Kubota KX61-3 User manual

GB
MINI EXCAVATOR
MODELS
KX61-3
KX71-3
OPERATING INSTRUCTIONS
RG248-8135-9 - Original - 05/2015

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Dear valued customer,
please fill in the form below. Your information will help us to help you.
Type:
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Please contact your KUBOTA dealer for any additional information or troubleshooting procedures not men-
tioned 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 these. All responsibilities arise of the respective sales contract contain-
ing the complete and exclusively valid contractual warranty. See the "Duties, liability and warranty" section
(page 12). This documentation does neither extend nor restrict the contractual warranty.
KUBOTA Baumaschinen GmbH reserves its right to change the information contained in this document with
respect to future technical development without altering the basic characteristics of the excavators described
herein and without amending this document.
Distribution and reproduction of this documentation and disclosure of its content are not allowed unless ex-
pressly approved by the manufacturer. Violators of the above terms are liable for compensation for damages.

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Table of contents
Abbreviations......................................................................................................................................................8
General symbols.................................................................................................................................................9
GENERAL INFORMATION............................................................................................................... 10
Foreword ..........................................................................................................................................................10
EC declaration of conformity............................................................................................................................10
Date of issue of the operating instructions.......................................................................................................11
Operating personnel.........................................................................................................................................11
Location of the operating instructions ..............................................................................................................11
Spare parts.......................................................................................................................................................11
SAFETY RULES............................................................................................................................... 12
Basic safety instructions...................................................................................................................................12
Duties, liability and warranty.............................................................................................................................12
Safety symbols.................................................................................................................................................14
Approved use ...................................................................................................................................................15
Unapproved use...............................................................................................................................................15
Special duties of the owner..............................................................................................................................15
Noise emission and vibration ...........................................................................................................................16
Noise emission.................................................................................................................................................16
Vibrations..........................................................................................................................................................16
Safety labels on the excavator.........................................................................................................................17
Safety devices..................................................................................................................................................24
Locking the controls ....................................................................................................................................24
Engine stop knob.........................................................................................................................................24
Roll-over protection (ROPS) .......................................................................................................................25
Emergency hammer....................................................................................................................................25
Hazards coming from the hydraulic system.....................................................................................................25
Fire protection...................................................................................................................................................26
RECOVERY, LOADING AND TRANSPORT.................................................................................... 27
Safety rules for recovery ..................................................................................................................................27
Safety rules for hoisting the excavator with a crane.........................................................................................27
Safety rules for transport..................................................................................................................................27
Recovery ..........................................................................................................................................................28
Hoisting the excavator with a crane .................................................................................................................28
Transport on a flat bed trailer...........................................................................................................................30
DESCRIPTION OF THE EXCAVATOR............................................................................................. 32
Model overview.................................................................................................................................................32
Model KX61-3..............................................................................................................................................32
Model KX71-3..............................................................................................................................................32
Dimensions.......................................................................................................................................................33
KX61-3 Dimensions.....................................................................................................................................33
KX71-3 Dimensions.....................................................................................................................................34
Specifications ...................................................................................................................................................35
Identification of the excavator...........................................................................................................................36
Equipment ........................................................................................................................................................36
Standard equipment....................................................................................................................................36
ASSEMBLY AND FUNCTIONS........................................................................................................ 37
Component overview........................................................................................................................................37
Operator's place ...............................................................................................................................................38

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Right control console...................................................................................................................................38
Description of the components of the right control console ...................................................................39
Displays and indicators - description......................................................................................................39
Left control console......................................................................................................................................40
Description of the components of the left control console......................................................................40
Controls........................................................................................................................................................40
Description of the controls......................................................................................................................41
Further components in the cab....................................................................................................................42
Wiper/washer system.............................................................................................................................42
Interior lighting........................................................................................................................................42
Fuse box.................................................................................................................................................42
Vehicle battery........................................................................................................................................43
Tool compartment...................................................................................................................................43
Fuel tank filler opening ...........................................................................................................................43
Engine compartment.........................................................................................................................................44
Hydraulic system...............................................................................................................................................45
OPERATION .....................................................................................................................................46
Safety rules for operation..................................................................................................................................46
Safety for children........................................................................................................................................47
Guiding the operator....................................................................................................................................47
Working in the vicinity of overhead power lines ..........................................................................................48
Working in the vicinity of underground power lines.....................................................................................48
Initial operation..................................................................................................................................................49
Setting the display language .......................................................................................................................49
Running-in of the excavator.........................................................................................................................49
Special maintenance instructions................................................................................................................49
Operating the excavator ...................................................................................................................................49
Pre-operational services..............................................................................................................................49
Check the engine oil level.......................................................................................................................50
Checking the coolant level......................................................................................................................50
Checking the radiator and the oil cooler.................................................................................................50
Checking the V-belt ................................................................................................................................51
Checking the exhaust system for leaks..................................................................................................51
Checking the oil level of the hydraulic system........................................................................................51
Checking the water separator of the fuel system...................................................................................52
Lubrication..............................................................................................................................................52
Checking the fuel level of the fuel tank...................................................................................................53
Setting up the workplace .............................................................................................................................53
Getting on the excavator ........................................................................................................................54
Adjusting the operator's seat..................................................................................................................54
Horizontal seat adjustment (seat stand-off) ......................................................................................54
Spring adjustment (operator's weight)...............................................................................................54
Seat height adjustment (knee height)................................................................................................54
Backrest adjustment..........................................................................................................................55
Seat belt ............................................................................................................................................55
Exterior mirror adjustment.................................................................................................................55
Safety instructions for starting the engine ...................................................................................................55
Starting the engine.......................................................................................................................................56
Stopping the engine.....................................................................................................................................57
Observation of the displays after starting and during operation..................................................................57
Driving the excavator...................................................................................................................................58
Driving.....................................................................................................................................................59
Turning....................................................................................................................................................60
During driving ....................................................................................................................................60
From a standing position...................................................................................................................61
Turning on the spot............................................................................................................................61
Driving uphill and downhill......................................................................................................................61
Notes for rubber crawler operation.........................................................................................................62
Making sharp turns............................................................................................................................62
Protecting the crawler against salt ....................................................................................................62

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Operating the controls during excavation work...........................................................................................62
Notes for using wider and deeper buckets..................................................................................................63
Operating the dozer blade .....................................................................................................................63
Overview of control lever functions........................................................................................................64
Operating the boom ...............................................................................................................................64
Operating the arm ..................................................................................................................................65
Operating the bucket..............................................................................................................................66
Swivelling the swivel frame....................................................................................................................66
Swinging the boom.................................................................................................................................67
Operating the auxiliary port.........................................................................................................................68
Return change valve..............................................................................................................................69
Pressure relief of the hydraulic system..................................................................................................69
Placing out of operation....................................................................................................................................70
Cab version only ....................................................................................................................................70
Operating the wiper/washer system.................................................................................................................71
Switching on the windscreen wiper.............................................................................................................71
Switching on the washer system.................................................................................................................71
Operating the room light (cab version).............................................................................................................72
Operating the rotary beacon (accessories)......................................................................................................72
Operating the heater (cab version)...................................................................................................................72
Opening and closing the cab door....................................................................................................................74
Opening the cab door from outside.............................................................................................................74
Closing the cab door ...................................................................................................................................74
Opening the cab door from inside...............................................................................................................74
Opening and closing the windows....................................................................................................................75
Front window...............................................................................................................................................75
Side window................................................................................................................................................76
Operating the working lights.............................................................................................................................76
Cold weather operation....................................................................................................................................77
Necessary preparations prior to the winter season.....................................................................................77
Operation during the winter season............................................................................................................77
Jump-starting the excavator.............................................................................................................................78
Emergency stop functions................................................................................................................................79
Manual engine stop.....................................................................................................................................79
Manual lowering of the front attachments...................................................................................................79
Filling up the washer system............................................................................................................................79
Refuelling the excavator...................................................................................................................................80
Bleeding the fuel system ..................................................................................................................................80
Replacing the fuses..........................................................................................................................................81
Fuse layout of the fuse box.........................................................................................................................82
Installing and uninstalling the operator's seat ..................................................................................................82
Opening and closing the engine compartment cover.......................................................................................82
Opening and closing the side cover.................................................................................................................83
Removing and installing the right side panel....................................................................................................83
Replacing the bucket........................................................................................................................................84
Anti-theft system...............................................................................................................................................84
Black (individual) key...................................................................................................................................85
Red key (for registering)..............................................................................................................................85
The key system...........................................................................................................................................85
Registering a black key for the machine.....................................................................................................86
TROUBLESHOOTING...................................................................................................................... 88
Safety rules for troubleshooting........................................................................................................................88
Troubleshooting: Pre-operational services.......................................................................................................88
Troubleshooting: operation...............................................................................................................................89
Troubleshooting: Display indications................................................................................................................90

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MAINTENANCE ................................................................................................................................91
Safety rules for maintenance............................................................................................................................91
Personnel requirements....................................................................................................................................91
General maintenance chart: 50 to 500 hours of operation...............................................................................92
General maintenance chart: 550 to 1000 hours of operation...........................................................................93
Servicing maintenance chart: 50 to 500 hours of operation.............................................................................94
Servicing maintenance chart: 550 to 1000 hours of operation.........................................................................95
Cleaning the excavator.....................................................................................................................................96
Maintenance .....................................................................................................................................................96
Refilling the coolant .....................................................................................................................................96
Cleaning the radiator ...................................................................................................................................97
Checking and adjusting the V-belt tension..................................................................................................97
Checking the coolant hoses ........................................................................................................................98
Replacing the engine oil and oil filter...........................................................................................................98
Draining the engine oil............................................................................................................................98
Replacing the oil filter.............................................................................................................................99
Filling the engine oil................................................................................................................................99
Replacing the coolant................................................................................................................................100
Checking and cleaning the air filter ...........................................................................................................101
Replacing the fuel filter..............................................................................................................................102
Draining water from the fuel tank...............................................................................................................103
Replacing the return filter in the hydraulic oil tank.....................................................................................103
Replacing the suction filter in the hydraulic oil tank...................................................................................104
Draining and topping up hydraulic oil ........................................................................................................105
Draining the hydraulic oil......................................................................................................................105
Filling the hydraulic oil..........................................................................................................................106
Replacing the breather filter in the hydraulic oil tank.................................................................................106
Battery service...........................................................................................................................................107
Checking the fluid level of the battery ..................................................................................................107
Charging the battery.............................................................................................................................108
Installing/uninstalling and replacing the battery....................................................................................109
Lubrication .................................................................................................................................................109
Greasing the swivel gear......................................................................................................................109
Greasing the pitch bearing ...................................................................................................................110
Checking and tensioning the crawler tension............................................................................................110
Checking the crawler tension ...............................................................................................................111
Adjusting the crawler tension................................................................................................................111
Replace the drive unit oil ...........................................................................................................................112
Greasing the pilot valve linkage.................................................................................................................112
Checking the electric cables and connections ..........................................................................................112
Replacing the in-line filter ..........................................................................................................................113
Resetting the service period indicator .......................................................................................................113
Checking the bolted joints...............................................................................................................................114
Tightening torque for screws .....................................................................................................................114
Tightening torque for hose clamps............................................................................................................114
Tightening torque for hydraulic hoses .......................................................................................................114
Tightening torque for hydraulic pipes ........................................................................................................115
Tightening torque for hydraulic adapters...................................................................................................115
Recommended lubricants...............................................................................................................................116
Repair work on the machine...........................................................................................................................117
SAFETY INSPECTION....................................................................................................................118

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TAKING OUT OF SERVICE AND STORAGE ................................................................................ 119
Safety rules for taking out of service and storage..........................................................................................119
Storage conditions..........................................................................................................................................119
Measures before taking out of service ...........................................................................................................119
Measures during taking out of service ...........................................................................................................119
Start-up after taking out of service .................................................................................................................120
LIFTING CAPACITY OF THE EXCAVATOR.................................................................................. 121
Constructive calculation of lifting capacity......................................................................................................121
Lifting attachment...........................................................................................................................................122
Load suspension device.................................................................................................................................123
Max. lifting load during swivel operation is 360° ............................................................................................124
ACCESSORIES.............................................................................................................................. 134
KUBOTA rotary beacon..................................................................................................................................134
KUBOTA arms................................................................................................................................................134
KUBOTA pipe safety valve.............................................................................................................................135
Note on the use...............................................................................................................................135
KUBOTA overload warning function...............................................................................................................136
KUBOTA quick coupling systems and equipments........................................................................................136
KUBOTA bucket accessories.........................................................................................................................136

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Abbreviations
1/min revolutions per minute ISO International Organization for Standardi-
% percent zation
° degrees kg Kilogramme
°C degree Celsius km/h Kilometre per hour
A Ampere kN Kilonewton
acc. according kV Kilovolt
API American Petroleum Institute kW Kilowatt
approx. approximately L Litre
ASTM American Society for Testing and L/min Litres per minute
Materials LpA Sound pressure level operator's place
bar bar LwA Measured sound power level
CECE Committee for European Construction m Metre
Equipment m/s² Metre per square second
CO2carbon dioxide m³ Cubic metre
dB Decibel max. Maximum
DIN Deutsches Institut für Normung (German mm Millimetre
Institute for Standards) MPa Megapascal
e.g. For example N Newton
EMC Electromagnetic compatibility resp. Respectively
EN European standard s Second
GL Ground level t Ton
incl. including V Volt

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General symbols
Warning light Swivel boom (left)
Fuel display Swivel boom (right)
Engine oil display Dozer blade up
Charge display Dozer blade down
Glow display Control lever direction
Hydraulic oil Control lever direction
Travel speed Rotary beacon indicator on/off
Low speed Display selector switch
Forward travel Auxiliary port switch
Backward travel Working light button
Raise boom
Lower boom
Arm dump
Arm crowd
Bucket crowd
Bucket dump

General information
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GENERAL INFORMATION
Foreword
These operating instructions apply only to the KUBOTA excavator models KX61-3 and KX71-3 which
comply with the declaration of conformity stated below (page 10).
Safety instructions, the rules and regulations for the use of excavators given in these operating instructions
apply to the excavators 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 informa-
tion such as notes, warnings and safety rules and regulations are followed in all points.
The data in the operating instructions apply for all models. Any differences are highlighted (e.g. cab version or
KX61-3, KX71-3).
The terms "front" and "direction of travel" refer to the view of the
operator when seated on the operator's seat. Forward direction
of travel means that the dozer is at the front when driving for-
wards as shown in the figure.
The symbols for operating and safety instructions are listed under "Safety Symbols" (page 14).
EC declaration of conformity
With the EC declaration of conformity, KUBOTA Baumaschinen GmbH certifies that the exca-
vator is in conformity with the valid standards and regulations at the time of marketing. The CE
conformity marking is located on the type plate and indicates compliance with the regulations.
If the excavator is modified or retrofitted without the approval of the manufacturer, the safety of
the excavator may be affected, thus invalidating the EC declaration of conformity.
The EC declaration of conformity is attached to the operating instructions for delivery of the
excavator.
Keep the EC declaration of conformity in a safe place and show it, if requested, to the respon-
sible authorities.
Should the EC declaration of conformity get lost, please contact your KUBOTA dealer.