Kubota KX080-4S2 User manual

U.S.A. :KUBOTATRACTORCORPORATION
1000 KubotaDrive,Grapevine,TX 76051
Telephone: 888 - 4 KUBOTA
Canada :KUBOTACANADALTD.
5900  14 thAvenue,Markham,Ontario,L 3 S 4 K 4 ,Canada
Telephone:(
905 ) 294 - 7477
France :KUBOTAEUROPES.A.S
19 - 25 ,RueJulesVercruysse,Z.I.BP 88 , 95101 ArɡenteuilCedex,France
Telephone:(
33 ) 1 - 3426 - 3434
Italy :KUBOTAEUROPES.A.SItalyBranch
ViaGrandi,
29  20068 PeschieraBorrome(MI)Italy
Telephone:(
39 ) 02 - 51650377
Germany :KUBOTABAUMASCHINENGmbH
Steinhauserstr,
100 , 66482 ZweibruckenRheinlandpfalzGermany
Telephone:(
49 ) 6332 - 4870100
U.K. :KUBOTA(U.K.)LTD.
DormerRoad,Thame,Oxfordshire,OX
9  3 UN,U.K.
Telephone:(
44 ) 1844 - 214500
Australia :KUBOTAAUSTRALIAPTYLTD.
25 - 29 PermasWay,Truɡanina,VIC 3029 ,Australia
Telephone:(
61 )- 3 - 9394 - 4400
Malaysia :KUBOTAMALAYSIASDN.BHD.
No.
3 JalanSepadu 25 / 123 TamanPerindustrianAxis,
Seksyen
25 , 40400 ShahAlam,SelanɡorDarulEhsanMalaysia
Telephone:(
60 ) 3 - 736 - 1388
Philippines :KUBOTAPHILIPPINES,INC.
232 QuirinoHiɡhway,Baesa,QuezonCity 1106 ,Philippines
Telephone:(
63 ) 2 - 422 - 3500
Taiwan :SHINTAIWANAGRICULTURALMACHINERYCO.,LTD.
16 ,Fenɡpinɡ 2 ndRd,TaliaoShianɡKaohsiunɡ 83107 ,TaiwanR.O.C.
Telephone:(
886 ) 7 - 702 - 2333
Thailand :SIAMKUBOTACORPORATIONCO.,LTD.
101 / 19 - 24 Moo 20 ,NavanakornIndustrialEstate,TambonKhlonɡnuenɡ,AmphurKhlonɡluanɡ,
Pathumthani
12120 ,THAILAND
Telephone:(
66 ) 2 - 909 - 0300
Japan :KUBOTACorporation
Farm&IndustrialMachineryInternationalOperationsHeadquarters
2 - 47 ,Shikitsuhiɡashi 1 -chome,Naniwa-ku,Osaka,Japan 556 - 8601
1910-0308
READ AND SAVE THIS MANUAL
KUBOTA
EXCAVATOR
OPERATOR'S MANUAL
English(U.S.A.)
Code No. RD848-8121-1
©KUBOTA Corporation 2019
1BAAABTAP0230
MODEL KX080-4S2
KX080
-
4S2
PRINTED IN JAPAN

1910-0308
KX080-4S2
English(U.S.A.)
AX. K. 2-2. 3. K
Abbreviations Definitions
AFS
AI
API
ASTM
CECE
CRS
DIN
DOC
DPF
EGR
EN
FRONT
Hi
ISO
JIS
L
L/min
Lo
MAF
MIL
OPG
OSHA
P/L
PCV
ROPS
rpm
SAE
TPSS
Air Flow Sensor
Auto Idle
American Petroleum Institute
American Society for Testing and Materials, USA
Committee for European Construction Equipment
Common Rail System
Deutsches Institut für Normung, GERMANY
(German Institute for Standardization)
Diesel Oxidation Catalyst
Diesel Particulate Filter
Exhaust Gas Re-circulation
European Standard
"Front" means the direction towards the boom and dozer
High speed
International Organization for Standardization
Japanese Industry Standard
Volume (Liter)
Liter per minute
Low speed
Mass Air Flow
Military Standard
Operator Protective Guards
Occupational Safety and Health Administration
Pressure Limiter
Positive Crankcase Ventilation
Roll-Over Protective Structure
Revolutions Per Minute
Society of Automotive Engineers, USA
Two Pattern Selection System
Canadian Electromagnetic Compatibility (EMC):
This machine complies with Industry Canada ICES-002.
WARNING
California Proposition 65
Engine exhaust, some of its constituents,
certain vehicle components and fluids,
contain or emit chemicals known to the
State of California to cause cancer and birth
defects or other reproductive harm.
ABBREVIATION LIST

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.
Safety alert Symbol
Warning lamp "Fuel level too low"
System lamp
Warning lamp "Battery charge"
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 up
Boom down
Arm up
Arm crowd
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
DPF Standby / Regeneration
Engine Idle up
Inhibit DPF Regeneration

FOREWORD
SAFETY FIRST
IMPORTANT :
NOTE : Gives helpful information.
DANGER :
WARNING :
CAUTION :
Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in minor or moderate injury.
Indicates that equipment or property damage could result if
instructions are not followed.
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 fine materials and
under a rigid quality control system. 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 quickly as
possible every advance in our research. The immediate use of new techniques in
the manufacture of products may cause some small parts of this manual to be
outdated. KUBOTA distributors and dealers will have the most up-to-date
information. Please do not hesitate to consult with them.
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.

CONTENTS
SAFE OPERATION ............................................................................................. -1
DEALER SERVICE...................................................................................................... 1
TECHNICAL DATA...................................................................................................... 3
DESCRIPTION OF MACHINE PARTS........................................................................ 4
INSTRUMENT PANEL AND CONTROL ELEMENTS................................................. 5
CHECKS BEFORE START......................................................................................... 7
DAILY CHECKS....................................................................................................... 7
CHECKING THE DEVICES..................................................................................... 7
Starter Switch ...................................................................................................................7
Display Selector Switch....................................................................................................8
LCD Display for Normal Operation...................................................................................8
Warning Lamp ................................................................................................................10
LCD Display for Warning................................................................................................11
Setting the Clock.............................................................................................................12
Reordering the year/month/day and Changing the AM/PM System to the 24-hour One14
Log Record.....................................................................................................................14
Periodic Check................................................................................................................15
If All the Check Points are not Displayed at a Glance on a Single Screen.....................16
When the Check-up is Completed..................................................................................18
Horn Switch ....................................................................................................................18
Light Switch ....................................................................................................................18
AUX Port Flow Rate Limit Switch ...................................................................................18
Auto Idle Control Switch .................................................................................................19
Throttle Potentiometer....................................................................................................19
Travel Speed Switch.......................................................................................................19
Inhibit Diesel Particulate Filter (DPF) Regeneration Switch ...........................................20
Beacon Light Switch.......................................................................................................20
CAB TYPE MACHINES ......................................................................................... 21
Wiper/Washer Switch .....................................................................................................21
Interior Lamp...................................................................................................................21
Heater Switch .................................................................................................................21
Opening/Closing of CAB Door........................................................................................22
Opening/Closing of Front CAB Window..........................................................................22
Opening/Closing of Side CAB Window...........................................................................23
Emergency Hammer.......................................................................................................23
AIR CONDITIONER............................................................................................... 23
Air Flow...........................................................................................................................23
Air Control Vent ..............................................................................................................24
Control Panel..................................................................................................................24
Operation........................................................................................................................24
HANDLING THE SAFETY DEVICES..................................................................... 25
Pilot Control Lock Lever..................................................................................................25
OPERATION OF THE ENGINE................................................................................. 26
STARTING THE ENGINE...................................................................................... 26

CONTENTS
STARTING THE ENGINE UNDER COLD CONDITIONS...................................... 28
STARTING WITH AN AUXILIARY BATTERY ....................................................... 28
Observe Following Guidelines when Starting with an Auxiliary Battery..........................28
CHECK POINTS AFTER STARTING THE ENGINE............................................. 29
STOPPING THE ENGINE...................................................................................... 30
Engine Stop Button.........................................................................................................30
Precautions in case of Overheat.....................................................................................30
DPF Regeneration..........................................................................................................30
EXCAVATOR OPERATION ...................................................................................... 31
RUNNING-IN OF THE NEW EXCAVATOR........................................................... 31
Do not Work with Full Engine Rpm's or Full Loads during the First 50 Working Hours..31
Oil Change in the Run-in Stage......................................................................................31
Adjusting the Operator's Seat.........................................................................................31
Seat Belt.........................................................................................................................32
STARTING............................................................................................................. 32
Pilot Control Lock Lever..................................................................................................32
DRIVING................................................................................................................ 33
Drive Levers (Right,Left).................................................................................................34
TURNS................................................................................................................... 34
Pivot Turn .......................................................................................................................34
Spin Turn........................................................................................................................35
UP AND DOWNHILL DRIVING.............................................................................. 36
PARKING ON A SLOPE........................................................................................ 36
OPERATION OF THE DOZER.............................................................................. 36
TWO PATTERN SELECTION SYSTEM (TPSS)................................................... 37
Pattern Change...............................................................................................................37
OPERATION OF THE BOOM................................................................................ 38
OPERATION OF THE ARM................................................................................... 38
OPERATION OF THE BUCKET............................................................................ 39
UNIT SWING AND BOOM SWING OPERATION.................................................. 39
Unit Swing Operation......................................................................................................39
Boom Swing Operation...................................................................................................39
AUXILIARY PORT OPERATION........................................................................... 40
Selecting the Action Modes............................................................................................40
AUX Port Handling Procedure........................................................................................41
Setting the Maximum Flow Volume................................................................................43
How to Resume the AUX Setting While Processing the DPF Regeneration..................48
HOW TO RELEASE PRESSURE TRAPPED IN THE HYDRAULIC SYSTEM...... 48
ANGLE BLADE OPERATION................................................................................ 49
1-way or 2-way CIRCUIT SELECTION VALVE OPERATION............................... 50
BOOM LOWERING VALVE................................................................................... 51
AUTO IDLE (AI) OPERATION............................................................................... 51
ANTI-THEFT DEVICE (for Canada only, if equipped) ........................................... 52
Anti-Theft Device............................................................................................................52
IMPORTANT INFORMATION ON EXCAVATOR OPERATION............................ 55
TRANSPORTING THE EXCAVATOR ON A VEHICLE............................................. 56
LIFTING OF THE EXCAVATOR................................................................................ 58
MAINTENANCE......................................................................................................... 60

CONTENTS
MAINTENANCE INTERVALS................................................................................ 60
OPENING AND CLOSING OF COVERS............................................................... 65
Opening/Closing of the Fuel Tank Cover........................................................................65
Opening/Closing of the Engine Hood.............................................................................65
Opening/Closing of the Side Cover................................................................................65
Where to store the Tool..................................................................................................66
Cup Holder......................................................................................................................66
Where to store the Grease Gun......................................................................................66
Where to keep Operator's Manual..................................................................................66
Utility Box........................................................................................................................67
Where to Store the Fire Extinguisher..............................................................................67
DAILY CHECKS..................................................................................................... 67
Checking Coolant Level..................................................................................................67
Checking Fuel Level.......................................................................................................68
Checking Engine Oil Level..............................................................................................68
Checking Hydraulic Oil Level..........................................................................................69
Checking V-belt ..............................................................................................................69
Checking Radiator and Oil Cooler..................................................................................70
Checking Washer Liquid.................................................................................................70
Checking and Cleaning Engine and Electrical Wiring.....................................................70
Washing Whole Machine................................................................................................70
Greasing Bucket Pin and Bucket Link Pin/ Angle Pin and Angle Cylinder Boss ............71
Cleaning Evacuator Valve ..............................................................................................71
Checking Diesel Particulate Filter (DPF) Muffler............................................................71
REGULAR CHECKS AND MAINTENANCE WORK ................................................. 72
EVERY 50 SERVICE HOURS............................................................................... 72
Draining the Water from the Fuel Tank...........................................................................72
Draining Water Separator...............................................................................................72
Battery ............................................................................................................................73
Battery Charging.............................................................................................................74
Greasing Swing Bearing Teeth.......................................................................................74
EVERY 100 SERVICE HOURS............................................................................. 74
Greasing Boom Swing Fulcrum......................................................................................74
EVERY 200 SERVICE HOURS............................................................................. 75
Adjusting V-belt Tension.................................................................................................75
Checking Radiator Hoses and Clamps...........................................................................76
Grease Swing Ball Bearing.............................................................................................76
Inspection and Cleaning Air Filter Element.....................................................................77
Air Filter Maintenance.....................................................................................................77
Checking Fuel Line and Intake Air Line..........................................................................78
AIR CONDITIONER............................................................................................... 78
Cleaning Air Filter...........................................................................................................78
Checking Air-Conditioner Condenser.............................................................................79
EVERY 250 SERVICE HOURS............................................................................. 79
Greasing Front Attachments (without Bucket Pin and Boom Swing Fulcrum)................79
EVERY 500 SERVICE HOURS............................................................................. 80
Changing Engine Oil (Change the engine oil every 500 hours, or every 1 year in the case
that service hour is less than 500 hours)........................................................................80
Replacing Engine Oil Filter Cartridge (Replace the engine oil filter cartridge every 500
hours,or every 1 year in the case that service hour is less than 500 hours)...................81
Drive unit Oil Change(First Oil Change of the 50 hours)................................................81

CONTENTS
Replacing Fuel Filter Cartridge.......................................................................................82
Replacing Hydraulic Return Filter Cartridge(first replacement after 250 service hours).82
Replacing Water Separator Filter Element.....................................................................83
EVERY 1000 SERVICE HOURS........................................................................... 84
Replacing the Hydraulic Pilot Filter Element...................................................................84
Hydraulic Oil Change (Including Replacing of the Suction Filter in the Hydraulic Tank) 84
Hydraulic Oil Check with Hydraulic Hammers................................................................85
Checking Engine Valve Clearance.................................................................................86
EVERY 1000 SERVICE HOURS OR ONCE A YEAR........................................... 86
Replacing Air Filter Element...........................................................................................86
EVERY 1500 SERVICE HOURS........................................................................... 86
Checking Injector Tip......................................................................................................86
Replacing Oil Separator Element ...................................................................................86
Checking EGR Cooler ....................................................................................................87
EVERY 2000 SERVICE HOURS........................................................................... 87
Changing Front Idler and Track Roller Oil......................................................................87
Checking the Alternator and Starter Motor.....................................................................87
EVERY 3000 SERVICE HOURS........................................................................... 87
Checking EGR System...................................................................................................87
Checking Turbocharger..................................................................................................87
ANNUAL SERVICING............................................................................................ 87
Electrical Wiring and Fuses............................................................................................87
Checking the Electrical Circuit........................................................................................87
Checking Air-Conditioner Pipes and Hoses....................................................................87
Checking Boost Sensor and AFS (Air Flow Sensor) ......................................................87
Checking Condition of Diesel Particulate Filter (DPF) Muffler........................................87
Checking Diesel Particulate Filter (DPF) Differential Pressure Sensor and Piping for Gas
Leak................................................................................................................................87
Checking Diesel Particulate Filter (DPF) Exhaust Gas Temperature Sensor.................87
Checking EGR Piping for Gas Leak ...............................................................................87
BIENNIAL SERVICING.......................................................................................... 88
Replacing Air-Conditioner Pipes and Hoses...................................................................88
Replacement of Radiator Hoses and Hose Clamps.......................................................88
Changing Radiator Coolant ............................................................................................88
Replacing Fuel Hoses and Hose Clamps.......................................................................89
Replacing Intake Air line.................................................................................................90
Replacement of Oil Separator Rubber Hose..................................................................90
Replacement of Diesel Particulate Filter (DPF) Differential Pressure Sensor Rubber
Piping (Front and Back)..................................................................................................90
Replacement of Suction pipe downstream the AFS (Air Flow Sensor) ..........................90
Replacement of Boost Sensor Pressure Rubber Piping.................................................90
Replacement of EGR Cooler Hose.................................................................................90
SERVICING AS REQUIRED.................................................................................. 90
Checking Amount of Refrigerant (gas) ...........................................................................90
Cleaning Diesel Particulate Filter (DPF).........................................................................91
Draining the fuel filter......................................................................................................91
OTHER ADJUSTMENTS AND REPLACEMENTS.................................................... 92
PURGING OF THE FUEL SYSTEM...................................................................... 92
ADJUSTMENT OF TRACKS ................................................................................. 92
Special Information when Using Rubber Tracks.............................................................93
CHANGING THE BUCKET.................................................................................... 94

CONTENTS
FUSES................................................................................................................... 94
Replacing Fuses.............................................................................................................94
Fuse Capacities and Circuits..........................................................................................94
Auxiliary Electric .............................................................................................................95
Slow Blow Fuse..............................................................................................................95
Electric Fuse...................................................................................................................95
TROUBLESHOOTING............................................................................................... 96
OPERATION UNDER COLD WEATHER CONDITIONS .......................................... 98
PREPARATION FOR OPERATION IN COLD WEATHER.................................... 98
PROCEDURE AFTER COMPLETING WORK ...................................................... 98
LONG STORAGE...................................................................................................... 99
RECOMMENDED OILS........................................................................................... 101
BIODIESEL FUEL (BDF) ..................................................................................... 103
APPENDICES.......................................................................................................... 105
MAIN DIMENSIONS ............................................................................................ 105
LIFTING CAPACITY................................................................................................ 106
LIST OF SCREENS................................................................................................. 108
LIST OF NORMAL SCREENS............................................................................. 108
NAVIGATION LIST OF SCREENS...................................................................... 109
AUTOMATIC DIESEL PARTICULATE FILTER (DPF) REGENERATION........... 117
LOCKING AND RELEASING THE DIESEL PARTICULATE FILTER (DPF)
REGENERATION ................................................................................................ 119

-1SAFE OPERATION
SAFE 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. Know your equipment and its limitations. Read and
understand this entire manual before attempting to
start and operate the excavator.
2. Pay special attention to and obey the danger, warning
and caution labels on the machine.
3. For your safety, a ROPS/OPG (Top Guard Level I)
with a seat belt is installed by KUBOTA.
AROPS: Roll-Over Protective Structure
AOPG (Top Guard Level I): Operator Protective
Guards of Top Guard Level I
Always use the seat belt when the machine is
equipped with a ROPS/OPG (Top Guard Level I) 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 (Top Guard Level I) 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 (Top Guard Level I)
is loosened or removed for any reason, make sure all
parts are reinstalled correctly. Tighten mounting bolts
to proper torque.
4. ROPS meets requirements of ISO 12117-2.
OPG (Top Guard Level I) meets requirements of
OSHA 1926 1003/ISO 10262.
5. The seat belt must be inspected regularly and
replaced if frayed or damaged.
6. Always sit in the operator's seat when starting engine
or operating levers or controls.
7. 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.
8. Do not operate the excavator while under the influence
of alcohol, medication, controlled substances or while
fatigued.
1. BEFORE OPERATION
(1) Seat belt
(1) Pattern selector lever
(Two Pattern Selection System:TPSS) (A) "Pattern A" (B) "Pattern B"

SAFE OPERATION-2
9. Check the surroundings carefully before using the
excavator or when attachments are being attached.
APay attention to the overhead clearance with electric
wires.
ACheck for pipes and buried cables before digging. Use
your local utility service to check for such items (if
available).
ACheck for hidden holes, obstacles, soft underground,
and overhangs.
ADo not allow any persons within the working range of
the excavator during operation.
10.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.
11.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.
12.Do not allow passengers to ride on any part of the
excavator at any time. The operator must remain in the
excavator seat during operation.
13.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.
14.Keep your excavator clean. Heavy soiling, grease,
dust and grass can cause fires, accidents or injuries.
15.Use only KUBOTA authorized attachments.
16.Before starting the excavator, be absolutely sure that
the excavator has been filled with fuel, lubricated,
greased and undergone all necessary maintenance.
17.Do not modify the excavator, as such could lead to
unforeseen safety problems.
18.Do not operate a hydraulic hammer on anything that is
above the operator's seat level as objects may fall into
the operator station.
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.
The top guard and front guard are available for this
machine. Consult your KUBOTA dealer for details.
(1) Helmet
(2) Clothing fit for work
(3) Tight seams
(4) Good grip footwear
(5) Well fitting cuffs
(6) Working gloves
(7) Soft hat
(8) Towel
(9) Baggy trousers
(10) Loose cuffs of the shirt
(11) Baggy shirt
(12) Sandals or open-toed shoes

-3SAFE OPERATION
Operator safety is a priority. Safe operation, specifically
with respect to overturning hazards, entails understanding
the equipment and environmental conditions at the time of
use. Some prohibited uses which can affect overturning
hazards include traveling and turning with implements
and loads carried too high etc. This manual sets forth
some of the obvious risks, but the list is not, and cannot
be, exhaustive. It is the operator's responsibility to be alert
for any equipment or environmental condition that could
compromise safe operation.
CStarting
1. Mount and dismount 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 "LOCKED" position and all control
levers and pedals are in their neutral positions and the
seat belt is fastened correctly.
Before starting the engine, make sure that the control
levers, travel lever, pedals and other control elements
are not stuck and can be moved smoothly.
If stuck, for example, a levermay fail to return,possibly
putting you in danger.
If anything wrong is found, immediately pinpoint the
cause and correct it.
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.
CWorking
1. Do not operate or idle engine in a non-ventilated area.
Carbon monoxide gas is colorless, odorless, and
deadly. If you experience the initial symptoms of low to
moderate co poisoning, which include the following,
stop operation, seek medical attention and contact
your local dealer. These symptoms are: headache,
fatigue, shortness of breath, nausea, or dizziness.
2. Keep all safety equipment and covers in place.
Replace damaged or missing safety devices.
3. When operating, keep hands and body inside of the
ROPS/ OPG (Top GuardLevel I) protectiveenvelope.
Do not touch or depress the control levers or the
pedals from outside the cab while the engine is
running.
4. 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 way due to the weight of
the excavator.
Never cross an incline horizontally or at an angle,
which can cause the machine to rollover. Approach
inclines vertically to avoid loss of control.
Avoid performing any work with the machine when it is
on an incline, which could cause it to become
unbalanced and rollover. Always take care when
moving the machine on an incline.
5. Watch where you are going at all times.
Watch for and avoid obstacles. Remain alert for trees,
wires and other obstructions.
6. Do not change direction on steep slopes, or the
excavator could tip over.
Before changing direction, beware of people in the
work area.
7. When the working light and CAB light alone do not
provide sufficient visibility, prepare additional
stationary artificial lighting and observe safety rules for
night work.
2. OPERATING THE EXCAVATOR

SAFE OPERATION-4
8. When towing the excavator or pulling a load, the load
must be less than the strength of the towing line
attached to excavator.
9. The towing eye should not be used for tie down or
lifting of the machine.
10.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.
AWhen working in groups, always let the others
know what you are going to do before you do it.
Keep others away from the machine working area.
Be sure to lock the boom swing pedal when the
boom swing function is not used.
11.For details of operating the excavator, see the
"EXCAVATOR OPERATION" section.
CSafety 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.
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 offand 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.
CAvoiding crystalline silica (quartz) dust
To avoid serious injury or death from silica dust:
Avoid exposure to dust containing crystalline silica
particles.
This dust can cause serious injury to the lungs (silicosis).
Because crystalline silica is a basic component of sand
and granite, many activities at construction sites produce
dust containing crystalline silica.
Trenching, sawing and boring of material containing
crystalline silica can produce dust containing crystalline
silica.
If dust which contains crystalline silica is present, there
are guidelines which should be followed:
1. Be aware of the potential health effects of crystalline
silica and that smoking may add to the damage.
2. Be aware of and follow OSHA (or other local, State or
Federal) guidelines for exposure to airborne crystalline
silica.
3. Know the work operations where exposure to
crystalline silica may occur.
4. Participate in air monitoring or training programs
offered by the employer.
5. Be aware of and use optional equipment controls such
as water sprays, local exhaust ventilation, and
enclosed cabs with positive pressure air conditioning if
the machine has such equipment. Otherwise
respirators shall be worn.
6. Where respirators are required, wear a respirator
approved for protection against crystalline silica
containing dust. Do not alter the respirator in any way.
Workers who use tight-fitting respirators cannot have
beards/mustaches which interfere with the respirator
seal to the face.
7. If possible, change into disposable or washable work
clothes at the work site; shower and change into clean
clothing before leaving the work site.
8. Do not eat, drink, use tobacco products, or apply
cosmetics in areas where there is dust containing
crystalline silica.
Max. drawbar pull at
coupling hook 116.9 kN (26280 lbf, 11920 kgf)
Max. vertical load at
coupling hook 12.1 kN (2720 lbf, 1234 kgf)
(1) Hook

-5SAFE OPERATION
9. Store food, drink and personal belongings away from
the work area.
10.Wash hands and face before eating, drinking,
smoking, or applying cosmetics after leaving the
exposure area.
Before leaving the machine,
APark the excavator on a firm, flat and level surface. If
this is not possible, park across the slope.
ALower the attachments and the dozer blade to the
ground.
AStop the engine.
ARelease pressure in the hydraulic system.
ALock all control levers.
ARemove the key.
ALock the cab door (if equipped).
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 on the loading bed and release
the pressure from the hydraulic system. Stop the
engine and remove the key.
After loading the excavator on the truck, block the
tracks with blocks and tie down the excavator at the
appropriate locations.
5. Avoid abrupt braking of the vehicle with the excavator
loaded. Sudden braking causes the excavator to move
and may cause a serious accident.
6. Do not use the hooks on the roof of CAB for lifting the
excavator.
3. AFTER OPERATION
(1) Pilot control lock lever (A) "UNLOCK"
(B) "LOCKED"
4. SAFE LOADING AND TRANSPORT OF
THE EXCAVATOR
(1) Chain
(2) Block

SAFE OPERATION-6
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.
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.
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.
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.
5. MAINTENANCE

-7SAFE OPERATION
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.
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 pilot control lock
lever in the "LOCKED" position.
18.Inspect ROPS / OPG (Top Guard Level I) 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.
20.Do not open a high-pressure fuel system. High-
pressure fluid remaining in fuel lines can cause
serious injury. Do not disconnect nor attempt to repair
fuel lines, sensors, or any other components between
the high- pressure fuel pump and injectors on engines
with high-pressure common rail fuel system.
21.To avoid hazardous high voltage, turn the key switch
to the "STOP" position and disconnect the battery
ground cable if it is necessary to check to repair the
computer, harness or connectors.
22.Fire prevention
Excavator and some attachments have components
that are at high temperatures under normal operating
conditions. The primary source of high temperatures is
the engine and exhaust system. The electrical system,
if damaged or incorrectly maintained, can be a source
of arcing or sparks.
The following fire prevention guidelines will help to
keep your equipment up and running efficiently and
keep the risk of fire to a minimum.
ABefore proceeding to regenerate the DPF, a warning
indicator appears on the LCD display to tell you to
increase the engine rpm to its specified level. Follow
that instruction.
AWhen the Diesel Particulate Filter (DPF) is in the
regenerating cycle, the exhaust gas and the DPF
muffler become hot. During regeneration, take into
account that the exhaust gas and muffler will be very
hot and keep the machine away from other people,
animals, plants, and flammable material. Also keep
the area near the DPF muffler clean and away from
flammable material.
AThe DPF-regeneration-caused exhaust gas may
reach temperature that adversely affect people,
animals and plants. Before this action, look around the
machine for added safety.
ADuring DPF regeneration keep the surrounding
environment in mind. Do not allow the ambient
temperature to rise excessively due to heat from the
regeneration. If such occurs activate the inhibit switch.
ABlow off all accumulated debris near hot engine
exhaust components such as turbocharger and
exhaust manifold as well as exhaust pipes and muffler
more frequently when working in severe conditions.
AClean out all accumulated flammable debris such as
leaves, straw, pine needles, branches, bark, small
wood chips and any other combustible materials from
inside the machine belly pans or lower unit structures
as well as from area in proximity to the engine.
AInspect all fuel lines and hydraulichoses for wear or for
deterioration. Replace them immediately if they begin
to leak.
AExamine electrical wiring and connectors frequently
for damage. Repair any wires that are loose or frayed
before operating the machine. Clean all electrical
connections and tighten all electrical connections as
necessary.
AInspect the exhaust system daily for any signs of
leakage. Check for broken pipes and muffler and also
for loose or missing bolts, nuts and clamps. If any
exhaust leaks or fractured parts are found, repairs
must be completed prior to operation.
AAlways keep a multipurpose fire extinguisher on or
near the machine. Be familiar with the operation of the
fire extinguisher.

SAFE OPERATION-8

-9SAFE OPERATION

SAFE OPERATION-10