses.......................... ............... ................ ............... ................ ..54

Changing Radiator Coolant.................................... ...................... ...................... .. ..........54

Replacing Fue l Hose ........... ................ ............... ................ ............... ................ .............55

Replacing Inta k e Ai r lin e...... ... ............... ................ ............... ................ ............... ...........55

OTHER ADJUSTMENTS AND REPLACEMENTS....................................................56

PURGING FUEL SYSTEM .................................................................................... 56

ADJUSTMENT OF TRACKS .................................................................................56

Rubber Tracks................................................................................................................56

Special Information when Using Rubber Tracks.............................................................57

CHANGING THE BUCKET............................................... ..... ..... .... .......................58

FUSES...................................................................................................................58

Replacing Fus e s..... ................ ............... ................ ............... ................ ............... ...........58

Fuse Capacities and Circuits......................... .. ...................... ...................... .. .................58

Auxiliary Electric .............................................................................................................59

Slow Blow Fuse ............. ............... ................ ............... ................ ............... ................ ....59

TROUBLESHOOTING...............................................................................................60

KUBOTA I.C.S. NAVIGATION LIST OF MESSAGES ...........................................62

OPERATION UNDER COLD WEATHER CONDITIONS.......................................... 67

PREPARATION FOR OPERATION IN COLD WEATHER....................................67

PROCEDURE AFTER DONE WORK............................... ..... ................................67

LONG STORAGE......................................................................................................68

RECOMMENDED OILS.............................................................................................70

APPENDICES............................................................................................................71

MAIN DIMENSIONS ..............................................................................................71

LIFTING CAPACITY..................................................................................................72

SAFE OPERATION

1SAFE OPERATION

Careful operation is your best insurance against an
accident.

Read and understand this manual carefully, before
operating the excavator.

Every user, however experienced, should carefully read
and understand this manual and those of the attachments
and accessories before operating the excavator. The
owner is obliged to inform all operators of these
instructions in detail.
Keep this manual in the storage location. (See "Where to
keep Operator's Manual" in "MAINTENANCE" section.)

1. BEFORE OPERATION

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

2. Obey the danger, warning and caution labels on the
machine.

3. Track can be set at the narrow width (990 mm) or the
standard width (KX016-4 : 1240 mm, KX018-4 : 1300
mm).
(for details see "OPERATION OF TRACK WIDTH
CHANGES")
To change the track width, set the track width fully,
standard or narrow width.
If not, the excavator may unintentionally move.

4. For your safety, a ROPS/OPG (Roll-Over Protective
Structure, Operator Protective Guards(top guard).)
with a seat belt is installed by KUBOTA. Always use
the seat belt when the machine is equipped with a
ROPS/OPG as this combination will reduce the risk of
serious injury or death, should the excavator be upset
or falling objects occur.
Do not modify any structural members of the ROPS/
OPG by welding, drilling, bending, grinding or cutting,
as this may weaken the structure. If any component is
damaged, replace it. Do not attempt repairs. If the
ROPS/OPG is loosened or removed for any reason,
make sure all parts are reinstalled correctly. Tighten
mounting bolts to proper torque.

5. ROPS/OPG structure complies with ISO 3471, ISO
3449 and OSHA regulations.

6. The seat belt must be inspected regularly and
replaced if frayed or damaged.

(1) Seat belt

7. Always sit in the operator's seat when starting engine
or operating levers or controls.

SAFE OPERATION2

8. Study control lever pattern A and pattern B. Then
choose the one which is most familiar.
Familiarize yourself with the pattern selected by
operating the unit slowly and at low engine speed.

A Before changing the pattern, be sure to stop the

engine.

A Engage the lock to prevent accidental pattern change.

(1) Pattern selector lever
(Two Pattern Selection System:TPSS)

(A) "Pattern A"
(B) "Pattern B"
(C) Pull to unlock

A Do not allow any persons within the working range of

the excavator during operation.

A Check local regulations before digging and call

diggers hotline before working,
www.diggershotline.com or 811 (WI) and www.ne­diggers.com or 1-800-331-5666 (NE).

11. Do not allow anyone to use the excavator until they
have been advised of the work to be performed and
they have indicated that they have read and
understood the operator's manual.

9. Do not operate the excavator while under the influence
of alcohol, medication, controlled substances or while
fatigued.

10.Check the surroundings carefully before using the
excavator or when attachments are being attached.

A Pay attention to the overhead clearance with electric

wires.

A Check for pipes and buried cables before digging.
A Check for hidden holes, obstacles, soft underground,

and overhangs.

12. Do not wear baggy, torn or oversized clothing when
working with the excavator as such clothing can get
caught in rotating parts or control elements which can
cause accidents or injuries. Wear adequate safety
clothing, e.g. safety helmet, safety shoes, eye
protection, ear protection, working gloves, etc., as
necessary and as prescribed by law or statutes.

3SAFE OPERATION

2. OPERATING THE EXCAVATOR

1. Mount and dismount of the machine safely. Always
face the machine. Always use handrails and available
steps and keep yourself well balanced. Do not grab or
hold any of the control levers and switches. Do not
jump on or off the machine, whether stationary or in
motion.

2. Start and control the excavator only from the
operator's seat. The driver should not lean out of his
seat when the engine is running.

3. Before starting the engine, make sure that the lock
levers are in the "Lock" position and all control levers
and pedals are in their neutral positions and the seat
belt is fastened correctly.

4. Before operating the excavator, make sure that the
dozer blade is in front of you. If the levers are activated
with the dozer blade at the rear, the tracks will move in
the opposite direction of the drive levers.

(1) Helmet
(2) Clothing fit for work
(3) Tight seams
(4) Good grip footwear
(5) Well fitting cuffs
(6) Working gloves

(7) Straw ha t
(8) Towel
(9) Baggy trousers
(10) Loose cuffs of the shi rt
(11) Baggy shirt
(12) Rubber sandals

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

14.Check levers, pedals and all mechanical parts for
correct adjustment and wear. Replace worn or
damaged parts immediately. Check nuts and bolts
regularly for correct torque.

15.Keep your excavator clean. Heavy soiling, grease,
dust and grass can cause fires, accidents or injuries.

16.Use only KUBOTA authorized attachments.

17.Before starting the excavator, be confirm that the
excavator has been filled with fuel, lubricated, greased
and undergone any required maintenance work.

18.Do not modify the excavator; modifications could lead
to unforeseen safety problems.

19.Make sure attachments, particularly those utilizing
quick attach systems, are securely mounted.

20.Install protective guards on the excavator when
working in areas where objects may fall or be thrown.

5. Do not operate or idle engine in a non-ventilated area.
Carbon monoxide gas is colorless, odorless, and
deadly.

6. Keep all safety equipment and covers in place.
Replace damaged or missing safety devices.

SAFE OPERATION4

7. When operating, keep hands and body inside of the
ROPS / OPG protective envelope.
Do not touch or depress the control levers or the
pedals from outside the cab while the engine is
running.

8. Take precautions against tipping over. Stay away from
steep slopes and embankments. Do not swing the
bucket downhill. Lower the dozer blade when digging.
Keep the bucket as low as possible while driving uphill.
Turn slowly on slopes (at reduced speed). Do not
place the excavator near the edges of trenches and
banks, as the earth can give away due to the weight of
the excavator.
ALLOWABLE CLIMBING ANGLE : 36 % (20 deg.)
ALLOWABLE ANGLE CROSS : 27 % (15 deg.)

9. Watch where you are going at all times.
Watch for and avoid obstacles. Remain alert for trees,
wires and other obstructions.

C Safety for children

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

3. AFTER OPERATION

Before leaving the machine,
A Park the excavator on a firm, flat and level surface. If

this is not possible, park across the slope.

A Lower the attachments and the dozer blade to the

ground.

A Stop the engine.
A Release pressure in the hydraulic system.
A Lock all control levers.
A Remove the key.
A Lock the cab door (if equipped)

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

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

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

4. Never carry children on your machine. There is not a
safe place for them to ride. They may fall off and be run
over or interfere with your control of the machine.

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

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

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

8. When parking your machine, if at all possible, park on
a firm, flat and level surface; if not, park across a slope.
Lower the bucket and dozer to the ground, stop the
engine, release pressure in the hydraulic system,
place the pilot control lock lever in the locked position,
remove the key and lock the cab door (if equipped),
before you leave.

(1) Pilot control lock l ever (A) "Unlock"

(B) "Locke d "

4. SAFE LOADING AND TRANSPORT OF
THE EXCAVATOR

1. Observe all regulations concerning the transport of
excavators on public roads.

2. Use adequately long and robust ramps when loading
on the machine. (for details see "TRANSPORTING
THE EXCAVATOR ON A VEHICLE")

3. Do not change the running direction and to avoid
tipping over, do not try to swing the attachment
crosswise to the loading ramps.

4. Lower the attachment onto the transport surface and
release the pressure from the hydraulic system.
Stop the engine then remove the key.
After loading the excavator on a truck, block the tracks
with blocks and tie down the excavator with the chain.
After loading of the excavator on a truck, engage the
swing lock pin.

(1) Swing lock pin (A) "Unlock"

(B) "Lock"

6. When towing the excavator or pulling a load, the load
must be less than the strength of the towing line
attached to excavator. The towing eye should not be
used for tie down or lifting of the machine.

Max. drawbar pull at
coupling hook

Max. vertical load at
coupling hook

32.3 kN (7261 lbf, 3294 kgf)

2.7 kN (607 lbf, 275 kgf)

5. MAINTENANCE

Before doing maintenance work on the excavator, place
the machine on a firm, flat and level surface, lower the
attachments to the ground, stop the engine, release
pressure trapped in the hydraulic system, lock all control
levers and remove the key. When dismantling hydraulic
parts, make sure that the hydraulic oil has cooled down
sufficiently to avoid burns.
Start maintenance work carefully, e.g. loosen plug slowly
so that oil will not squirt out.

1. Before doing work on the engine, the exhaust system,
the radiator and the hydraulics, let the excavator cool
down sufficiently.

2. Always turn off the engine when filling the fuel tank.
Avoid spilling and over-filling of fuel.

3. Smoking is prohibited while refueling or handling the
battery. Keep sparks and fire away from the fuel tank
and battery. Flammable gases escape from the
battery, especially during charging.

4. Do not use or charge a refillable type battery if the fluid
level is below the LOWER (lower limit level) mark.
Otherwise, the battery component parts may
prematurely deteriorate, which may shorten the
battery's service life or cause an explosion. Check the
fluid level regularly and add distilled water as required
so that the fluid level is between the UPPER and
LOWER levels.

5. Read and follow the directions "STARTING WITH AN
AUXILIARY BATTERY" in "OPERATION OF THE
ENGINE", when starting with an auxiliary battery.

6. Keep a first-aid box and a fire extinguisher at hand at
all times.

5SAFE OPERATION

(1) Chain
(2) Block

5. Avoid abrupt braking of the vehicle with the excavator
loaded. Sudden braking cause the excavator to move
and may cause a serious accident.

SAFE OPERATION6

7. Do not open the radiator cap before the radiator has
cooled down sufficiently
First loosen the cap to the first stop and allow the
system enough time to release the remaining
pressure. Then loosen the cap completely.

8. To avoid short-circuiting the battery, always remove
the ground cable first and attach the positive cable
first.

9. Oil under high pressure can penetrate the skin and
may be harmful to your health if not treated
immediately.

10.Leaking hydraulic fluid has enough pressure to
penetrate the skin and cause serious injuries.
Leakages from pin holes can be totally invisible. Do
not use hands for checking for leaks. Always use a
piece of wood or cardboard. It is strongly
recommended that you use a face mask or eye
protection.
Should injuries occur with leaking hydraulic fluid,
contact a doctor immediately. This fluid can cause
gangrene or serious allergic reactions.

13. To avoid fire, do not heat the hydraulic components
(tanks, pipes, hoses, cylinders) before they have been
drained and washed.

14.Use eye protection or a face mask to protect the eyes
and respiratory system against dust and other foreign
particles.

15.Securely support excavator with stands or suitable
blocking before working underneath. For your safety,
do not work under any hydraulically supported
devices. They can settle, suddenly leak down, or be
accidentally lowered.

11.To avoid environmental damage from acid and heavy
metals, dispose of the battery appropriately.

12.Observe all laws and regulations concerning the
disposal of used oil, coolants, solvents, hydraulic
fluids, battery acids and batteries.

16. Do not dismantle the spring of the track tensioner. If
dismantling is necessary, contact your KUBOTA
dealer where the machine was purchased, or
competent service shop. The assembly must be done
according to the KUBOTA work shop manual (W.S.M.)
for the product involved.

17.When lifting the machine itself with an attachment,
place a safety block or safety post to prevent the
machine from rolling over. Keep the lock lever for
attachment control in the "LOCK" position.

18. Inspect ROPS / OPG for damage and if damage is
found contact your KUBOTA dealer for repair.

19.KUBOTA does not use asbestos containing
components and recommends against the use of such
components.
Components containing asbestos should be handled
in accordance with applicable regulations and industry
practice.

7SAFE OPERATION

SAFE OPERATION8

DANGER, WAR NI NG AN D CAUTION LABEL S

9SAFE OPERATION

SAFE OPERATION10

11SAFE OPERATION

SAFE OPERATION12

13SAFE OPERATION

CARE OF DANGER, WARNING AND CAUT ION LABELS

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

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

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

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

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

DEALER SERVICE

Your KUBOTA dealer is always ready to help so that your
excavator offers the best performance. After having
carefully read this manual, you will realize that much of the
routine maintenance can be done by yourself. Your
KUBOTA dealer is responsible for servicing and the
delivery of spare parts. When ordering spare parts from
your KUBOTA dealer, always mention the serial number
of the excavator and the engine.
Note these numbers right away in the supplied lines.

Model Serial No.
Excavator
Engine

1DEALER SERVICE

Dealer's name
(To be filled in through the owner)

(1) Serial No.

(1) Engine serial No.

2 TECHNICAL DATA

TECHNICAL DATA

KUBOTA EXCAVATOR
Model name KX016-4 KX018-4
Type canopy
Mass (without operator) kg 1490 1620

Volume (CECE) m 0.035 0.040
Standard
bucket

Width [with side cutter] mm 402 [422] 450 [474]

Weight kg 32.5 33.5

Type

(water cooled 4 cycle Diesel)

Model name D782-BH-5 D902-BH-2
Engine

Performance

Dozer (width & height) mm 990 / 1240 x 230 990 / 1300 x 230

Boom swing angle

Pressure
connection
for attachments

Total displacement cm 778 898

Output (ISO 9249) kW (Hp) 9.6 (12.9) 11.8 (15.8)

Rated speed rpm 2300

Swing speed rpm 9.1

Travel

speed

Ground pressure kPa

(kgf/cm )

Climbing angle % (deg) 27 (15)

Max. lateral sway %

(degree)

Max. displacement

L (US gal) / min

Max. pressure MPa

(kgf/cm )

fast km/h 3.8 4.0
slow km/h 2.1 2.2

Left rad (deg) 1.31 (75)
Right rad (deg) 1.05 (60)

3 cylinder - diesel engine water cooled

25.5

(0.26)

18 (10)

27 27.7

20.6

(210)

(0.26)

25.5

21.6

(220)

Fuel tank capacity L 21

A Above dimensions are based on the machine with JPN bucket.

JPN = made in Japan

A Above dimensions are based on the machine with rubber crawlers.
A Specifications subject to change without notice.

DESCRIPTION OF MACHINE PARTS

3DESCRIPTION OF MACHINE PARTS

DEPICTED CONTENTS
(1) Arm
(2) Bucket cylinder
(3) Bucket link 2 and 3
(4) Bucket link 1
(5) Bucket
(6) Boom cylinder
(7) Swing bracket
(8) Track
(9) Dozer blade
(10) Boom
(11) Arm cylinder
(12) Canopy(Rops / OPG Top Guard)
(13) Working light
(14) Drive sprocket
(15) Front idler
(16) Dozer cylinder

4 INSTRUMENT PANEL AND CONTROL ELEMENTS

INSTRUMENT PANEL AND CONTROL ELEMENTS

B Switches

DEPICTED CONTENTS
(1) Horn switch
(2) Travel speed switch
(3) Starter switch
(4) Working light swi tch
(5) Beacon switch
(6) Engine stop knob
(7) User setting switch (switch 2)
(8) Display selector switch (switch 3)

B Control Pe dal s an d Levers

5INSTRUMENT PANEL AND CONTROL ELEMENTS

DEPICTED CONTENTS
(1) Throttle lever
(2) Drive lever (left)
(3) Drive lever (right)
(4) Attachment control lever (left)
(5) Attachment control lever (right)
(6) Dozer control lever
(7) AUX port pedal
(8) Boom swing pedal
(9) Lock lever (Unload lever)*
(10) Track width change lever
(11) TPSS lever

D When the lock lever (unload lever) is pulled up, it prevents inadvertent machine movement.

6 INSTRUMENT PANEL AND CONTROL ELEMENTS

B Instru m ent P a nel

DEPICTED CONTENTS
(1) Speed indicator lamp
(2) Insert key lamp
(3) Pull out key lamp
(4) Periodic check la mp
(5) Clock setting request lamp
(6) Glow lamp
(7) Remaining fuel warning lamp

(8) Engine oil pressure warning lamp
(9) Battery charge lamp
(10) Coolant temperatu re warning lamp
(11) Warning lamp
(12) Fuel gauge
(13) Coolant temperatu re gauge
(14) LCD display

CHECKS BEFORE START

7CHECKS BEFORE START

DAILY CHECKS

In order to avoid damage, it is important to check the
condition of the excavator before starting.

To avoid personal injury:
A Do maintenance work on the excavator only on

level ground with the engin e off and the lock
lever (unload lever) in the "Lock" position and
key removed from machine.
Then block the tracks with the blocks.

BWorking Light Switch

To turn on the working light, set the starter switch to the
"RUN" and then the working light switch to the "ON"
positions, respectively.

(1) Working light switch

(1) Lock le ver (Unload le ve r) (A) "Unlock"

(B) "Lock"

Checks

Go around the excavator and check for visual damage
and wear.
Check coolant level. (See regular checkpoints in the
chapter on maintenance.)
Check fuel level.
Check engine oil level.
Check hydraulic fluid level.
Check air filter for clogging.
Check all control lamps, indicators, tachometer and hour
meter.
Check the light system.
Check the seat belt and the ROPS/OPG Top Guard safety
device.
Check the condition of the safety labels.
(See "DANGER, WARNING AND CAUTION LABELS" in
"SAFE OPERATION".)

8 OPERATION OF THE ENGINE

OPERATION OF THE ENGINE

To avoid personal injury:
A Read "SAFE OPERATION" at the beginning of

this operator's manual.

A Obey the danger, warning and caution labels

on the excavator.

A To avoid the danger of exhaust fume

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

A Always start the engine from the operator's

seat. Do not start the engine while standing
next to the excavator. Before starting the
engine, sound the horn to get the attention of
persons standing nearby.

(1) Drive lever (left)
(2) Drive lever (right)
(3) Attachment control lever (left)
(4) Attachment control lever (right)
(5) Lock lever (Unloa d le ver)

(1) Horn switch

A Do not use starting fluid or ether.
A In order not to overload the battery and starter, avoid

start-ups of more than 10 sec.

A When engine does not start in 10 sec., please wait 20

sec. or more, before attempting to restart.

STARTING THE ENGINE

To avoid personal injury:
A The operator should not d epend solely on the

warning lamps, but should always conduct the
routine checks (see "MAINTENANCE").

Start the engine in the following manner:

1. Before starting the engine, make sure that all control
levers are in the neutral positions.

2. Pull the lock lever (unload lever) all the way back. (lock
position)

3. Put the throttle lever backward .

4. Insert the key into the starter switch and turn it to the
position "Run". The glow lamp indicator will light up
while the engine is preheated and will go out
automatically after preheating is finished.

(1) Starter sw itch (A) "STOP"

(B) "RUN"
(C) "STAR T "

5. Turn the key to the position "START" and release after
the engine has started.

6. Check if engine oil pressure warning lamp and battery
charge lamp have gone out. Should a warning lamp
still be lit up, stop the engine then remove the key and
check for the cause.

9OPERATION OF THE ENGINE

BDisplay Selector Switch

Press the display selector switch. The electronic meter's
LCD display will change from one indication mode to the
other.
Change the three-mode display according to your jobs.

C Setting the clock
[Selecting the clock setting mode]

1. Press the user setting switch (switch 2).

2. Select the clock setting mode by pressing the display
selector switch (switch 3) and the clock setting request
lamp " " on the instrument panel lights up.

(1) User setting switch (s w itch 2)
(2) Display selector switch (switch 3)
(3) Clock setting request lamp

(1) Display selector switch
(2) LCD display

A With the starter key at the "STOP" position, press the

electronic meter's display selector switch, and the LCD
display shows the hour meter for 10 seconds.

A Press switch 3 for a long time and the year, month,

day, hour and minute will be selected in this order.

[Setting the year]

Press switch 2 and the numeric setting will be smaller.
Press switch 3 and the numeric setting will be larger.

Switch 2 Switch 3

2008
2007
2006

2010
2009
2008

A While setting the clock, the clock setting request lamp

" " on the instrument panel is blinking.

OPERATION OF THE ENGINE10

[Setting the month]

Press switch 2 and the numeric setting will be smaller.
Press switch 3 and the numeric setting will be larger.

Switch 2 Switch 3

10

9
8

11
10

9

[Setting the day]

Press switch 2 and the numeric setting will be smaller.
Press switch 3 and the numeric setting will be larger.

[Setting the hour]

Press switch 2 and the numeric setting will be smaller.
Press switch 3 and the numeric setting will be larger.

Switch 2 Switch 3

11
10

9

12
11
10

[Setting the minute]

Press switch 2 and the numeric setting will be smaller.
Press switch 3 and the numeric setting will be larger.

Switch 2 Switch 3

Switch 2 Switch 3

09
08
07

11
10

9

[Changing the AM/PM system to the 24-hour system]

Select the AM/PM system or 24-hour system by pressing
switch 3.

50
49
48

52
51
50

If switch 3 is pressed for a long time, the new settings will
be made.

A If the battery is disconnected, the clock setting request

lamp " " (yellow) will blink for requesting the setting
the clock.

11OPERATION OF THE ENGINE

BBattery Charge Lamp

This warning lamp lights up if the charging system fails
with the engine running. When the starter switch is turned
to "RUN" with the engine off, the lamp lights up, and when
the engine starts, the lamp goes out. If the lamp stays on
with the engine running, stop the engine and check the fan
belt.

A If there is disconnection or failure in the charging

system when the key is turned to "RUN", the following
symbol will appear.

BGlow Lamp

With the starter key at the "RUN" position, the engine's
preheat status is indicated.

A When the starter switch is turned to the "RUN"

position, the engine will be preheated for a given
period of time and the lamp will turn on.

A The above indication appears momentarily when the

engine is started, but it does not indicate trouble. (This
is because the oil charge sensor output fructuates
when the engine is started.)

A The following symbol appears momentarily as the

engine starts. This is not an error.

(1) Battery charge lamp
(2) Engine oil pressure warning lamp

BEngine Oil Pressure Warning Lamp

The engine oil pressure warning lamp lights up due to
failure of the lubricating system with the engine running.
When the starter switch is turned to "RUN" with the
engine off, this lamp lights up, and when the engine starts,
the lamp goes out. If the lamp stays on with the engine
running, stop the engine and check the engine oil level.

A If there is disconnection, failure or breakdown in the

lubricating system when the key is turned to "RUN",
the following symbol will appear.

(1) Glow lamp

OPERATION OF THE ENGINE12

BLCD Display for Nor m al Operation

C Fuel gauge

To avoid personal injury:

A Before adding fuel, be sure to stop the engine.
A Be sure to keep open flame away from the

machine. Otherwise a fire may result.

If the fuel in the tank goes below the prescribed level, the
warning lamp will flash.
If this should happen during operation, refuel as soon as
possible.

C Coolant Temperature Gauge

To avoid personal injury:
A Do not open the radiator cap during or just after

operation. Hot coolant may gush out and scald
you. Wait for the coolant to cool down before
opening the cap.

With the starter key at the "RUN" position, the cooling
water temperature is indicated.

(1) Fuel gauge
(2) Remaining fuel warning lamp

(A) "FULL"
(B) "EMPTY"

A If the fuel gauge indicator is near the "", add fuel as

soon as possible. If the indicator is near "" and the
machine operates on a slope, the engine may run out
of fuel.

A To open the fuel cap, keep the starter key inserted.

(1) Coolant temperat ur e gauge (A) "HOT"

(B) "COOL"

C Hour-meter

Indicates the total operating hours of the machine.

How the indicator works
A The meter advances one hour after an hour of

operation regardless of the engine rpm.

C Engine tachometer

Indicates the current rpm of the engine.

A The LCD display may be illegible when viewed from a

certain angle. This is not a display failure.

BLCD Display for Warning

C Engine oil pressure warning lamp

The engine oil pressure warning lamp lights up due to
failure of the lubricating system with the engine running.
When the starter key is turned to "RUN" position with the
engine off, this engine oil pressure lamp lights up, warning
lamp blinks and when the engine starts, the lamps go out.
If the lamp stays on with the engine running, stop the
engine and check the engine oil level.

13OPERATION OF THE ENGINE

BWarning Lamp

The warning lamp is used to indicate broken wire, short­circuit, fuel shortage and other problems.

A Do not just look at the meter, but also carry out the

inspection and correction accordingly.

A The warning lamp starts flashing in red if a serious

problem occurs. If the system gets in warning signal,
the warning lamp starts flashing in yellow.

A Warnings and errors are displayed and an alarm

buzzer beeps.

A Let your KUBOTA dealer inform you of details

concerning care and maintenance.

(1) Engine oil pressure lamp
(2) Warning lamp (red)
(3) Warning message

C Battery charge lamp

This battery charge lamp lights up if the charging system
fails with the engine running.
When the starter key is turned to "RUN" position with the
engine off, the battery charge lamp lights up, warning
lamp blinks and when the engine starts, the lamps go out.
If the lamp stays on with the engine running, stop the
engine and check the V-belt.

(1) Warning lamp
(2) Warning message

C Overheat warning

1. If the coolant temperature becomes elevated, the
coolant temperature warning lamp blinks and the
warning message (E : 015) appears on LCD
display.The message fades out after a short time and
the coolant temperature warning lamp blinks as long
as the temperature remains elevated. Operate the
machine only with reduced loads until the operating
temperature is normal again.

(1) Battery charge lamp
(2) Warning lamp (red)
(3) Warning message

OPERATION OF THE ENGINE14

(1) Coolant temperat ur e warning lamp
(2) Warning message

BCheckpoints after Starting the Engine

After starting the engine, but before starting operation,
check the following points:

1. Put the throttle lever down and let the engine idle for
approx. five minutes. This allows the engine lubricant
to warm up and penetrate every part of the engine.

STARTING THE ENG INE UNDER COLD
CONDITIONS

To avoid personal injury:
A Make sure that the lock lever (unload lever) is in

the lock position during warm up.

Start the engine in the following manner;

1. Pull the lock lever (unload lever) all the way back (lock
position).

2. Turn the starter switch to the position "RUN" (glow
position) and keep until the indicator lamp has gone
out.

3. Move the starter switch to the position "START"; to
crank and start engine.

4. Release the starter switch after the engine has started;
it will automatically return to the position "RUN ".

A Let the engine warm up after start-up for approx. 10

minutes under no load conditions. If the hydraulic fluid
temperature is too low, the operation will be affected.
Do not operate the excavator under full load until the
engine has sufficiently warmed up.

A This idling is usually called "Warm-up".

2. Once the engine has warmed up, check:
A the warning lamp "Engine oil pressure" has gone

out.

A the warning lamp "Battery charge" goes out when

engine speed is increased.

A the color of the exhaust is normal and no abnormal

noises or vibrations are heard or felt.

A no fluid is leaking from pipes or hoses.

C Should any following conditio ns occur, stop the

engine immediately.

A The engine rpm's increases or decreases suddenly.
A Sudden abnormal noises are heard.
A Exhaust is black.
A Warning lamp for engine oil lights up during operation.

A In these cases, the excavator must be checked and

serviced by your local the KUBOTA dealer.

BPrecautions in case of Overheat

To avoid personal injury:
A Do not open the radiator cap during and ju st

after operation. Hot coolant may gush out and
burn you. Wait long enough until the radiator
cools down.

If by any chance coolant gets heated up to the boiling
point or over (overheated), take the following steps.

1. Stop operation in a safe position.
(Disconnect the engine's load.)

2. Do not stop the engine suddenly. Keep the engine
idling under no load for about 5 minutes and then turn
it off.

3. Keep yourself enough away from the machine for
another 10 minutes or while steam is emitting.

4. Make sure there is no hazard of getting burned.
Pinpoint and remove the cause of overheat, referring
to "TROUBLESHOOTING". Then restart the engine.

STOPPING THE ENGINE

To avoid personal injury or death:
A Do not keep the bucket or dozer in the lifted

position, as a person could accidentally touch
the levers and cause serious accidents.

1. After slowing the engine to idle, turn
the key to "STOP".

2. Remove the key.

3. Pull the lock lever (unload lever) to
"LOCK" position.

BEngine Stop Knob

To avoid personal injury:

A Keep hands away from rotating parts.

A Be sure to return the stop knob to former position after

the engine stops.

The engine stops when the starter key is turned off. If the
engine does not stop, pull the stop knob to stop the
engine.

15OPERATION OF THE ENGINE

BObserve Following Guidelines when

Starting with an Auxiliary Battery

1. Bring the helping machine with the same battery
voltage as near as possible to the machine.
THE MACHINES MUST NOT COME IN CONTACT
WITH EACH OTHER.

2. Bring the levers and pedal of both machines in the
neutral position.

3. Wear eye protection and rubber gloves.

4. Ensure the vent caps are securely in place (if
equipped).

5. Connect the terminal of the red jumper cable with the
plus (+) terminal of the low battery and connect the
other end of the cable to the plus (+) terminal of the
auxiliary battery.

6. Connect the black negative cable to the minus (-)
terminal of the auxiliary battery.

7. Connect the other end of the black cable (coming from
the auxiliary battery) to the machine frame as far away
as possible from the low battery.

8. Start the engine of the helping machine and let it run
for a while. Start the machine with the low battery.

9. Disconnect the jumper cables in the reverse
sequence.

(1) Stop knob
(2) Starter key

STARTI NG WITH AN AUXILIAR Y BATTERY

To avoid personal injury:
A Battery gases can explode.

Do not smoke and keep sparks and flames
away.

A Do not start the engine with an auxiliary battery

if excavator battery is frozen.

A Do not connect the black jumper cable to the

negative (-) terminal of the excavator battery.

(1) Low battery
(2) Auxiliary battery
(3) Jumper cables

A This excavator has a negative (-) ground 12 Volt

starting system.

A Only use the same voltage when using an auxiliary

battery.

A Using a higher voltage will cause serious damage to

the electrical system. When using an auxiliary battery,
only the compatible (same) voltage is permissible.

16 EXCAVATOR OPERATION

EXCAVATOR OPER ATION

RUNNING-IN O F TH E NEW EXC AVA TO R

The operation and care of the new excavator influences
its life span. Your new excavator has been carefully
checked and tested before leaving the factory. In spite of
this, all movable components must run-in during the first
50 work hours. Do not work with full rpm's and full loads
during this period. It is most important to run-in your
excavator properly in order to achieve its full performance
and longevity. During the running-in, the following points
should be adhered to in all cases.

BDo not Work with Full Engine Rpm's or

Full Loads during the First 50 Working
Hours

A Let the engine warm up sufficiently i n the cold s eason.
A Do not let the engine rev-up more than necessary.

BOil Change in the Run-in Stage

The lubrication oil plays a specific and important role
during the run-in phase of the excavator. The numerous
movable parts are not yet run-in, so many fine metal
particles are generated and cause damage and shorten
the life of many components. Pay attention to the oil­change intervals and complete them sooner than later.
See "REGULAR CHECKS AND MAINTENANCE WORK"
section for more details on the oil-change intervals.

STARTING

1. Wear the seat belt.

BSeat Belt

To avoid personal injury or death:
A Always use the seat belt with a ROPS/OPG Top

Guard protection structure. Adjust the seat to
the optimal position and buckle up.

(1) Seat belt

2. Adjusting the Operator's Position.

BOperator's Seat

To avoid personal injury:
A Make sure that the seat is completely secured

after each adjustment.

A Do not allow any person other than the driver to

ride on the excavator.

17EXCAVATOR OPERATION

[KX016-4]

(1) Weight indicator
(2) Lever
(3) Backrest adjust m ent lever
(4) Horizontal seat adjustment lever

C Horizontal seat adjustment (seat stand-off)

Pull the horizontal seat adjustment lever up and move the
seat to the desired position by moving it forward or back,
then release the lever.

[KX018-4]

(1) Backrest adjustment lever
(2) Weight indicato r
(3) Spring adjustment grip
(4) Horizontal seat adj us t m ent le ver

C Horizontal seat adjustment (seat stand-off)

Pull the horizontal seat adjustment lever up and move the
seat to the desired position by moving it forward or back,
then release the lever.

A Check that the seat is locked into place.
C Spring adjustment (driver's weight)

1. The seat can be set to the weight of the driver with the
lever. The weight indicator is provided as an
adjustment aid.

2. Pressing down the lever increases the spring tension
(suitable for heavier operators), pulling the lever
upward reduces spring tension (for lighter operators).

3. Adjust the seat so that a comfortable cushioning is
achieved.

C Backrest adjustment

Take the load off the backrest and pull up the backrest
adjustment lever. Set the backrest to the desired sitting
position and release the lever. The backrest should be
adjusted so that the operator can safely operate the
control levers with the back resting completely on the
backrest.

A Check that the seat is locked into place.
C Spring adjustment (driver's weight)

1. The seat can be set to the weight of the driver with the
lever. A weight indicator is provided as an adjustment
aid.

2. Sit down on the driver's seat.

3. Swing out spring adjustment grip by 90 degrees.

4. Use up and down pumping movements to change the
spring tension until your own body weight is shown in
the weight display.

A Adjust the seat until the marker arrow is in the centre

of the weight display.

C Backrest adjustment

Take the load off the backrest and pull up the backrest
adjustment lever. Set the backrest of the desired sitting
position and release the lever. The backrest should be
adjusted so that the operator can safely operate the
control levers with the back resting completely on the
backrest.

EXCAVATOR OPERATION18

3. After starting the engine, bring the lock
lever (unload lever) into the "Unlock"
position to use drive lever or control
lever for front attachments.

BLock Lever (Unload Le ver)

To avoid personal injury:
A To avoid injuries, check safety features all

around the excavator.

A With the lock lever (unload lever) pulled down, the

engine fails to start.

If you try to start the engine with the key with the lock lever
(unload lever) down, the " " lamp (yellow) starts
flashing.

BWorking Light Switch

When the starter switch is in position "RUN", the light(s)
will be switched on by pressing the switch.

(1) Working light switch

C Night operation

To avoid personal injury:
A Visibility is reduced in darkness, therefore the

work light alone may not be enough. In wh ich
case, prepare additional stationary artificial
lighting, observe safety rules as well as special
regulations for night work.

(1) Lock lever (Unload le ver ) (A) "Unlock"

(B) "Lock"

BBeacon Light Switch

It is equipped only with the switch (including the coupler
for connecting in a rear left speaker).
Since it isn't equipped with the beacon main part, please
post - install, when required.

(1) Beacon light switch

19EXCAVATOR OPERATION

OPERATION OF TRACK WIDTH CHANGE

To avoid personal injury or death:
A Operate always in standard track width 1240

mm [KX016-4] / 1300 mm [KX018-4], except to
pass through narrow space.
Do not operate in narrow track width 990 mm,
or the risk of the excavator tip-over increases.

Pull up the track width change lever (1). The track width
increases from 990 mm to 1240 mm [KX016-4] / 1300 mm
[KX018-4].
Push down the track width change lever (1), and the track
width reduces from 1240 mm [KX016-4] / 1300 mm
[KX018-4] to 990 mm.

OPERATION OF THE DOZER

1. To raise the dozer, pull back the control lever. Pushing
the control lever forward, lowers the dozer.

(1) Dozer control lever (A) "Raise"

(B) "Lower "

(1) Track width change lever ( A) "I nc re ase"

(B) "Reduce"

(2) Dozer (A) "Raise"

(B) "Lower "

2. While undertaking earth moving work, control both
drive levers with the left hand and the dozer control
lever with the right hand.

EXCAVATOR OPERATION20

BAdjustment of the Dozer Width

In order to change from standard width to narrow width:

1. Pull out the locking pin (2) and rotate the extension
dozer (1).

2. Set per the illustration below and insert locking pin (2).

3. Perform for both sides.

DRIVING

To avoid personal injury or death:
A Before starting the engine, make sure that no

one is near the excavator.

A Before operating the excavator, check the track

direction. (Front idler and dozer blade to the
front of the excavator).

(1) Dozer blade (A) Direction of operation of

drive levers
(B) Direct i on of travel

(1) Extension dozer
(2) Fixing pin

A Use extra caution when traveling across a

slope or working sideways on a slope.

A Take precautions against tipping over. Stay

away from steep slopes and embankments. Do
not swing the bucket downhill. Lower the dozer
blade when digging. Keep the bucket as low as
possible while driving uphill.
Turn slowly on slopes (at reduced speed ). Do
not place the excavator near the edges of
trenches and banks, as the earth can give away
due to the weight of the excavator.
ALLOWABLE CLIMBING ANGLE : 36 % (20
deg.)
ALLOWABLE ANGLE CROSS : 27 % (15 deg.)

21EXCAVATOR OPERATION

A Recommended technique for working on a

slope.

1. Adjust the engine speed from idling to an intermediate
speed.

2. Unlock the lock levers and pull in the bucket and hold
the bucket about 20 to 40cm above the ground.

3. Activate the dozer control lever to raise the dozer.

(1) Lock lever (A) "Unlock"

(B) "Lock"

(A) 20 to 40 cm

(1) Dozer control lever
(2) Dozer

(A) "Raise "
(B) "Lower "

EXCAVATOR OPERATION22

BDrive Levers(Right,Left)

To avoid personal injury or death:
A If the swing frame has been turn 180deg, i.e. the

dozer in relation to the operator's seat is
"behind", then the travel direction is opposit e
to the drive direction of the levers (when
activating the drive lever forward, the machine,
in relation to the operator's seat, will move
backward).

Push both drive levers simultaneously forward to drive the
excavator straight forward. Releasing the drive levers
stops the excavator immediately.
Pull both drive levers simultaneously backward to drive
the excavator straight backward. The front of the
excavator is the side where the dozer is located; the drive
sprocket is in the rear of the excavator.

BTravel Speed Switch

Travel speed will increase when this switch is pushed
down.
Switching the dual travel speed:

1. Press the travel speed switch. The buzzer beeps and
the travel speed changes from first speed to second.
The symbol lights up.

2. Press the travel speed switch again, and the buzzer
beeps and the travel speed changes from second
speed to first. The symbol light goes out.

(1) Drive lever (left)
(2) Drive lever (right)

(A) "Forward"
(B) "Backward"
(C) "Straight"

(1) Travel speed swi t ch
(2) Speed indicator lamp

A When activating the travel speed switch, it must be

pushed down completely.

A Each time the travel speed switch is pressed, the

travel speed is switched between first and second.

23EXCAVATOR OPERATION

A Do not activate the travel speed switch when there is

increased drive resistance (e.g. driving on inclines or
on uneven grounds).

A If the tracks are clogged with sand or gravel while

working on soft ground, lift up one track with the help
of the boom, arm and bucket and let the track rotate to
remove the sand and gravel.

(A) "Rotate to remove sand
and gravel"

TURNS

To avoid personal injury:
A Do not change direction on steep slopes, or the

excavator could tip over.

A Before changing direction, beware of people in

the work area.

BPivot Turn

A Movement as illustrated is done with the dozer blade

in front of the operator.

C Change of Direction while Travelling

1. While travelling forward, bring the left drive lever into
the neutral position;
the excavator will turn in the direction of the arrow of
the illustration below.

To avoid serious injury or death:
A Do not work under the machine in this

condition.

(A) "Travelling forward" (N) "Neutral position"

2. While travelling backward, bring the left drive l ever into
the neutral position;
the excavator will turn in the direction of the arrow of
the illustration below.

(B) "Travelling backward" (N) "Neutral position"

EXCAVATOR OPERATION24

C Change of Direction while Stationary

1. Push the left drive lever forward;
the excavator will turn in the direction of the arrow of

the illustration below.

2. Pull the left drive lever backward;
the excavator will turn in the direction of the arrow of
the illustration below.

BSpin Turn

When both drive levers are activated in the opposite
directions, both tracks will rotate with the same speed but
in opposite directions. The center of rotation is the center
of the excavator.

(A) "Left spin turn"

(B) "Right spin turn"

25EXCAVATOR OPERATION

UP AND DOWNHI LL DRI V IN G

To avoid personal injury:
A Before travelling up and downhill, be sure to be

in standard track width (KX016-4:1240mm,
KX018-4:1300mm).

A When travelling up or down a slope for long

periods of time, be sure to engage the swing
lock pin. Also engage the swin g lock pin when
standing on a slope for a long time or the
excavator is being transported.

While traveling uphill, keep the lower edge of the bucket
approx. 20 to 40cm (8 to 16 in.) above the ground.
Although the KUBOTA excavator will not slip easily
because of the tracks, it is safer to let the bucket slide over
the ground while traveling downhill. Always choose slow
speed for uphill and downhill traveling.

[UPHILL TRAVELING]

[DOWNHILL TRAVELING]

(A) 20 to 40 cm (8 to 16 in.)

EXCAVATOR OPERATION26

TWO PATTERN SELECTION
SYSTEM(TPSS)

To avoid personal injury:
A Study control lever pattern A and pattern B.

Then choose the one which is most familiar.

A Position the pattern selector lever (located

under the operator's seat) in either the lower
position (Pattern A) or the upper position
(Pattern B).

A Before changing the pattern, be sure to stop

the engine.

A Engage the lock to prevent accidental pattern

change.

A Familiarize yourself with the pattern selected

by operating slowly.

BPattern Change

1. Open the cover and position the pattern selector lever
to the desired position and engage the lock.

2. Close the cover.

Lever Position Pattern A Pattern B

Attachment
Control Lever
(Left)

Attachment
Control Lever
(Right)

Boom down

A

Boom up

B

Swing left

C

Swing right

D

Arm up
Arm crowd
Bucket crowd
Bucket dump

Arm up
Arm crowd
Swing left
Swing right

Boom down
Boom up
Bucket crowd
Bucket dump

(1) Pattern selector lever
(Two Pattern Selection System:TPSS)

(A) "Pattern A"
(B) "Pattern B"
(C) Pull to unlock

27EXCAVATOR OPERATION

OPERATION OF THE BOOM

To raise the boom, pull the attachment control lever back.
The boom is equipped with a cushion cylinder which helps
prevent excavated material in the bucket from falling out.
At low hydraulic oil temperature, (e.g. after starting the
engine in cold weather) the cushioning function will be
effected for a short period of time (approx. 3 to 5
seconds). This condition results from the viscosity of the
hydraulic oil and is not a sign of malfunction.
The cushion cylinder will operate normally as the oil
warms up.
To lower the boom, push the attachment control lever
forward.

OPERATION OF THE ARM

Pull back the attachment control lever and the arm will be
pulled in. To move the arm out, push the control lever
towards the front.

A When pulling in the arm, the movement may stop for a

short moment when the arm is in its vertical position.
This is caused by the combined load of the arm and
bucket moving the cylinder piston away from the
hydraulic flow causing a delay in the cylinder action,
until the flow catches up with cylinder piston. This is a
characteristic of the hydraulic system and is not a sign
of malfunction.

A When lowering the boom, make sure that it does not

hit the dozer and that the bucket teeth do not touch the
dozer.

EXCAVATOR OPERATION28

OPERATION OF THE BUCKET

To dig using the bucket, move the right attachment control
lever from the neutral position, left. Moving the control
lever right, moves the bucket outward and empties its
contents.

SWIVEL(UNIT SWING)OPERATION

To avoid personal injury:
A When working in groups, always let the others

know what you are going to do before you do it.

A Keep away from the working area.

A Do not operate the left attachment control lever

abruptly from right to left (or vice versa). Because of
the law of inertia, this causes an impact load on the
swing gear and the swing motor. Additionally, the life
of the excavator will be shortened.

A Unlock the swing lock pin before doing swivel

operations.

1. Move the left control lever to the left and the upper
structure will turn to the left.

2. Move the left control lever to the right and the upper
structure will turn to the right.

(A) "BUCKET CROWD"
(B) "BUCKET DUMP"

29EXCAVATOR OPERATION

BOOM SWING OPERATION

1. Flip the pedal lock up to unlock the pedal.

2. Step on the left side of the pedal ( ) to swing the
boom to the left.

3. Step on the right side of the pedal ( ) to swing the
boom to the right.

(1) Boom swing pedal
(2) Pedal lock

AUXILIARY PORT OPERATION

To avoid personal injury:
A Cover the auxiliary port pedal with the pedal

lock when the pedal is not used. Be sure to
cover the pedal.

This pedal is used to operate auxiliary hydraulic
attachments such as breakers.

(1) AUX port pedal
(2) Pedal lock

A Push the left part of the pedal ( ), send oil to the pipe

(A).

A Push the right part of the pedal ( ), send oil to the pipe

(B).

[KX016-4]

Max. Flow Volume

(Theoretical L/min.)

27.0
(7.2)

Max. Pressure

MPa (kgf/ )

20.6

(210)

EXCAVATOR OPERATION30

[KX018-4]

Max. Flow Volume

(Theoretical L/min.)

Max. Pressure

MPa (kgf/ )

A When the AUX port is not used for a long period, dirt

particles can settle in the lower part of the service port
lines.
When the plugs on the AUX port lines are removed to
connect attachments, drain approx. 0.1 L of oil per s ide
before making connections.
For breaker choices, contact your dealer.

27.7
(7.4)

21.6

(220)

PARKING ON A SLOPE

To avoid personal injury or death:
A When the excavator is parked or left

unattended on a slope, be sure to put the
bucket on the ground and place all control
levers in neutral position, then brace the tracks
with chocks.

(1) Chock

IMPORTANT INFORMATION ON
EXCAVATOR OPERATION

A Do not try to crush concrete or boulders using side

swings with the bucket. Also avoid using side sweeps
of the bucket to move earth piles.

A Under all circumstances avoid the following

operations:
A Excavation using the gravitational impact of the

machine.

A Compacting of gravel or soil using the dropping

action of the bucket.

A Excavation using the traveling power of the

machine.

A Do not try to drop or shake off soil adhering to the

bucket in the manner given in the points below. This
can cause damage to the machine.
Adhering soil can be shaken off when the bucket is
being emptied by moving the bucket out to the
maximum stroke of the cylinder. Should this not
suffice, swing out the arm as far as possible and
operate the bucket back and forth.

A Do not hit the dozer with the boom cylinder!

Make sure that the boom cylinder does not hit the
dozer when doing deep excavation. If necessary
swing around so that the dozer is in the back of the
machine.

A Pay attention when pulling in the bucket!

When pulling in the bucket (for driving or
transportation) avoid hitting the dozer.

A Avoid collisions!

When moving the excavator, pay attention that the
dozer does not collide with obstructions such as
boulders etc..
Such collisions shorten the life of the dozer and the
cylinder substantially.

A Support the machine correctly!

When stabilizing the machine with the dozer, lower the
dozer to engage the full width on the ground.

A If the water or mud level reaches higher than the top of

the tracks, the swivel bearing, swivel motor gear and
ring gear may be exposed to mud, water and other
foreign objects.
The excavator must be properly pressure washed
after each use.
A Thoroughly clean the area around the swivel

bearing, swivel motor gear and ring gear to remove
foreign objects.

A Inspect the swivel motor oil sump (if equipped) for

water contamination. If water is present, refer to
operator's manual for lubricant replacement
procedure.

A Refer to operator's manual for proper swivel

bearing, swivel motor gear and ring gear
lubrication procedures.

A Reinstall any protective covering if removed

earlier.

31TRANSPORTING THE EXCAVATOR ON A VEHICLE

TRANSPORTING THE EXCAVATOR ON A VEHICLE

B Transporting on a truck

To avoid personal injury or death:
A No directional changes should be made when

the excavator is on the ramp. Should a change
of direction be necessary, drive off the ramp
completely and make the turn.

A When driving forward or backward onto the

vehicle, or when swinging the upper body,
make sure that neither the CAB or th e gat es of
the vehicle will be damaged.

To avoid personal injury or death:
A After loading the machine on the truck, lower

the bucket and dozer onto the truck bed. L ock
the swing frame with the swing lock pin.

A When the excavator reaches the point between

the ramps and the bed, halt and then move very
slowly until the excavator reaches the
horizontal position.

A Move the excavator onto the vehicle only with

the arm completely pulled in. Otherwise the
CAB of the vehicle could be damaged when
swinging around the upper body.

A Do not jack up the machine using its b oom to

load or unload the excavator from the vehicle.
Doing this is dangerous.

A Make sure the ramp are of sufficient capacity

and securely connected to the vehicle to safety
support the machine throughout th e loading /
unloading operation.

(1) Swing lock pin (A) "Unlock"

(B) "Lock"

Prepare a platform to load or unload the excavator.
Take following steps when using ramps.

1. Apply the parking brakes of the vehicle, and block the
drive wheels from both sides.

TRANSPORTING THE EXCAVATOR ON A VEHICLE32

2. Use mounting brackets to secure the ramp properly.
Connect the ramps directly to the bed.

(A) 4 x H or more

3. For additional safety, use blocks or supports under the
ramps and the bed.

5. Block the tracks and cable down the excavator with
suitable chains and approved method (check
appropriate state regulation).

(1) Chain
(2) Block

4. Align the ramps and the tracks and then drive the
excavator slowly up the ramps. After ensuring that the
tracks are completely on the bed, swing the upper
body around to the back of the vehicle.

(1) Chain

Rated capacity at the tie down points

1680 N

(171 kg)

6. Before unloading, raise the dozer and bucket from the
bed.

LIFTING OF THE EXCAVATOR

B Lifting Procedure for the Excava tor

To avoid serious injury or death:
A The correct instructions for safe handling are

described here. Read these instructions
carefully before moving the machine. Make
sure that the operating personnel read the
operator's manual carefully.

B Basics when Lifting with Cables or Straps

1. The lifting and crane operation is to be undertaken
according to the safe operation guidelines described.

2. The equipment used for lifting mentioned in these
instructions are only given as reference, the standards
concerning strength, control and other details are
based on the respective applicable guidelines.

B Safety Aspects when Lifting with Cables or Straps

Abide by following steps when lifting:

1. Do not lift loads that exceed the maximum load
capacity of the crane.

2. Choose correct equipment suitable to the weight, size
and form of the load.

3. First assess the center of gravity of the load, position
the hook directly over the load and lift the load so that
the center of gravity of the load is as low as possible.

4. The steel cables or straps must be fixed in the middle
of the hook.

5. The load must be lifted vertically from the ground.

6. Do not enter the working area under suspended loads
and do not move the load over people. The load must
only be moved in an area where the balance can be
easily maintained.

To avoid personal injury or death:
A Do not use the hooks on the roof of canopy for

lifting the excavator.

C General guidelines for lifting

1. Lifting position. (see the following illustration.)
(1) Pull in the boom completely toward the canopy.
(2) Pull in the arm completely.
(3) Pull in the bucket completely.
(4) Adjust the swing angle to the center. (to bring the

boom in a position parallel to the machine frame)

(5) Swing frame so that dozer blade is to the rear and

frame is parallel with tracks.

(6) Raise the dozer blade fully.

2. Attaching the steel cables or straps.
(1) Always hook the excavator at three points. (one

on the boom and left and right of the dozer)

(2) Always use a shackle on each lifting hole when

attaching the cables or straps.

(3) Using protective material at all places where the

cables or straps contact the machine.

(4) Keep the angle between the front and rear cables

or straps within 60 (1.05 rad.).

33LIFTING OF THE EXCAVATOR

LIFTING OF THE EXCAVATOR34

3. Tackle
The weights of the excavators and the recommended
tackle for lifting these loads are mentioned in the
following table. Choose components having enough
strength.

Excavator Weight* [KX016-4] Canopy : 1490 kg
Excavator Weight* [KX018-4] Canopy : 1620 kg
Load / Cable 6400 N (652 kgf)
Minimum Cable Diameter

(Safety factor=6)

10 mm or more

*Excavator Weight: With long arm.
Steel cable: 6 x 24

4. Lifting
(1) Lift slowly and safely.
(2) Do not enter the excavator area when lifting.

Maximum strength

for example : (JIS G 35 25) - "6 x24"

Diameter zinc-plated not zinc-plated

10 mm (3/8)

12.5 mm (1/2)

14 mm (9/16)

16 mm (5/8)

18 mm (45/64)

45.8 kN

(4670 kgf)

71.5 kN

(7290 kgf)

89.7 kN

(9146 kgf)

117 kN

(11930 kgf)

148 kN

(15091 kgf)

49.3 kN

(5027 kgf)

77 kN

(7851 kgf)

96.6 kN

(9850 kgf)

126 kN

(12848 kgf)

160 kN

(16315 kgf)

1. Boom side
Hook in the steel cable with a shackle into the lifting
hole.

(1) Steel cable
(2) Shackle

2. Dozer side
Hook in the steel cable with a shackle into the lifting
hole around the canopy.

(1) Steel cable
(2) Shackle

35MAINTENANCE

MAINTENANCE

To avoid personal injury:
A Before doing maintenance work on the machine, place the machine on a firm, flat and level surface, lo wer

the attachments and dozer blade on the ground, release the cylinder pressure by actuating the levers, stop
the engine, lock all control levers, remove the key and then block the tracks with the blocks.

Whether the machine is properly lubricated and maintained directly determi nes the trouble frequency and service life of the
machine. Periodically check and maintain your machine, and you will find in the long run that the jobs can be finished earlier
and more economically.
Shown in the Service Interval Chart below are the hours indicated on the hourmeter, practically, it will be convenient to
schedule the time of inspection and maintenance according to the calendar (day, week, month) on the basis of the chart.
If the machine is used in harder-than-usual working conditions, it must be checked and maintained at shorter intervals.

36 MAINTENANCE

MAINTENANCE INTERVALS

No. Check points Measures

1 Coolant

2 Fuel check Daily check 40

3 E ngine oil

4 Hydraulic oil

5 L ubrication points - Daily check 43
6 Radiator and oil cooler check Daily check 44
7 E ngine and electrical wiring check Daily check 44

8 Fuel tank, Water separator drain every 50 hrs 45, 45
9 Battery condition check ev er y 50 hrs 46

10 Greasing swing bearing teeth - every 50 hrs 47

11 Fan belt tension

12 Radiator hoses and clamps

Air filter

13

element

14 Greasing swing ball bearing - every 200 hrs 48
15 Engine oil filter replace every 250 hrs 49
16 Fuel filter element replace every 500 hrs 50 @
17 Drive unit oil change every 500 hrs 50
18 Hydraulic return filter element replace every 500 hr s 51
19 Hydraulic suction filter element replace every 1000 hrs 52
20 Fuel injection nozzle injection pr essure check every 1500 hrs 53 *4 @

21 Front idler and track roller oil change every 2000 hrs 53
22 Alternator and starter motor check every 2000 hrs 53
23 Injection pump check every 3000 hrs 53 *4 @
24 Radiator system rinse every 2 years 54

25 Fuel line and Intake air line

Outer element

Inner element replace every 1000 hrs 53 *2

check Daily check 40
change every 2 years 54

check Daily check 41
change every 250 hrs 48
check Daily check 42
change every 1000 hrs 52 *1

check Daily check 44
adjust every 200 hrs 49
check every 200 hrs 47
replace every 2 years 54
clean every 200 hrs 47 *2
replace every 1000 hrs 53 *2

check every 200 hrs 48
replace every 2 years 55 *3

50 100 150 200 250 300 350 400 450

Hour meter indicator

Interval

Ref.

page

@

@

D 500 thru 1000 continued to the following table.

37MAINTENANCE

No. Check points Measures

1 Coolant

2 Fuel check Daily check 40

3 Engine oil

4 Hydraulic oil

5 Lubrication points - Daily check 43
6 Radiator and oil cooler check Daily check 44
7 Engine and electrical wiring check Daily check 44

8 Fuel tank, Water separator drain every 50 hrs 45, 45
9 Battery condition check every 50 hrs 46

10 Greasing swing bearing teeth - every 50 hrs 47

11 Fan belt tension

12 Radiator hoses and clamps

Air filter

13

element

14 Greasing swing ball bearing - every 200 hrs 48
15 Engine oil filter replace every 250 hrs 49
16 Fuel filter element replace every 500 hrs 50 @
17 Drive unit oil change every 500 hrs 50
18 Hydraulic return filter element replace every 500 hrs 51
19 Hydraulic suction filter element replace every 1000 hrs 52
20 Fuel injection nozzle injection pr essure check every 1500 hrs 53 *4 @

21 Front idler and track roller oil change every 2000 hrs 53
22 Alternator and starter motor check every 2000 hrs 53
23 Injection pump check every 3000 hrs 53 *4 @
24 Radiator system rinse every 2 years 54

25 Fuel line and Intake air line

Outer element

Inner element replace every 1000 hrs 53 *2

check Daily check 40
change every 2 years 54

check Daily check 41
change every 250 hrs 48
check Daily check 42
change every 1000 hrs 52 *1

check Daily check 44
adjust every 200 hrs 49
check every 200 hrs 47
replace every 2 years 54
clean every 200 hrs 47 *2
replace every 1000 hrs 53 *2

check every 200 hrs 48
replace every 2 years 55 *3

500 550 600 650 700 750 800 1000

Hour meter indicator

Interval

Ref.

page

@

@

First operation
*1 When using a hydraulic hammer, change hydraulic oil and return filter according to the table on "Hydraulic Oil
Change (Including Exchange of the Suction Filter in the Hydraulic Tank) under "EVERY 1000 SERVICE HOURS" in the
chapter "REGULAR CHECKS AND MAINTENANCE WORK".
*2 Clean and replace the air filter more frequently if used under dusty conditions. When the fil ter is very dirty from dusty
conditions, replace the filter.
*3 Replace only if necessary.
*4 Consult your local KUBOTA dealer for this service.
A The items listed above (@ marked) are registered as emission related critical parts by KUBOTA in the U.S.EPA non-

road 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.

MAINTENANCE38

OPENING AND CLOSING OF PARTS

BOpening and Clos ing of th e Fuel Tank Cap

1. Open the tank cap cover, insert the starter key and
turn counterclockwise. Then turn the tank cap counter­clockwise to open.

(1) Fuel tank cap
(2) Tank cap cover

2. To close the tank cap, turn clockwise and turn
clockwise the starter key. Then close the tank cap
cover.

(A) Open

C How to use the funnel

This machine is provided with a funnel that is a standard
accessory.
When refueling the machine, remove the cap and put the
funnel into the filler port. Turn the funnel clockwise until it
clicks with its opening directed upward.

(1) Funnel

A Keep the funnel, inserting it in the sack, at the location

as shown below.

(1) Fuel tank cap

(1) Funnel

BOpening/Closing of the Engine Hood

To avoid personal injury:
A Do not open the engine hood with the engine

running unless in an emergency.

A Do not touch the exhaust muffler or the

exhaust pipe; serious burns can occur.

Insert the key into the key slot and turn it clockwise to
open the hood. To close it, lower the hood and hold it
down tightly. Turn the key counterclockwise to lock the
hood.

39MAINTENANCE

BWhere to keep Operator's Manu al

(1) Operator's manu al st or age

BCup Holder

(1) Key slot (A) "LOCK"

(B) "UNLOCK"

BWhere to store the Grease Gun

(1) Grease gun storage

(1) Cup holder

MAINTENANCE40

DAILY CHECKS

For your own safety and to assure the long life of your
machine, a careful check should be made before each
operation.

BChecking Coolant Level

To avoid personal injury:

A Move the excavator to even ground.
A Make sure that the engine is turned off.
A Do not open the radiator cap right after the

engine has been stopped; Serious burns can
occur from contact with escaping hot coolant
fluid.

A Check the coolant level in the reserve tank only

after the engine has cooled down.

A Remove the radiator cap only if absolutely

necessary.

1. Check to see that the coolant level is between the
"FULL" and "LOW" marks of the reserve tank.

2. When the coolant level drops due to evaporation, add
water only up to the full level.
In case of leakage, add anti-freeze and water in the
specified mixing ratio up to the full level.
(See "Changing Radiator Coolant " in every 2 years
maintenance.)

BChecking Fuel Level

To avoid personal injury:
A Stop the engine and remove the key before

fuelling.

A Do not smoke while fuelling.

A By temperatures over -5 , use No.2-D diesel fuel,

when temperatures are under -5 , use No.1-D diesel
fuel.

A Make sure that the fuel tank will not run empty. Air will

enter the fuel system, and must be purged before
restarting the engine.

A See "PURGING FUEL SYSTEM" in "OTHER

ADJUSTMENTS AND REPLACEMENTS" section.

A To prevent condensation (water) accumulations in the

fuel tank, fill the fuel tank ful l before parki ng overnight.

1. Check the fuel level by the fuel level indicator.

(1) Reserve tank (A) "FULL"

(B) "LOW"

A Do not fill the reserve tank over the "FULL" marking.
A Do not fill with dirty or salty water.

(1) Fuel gauge (A) "EMPTY"

(B) "FULL"

2. Open the tank cap with the starter key, and add fuel.

(1) Fuel tank cap

C Fuel level audible indication switch (when

refueling)

1. With the starter key at the "OFF" position, press the
the user setting switch (switch 2) or the display
selector switch (switch 3), and the fuel level can be
checked with buzzer sound.

2. Start refueling the machine. The buzzer beeping
intervals vary according to how much fuel is poured
into the tank. As the tank fills, the buzzer sounds
almost continuously.

3. While refueling the machine, listen to the buzzer to
know how much the fuel tank is filled.

4. If fuel is poured too slowly, the buzzer sound gets
interrupted. When it is poured again as usual, the
buzzer restarts sounding.

5. To stop refueling halfway (before filling up), press the
fuel level audible indication switch or leave as it is (not
refueling) for a while. The buzzer stops sounding.

41MAINTENANCE

BChecking Engine Oil Level

To avoid personal injury:
A Stop the engine and remove the key before

checking the oil level.

A Use engine oil with the correct viscosity. (according to

the outside temperature)

A After stopping the engine and remove the key, wai t five

minutes, then check oil level. (Excavator must be on
level ground.)

Insert the engine oil dipstick fully into the respective port
opening, remove again and check the oil level; if
necessary fill with oil. The machine must be on level
ground when checking the oil level.

(1) User setting switch (switch 2)
(2) Display selector switch (switch 3)

(1) Engine oil dipstick
(2) Filling port

(A) Required oil level range

MAINTENANCE42

BChecking Hydraulic Oil Level

To avoid personal injury:
A Stop the engine and remove the key before

checking the oil level.

A Before filling oil, wipe away all sand and dust from

around the oil port. Make sure to use an identical type
of hydraulic fluid.

A The excavator has been filled with hydraulic fluid

before delivery. See "RECOMMENDED OILS".
(Do not mix different oils.)

1. Park the excavator on a firm, flat and level surface.
Lower the attachments and dozer blade to the ground
and stop the engine.

4. Should the oil level be too low, fill oil through the oil
port before starting the engine. This step is important
for the protection of the hydraulic system.

(1) Tank cap

2. Check the oil level as to whether it lies on the center of
the gauge at normal temperature (10 to 30 ).

3. Enough oil is present if the oil level lies near the center
of the gauge.

(1) Gauge

BLubrication Points

To avoid personal injury:
A First lower all attachments to the ground then

stop the engine and remove the key.

A While greasing, take caution not to step on the

bucket teeth.

A When doing excavation work in water,

generously grease the following points. After
ending work, grease again.

Grease the marked grease nipples shown by arrows in the
illustration below.

1. Boom bottom linkage............................. 1 place

2. Arm bottom linkage................................ 1 place

3. Bucket link pin........................................ 3 places

4. Boom cylinder boss............................... 2 places

5. Arm cylinder boss.................................. 2 places

43MAINTENANCE

6. Bucket cylinder boss.............................. 1 place

7. Fixing pin between arm and bucket........ 1 place

8. Swing cylinder boss............................... 1 place

9. Swing cylinder bottom............................ 1 place

10. Swing pin............................................... 2 places

11. Dozer cylinder boss (or pin)................... 2 places

12. Dozer linkage pin................................... 2 places

MAINTENANCE44

BCheck Fan Belt

To avoid personal injury:
A Stop the engine and remove the key before

checking the fan belt.

A Check the fan belt for cracks and proper

tension. (See "Checking Fan Belt Tension" in
"REGULAR CHECKS AND MAINTENANCE
WORK" section.)

BChecking Radiator and Oil Cooler

BChecking and Cleaning Engine and

Electrical Wiring

To avoid personal injury:
A Always stop the engine and remove the key

before cleaning the wiring, cables and engine.

Before starting, check whether flammable substances
have gathered on the battery, the cables and wiring, the
muffler or on the engine. Remove thoroughly.
Check the electrical circuitry for disconnections, shorts or
loose terminals.

To avoid personal injury:
A Always stop the engine and remove the key

before checking the radiator.

A Wear eye protection when cleaning with

compressed air.

1. Check if the fins and ribs are clogged.
If so clean with compressed air or steam.

2. Check the rubber hoses for damage and replace if
cracked or old. Check if the hose clamps are tight
enough.

BWashing Whole Machine

A Do not wash the excavator with the engine running.

Water could enter the air filter and damage the engine.
Make sure that the air filter is kept dry.

A Remove the mud before washing the machine.

(1) Oil cooler
(2) Radiator

A Radiator and oil cooler fins and ribs must be clean in

order not to overheat the engine and allow free flow of
air through the cooling elements.

A Pressure of compressed air must be under 205 kPa

(2.1 kgf.cm ).

45REGULAR CHECKS AND MAINTENANCE WORK

REGULAR CHECKS AND MAINTENANCE WORK

BChecking Water Separator

To avoid personal injury:
A Before doing maintenance work on the

machine, place the machine on a firm, flat and
level surface, lower the attachments and dozer
blade on the ground, release the cylinder
pressure by actuating the levers, stop the
engine, lock all control levers, remove the key
and then block the tracks with the blocks.

EVERY 50 SERVICE HOURS

BDraining Fuel Tank

To avoid personal injury:
A Before draining the fuel tank, be sure to stop

the engine and remove the key.

A Do not smoke during inspection.

1. Open the hood.

2. When the separated water is being drained, the red
float moves upwards.
When the float reaches the indication line, close the
cock so that no fuel can run out. Now loosen the ring
nut, and remove the cup and empty completely.

3. Clean carefully not to damage the filter element.

4. Finally, do not forget to open the cock and close the
hood.

1. Turn the drain cock to "CLOSED" position and
remove the drain plug.

2. Turn the drain cock to "OPEN" position and drain
water.

(1) Drain cock
(2) Drain plug

(A) "CLOSED"
(B) "OPEN"

(1) Ring nut
(2) Cup
(3) Cock

(4) Float
(5) Indication line

REGULAR CHECKS AND MAINTENANCE WORK46

BBattery

To avoid the possibility of a battery explosion:
For refillable type battery, follow the instructions
below.
A Do not use or charge the refillable type battery

if the fluid level is below the LOWER (lower limit
level) mark. Otherwise, the battery component
parts may prematurely deteriorate, which may
shorten the battery's service life or cause an
explosion. Check the fluid level regularly and
add distilled water as required so that the fluid
level is between the UPPER and LOWER levels.

To avoid personal injury:
A Never remove the vent caps while the engine is

running.

A Keep electrolyte away from eyes, hands and

clothes. If you are spattered with it, wash it
away completely with water immediately and
get medical attention.

A Wear eye protection and rubber gloves when

working around the battery.

A Before inspection or dismounting the battery,

be sure to turn off the engine and turn the
starter switch to the "OFF" position.

A When removing the battery, always disconnect

the negative ground cable first. When installing
a battery, always connect the ground cable
last. This prevents a possible explosion caused
by sparks.

A Always wear eye protection when working with

the battery.

A Never smoke or have open flame when working

near the battery.

BBattery Charging

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 battery, make sure battery vent

plugs are secured.

A When disconnecting the cable from the battery,

start with the negative terminal first.
When connecting the cable to the battery, start
with the positive terminal first.

A Do not check 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 distilled water in a well­ventilated area.

2. The water in the electrolyte evaporates during
recharging. Liquid shortage damages the battery.
Excess liquid spillage damages the excavator.

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

4. A boost charge is only for emergencies. It will partially
charge the battery at a high rate and in a short time.
When using a boost-charged battery, it is necessary
to recharge the battery as early as possible.
Failure to do this will shorten the battery's service life.

5. When the specific gravity of electrolyte falls between

1.27 and 1.29 charge has completed.

6. When exchanging an old battery for a new one, use a
battery of equal specification.

(1) Battery

47REGULAR CHECKS AND MAINTENANCE WORK

BGreasing Swing Bearing Teeth

1. Pump grease with grease gun through the grease
nipple (at the right end side).

2. Grease at each 90 (1.58 rad.) position of the swing
frame.

3. Fill with approx. 50g of grease (approx. 20 to 30
pumps with the grease gun at each position).

(1) Grease nipple

EVERY 200 SERVICE HOURS

Do all 50-hour servicing at the same time.

A Should the machine be used in extremely d usty areas,

the air filter element must be inspected and cleaned
more frequently than in the specified maintenance
periods.

A The air filter has a dry element, keep free from oil.
A Do not run the engine without the air filter.

(1) Outer element
(2) Inner element (safe ty element)
(3) Case
(4) Dust cover
(5) Clamps

BAir Filter Maintenance

BChecking Radiator Hoses and Clamps

To avoid personal injury:
A Wait long enough for the radiator coolant to

cool down.

Check the coolant hoses for proper connection. This
check should be carried out every 200 hours or every 6
months, whichever comes first.

1. Should the hose clamps become loose or water leaks,
tighten the hose clamps properly.

2. Should the radiator hoses become swollen, aged or
cracked, they must be replaced and the hose clamps
tightened again properly. (See "Replacing of Radiator
Hoses" in "BIENNIAL SERVICING" in "REGULAR
CHECKS AND MAINTENANCE WORK" section.)

BInspection and Cleaning Air Filter Element

Open the engine cover and remove the dust cover. Take
out only outer element, clean the element, case interior
and reassemble. During reassembly, take care to install
the dust cover with facing the TOP mark upward. Do not
remove the inner element (safety element).

To avoid personal injury:
A Wear eye protection.

The quickest and safest method of maintenance is the
exchange of the paper cartridge. Furthermore there are
different methods of cleaning the cartridge.

C Cleaning with compressed air

Pressure of compressed air must be under 205 kPa (2.1
kgf/ ), and the cartridge should be blown clean from the
inside to the outside until the dust deposits are noticeably
reduced.

REGULAR CHECKS AND MAINTENANCE WORK48

A If the air suction is still inadequate, or the color of the

exhaust gases is abnormal even after the cleaning, the
air filter cartridge must be replaced.

EVERY 250 SERVICE HOURS

Do all 50 hour servicing at the same time.

BChanging Engine Oil(First Engine Oil

Change after 50 Service Hours)

To avoid personal injury:
A First stop the engine then remove the key and

wait long enough for the oil to cool down.

1. Remove the drain plug on the underside of the engine
and drain all oil.

2. Re-tighten the drain plug.

BGreasing Swing Ball Bearing

1. Fill with grease through the respective grease nipple.

2. Grease at each 90 (1.58 rad.) position of the swing
frame.

(1) Grease nipple

BChecking Fuel Line and Intake Air Line

1. Check to see that all lines and hose clamps are
tightened and not damaged.

2. If hoses and clamps are found worn or damaged,
replace or repair them at once.

(1) Drain plug

3. Fill through the filling port up the specified level.

(1) Oil filling port

49REGULAR CHECKS AND MAINTENANCE WORK

4. Let the engine idle for approx. 5 min. Check the engine
oil level. To check the engine oil level, insert the
engine oil dipstick completely into the respective port
opening and pull out again. If the oil level lies between
both markings, oil level is sufficient.

A Regardless of the service hours, an engine oil change

is due every six months.

BReplacing Engine Oil Filter(First Engine

Oil Filter Change after 50 Service Hours)

1. Replace the oil filter cartridge at the same time as
doing the engine oil change.

2. Remove the cartridge with the supplied filter wrench.

BChecking the Fan Belt Tension

C Check and adjustment of the fan belt tension

To avoid personal injury:

A First stop the engine and remove the key.
A After servicing, make sure to replace the belt

cover in its original position.

1. Press the fan belt down in the middle, with a force of
approx. 98 N (10 kgf, 22 lbf). The belt tension is correct
if it deflects about 8 mm (0.3 in.). If otherwise, loosen
bolt (1) shift the alternator (2) in the direction shown by
the arrow.

2. Replace the fan belt if worn out, cracked or torn.

(1) Oil filter

3. Oil the O-ring of the new oil filter cartridge lightly. Then
tighten the oil filter cartridge by hand.

4. Fill engine oil to the specified level between the 2
marks on the gauge.

5. Let the engine run for approx. 5 min. and make sure
that the engine oil pressure warning lamp does not
light up. Then stop the engine and remove the key.

6. The engine oil level is reduced by the amount of the
filter capacity after the engine is started. It is necessary
to add oil.

A Always check the oil level after having exchanged the

filter.

Engine oil volumes

(with engine oil filter)

3.6L

(1) Bolt
(2) Alternator

(1) Bolt
(2) Alternator

A If the engine is run with a loose fan belt, the belt could

slip and cause overheating of the engine or insufficient
battery charging. Check fan belt tension regularly.

REGULAR CHECKS AND MAINTENANCE WORK50

A Should the fan belt break or jump off, the battery

charge lamp will light up. Stop the engine and remove
the key immediately.

BReplacing Fuel Filter Element

EVERY 500 SERVICE HOURS

Do all 50 hour servicing at the same time.

BDrive unit Oil Change(First Oil Change of

the 50 hours)

To avoid personal injury:
A Lower all attachments to the ground, stop th e

engine and remove the key before undertaking
the oil change.

1. Rotate the track so that the drain plug of the drive unit
is in the bottom position.

2. Remove the drain plug to let the oil run out. Screw in
and tighten the drain plug again and fill with gear oil
through the oil filling port.

3. Fill oil until it overflows out of the oil filling port.

Oil change

- first oil change after 50 hrs

- then every 500 hrs

- or at least once a year

4. Use prescribed gear oil SAE 90.

To avoid personal injury:
A Keep fire away.

1. Remove the filter with the supplied filter wrench.

2. Apply a light film of fuel to the seal of the new filter and
turn in tightly by hand.

3. Open the cock of the fuel filter again.

(1) Filter element

A After exchange of the filter, the fuel system must be

purged of air.

(1) Drain plug
(2) Oil filling port

Gear oil volume approx. 0.33 L

51REGULAR CHECKS AND MAINTENANCE WORK

BReplacing Hydraulic Return Filter

Element(first replacement after 250
service hours)

To avoid personal injury:
A Remove the oil filter only after the oil in the

hydraulic tank has cooled down.

1. Screw out the cover (1) using a filter wrench.

2. Remove and replace the return filter (3).

3. Check the condition of sealing ring (2) of the cap.
Replace it if necessary.

4. Insert and mount the cover (1).

EVERY 1000 SERVICE HOURS

Do all 50, 200 and 500 hour servicing at the same time.

BHydraulic Oil Check for Machines with

Hydraulic Breakers

The hydraulic oil change after 1000 operating hours in the
operator's manual is based on the type of work done.
Following inspection measures are valid when hydraulic
breakers are used:

1. Changing and filling up of hydraulic oil
(1) The hydraulic oil must be changed more often

when breakers are used because the machine is
subject to harder conditions than normal
excavating work.

(2) Use only the recommended oils mentioned in the

operator's manual when changing or filling with
oil.

(3) When filling up oil, never mix oils of different

makes.

2. Changing the return filter and oil
(1) The filter must be changed more often because of

contamination resulting from the frequent

assembly and disassembly of the hoses.
(2) Use the correct replacement filter.
(3) Oil change according to operating hours.

(1) Cover
(2) Sealing ring
(3) Return filter

A Always check the oil level when replacing the filter

cartridge.

REGULAR CHECKS AND MAINTENANCE WORK52

BHydraulic Oil Change(Including Replacing

Suction Filter in Hydraulic Tank)

To avoid personal injury:
A Wait long enough for the hydraulic fluid to cool

down. Then begin with the change of the
hydraulic fluid.

1. Park the excavator on a firm, flat and level surface.
Lower the attachments and dozer blade on the
ground, release the cylinder pressure by actuating the
levers and stop the engine.

3. Screw out the cover (1) using a filter wrench.

4. Remove the return filter from the hydraulic tank.

5. Screw off the suction filter (2).
If necessary, remove any residues with a clean, lint­free cloth.

6. Screw on the new suction filter by hand.

(1) Cover
(2) Suction filter
(3) Drain plug

2. Remove the drain plug on the underside of the
hydraulic tank and drain the oil.

(1) Drain plug

7. Fill oil through the oil filling opening on the top side of
the tank.

8. Install the return filter.

9. Let the engine run and operate the boom, arm, bucket
and boom swing device. Then bring the boom to the
highest position, pull the arm, bucket inward and boom
swing left end.

10.Fill oil again up to the center of the gauge.

Hydraulic oil
volumes

Hydraulic tank 14.2 L
Whole oil volumes 27 L

11.Install the hydraulic tank cover and tighten the oil filling
plug.

53REGULAR CHECKS AND MAINTENANCE WORK

EVERY 1000 SERVICE HOURS OR ONCE A
YEAR

BReplacing Air Filter Element

Open the engine cover and remove the dust cover.
Take out outer element and inner element (safety
element).
Replace inner and outer element.
Installing the dust cover, be sure to its TOP mark (arrow)
faces upward.

EVERY 1500 SERVICE HOURS

BChecking Fuel Injection Nozzle(Injection

Pressure)

Consult your local KUBOTA Dealer for this service.

EVERY 2000 SERVICE HOURS

Do all 50, 200, 500 and 1000 hour servicing at the same
time.

BChanging Front Idler and Track Roller Oil

A Contact your KUBOTA dealer for details.

BChecking Alternator and Starter Motor

A Contact your KUBOTA dealer for details.

EVERY 3000 SERVICE HOURS

BChecking Injection Pump

Consult your local KUBOTA Dealer for this service.

(1) Outer element
(2) Inner element (Safety element)
(3) Case
(4) Dust cover
(5) Clamps

A Shorten the replacement period if using in a place

exposed to lots of dust or sandy areas.

ANNUAL SERVICE

BElectrical Wiring and Fuses

Check the terminals periodically for proper connections.
Loose wiring or damaged cables can cause improper
functioning or short circuiting of the electrical system.
Check wiring and replace damaged components
immediately. If a fuse blows out soon after having been
replaced, contact your nearest KUBOTA dealer. Do not
use a fuse other than specified.

REGULAR CHECKS AND MAINTENANCE WORK54

BIENNIAL SERVICING

To avoid personal injury:
A Do not loosen the radiator cap before the

radiator has cooled down sufficiently. Then
only loosen the cap and allow enough time for
the pressure in the system to be released. Now
remove the cap completely.

BReplacing of Radiator Hoses

Replace radiator hoses and hose clamps every two years.
If the hoses are swollen, hard or cracked, they must be
replaced earlier.

BChanging Radiator Coolant

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

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

A If anti-freeze has been swallowed, seek medical

attention at once.

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 ground s, down a

drain, or into any water source.

A Also, observe the relevant environmental

protection regulations when disposing of anti­freeze.

A Anti-freeze if swallowed is poisonous to

people, animals and birds.

(1) Radiator hoses
(2) Hose clamps

Stop the engine then remove the key and wait until
machine has cooled down completely.

1. Open the drain plug on the bottom of the radiator and
drain coolant completely, Should a reserve tank be
equipped, disconnect the line from the tank floor and
then open the drain cock.

2. To clean, rinse the radiator with water.

3. Close the drain plug and fill the radiator and the
reserve tank with coolant fluid. Let the engine idle for
about 5 min., stop the engine and remove the key then
check the coolant level.

4. The machine has been shipped filled with 50% anti­freeze solution.

55REGULAR CHECKS AND MAINTENANCE WORK

(1) Reserve tank (A) "FULL"

(B) "LOW"

Radiator approx. : 2.7 L

Reserve tank approx. 0.56 L

(1) Drain plug

(1) Radiator cap

A Do not operate the engine without coolant.
A To fill the radiator system and the reserve tank, use

fresh water and anti-freeze fluid.

A When the anti-freeze is mixed with water, the anti-

freeze mixing ratio must be less than 50%

A Tighten the radiator cap properly. If the cap is loosely

or not properly fitted, overheating of the engine can
result due to coolant fluid loss.

BReplacing Fuel Hose

Replace the hoses and clamps.
(Contact your local KUBOTA dealer for details.)

BReplacing Intake Air line

Replace the hoses and clamps, if necessary.
(Contact your local KUBOTA dealer for details.)

56 OTHER ADJUSTMENTS AND REPLACEMENTS

OTHER ADJUSTMENTS AND REPLACEMENTS

PURGING FUEL SYSTEM

1. Fill up the excavator with fuel.

2. Turn the starter key to the position "RUN".

3. The air in the fuel system will automatically be purged
within one minute.

(1) Starter switch (A) "STOP"

(B) "RUN"
(C) "STAR T "

A If the purging was insufficient, the engine stops

operating after starting. In this case repeat steps (2) to
(3) again.

2. Tension the track in the lifted position, so that the
distance "A" (clearance between the center track roller
and the track surface of the track) is 10 to 15 mm (see
illustration) In this case, the track seam is positioned
on the top center between the idler and the sprocket.

To avoid serious injury or death:
A Do not work under the machine in this

condition.

A For your safety do not rely on hydraulically

supported devices, they may leak down and
suddenly drop or be accidentally lowered.

A When lifting the machine itself with an

attachment, place a safety block or safety post
to prevent the machine from turning over. Keep
the lock lever (unload lever) in the "LOCK"
position.

ADJUSTMENT OF TRACKS

BRubber Tracks

Tension the tracks as specified:

1. Apply grease (2) to the grease nipple (1).

(1) Grease nipple
(2) Grease gun (Option)

[KX016-4]

(1) Seam (Mark " ") (A) "10 to 15 mm"

[KX018-4]

57OTHER ADJUSTMENTS AND REPLACEMENTS

BSpecial Information when Using Rubber

Tracks

1. When turning, make a slow swing turn. Avoid spin
turns to reduce lug wear and entry of dirt.

2. The relief valve may be activated if too much dirt and
sand clog the tracks. In this case move the machine for
a short distance straight backwards to let the earth and
sand fall off, then a turn can be made.

3. Avoid using rubber track on riverbeds, stony
underground, ferro-concrete and on iron plates. The
rubber can damage as well as increase wear on the
tracks.

(1) Seam (Mark " ") (A) "10 to 15 mm"

A Track seam

The ends of the rubber track are joined with a seam.
When adjusting the tracks, the seam must be
positioned on the top midway between the idler and
the sprocket. By machines equipped with an upper
roller, the seam mark should be positioned over the
upper roller.
If the seam is positioned incorrectly, the tracks will be
tensioned to loosely, and a further readjustment wi ll be
necessary.

A Rotate the track after adjustment one to two times to

check the tension. To loosen the rubber tracks, follow
the procedure below.

A Additional following points are to be observed when

adjusting rubber tracks.
(1) If the track loosen more than 25 mm (1.0 in.),

readjust them.

(2) Check track tension 30 hours after initial use and

readjust if necessary. Check and adjust thereafter
every 50 service hours.

C To loosen the tracks, follow following procedure:

To avoid personal injury:
A Do not loosen the grease nipple completely or

too quickly. Otherwise grease under high
pressure in the tension cylinder could squirt
out.

A Make sure that no obstacles, such as stones

are caught in the track. Remove such obstacles
before adjusting the track tension.

1. Loosen the bolt of the cover and remove the cover.

2. Using a socket wrench, loosen the grease nipple a few
turns.

3. When grease oozes out from the thread, rotate the
track and loosen the track in the lifted position.

After adjustment is completed:

Using the socket wrench, tighten the grease nipple.
Tightening torque must be between 1000 to 1100 kgf-cm
(72 to 80 ft-lbs).

A If the tracks are too tight, wear is increased.
A If the tracks are too loose, the track pads may collide

with the sprocket, wear is increased.
The track may dislocate or come off.

A Clean the track after every use.
A Should the track tension be high due to sticking mud,

lift the track with the help of the boom, arm and bucket,
idle the engine and remove mud from the track,
especially from the openings of the link plate carefully.

OTHER ADJUSTMENTS AND REPLACEMENTS58

CHANGING THE BUCKET

To avoid personal injury:
A When the coupling pins are removed or

installed, chips may come off. Always use
gloves, goggles and a helmet.

A When the change of the equipment must be

performed with the engine running, always
work as a 2-person team.
One person sits in the operator's seat and the
other works on the machine.

A Do not use your fingers to center the holes,

since they may be injured or even cut in case of
sudden or uncontrolled movements.

A Read the manual of the attachment to do a

correct operation safely when other
attachments are installed instead of Kubota
specified bucket.

FUSES

To avoid personal injury:
A When changing fuse, stop the engin e and t urn

the key in position "STOP".

BReplacing Fuses

1. Remove the cover of the fuse box.

2. Replace the burnt out fuse with a fuse having the same
capacity.

BFuse Capacities and Circuits

(1) Fuse box

(1) Fuse box

1 Blow Motor 10 Lock Lever
2 Radio (AC) 11 Fuel Pump
3 Wiper / Washer 12 ECU (AC)
4 Electrical Outlet 13 Relay Source
5 Engine Stop 14 Alternator
6 ECU (+B) 15 Room Light
7 Horn Switch 16 Beacon
8 Meter (+B) 17 Work Light
9 Starter 18 Horn

59OTHER ADJUSTMENTS AND REPLACEMENTS

BAuxiliary Electric

Max power is less than 120 W.

(1) Auxiliary electric A

A If the machine keeps idling on the reserve power, the

battery gets discharged. Raise the engine rpm.

BSlow Blow Fuse

Slow blow fuse is provided to protect the electrical circuits.
If the fusible link is blown, check the electrical circuits for
trouble and then replace with a new compatible s low blow
fuse.

(1) Slow blow fuse (50 A)
(2) Slow blow fuse (60 A)

60 TROUBLESHOOTING

TROUBLESHOOTING

If the mini-excavator does not show the desired performance, or when trouble arises, refer to the table below and undertake
appropriate measures.

61TROUBLESHOOTING

62 TROUBLESHOOTING

KUBOTA I.C.S. NAVIGATION LIST OF MESSAGES

If an error occurs with the machine, one of the following messages appears in the LCD display.
In case of a trouble, immediately contact your local dealer for inspection and repair.

LCD display

CAN system error

1

Feed fuel

2

LED Problem / Error Solution #1 Solution #2

The Controller Area
Network (CAN) has
developed a fault.
Measured v alues may
be incorrect and
switches may not

The machine can be
started and driven.
Do not perform any
work with the
machine.

function.
This message

appears when the fuel
level is low and

--­prompts the operator
to refuel.

Inform your
KUBOTA dealer
immediately.

Refuel the
excavator.

Periodic check soon

3

(notice)

Periodic check passed

4

(warning)

Warning temperature

rising

5

6
7

This message
appears 10 hours
before the periodic
check interval.
This message means
that the regular
service is due shortly.

Operate the
machine as usual.

Ask your
KUBOTA dealer
about the
relevant parts.
Run the
maintenance
procedure.

Ask your
KUBOTA dealer
about the
relevant parts.
Run the
maintenance

This message means
that the regular
service is due.

The machine can be
operated but service
must be carried out
urgently.

procedure.

Operate the
The temperature of
the coolant is higher
than normal.

machine only with

reduced loads until

the temperature is

---

normal again.

--- --- --- --- ---

--- --- --- --- ---

8

--- --- --- --- ---

63TROUBLESHOOTING

LED Display

Clock setting re quest

9

10

Raise the control le ve r

11

Pull out the key

12

Lower the cont rol lever

13

Oil pressure too low

14

LED Problem / Error Solution #1 Solution #2

Power was interrupted
and the clock now has
to be set again.

In order to set the

clock, press the user

setting switch.

--- --- --- --- ---

lock

lock

This message
indicates a step in a

(yellow)

procedure.

The key must be
pulled out.

This message
indicates a step in a

(yellow)

procedure.

(red)+The engine oil

pressure is too lo w.

Raise the lock lever

(unload lever); the

indicator goes out.

Pull out the key. ---

Lower the lock lever

(unload lever); the

indicator goes out.

Stop the engine

immediately. The

engine may have

developed a fault.

Inform your
KUBOTA dealer
immediately.

---

---

---

Overheat

15

Charging system error

16

The machine is
overheated and must
cool off by idling.

(red)+The charging system

has developed a fault.

Allow the machine to

cool off by idling. Do

not switch the

engine off as the

coolant could then

boil over.

Check the V-belt.

When the V-belt is

OK, let the engine

run until the in dicator

goes out.

Clean the radiator
and check the
coolant. Refill the
radiator with
coolant by its
boiled-over
amount. Unclog
the radiator and
other components
before use again.
Check also the
hydraulic system
for oil leak and
other troubles.
If an oil leak is
found,
immediately
contact your local
dealer for repair.

If the indicator
does not go out,
inform your
KUBOTA dealer
immediately.

64 TROUBLESHOOTING

LCD Display LED Problem / Error Solution #1 Solution #2

Fuel sensor error

17

Water temperatu re sensor

error

18

19

--- --- --- --- ---

Lever lock system error

20

Travel 2 speed system

error

21

(red)

(red)

(red)

(red)

The fuel sensor has
developed a fault; the
fuel gauge does not
appear in the display.

The coolant
temperature sensor
has developed a fault;
the coolant
temperature gauge
does not appear in the
display.

The electrical system
in the lock lever
(unload lever) has
developed a fault.

The electrical system
in the travel s peed h as
developed a fault.

Press the display

selector switch to

return to the default

display.

Press the display

selector switch to

return to the default

display. The

functions of the

machine are stable

but overheating

cannot be excluded.

The engine can be

started but the

machine cannot be

set in motion.

The machine can

only be set in motion

at low speed.

Inform your
KUBOTA dealer
immediately.

Inform your
KUBOTA dealer
immediately.

Inform your
KUBOTA dealer
immediately.

Inform your
KUBOTA dealer
immediately.

22
23
24

--- --- --- --- ---

--- --- --- --- ---

--- --- --- --- ---

25

LCD Display LED Problem / Error Solution #1 Solution #2

This is a warning that a

If the indicator
lights up again
after restarting,
inform your
KUBOTA dealer
immediately.

Overvoltage

(red)

higher voltage (from a
24-V battery, for
example) is being
applied to the electric
circuit, or that there is
a problem with the

Switch the engi ne off

immediately and

check the battery

and the alternator.

Restart the engine.
alternator.

65TROUBLESHOOTING

26

--- --- --- --- ---

External 5-V system error

27

External 12-V system

error

28

Starting the engine

29

(red)

(red)

(yellow)

The 5-V sensor s upp ly
line has developed a
system fault. The main
functions are not
available.

The 12-V sensor
supply line has
developed a system
fault. The main
functions are not
available.

This message
indicates a step in a
procedure.

The machine can be

started and driven.

Do not perform any

work with the

machine.

The machine can be

started and driven.

Do not perform any

work with the

machine.

Start the engine; the

indicator goes out.

Inform your
KUBOTA dealer
immediately.

Inform your
KUBOTA dealer
immediately.

---

66 TROUBLESHOOTING

C Service hour meter

When the hour meter has counted up to the hours circled in the maintenance list below, the message appears. The
message shows up as follows.

No.

LCD

Display

Check points Measures

50 100 250 300 500 550 600 750 800 1000

1 C: 001 Engine oil

change

2 C: 002 Hydraulic oil every 1000 hrs

Hour meter indicator

Intervals

every 250 hrs

3 C: 003

Air filter

element

Outer element
Inner element every 1000 hrs

4 C: 004 Fuel filter cartridge

replace

every 1000 hrs

every 500 hrs

replace

5 C: 005 Engine oil filter every 250 hrs
6 C: 006 Drive unit oil Change every 500 hrs

7 C: 007

Hydraulic return filter

cartridge

every 500 hrs

replace

8 C: 008

Hydraulic suction filter

element

every 1000 hrs

9

10 C: 010

Front idler and track roller

oil

change every 2000 hrs

First operation

The maintenance message appears. The message shows up as follows.

(The maintenance message reappears on the hour meter designated next.)

A The maintenance message disappears automatically in about 10 seconds.
A The maintenance (periodic check) message can be preset to be made disappear manually only.

C In case the service hour meter replaced due to any trouble with it, the meter is set to "0". Contact your KUBOTA dealer

for details.

67OPERATION UNDER COLD WEATHER CONDITIONS

OPERATION UNDER COLD WEATHER CONDITIONS

PREPARATION FOR OPERATION IN COLD
WEATHER

1. Replace engine oil and hydraulic oil with those of
viscosities suitable for cold weather.

2. In cold weather, battery power drops, and the battery
fluid may freeze if the battery is not sufficiently
charged. To prevent the battery fluid from freezing, be
sure to keep the battery charged at least 75% or more
of its capacity after operation. To ease next starting, it
is recommended to keep the battery stored in closed
or heated rooms. If the battery fluid level is too low, do
not add after operation, but add with the engine
running before the next operation.

3. Add anti-freeze to coolant in the radiator and reserve
tank, if the ambient temperature is expected to drop
below 0 . Mixing ratio of water and anti-freeze
depends on the expected ambient temperature.

A Mixing ratio between water and anti-freeze

Ambient
Temperature ( )-5(+23)

Antifreeze % 30 3030354045 50
Water % 707070656055 50

-10

(+14)

-15

(+5)

-20
(-4)

-25

(-13)

-30

(-22)

-35

(-31)

PROCEDURE AFTE R DONE WORK

Clean the excavator thoroughly after work and wipe dry.
Otherwise mud and earth on the crawlers could freeze if
the temperature drops below the 0 (32 ) mark.
Operation of the excavator is then not possible. Store the
excavator in a dry place; if not possible, store on wooden
planks or on mats. If the excavator is kept on damp or
muddy ground, the crawlers could freeze overnight.
Operation of the excavator is then not possible.
Furthermore the reduction gear may be damaged.
Additionally, the piston rods of the hydraulic cylinders
must be rubbed dry. Otherwise severe damage could
occur if dirty water seeps through the seals.

A Use permanent anti-freeze or long-life coolant.
A Drain the coolant completely and clean the radiator

inside then fill with the water and anti-freeze mixture.

A As the anti-freeze also acts as an anti-corrosive, it is

not necessary to add an additive to the water and anti­freeze mixture.

A See "Checking Coolant Level" under "DAILY

CHECKS" in "MAINTENANCE" for radiator fill
volumes.

68 LONG STORAGE

LONG STORAGE

To avoid personal injury:

A Do not clean the excavator with the engine running.
A To avoid the danger of exhaust fume poisoning, do not operate the engi ne in a closed building without

proper ventilation.

A When storing, remove the key from the starter switch to avoid unautho rized persons from operating the

excavator and getting injured.

A Bring the excavator on a firm, flat, and level surface. Lower the attachments and dozer blade on the ground.

B Should the Excavator be Stored for a Longer Period of Time, Observe Following

Procedures:

1. The whole excavator should be cleaned thoroughly and in all cases stored indoors. If the excavator has to be kept
outdoors, lay out wooden planks on even ground, place the excavator on the planks and cover completely.

2. Do an oil change and grease the excavator.

3. Heavily grease the visible section of the cylinder rods.

4. Remove the battery and store indoors.

5. If it is expected that the temperature will sink below the 0 (32 ) mark, add anti-freeze or drain coolant completely.

A Wash the excavator after stopping the engine.

If you wash the excavator while running the engine, splashing water gets into the air cleaner through its intake and
cause engine damage.
Carefully, wash and do not splash water over the air cleaner while the engine is running.

B Observe Following Procedures when the Machine is to be Operated after Long Term

Storage.

1. Wipe off the grease from the hydraulic cylinder rods.

2. Turn on the engine and operate the attachments and the drive mechanisms under no load in order to circulate the
hydraulic oil.
(If the machine is stored for longer than one month, do steps 1 and 2 once every month.)

Periodic replacement of important component parts

To ensure safety in operation, you are strongly requested to inspect and service the machine at regular intervals. For added
safety, ask your KUBOTA dealer to replace the following important component parts.
These parts are prone to degradation in material or subject to wear and tear with time. It i s difficult to judge how much they
have been affected at regular inspection. It is therefore necessary to replace them with new ones, whether wear is visible
or not after a specified time of use.
If any of them is found to be worn before the specified use, they must be repaired or replaced the same as other parts.
If any of the hose clamps are found deformed or cracked, the hose clamps must also be replaced.
For the hydraulic hoses other than the ones to be replaced periodically, inspect them for the following points. If found l oose
or very worn, tighten and / or replace the hose.
When replacing the hydraulic hoses, change their O rings and sealing components with new ones.
For replacement of the important parts, contact your KUBOTA dealer.

A At the following periodic inspections, check the fuel hoses and hydraulic hoses as well.

Inspection Interval Check points

Daily Checks Oil lea k at fu el and hydraulic hose conne ct i ons and points

Every month

Every year

Oil leak at fuel and hydra ulic hos e connections and points
Damages at fuel and hydraulic hose (cracks, chaf i ng )

Oil leak at fuel and hydra ulic hos e connections and points
Interference, deformation, degradation, twist and other damages (cracks, chafing) of fuel and hydraulic
hoses

List of important component parts

No. Component parts Used place Q'ty Period

Fuel tank - Fuel filter 1

1 Fuel hose

2 Hydraulic hose (suction)

3 Hydraulic hose (delivery)

4 Hydraulic hose (Boom cylinder)

5 Hydraulic hose (Arm cylinder)

6 Hydraulic hose (B ucket cylinder)

7 Hydraulic hose (Swing cylinder) Control valve - Swing cylinder 2

8 Hydraulic hose (Dozer cylinder)

9 Hydraulic hose (A U X port)

10 Hydraulic hose (Swivel motor) Control valve - Swivel motor 2

Fuel filter - Fuel pump 1
Fuel pump - Fuel nozzle 1
Fuel nozzle - Fuel tank 2
Tank - Pipe 1
Pipe - Main pump 1
Main pump - Control valve 3
Main pump - Change valve 1
Control valve - Hose joint 2
Hose joint - Boom cylinder 2
Control valve - Hose joint 2
Hose joint - Arm cy linder 2
Control valve - Hose joint 2
Hose joint - Bucket cylinder 2

Control valve - Rotary joint 2
Rotary joint - Pipe 2
Pipe - Dozer cylinder 2
Control valve - Hose joint 2
Hose joint - Adapter 2

Every 2 years or
4000 hours

69LONG STORAGE

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

70 RECOMMENDED OILS

RECOMMENDED OILS

1. Before delivery the hydraulic oil used was an ISO 46 viscosity grade.

2. Use engine oil API service classification CD, CE or CF.

3. Use SAE 90 (API, CLA/GL5) as drive unit oil for all seasons.

Application Viscosity Shell Mobil Exxon MIL-Standard

In winter or by
low
temperatures

SAE
10W

SAE
20W

Shell Rotella T10W
Shell Rimula 10W

Shell Rotella T20W-2
Shell Rimula 20W-2

Mobil Delvac 1310

Mobil Delvac 1320

XD-3 10W
XD-3 Extra 10W

XD-3 20W-20
XD-3 Extra 20W-20

In summer or
by high ambient

Engine oilGear oilHydraulic oil

temperatures

All- Season
engine oil

In winter or by
low
temperatures

In summer or
by high ambient
temperatures

All-weather
gear oil

In winter or by
low
temperatures

SAE30Shell Rotella T30

Shell Rimula 30

SAE40Shell Rotella T40

Shell Rimula 40

SAE

50

Multi-

purpose

SAE

75

SAE

80

SAE

90

SAE

140

Multi-

purpose

ISO

32

ISO

46

Shell Rimula 50 Mobil Delvac 1350

Shell Rotella T15W-40

Shell Oil S8643

Shell Spirax HD80W

Shell Spirax HD90 Mobilube HD80W-90 MIL-L-2105C

Shell Spirax HD140 Mobilube HD80W-140 MIL-L-2105C
Shell Spirax HD80W

Shell Spirax HD85W

Shell Tellus T32 Mobil DTE-Oil 13 NUTO H32

Shell Tellus T46 Mobil DTE-Oil 15 NUTO H46

Mobil Delvac 1330

Mobil Delvac 1340

Mobilube HD80W-90

Mobilube HD80W-90

Mobilube 46 MIL-L-2105

Mobilube HD85W-140 MIL-L-2105C

Mobilube HD80W-90 GX80W-90 MIL-L-2105C

XD-3 30
XD-3 Extra 30

XD-3 40
XD-3 Extra 40

XD-3 15W-40
XD-3 Extra 15W-40

MIL-L-2104C
MIL-L-2104D

MIL-L-2105C

In summer or
by high ambient
temperatures

Grease Shell Alvania EP2 Mobilux EP2 BEACON Q2
Fuel Light oil No. 2-D (ASTM D975)

Fuel under 5 C

(+23 F)

ISO

68

Shell Tellus T68 Mobil DTE-Oil 16 NUTO H68

Light oil No. 1-D (ASTM D975)

APPENDICES

MAIN DIMENSIONS

71APPENDICES

With rubber track.

(A) (B) (C) (D) (E) (F) (G) (H) (I) (J) (K) (L)
KX016-4
KX018-4 1300 1300 3460 2380 2380 2030 1480

KX016-4
KX018-4 230 1230 1590 3860 3920

450 510

(M) (N) (O) (P) (Q) (R) (S) (T) (U)

1070 2330

1240

240

990 1070 990

230

1090 1450

mm

1240 3360 2290 2250 1900 1490

3710

3730 3790

72 LIFTING CAPACITY

LIFTING CAPACITY

1. The lifting capacities are based on ISO 10567 and do not exceed 75% of the static tilt load of the machine or 87% of
the hydraulic lifting capacity of the machine.

2. The strokes are as follows.
(1) The load point corresponds to the front pin part of the arm.
(2) The machine positions are (i) over - front (Blade down), (ii) over - front (Blade up), and (iii) over - side.
(3) The operating cylinder is the boom cylinder.

3. The bucket of the excavator, the hook, the sling and other lifting accessories are taken into consideration for the loads.

Machine conditions:
No bucket, all others according to the standard regulations.

To avoid personal injury or death:

A No loads greater than those values mentioned in the lifting capacity tables are to be lifted.
A The values mentioned in the table are valid only on even, hard grounds. W hen lifting on soft ground, the

machine can tip over due to the load being concentrated only on one side of the machine.

A The table values are calculated at the end of the arm without the bucket. In order to find the allowable loads

for machines with bucket, the bucket weight must be subtracted from the values in the table.

(1) Counter weigiht (A) (B)
KX016-4 10 kg 1.69 m 0.95 m
KX018-4 60 kg 1.69 m 1.09 m

73LIFTING CAPACITY

(Australia)

RG158-8193-1