Kubota U50-5 User manual

GB
COMPACT EXCAVATOR
MODEL
U50-5
OPERATING INSTRUCTIONS
W9272-8135-1 - Original - 05/2020

W9272-8135-1
05/2020
Dear valued customer,
please fill in the form below. Your information will help us to help you.
These operating instructions only apply to the KUBOTA excavator U50-5, which comply with the following
EC declaration of conformity (page 9).
In addition, the machine’s product identification number must correspond to the following scope of appli-
cation.
U50-5 - Valid as of product identification number KBCDZ47BEL3C10001
Please contact your KUBOTA dealer for any additional information or troubleshooting procedures not mentioned
in these operating instructions.
We also point out that the contents of these operating instructions are not part of an earlier existing agreement,
promise or legal relationship or amend this. All responsibilities arise of the respective sales contract containing the
complete and exclusively valid contractual warranty, refer to the "Duties, liability and warranty" section (page 13).
This documentation neither extends nor restricts the contractual warranty.
KUBOTA Baumaschinen GmbH reserves the right to change the information contained in this document with re-
spect to future technical development without altering the basic characteristics of the machines described herein
and without amending this document.
Distribution and reproduction of this documentation and disclosure of its content are not allowed unless expressly
approved by the manufacturer. Violators of the above terms are liable for compensation for damages.
Type:
Year of construction:
Product identification number:
Shipment date:

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CONTENTS
Abbreviations............................................................................................................................................. 6
General symbols ....................................................................................................................................... 7
General information ........................................................................................................................ 9
Foreword ................................................................................................................................................... 9
EC Declaration of Conformity.................................................................................................................... 9
Date of issue of the operating instructions .............................................................................................. 11
Operating personnel................................................................................................................................ 11
Location of the operating instructions...................................................................................................... 12
Spare parts.............................................................................................................................................. 12
Safety rules .................................................................................................................................... 13
Basic safety instructions.......................................................................................................................... 13
Duties, liability and warranty.................................................................................................................... 13
Safety symbols ........................................................................................................................................ 15
Approved use .......................................................................................................................................... 16
Unapproved use ...................................................................................................................................... 16
Special duties of the owner ..................................................................................................................... 17
Noise emission and vibration .................................................................................................................. 18
Noise emission................................................................................................................................... 18
Vibrations ........................................................................................................................................... 18
Safety labels on the machine .................................................................................................................. 19
Safety devices ......................................................................................................................................... 30
Locking the controls ........................................................................................................................... 30
Engine emergency stop ..................................................................................................................... 30
Protective structure cab ..................................................................................................................... 31
Emergency hammer ........................................................................................................................... 31
Pipe safety valve ................................................................................................................................ 32
Overload warning system................................................................................................................... 33
Hazards coming from the hydraulic system ............................................................................................ 34
Fire protection ......................................................................................................................................... 34
Recovery, loading and transport ................................................................................................. 37
Safety rules for recovery ......................................................................................................................... 37
Safety rules while loading with a crane ................................................................................................... 37
Safety rules for transport ......................................................................................................................... 38
Recovery ................................................................................................................................................ 39
Hoisting the machine with a crane .......................................................................................................... 39
Transport on a flat bed trailer .................................................................................................................. 41
Description of the machine .......................................................................................................... 43
Model overview ....................................................................................................................................... 43
Model U50-5....................................................................................................................................... 43
Dimensions.............................................................................................................................................. 44
Dimensions U50-5.............................................................................................................................. 44
Specifications .......................................................................................................................................... 46
Identification of the machine.................................................................................................................... 50
Product identification number............................................................................................................. 50
Engine number................................................................................................................................... 51
Standard equipment ................................................................................................................................ 51
Assembly and functions............................................................................................................... 53
Component overview............................................................................................................................... 53
Operator’s place ...................................................................................................................................... 54
Left control console ............................................................................................................................ 54
Description of the components of the left control console ............................................................... 55

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Drive levers and control pedals .......................................................................................................... 56
Drive levers and control pedals – description ..................................................................................56
Right control console .......................................................................................................................... 57
Description of the components of the right control console ............................................................. 58
Keypad switch .................................................................................................................................... 60
Keypad switch description ............................................................................................................... 60
Display................................................................................................................................................ 61
Description of the display................................................................................................................. 61
Other equipment to be found at the machine .......................................................................................... 62
Wiper/washer system....................................................................................................................... 62
Interior lighting ................................................................................................................................. 62
Fuse box .......................................................................................................................................... 63
Tool compartment ............................................................................................................................ 63
Main battery........................................................................................................................................ 63
Battery isolator.................................................................................................................................... 64
Main fuses .......................................................................................................................................... 64
Cup holder ....................................................................................................................................... 65
Tank filler neck and fill level monitor................................................................................................... 65
Rear view mirror ................................................................................................................................. 66
Heating and air-conditioning system (optional) ....................................................................................... 66
Engine compartment ............................................................................................................................... 69
Hydraulic system ..................................................................................................................................... 70
Return change valve for direct return flow............................................................................................... 70
Radiator and condenser .......................................................................................................................... 71
Operation ........................................................................................................................................73
Safety rules for operation ........................................................................................................................ 73
Safety for children............................................................................................................................... 74
Guiding the operator........................................................................................................................... 74
Working in the vicinity of overhead power lines.................................................................................. 75
Working in the vicinity of underground power lines ............................................................................ 75
Initial operation ........................................................................................................................................ 76
Setting the display language .............................................................................................................. 76
Setting the date/time........................................................................................................................... 78
Date and time display format.............................................................................................................. 79
Setting the display brightness............................................................................................................. 80
Setting the work light turn-off delay function....................................................................................... 81
Running-in of the machine.................................................................................................................. 83
Special maintenance instructions ....................................................................................................... 83
Operating the machine ............................................................................................................................ 83
Pre-operational services..................................................................................................................... 83
Walk-around inspection ................................................................................................................... 83
Dust valve - clean ............................................................................................................................ 84
Engine oil - check............................................................................................................................. 84
Coolant level - check........................................................................................................................ 84
Radiator and A/C condenser - check ............................................................................................... 85
Radiator - clean................................................................................................................................ 85
V-belt - check ................................................................................................................................... 85
Exhaust system leakage - check ..................................................................................................... 86
Hydraulic oil level - check ................................................................................................................ 86
Bucket bolt and linkage bolt - grease............................................................................................... 87
Water separator - check................................................................................................................... 87
Electrical instrumentation - check .................................................................................................... 88
Filter indicator - check...................................................................................................................... 88
Fuel level, coolant temperature, hydraulic oil temperature date and time - check........................... 89
Setting up the workplace .................................................................................................................... 89
Getting on the machine.................................................................................................................... 89
Adjusting the operator’s seat ........................................................................................................... 90
Seat belt........................................................................................................................................... 93

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Field of view..................................................................................................................................... 93
Adjusting the rear view mirrors ........................................................................................................ 94
Safety instructions for starting the engine ............................................................................................... 95
Starting the engine ............................................................................................................................. 96
Start the engine in Cold-Weather Conditions..................................................................................... 99
Stopping the engine ........................................................................................................................... 99
Observation of the displays after starting and during operation ....................................................... 100
Checking error messages ................................................................................................................ 102
Particle filter regeneration ................................................................................................................ 104
General notes ................................................................................................................................ 104
Automatic particle filter regeneration - Procedure ......................................................................... 105
Automatic particle filter regeneration - Overview ........................................................................... 107
Blocking and releasing the particle filter regeneration - Procedure ............................................... 108
Blocking and releasing the particle filter regeneration - Overview................................................. 110
Driving the machine ......................................................................................................................... 111
Driving............................................................................................................................................ 112
Turning .......................................................................................................................................... 113
Driving uphill and downhill ............................................................................................................. 115
Notes for rubber crawler operation ................................................................................................ 116
Operating the controls during excavation work ................................................................................ 117
Note on using wider and deeper buckets ...................................................................................... 117
Operating the dozer ....................................................................................................................... 118
Overview of control lever functions (standard setting)................................................................... 119
Operating the boom ....................................................................................................................... 119
Operating the arm.......................................................................................................................... 120
Operating the bucket ..................................................................................................................... 121
Swivelling the swivel frame............................................................................................................ 122
Swinging the boom ........................................................................................................................ 122
Operating the auxiliary ports ............................................................................................................ 123
Activating the auxiliary port function .............................................................................................. 123
AUX port 1 ..................................................................................................................................... 124
AUX port 2 (optional) ..................................................................................................................... 124
One-way hold operation................................................................................................................. 125
Return change valve for direct return flow .....................................................................................130
Activating the return change valve................................................................................................. 130
Depressurising the hydraulic system ............................................................................................. 131
Depressurising the auxiliary ports.................................................................................................. 131
Placing out of operation......................................................................................................................... 133
Operating the heating and air-conditioner system (optional)................................................................. 134
Heating the cab ................................................................................................................................ 134
Cooling the cab ................................................................................................................................ 135
De-icing or demisting the windows................................................................................................... 136
Operating the wiper/washer system ...................................................................................................... 137
Switching on the windscreen wiper .................................................................................................. 137
To turn on the washer system .......................................................................................................... 137
Operating the room light........................................................................................................................ 138
Operating the rotary beacon (optional).................................................................................................. 138
Operating the 12 V plug ........................................................................................................................ 138
Opening and closing the cab door......................................................................................................... 139
Opening the cab door from outside .................................................................................................. 139
Closing the cab door ........................................................................................................................ 139
Opening the cab door from the inside .............................................................................................. 139
Opening and closing the windows......................................................................................................... 140
Front window .................................................................................................................................... 140
Front window base ........................................................................................................................... 141
Side window ..................................................................................................................................... 143
Operating the working light.................................................................................................................... 143
Cold weather operation ......................................................................................................................... 144
Necessary preparations prior to the winter season .......................................................................... 144

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Operation during the winter season.................................................................................................. 144
Jump-starting the machine .................................................................................................................... 145
Operating in emergency situations ........................................................................................................ 146
Engine emergency stop.................................................................................................................... 146
Manual lowering of the front attachments......................................................................................... 146
Filling up the washer system ................................................................................................................. 147
Refuelling the machine .......................................................................................................................... 147
Refuelling the machine ..................................................................................................................... 148
Fill level monitor when refuelling ...................................................................................................... 148
Bleeding the fuel system ....................................................................................................................... 149
Replacing the fuses ............................................................................................................................... 150
Fuse layout of the fuse box .............................................................................................................. 151
Main fuses ........................................................................................................................................ 152
ECU fuse .......................................................................................................................................... 152
Operating the battery isolator ................................................................................................................ 153
Opening and closing the engine compartment cover ............................................................................ 154
Opening/closing the right side cover ..................................................................................................... 155
Opening/closing the front service cover ................................................................................................ 156
Opening/closing the left service cover................................................................................................... 156
Opening/closing the heating and air conditioner unit service cover ...................................................... 157
Replacing the bucket ............................................................................................................................. 157
Anti-theft system.................................................................................................................................... 158
Black (individual) key........................................................................................................................ 158
Red key (for registering) ................................................................................................................... 158
The key system ................................................................................................................................ 159
Registering a black key for the machine........................................................................................... 160
Troubleshooting...........................................................................................................................163
Safety rules for troubleshooting............................................................................................................. 163
Troubleshooting: Before operation ........................................................................................................ 163
Troubleshooting: Operation ................................................................................................................... 164
Troubleshooting: Display indications ..................................................................................................... 166
Maintenance .................................................................................................................................171
Safety rules for maintenance................................................................................................................. 171
Personnel requirements ........................................................................................................................ 171
Repair work on the machine.................................................................................................................. 172
Maintenance intervals............................................................................................................................ 172
Maintenance interval display ............................................................................................................ 172
General maintenance chart: 50 to 500 hours of operation .................................................................... 174
General maintenance chart: 550 to 1000 hours of operation ................................................................ 175
Servicing maintenance chart: 50 to 500 hours of operation .................................................................. 176
Servicing maintenance chart: 550 to 1000 hours of operation .............................................................. 178
Operating materials ............................................................................................................................... 180
Cleaning the machine............................................................................................................................ 181
Servicing ................................................................................................................................................ 182
Coolant - refill ................................................................................................................................... 182
Radiator and condenser - clean ....................................................................................................... 183
Dusting cover.................................................................................................................................... 184
V-belts - check/adjust/change .......................................................................................................... 185
Air conditioner V-belt (optional)...................................................................................................... 185
Fan/Alternator V-belt...................................................................................................................... 185
Coolant hoses and hose clamps - check..........................................................................................186
Coolant - change .............................................................................................................................. 187
Engine oil and oil filter - change ....................................................................................................... 188
Engine oil - drain ............................................................................................................................ 188
Oil filter - change............................................................................................................................ 189
Engine oil - fill................................................................................................................................. 189
Air filter - check/clean/change .......................................................................................................... 190

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Fuel filter - change ........................................................................................................................... 191
Water separator - drain .................................................................................................................... 192
Water separator - clean.................................................................................................................... 193
Water separator filter - change......................................................................................................... 194
Fuel tank - drain ............................................................................................................................... 195
Fuel lines and the air intake hoses - check ...................................................................................... 196
Return filter in the hydraulic oil tank - change .................................................................................. 197
Tank breather filter - change ............................................................................................................ 198
Pilot circuit filter - change ................................................................................................................. 199
Suction filter - change ...................................................................................................................... 200
Hydraulic oil - refill/change ............................................................................................................... 202
Draining the hydraulic oil ............................................................................................................... 203
Filling the hydraulic oil ................................................................................................................... 203
Battery service ................................................................................................................................ 205
Battery - check............................................................................................................................... 205
Battery - charge ............................................................................................................................. 206
Battery - change ............................................................................................................................ 207
Lubrication........................................................................................................................................ 208
Swivel gear - grease...................................................................................................................... 208
Swivel ball bearing - grease........................................................................................................... 208
Swing bracket - grease .................................................................................................................. 209
Other greasing points .................................................................................................................... 209
Crawler tension - check/adjust ......................................................................................................... 210
Crawler tension - check ................................................................................................................. 210
Crawler tension (steel) - check ...................................................................................................... 211
Crawler tension - adjust ................................................................................................................. 211
Drive unit oil - change ...................................................................................................................... 212
Interior air filter - check/clean/change .............................................................................................. 212
Pipes and hoses of the heating and air-conditioner systems - check .............................................. 214
Coolant content (air-conditioner only) - check.................................................................................. 215
Viewing the operations log ............................................................................................................... 216
Bolted joints - check .............................................................................................................................. 217
Tightening torque for screws............................................................................................................ 217
Tightening torque for hose clamps ................................................................................................... 217
Tightening torque for hydraulic hoses .............................................................................................. 218
Tightening torque for hydraulic pipes ............................................................................................... 218
Tightening torque for hydraulic adapters.......................................................................................... 219
Tightening torque for elbow pipe joints with shim ............................................................................ 219
Safety inspection......................................................................................................................... 221
Taking out of service and storage ............................................................................................. 223
Safety rules for taking out of service and storage ................................................................................. 223
Storage conditions................................................................................................................................. 223
Measures before taking out of service .................................................................................................. 223
Measures during taking out of service................................................................................................... 223
Start-up after taking out of service ........................................................................................................ 224
Lifting capacity of the excavator ............................................................................................... 225
Constructive calculation of lifting capacity............................................................................................. 225
Lifting attachment.................................................................................................................................. 225
Load suspension device........................................................................................................................ 226
Max. lifting load during swivel operation is 360°.................................................................................... 228
Software information .................................................................................................................. 231

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Abbreviations
1/min revolutions per minute
% percent
° degrees
°C degree Celsius
A Ampere
acc. according
API American Petroleum Institute
approx. approximately
ASTM American Society for Testing and Materials
bar Bar
CECE Committee for European Construction
Equipment
CO2carbon dioxide
dB decibel
DIN Deutsches Institut für Normung 
(German Institute for Standards)
DPF Diesel particulate filter
e.g. for example
EMC electromagnetic compatibility
EN Europäische Norm
(European standard)
FOPS Falling-Object Protective Structure
GL Ground level
h Hour
incl. including
ISO International Organization for 
Standardization
kg kilogramme
km/h kilometre per hour
kN kilonewton
kV kilovolt
kW kilowatt
llitre
l/min litres per minute
LpA sound pressure level operator’s place
LwA sound power level
mmetre
m/s² metre per square second
m³ cubic metre
max. maximum
MIL Military Standards
mm millimetre
MPa Megapascal
NNewton
resp. respectively
RMS Root Mean Square 
(square root of mean square)
ROPS Roll-Over Protective Structure
s second
SAE Society of Automotive Engineers
tton
VVolt

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General symbols
Warning light
Fuel indicator
Engine oil pressure indicator
Charge indicator
Glow indicator
Hydraulic oil
Fast speed
Slow speed
Forward travel
Backward travel
Raise boom
Lower boom
Arm dump
Arm crowd
Bucket crowd
Bucket dump
Coolant temperature indicator
Service interval indicator
Swivel boom (left)
Swivel boom (right)
Dozer up
Dozer down
Control lever direction
Control lever direction
Beacon
Auxiliary port enable switch
Working lights
AUTO IDLE switch
AUTO IDLE indicator
Fan
Menu switch
Overload warning switch
Information
Set clock indicator
Overvoltage indicator
Anti-theft system fault indicator

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Insert key indicator
Pull out key indicator
Lower control lever lock indicator
Auxiliary port indicator
Horn
Please read the operating manual
Wiper switch
Washer switch
Diesel fuel
Lock
Unlock
Engine stop display
Particle filter regeneration
Increase engine speed
Particle filter regeneration locked
Travel alarm cancel
Dozer in floating position
Overload warning indicator
Raise control lever lock indicator
Start engine indicator
Controller Area Network indicator
Return switch
Acknowledge
Cancel
Water separator filter
Seatbelt indicator
Hydraulic oil temperature indicator
Log record
Language setup
Display brightness
Work light turn-off delay
Camera

General information
W9272-8135-1 9
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GENERAL INFORMATION
Foreword
Safety instructions, the rules and regulations for the use of machines given in these operating instructions apply
to the machines mentioned in this documentation.
It is the responsibility of the owner(s):
to ensure local, regional and national regulations are observed,
to observe the bodies of rules (laws, regulations, guidelines, etc.) stated in the operating instructions to ensure
safe handling of the equipment,
to ensure that the operating instructions are always available for the operating personnel and the information,
such as notes, warnings and safety rules and regulations, are followed in all points.
The data in the operating instructions apply for all models. Information applying only optional equipment is high-
lighted e.g. (optional).
The terms "front" and "direction of travel" refer to the view of the op-
erator when seated on the operator’s seat. Forward direction of
travel means that the dozer is at the front when driving forwards as
shown in the figure.
The symbols for operating and safety instructions are listed under "Safety symbols" (page 15).
EC Declaration of Conformity
Your copy of the EC declaration of conformity is delivered with the machine. Keep the EC declaration of conformity
in a safe place and show it, if requested, to the responsible authorities. Should the EC declaration of conformity
be lost, contact your local KUBOTA dealer.
The CE marking is located on the type plate. If the machine is modified or retrofitted without the approval of the
manufacturer, the safety of the machine may be affected, thus rendering the EC declaration of conformity invalid.
Direction of travel

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General information
Content of the EC DECLARATION OF CONFORMITY:
ORIGINAL EC DECLARATION OF CONFORMITY
Manufacturer:
KUBOTA CORPORATION
Trade name:
KUBOTA
Type:
Compact excavator
Model:
U50
-5
Product identification number:
>XXXXXXXXXXXXXXXXX<
This machine fulfills all the relevant provisions of the Machinery Directive 2006/42/EC
This machine fulfills all the relevant provisions of the directives and regulations:
2000/14/EC, 2014/30/EU, (EU) 2016/1628
Conformity assessment according to the directive 2000/14/EC, annex VI.
Model
Rated speed
Nominal output
(ISO 14396)
Measured sound
power level
Guaranteed sound
power level
U50-5 2200 1/min
29.7 kW 94.3 dB (A)
96 dB (A)
Referred standards:
EN 474
-1:2006+A6:2019 except Annex G,
EN
474-5:2006+A3:2013
Notified body:
TÜV SÜD Industrie Service GmbH
(Notified Body
0036 for EC Directive 2000/14/EC)
Westendstrasse 199,
D-80686 Munich, Germany
Name and address of the
manufacturer:
KUBOTA CORPORATION
1
-1-1, NAKAMIYA OIKE HIRAKATA
OSAKA, 573
-8573, JAPAN
Name and address of the
authorized representative
KUBOTA Baumaschinen GmbH
Steinhauser Str. 100
D
-66482 Zweibrücken, Germany
Name and address of the
person responsible for the
technical documentation:
Mikio Taguchi,
President,
KUBOTA Baumaschinen GmbH
Steinhauser Str. 100,
D
-66482 Zweibrücken, Germany

General information
W9272-8135-1 11
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EC declaration of conformity radio equipment-manufacturer
Hereby, ASAHI DENSO CO., LTD. declares that the radio equipment type [CZ106] is in compliance with Directive
2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address:
http://en.ad-asahidenso.co.jp/euro-compliance/
Date of issue of the operating instructions
The date of issue of the operating instructions is printed on the bottom right of the front page of the book.
Operating personnel
The duties of personnel with respect to operation, servicing, repairs and safety inspections must be set forth clearly
by the owner.
Personnel in training are allowed to work on or with the machine only under the supervision of an experienced
operator.
Operator
According to industrial safety regulations, only persons who were instructed in the operation of the machine, who
have proven their qualification to the owner (employer) and who can be expected to perform their duties in a reli-
able way are allowed to operate the machine independently.
Only instructed personnel are allowed to start the machine and operate the controls.
Trained personnel
Trained personnel are skilled persons with a technical qualification who are able to determine damages to the ma-
chine and perform repairs in their area of qualification (e.g. hydraulic or electrical engineering).
Only trained and instructed personnel are allowed to work on the machine.
Qualified personnel
Based on their technical training and experience in their field, qualified personnel should have sufficient knowledge
about the technology used in this machine and be familiar with the applicable national work safety regulations,
accident prevention regulations and the generally accepted technical rules so that they can assess the safe con-
dition of the machine.

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General information
Location of the operating instructions
The operating instructions must always be kept on the machine. If the operating instructions have become illegible
due to continuous use, the owner (operator) must order a replacement from the manufacturer.
There is a compartment (1) for the operating instructions behind the
backrest of the operator’s seat.
Spare parts
When ordering spare parts, please always provide the following information:
Machine’s product identification number and year of construction (see type plate)
Designation/type of spare part (see original KUBOTA spare parts catalogue)
Part number of the spare part (see original KUBOTA spare parts catalogue)
Quantity required
Customer number
For written orders, please provide this information exactly, or for telephone orders, please have this information
ready before calling. This makes the process easier for us and for you, and prevents errors and incorrect orders
or deliveries.
Please place your order with your KUBOTA dealer.

Safety rules
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SAFETY RULES
Basic safety instructions
The EC machine utilization directive (2009/104/EC) dated 16/09/2009 applies for the operation of the afore-
mentioned machine.
The information in these operating instructions applies for maintenance and repairs.
National rules and regulations apply where applicable.
Duties, liability and warranty
A basic requisite for the safe handling and problem-free operation of the machine is the knowledge of the safety
instructions and safety regulations.
These operating instructions, in particular the safety instructions, must be followed by all persons working near or
with the machine. Above and beyond this, the safety rules and regulations applicable for the site must also be ob-
served.
Hazards occurring during the handling of the machine:
The machines are manufactured according to the state of technology and the recognized safety rules. Nev-
ertheless, danger to the life and limbs of the operator or a third party, or damage to the machine or to other
property can occur. The machine(s) may only be used
for the approved use and
in a completely safe operating state.
Malfunctions which can reduce safety must be repaired immediately.

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Safety rules
Warranty and liability
The scope, period and form of the warranty are set forth in the sales and delivery conditions of the manufacturer.
The operating instructions valid at the time of delivery shall be the basis for any warranty claims arising from errors
in the documentation, see the date of issue of the operating instructions (page 11). The following applies above
and beyond the sales and delivery conditions: No warranty or liability shall be assumed for personnel and property
damages resulting from one or more of the following reasons:
unapproved use of the machine,
improper starting, operation and maintenance of the machine,
operation of the machine with defective safety devices or improperly installed or non-operational safety and
protective devices,
ignorance or non-observance of these operating instructions,
insufficiently qualified or insufficiently instructed operating personnel,
improperly performed repairs,
unauthorised engineering changes to the machine,
poor surveillance of machine parts subject to wear,
catastrophes caused by the effect of foreign objects or an act of God.
The owner must ensure at his own responsibility that
the safety rules are observed (page 13),
unapproved use (page 16) and unauthorised operation are excluded and
the approved use (page 16) is ensured and the machine is operated in accordance with the contractual con-
ditions of use.

Safety rules
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Safety symbols
The following terms and hazard symbols are used in these operating instructions:
Identifies important operating procedure information which may not be immediately evident to the op-
erator.
Identifies operating procedures which must be followed exactly to prevent damage to the machine or
other property.
Identifies operating procedures which must be followed exactly to prevent danger to persons.
Identifies possible hazards in the handling of batteries.
Identifies possible hazards from caustic materials (battery acid).
Identifies possible hazards from explosive materials.
Prohibits the use of fire, ignition sources, and smoking.
Prohibits the spraying of water.
Identifies operating procedures for the proper disposal and storage of ensuing waste materials.
STOP

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Safety rules
Approved use
The machines specified in this operator’s manual may only be used for to loose the ground, excavating, picking
up, transporting and dumping soils, rocks and other materials, for work with the dozer or with a breaker. The load
may be transported largely without driving the machine. Do not exceed the maximum lifting capacity.
Approved use also includes:
observation of all notes in these operating instructions,
regular servicing,
regular safety inspections.
Unapproved use
Any improper use – i.e. any deviation from the information in the "Approved use" section (page 16) of the machine
documented in these operating instructions – is considered an unapproved use. This also applies to the non-ob-
servance of the standards and guidelines listed in these operating instructions.
Hazards can occur in case of improper use. Such improper uses include:
Using the machine to lift loads without proper equipment for lifting operations,
using the machine in contaminated environments,
using the machine in closed rooms without sufficient ventilation,
using the machine under conditions of extreme temperatures (extreme heat or cold),
using the machine for underground works,
using the machine to transport people (e.g. by means of attachments),
using the machine for demolition work, with the danger of falling objects (e. g. tearing down walls),
using the machine with log grab.

Safety rules
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Special duties of the owner
Owner of the machine in the sense of these operating instructions is any person or company which uses the ma-
chine itself or on whose order it is used. In special cases (e.g. leasing, rental), the owner is the person who must
perform the duties arising from operation according to the conditions of the contract between owner and user of
the machine.
The owner must ensure that the machine is only used properly and that any danger to the life and health of the
user or others who are in the proximity of the user are eliminated. Furthermore, observance of the safety rules and
regulations as well as the operating, maintenance and repair regulations must be ensured. The owner must make
sure that all operators and users have read and understood these operating instructions.
Persons who work with or on the machine must be provided by the operator with, and where applicable use suit-
able personal protective equipment (PPE), for example suitable working clothes, safety shoes, safety helmets, eye
protection, ear protection and air-filter masks. The owner/employer bears the main responsibility for the PPE,
which is specified by the safety rules for particular types of activity.
Waste such as old oil, fuel, hydraulic fluid, coolant and batteries comes under the category of toxic waste and can
be a hazard to the environment, people and animals.
Disposal must be undertaken in an appropriate way, according to legally prescribed pollution control and safety
regulations.
If you have questions about the correct disposal or storage of refuse and toxic waste, contact your KUBOTA dealer
or a local waste management contractor.

18 W9272-8135-1
05/2020
Safety rules
Noise emission and vibration
The values specified in this manual have been identified in the test cycle at an identical machine and are valid for
a standard equipment machine. The determined values are shown in the Technical Data (page 46).
Noise emission
The noise levels were determined using the method of determining the guaranteed sound pressure level of
ISO 4871 based on directive 2000/14/EC, appendix VI.
The noise levels shown are not applicable for the determination of additional workplace noise emissions. The ac-
tual noise levels may need to be determined directly at the workplaces, subject to actually existing conditions (oth-
er noise sources, special operating conditions, sound reflections).
Depending on the actual noise emissions the owner must provide the necessary personal protective equipment
to the operator (ear protection).
Vibrations
The vibrations at the machine have been determined at an identical machine.
The vibration stress on the operator over a longer period of time must be determined by the owner at the operating
site, in compliance with directive 2002/44/ EC in order to consider individual magnitudes of influence.
Noise of a noise level of more than 85 dB (A) can cause hearing damage.
From a noise level of 80 dB (A), the use of an ear protection is recommended.
From a noise level of 85 dB (A), the operator must wear an ear protection.
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