Kubota XN12-8 User manual

XN12-8
Operation Manual
Applicable model number
XN12-8
Please read this manual and fully
understand its content before proceeding
with the operation, inspection and
maintenance of this machine

Safety Warning Signs
includes
This sign denotes a safety warning.
The information behind the sign
important safety information.
Please read and understand this information to
prevent personal injuries or deaths.
The machine owner or employer is responsible
for instructing every operator to operate all
equipment correctly and safely in detailed
manner. All personnel operating this machine
shall sufficiently understand the contents of this
manual.
Before operating the machine, all operation
personnel must receive the guidance on related
functions of excavator.
Before operating this machine in a working site,
learn and practice how to use the machine
controls correctly in a safe and spacious place.
The improper methods during operations,
checking, and maintenance of machine will
result in injuries or deaths.
Before any operation, checking, or maintenance
of machine, please read and understand this
manual.
Please always carry this manual with you. It’s
preferable to preserve this manual on the
machine. If this manual is lost or damaged,
please immediately order a new manual from a
dealer. At the transfer of this machine, please
ensure to hand this manual over to the new
owner.
The machine supplied by Ken stone Heavy
Machinery conforms to the local standards and
specifications of the country exported. If your
machine is purchased from other country or
from an individual or company of other country,
this machine is probably not installed with the
safety devices or safety standards required for
the operations of this machine in your country. If
you have any doubt on the compliance of your
machine with the relevant standards and
regulations in your country, please contact a Ken
stone dealer.

The safety information on this manual and
machine identifications is indicated by words
“Danger”, “Warning”, and “Notice”. The
meanings of these signal words are as below:
Danger
“Danger” denotes high dangerous level, for
which the negligence will result in death or
serious injury.
Warning
“Warning” denotes medium danger level, for
which the negligence will probably result in
death or serious injury.
Notice
0-1
“Notice” denotes low danger level, for which
the negligence will result in minor or medium
injuries.
Important: The word “Importance” is intended
to alert the operation and maintenance
personnel of the possible damages of machine
and its components.
It’s impossible for us to predict all possibly
existed dangers. Therefore, the warnings in this
manual or on this machine can’t cover all
possible accidents. Therefore, during the
operations of machine, ensure to take cautions
and abide by all conventional safety measures
to prevent harms to machine, operation
personnel, or other personnel.
Signal Words

Introduction
Foreword
This manual describes the operations, checking,
and maintenance of this machine and the safety
descriptions to be observed during operations.
Should you have any doubt, please contact a
dealer or service provider of Ken stone Heavy
Machinery.
●In some details, this manual probably
differs from the manual attached on the
machine in use.
●Please be noted that the information
contained in this manual and the
parameters of machine are subject to
changes without further notice.
The manual is in the circular manual
box behind the seat
Serial number
Important: Do not disassemble the machine
nameplate with serial number. Observe the
serial numbers of machine and engine and
record them in the blank area below.
Machine No.:
Engine No.:
0-2

Front, Rear, Left, and Right
The front, rear, left, and right of the machine
indicated in this manual are based on the status
sitting in the driver seat, with the bulldozing
blade visible in the front.
0-3
Designated Operations
This machine is mainly applied for following
operations:
●Digging
●Ditching
●Side ditching
●Leveling
●Loading
Product Features
●Small size, flexible operation
●Can be equipped with a variety of
attachments
●Track width "flexible machine width
structure"
Run-in period
For the first 100 hours of the new machine (as
indicated by the timer), please follow the
instructions below:
Using the new machine without run-in will
deteriorate acceleration performance and
probably shorten the life of machine.
●Sufficiently warm up the engine and
hydraulic oil.
●Avoid heavy-load and rapid operations.
Maintain the load at approximately 80% of
maximum load capacity during operations.
●Do not start, accelerate, steer, or stop
suddenly, unless it’s really necessary.
Front
Left Right
Rear
Introduction

Notes about Reading of This
Manual
Please be noted that the descriptions and
graphics contained in this manual probably are
not applicable for your machine in use. The
numbers in graphics are marked by circles. The
same numbers in the descriptions are marked in
parentheses. (For instance: ①→(1))
Signs used in this manual
The meanings of the signs used in this manual
are as below.
, …. Prohibition
……. Lock
……Unlock
0-4
Noise and vibration
A-Weighted emission sound pressure level at
the operator's position measured according to
work cycle procedures specified in “ISO
6396 “ is 78dB(A), The hands and arms are
exposed to a weighted root mean square
acceleration that is less than 2.5 m/s2.
The body is exposed to a weighted root mean
square acceleration that is less than 0.5 m/s2.
Measurements are obtained on a
representative machine using the procedures
in the following
standards: ''ISO 2631-1" ''ISO 5349-1" ''ISO
5349-2"
Introduction

0-5
Signal words...................................0-1
Introduction...................................0-2
Safety..............................................1-1
General Precautions ......................................1-2
Precautions during Preparations....................1-8
Safety Measures at Start..............................1-10
Operation Precautions .................................1-12
Precautions for Parking...............................1-22
Precautions during Transport ......................1-23
Precautions for maintenance.......................1-25
Safety Signs .......................................................1-35
Controls...........................................2-1
Component Name............... ............................2-2
Start key, Maintenance cover.........................2-4
Fuse case, Fuel filling port, Seat ...................2-5
Electrical control panel...................................2-8
Switches........................................................2-10
Joysticks and Pedals......................................2-11
Accessory......................................................2-14
Operations...................................... 3-1
Before Start of Operations..............................3-2
Start and Stop of Engine.................................3-3
Operations of Machine....................................3-7
Operations of Procedures..............................3-17
Parking of This Machine...............................3-26
Treatment in Cold Weather...........................3-28
Handling of Rubber Tracks...........................3-29
Transportation..................................4-1
Loading and Unloading...................................4-2
Lifting of Machine...........................................4-4
Fixing of Machine............................................4-6
Maintenance....................................5-1
Overview..........................................................5-2
Service Data.....................................................5-4
Critical Safety Parts.......................................5-11
Maintenance List...........................................5-13
Walk-Around Checking.................................5-15
Daily routine checking (Every 10h)..............5-17
After first 50h (For new machine only)........5-23
Every 50h......................................................5-25
Every 250h...................................................5-30
Every 1000h..................................................5-35
Every 1500h..................................................5-39
Every 2000h..................................................5-40
As necessary...................................................5-42
Maintenance during Long-Time Parking......5-48
Troubleshooting................................6-1
Symptoms that are not malfunctions.............6-2
Engine Overheating.........................................6-3
No Battery Power.............................................6-4
Burnout of Fuse................................................6-6
Restart after Refueling.....................................6-8
Flashing of Warning Lamps............................6-9
Other Symptoms............................................6-10
Towing...........................................................6-12
Contents

0-6
Parameters.......................................7-1
Basic Parameters.............................................7-2
Overall Dimensions of Machine......................7-3
Operating Range..............................................7-4
Lifting power..................................................7-5
Accessories......................................8-1
General Safety Measures ..............................8-2
Precaution..........................................................8-5
Hydraulic Breaking Hammer ........................8-6
Optional accessories.....................................8.11
Parts number position..................................8-13

Safety
1-1

Safety
General Precautions
General Precautions
You are liable to abiding by the safety laws
and regulations of relevant departments and
fulfilling the operations, checking, and
maintenance of machine.
As a matter of fact, all accidents are caused by
the non-compliance with basic safety rules and
precautions.
Most accidents can be avoided by authenticating
the potential dangers in advance.
Please read and understand all safety
information related to the prevention of
accidents. Please ensure to operate the machine
only after you have understood how to operate,
check, and maintain the machine correctly.
Abiding by All Safety Regulations
1-2
●The machine must be operated, checked,
and maintained by trained and qualified
personnel.
●During the operations, checking, and
maintenance of machine, ensure to
understand and abide by all rules,
regulations, precautions, and safety
measures.
●Do not operate, check, or maintain the
machine under the adverse influence of
alcohol, drug, medicine, or fatigue or
under sleepy status.
Upon detection of machine abnormality
During the operations, checking, or
maintenance of machine, upon detection of any
machine abnormality (Such as noise, vibration,
smell, abnormal instrument, smoking or oil
leakage, error warning indication, and abnormal
display of electric control panel), immediately
notify a sales or service dealer and take
appropriate measure. Do not operate the
machine before the abnormality is solved.
Operating Temperature Range
To maintain the performances and prevent the
earlier wear of machine, please abide by the
following operating conditions.
●Do not operate the machine when the
outside temperature is more than+45℃ or
less than-15℃
The operations under+45℃ outside
temperature will probably result in engine
overheating and deteriorated engine
performance. In addition, the hydraulic oil
will probably become really hot to harm
the hydraulic devices.
The operations under 15℃ outside
temperature will probably harden the
rubber parts (Such as gaskets) and cause
earlier wear or damage of machine.
To operate the machine under the