Iseki TG6370 User manual

ISEKI TRACTORS
TG6370
TG6400
TG6490
MODELS:
TG6620
TG6670
Operator’s Manual
ENGLISH

TO OUR CUSTOMER
1
Thank you for purchasing an ISEKI tractor.
This operator’s manual provides the information necessary for operating and maintaining
your tractor safely and properly.
The contents are mainly composed of the following 2 items:
Safety instructions: Essential items which you should observe while operating
the tractor.
Technical instructions: Items which are necessary to operate, adjust and service the
tractor properly.
Before starting to operate the machine for the first time, you should read this operator’s
manual thoroughly and carefully until you are sufficiently familiar with the operation of the
machine in order to do jobs safely and properly. The manual should be regarded as part of
the machine, and should be kept in a handy place so you can refer to it when required. You
are advised to refer to it from time to time to refresh your understanding of the machine.
Your dealer has performed the pre-delivery service on your new machine.
He or she will discuss with you the operating and maintenance instructions given in this manu-
al, and instruct you in the proper and varied applications of this machine. Call on him or her at
any time when you have a question, or need equipment related to the use of your machine.
Paragraphs in the manual and labels on the machine are particularly
important information about safe operation to avoid accidents. You
should always keep precautions in mind and follow them during
operation.
Be sure to wear
personal protective equipment
during operation
In some of the illustrations used in this operator’s manual, panels or
guards may have been removed to clarity. Never operate the tractor
with these panels and guards removed.
If the removal of a shield is necessary to make a repair, it must be re-
placed before operation.
If you use a trailer, use a proper one which suits your tractor. Using an
improper trailer may cause serious accidents.
Never attempt to haul beyond the tractor’s capacity.
Follow strictly the instructions outlined in the operator’s manual of the mount-
ed or trailed machinery or trailer, and do not operate the combination tractor –
machine or tractor – trailer unless all instructions have been followed.
All information, illustrations, and specifications contained in this manual are based on
the latest information available at the time of publication. The right is reserved to make
changes at any time without notice.
TO OUR CUSTOMER

2

TABLE OF CONTENTS
3
TABLE OF CONTENTS
TO OUR CUSTOMER................................................1
TABLE OF CONTENTS.............................................3
SAFETY .....................................................................6
MACHINE PURPOSE............................................6
PERSONAL SAFETY INSTRUCTIONS.................6
MAKING YOUR TRACTOR A SAFE VEHICLE......7
How to Maintain Safety ......................................7
FOR SAFE OPERATION .......................................8
How to be a Safe Operator ................................8
When Another Person Operates Your
Machine..............................................................8
Before Operation................................................9
Starting Engine and Operating Tractor.............10
When Traveling ................................................10
Loading onto or Unloading from a Truck..........12
During Operation..............................................13
Inspection and Maintenance............................14
Storage.............................................................15
Dismantling and Disposal.................................15
MAINTENANCE OF THE ELECTRIC
SYSTEM...............................................................16
To Maintain Electric Wiring...............................16
To Handle the Battery.......................................16
To Handle Booster Cables ...............................17
SAFETY DECALS................................................18
Maintenance of Safety Decals .........................21
Location of Safety Decals ................................22
INTRODUCTION......................................................24
TRACTOR IDENTIFICATION ..................................25
STATUTORY PLATE ...........................................25
MODEL TYPE DESIGNATION.............................25
MODEL / SERIAL NUMBER ................................26
MAJOR COMPONENTS..........................................27
Rear ROPS Type..............................................27
Center ROPS Type...........................................28
CABIN Type......................................................29
OPERATION ............................................................30
INSTRUMENT PANEL .........................................34
Main Switch......................................................34
Indicator Light Array .........................................35
Tachometer ......................................................36
Liquid Crystal Display.......................................36
Fuel Gauge.......................................................36
Coolant Temperature Gauge............................37
Gear Shift Display (Dual Clutch Type)..............37
Engine Hourmeter............................................37
Display Select Switch.......................................38
Traveling Speed Indication...............................38
Rear PTO Speed Indication.............................38
Mid PTO Speed Indication...............................38
Fault Code Indication.......................................39
Horn Switch & Lamp Switches.........................40
Emergency Engine Stop Switch
(HST Type only) ...............................................41
CLUTCH PEDAL (STANDARD TYPE ONLY) ......41
BRAKES...............................................................41
Brake Pedals ...................................................41
Parking Brake Lever.........................................42
BREAK-IN PERIOD..............................................43
STARTING............................................................43
Pre-Start Inspection..........................................43
Normal Starting (Standard Type)......................44
Normal Starting (HST Type).............................45
Normal Starting (Dual Clutch Type)..................46
Restarting Warm Engine..................................47
Cold Weather Starting......................................47
Warm Up Period...............................................47
Operator Observations.....................................48
Starting Circuit For The Engine........................48
TRAVELING SPEED SELECTION
(STANDARD TYPE).............................................49
Engine Speed Control......................................49
Forward / Reverse Lever..................................49
Shift Levers ......................................................50
Changing the Traveling Speed.........................50

TG6370, 6400, 6490, 6620, 6670
4
TRAVELING SPEED SELECTION
(HST TYPE).........................................................52
Engine Speed Control......................................52
Forward / Reverse Lever..................................52
Shift Lever........................................................53
HST Pedal........................................................53
Cruise Control ..................................................54
Speed Adjustment............................................55
HST Stage Selection (TG6490 / 6620 / 6670)..55
TRAVELING SPEED SELECTION
(DUAL CLUTCH TYPE)........................................56
Engine Speed Control......................................56
Forward / Reverse Lever..................................56
Shift Levers ......................................................57
Changing the Traveling Speed.........................57
STOPPING TRACTOR (STANDARD TYPE) .......59
STOPPING TRACTOR (HST TYPE)....................60
STOPPING TRACTOR (DUAL CLUTCH TYPE)..61
DIFFERENTIAL LOCK.........................................62
4-WHEEL DRIVE..................................................62
POWER TAKE-OFF (PTO)...................................63
Rear PTO Shaft................................................63
Mid PTO Shaft..................................................64
PTO Switch & PTO Selectable Switch.............65
Rear PTO Selector Lever.................................66
Mid PTO Selector Lever...................................66
Rear PTO Operating Control............................67
Mid PTO Operating Control..............................67
3-POINT LINKAGE...............................................68
Position Control (Standard & HST Types)........68
Position Control (Dual Clutch Type).................69
3-Point Linkage................................................71
Attaching Implements.......................................73
Using Position Control......................................74
Using Draft Control...........................................75
Detaching Implements .....................................76
DRAWBAR...........................................................76
JOYSTICK OPERATION......................................77
Joystick Control Lever......................................77
Joystick Lockout...............................................77
Joystick Operation............................................78
EXTERNALAUXILIARY HYDRAULICS...............79
External Auxiliary Hydraulics Lever..................79
Hydraulic Valves...............................................79
ROLL OVER PROTECTIVE STRUCTURE
(ROPS).................................................................80
Rear ROPS Type..............................................80
Center ROPS Type...........................................80
REAR HITCH .......................................................81
COMFORTADJUSTMENTS................................83
Steering Column Tilt.........................................83
Tool Box............................................................83
SEAT & SUSPENSION ADJUSTMENT ...............84
COBO GT62 / M200.........................................84
GRAMMER MSG83 / 521 ................................84
GRAMMER MSG93 / 521 ................................85
KAB XH2 / P6...................................................85
FRONT LOADER FIXATION POINT....................86
FALLING OBJECTS PROTECTIVE STRUCTURE
(FOPS) & OPERATORS PROTECTION
STRUCTURE (OPS) FIXATION POINT...............86
Work with Crop Sprayers
(Risk of Hazardous Substances)......................86
TOWING...............................................................86
JACKING..............................................................87
EXTERNALAUXILIARY POWER SUPPLY
CONNECTOR......................................................88
Auxiliary Power Supply Connector...................88
7 Pins Socket ...................................................88
EDT CONNECTOR (TG6620 / 6670)...............88
INSTRUMENTS & CONTROLS & OPERATION
- CABIN TYPE - .......................................................89
OPENING / CLOSING DOORS ...........................90
LOCK / UNLOCK DOORS ...................................90
REAR WINDOW...................................................91
CORNER WINDOWS...........................................92
ROOM LAMP .......................................................92
WORK LAMPS.....................................................93
WIPER AND WASHER SWITCH .........................94
WASHER RESERVOIR........................................95
AIR CONDITIONER OPERATION.......................95
Fan Speed Control Switch ...............................95
Air Conditioner Button......................................96
Temperature Adjustment Lever ........................96
Ventilation Control Lever..................................96
Air Vents...........................................................97
Using the Cooling System................................98
Using the Heating System................................98
Using the Defrosting System............................98

TABLE OF CONTENTS
5
LUBRICATION & PERIODIC MAINTENANCE .......99
SPECIFICATIONS & CAPACITIES......................99
LUBRICATION / FILL POINTS
(TG6370 / 6400).................................................100
LUBRICATION / FILL POINTS
(TG6490 / 6620 /6670).......................................101
PERIODIC INSPECTION AND MAINTENANCE
TABLE................................................................102
SERVICE ACCESS............................................104
Opening / Closing Hood.................................104
Removing / Reinstalling Side Cover...............104
LUBRICATION DETAILS....................................105
Grease Fittings...............................................105
Engine Oil & Filter (TG6370 / 6400 / 6490)....105
Engine Oil & Filter (TG6620 / 6670)...............106
Transmission Oil & Filters ..............................107
Front Axle Oil..................................................108
COOLING SYSTEM...........................................109
Checking / Replenishing Coolant...................109
Flushing Radiator / Replacing Coolant...........109
Use of Anti-Freeze..........................................110
Cleaning of Radiator ......................................110
Fan Belt.......................................................... 111
ENGINE AIR CLEANER..................................... 112
Cleaning Air Cleaner / Vacuator Valve ..........112
FUEL SYSTEM (TG6370 / 6400 / 6490)............113
Fuel Filter ....................................................... 113
Air-Bleeding Fuel System...............................114
Fuel Tank Filler Cap .......................................114
Throttle Lever.................................................114
FUEL SYSTEM (TG6620 / 6670).......................115
Fuel Filter ....................................................... 115
Air-Bleeding Fuel System...............................116
Fuel Tank Filler Cap .......................................116
Throttle Lever.................................................116
ELECTRICAL SYSTEM......................................117
Battery............................................................117
Safety Switches..............................................119
Wiring / Fuse Arrangement.............................119
Fuse Location (Standard Type)......................120
Fuse Location (TG6400 / 6490
HST Type & Dual Clutch Type) ......................121
Fuse Location (TG6620 / 6670).....................122
Fuse Location (Cabin Type)...........................123
CLUTCH FREE-PLAYADJUSTMENT...............124
BRAKE ADJUSTMENT......................................124
WHEELS & TIRES .............................................125
Tire Inflation Pressures ..................................125
Wheel Bolt Torque..........................................125
Front Wheel Alignment...................................125
Front Wheel Spacing......................................126
Rear Wheel Spacing ......................................126
Steering Free-Play .........................................128
Front Axle End-Float (4WD)...........................128
CLUTCH HOUSING PLUG................................128
TORQUE CHART...............................................128
STORAGE..........................................................129
WASHING OF THE MACHINE...........................130
MAJOR CONSUMABLES LIST .........................131
ROPS Type ....................................................131
CABIN Type....................................................133
TROUBLESHOOTING...........................................135
ENGINE..............................................................135
CLUTCH.............................................................136
BRAKES.............................................................136
HYDRAULIC SYSTEM.......................................137
STEERING SYSTEM.........................................137
ELECTRICAL SYSTEM......................................137
HST SYSTEM (HST TYPE ONLY).....................138
FAULT CODE LIST.............................................138
SPECIFICATIONS..................................................139
ENGINE..............................................................139
TRANSMISSION................................................140
POWER TAKE OFF (PTO).................................140
HYDRAULIC SYSTEM.......................................141
ELECTRICAL SYSTEM......................................141
CAPACITIES......................................................142
TREAD WIDTH SETTING..................................142
GENERAL DIMENSIONS...................................143
Rear ROPS Type............................................143
Center ROPS Type.........................................145
CABIN Type....................................................146
AXLE LOADS & TIRE LOAD CARRYING
CAPACITY..........................................................149
NOISE DECLARATION......................................149
VIBRATION DECLARATION (78 / 764 / EEC)...150
FRONT WEIGHT................................................150
ATTACHMENT (OPTION)..................................150
INDEX.....................................................................152
WIRING DIAGRAM ...............................................155

TG6370, 6400, 6490, 6620, 6670
6
MACHINE PURPOSE
This machine is designed solely for use in customary agricultural and forestry use, for parks and grounds maintenance,
as well as for winter service. Use in any other way is considered as contrary to the intended use. Compliance with and
strict adherence to the conditions of operation, service, and repair as specified by the manufacturer, also constitute
essential elements of the intended use. This machine should be operated, serviced, and repaired only by persons who
are familiar with its particular characteristics and who are acquainted with the relevant safety procedures. Accident
prevention regulations, all other generally recognized regulations on safety and occupational medicine, and all road
traffic regulations must be observed at all times. Any arbitrary modifications carried out to this machine may relieve the
manufacturer of liability for any resulting damage or injury.
PERSONAL SAFETY INSTRUCTIONS
Whenever you see the words and symbols below, used in this operator’s manual and on decals, you MUST take note of
their instructions as they relate to personal safety.
SAFETY
DANGER: This symbol together with the
word DANGER indicates an imminently
hazardous situation that, if not avoided,
will result in DEATH OR VERY SERIOUS
INJURY.
WARNING: This symbol together with the
word WARNING indicates a potentially
hazardous situation that, if not avoided,
could result in DEATH OR VERY SERIOUS
INJURY.
CAUTION: This symbol together with
the word CAUTION is used to indicate a
potentially hazardous situation that, if not
avoided, may result in MINOR INJURY.
IMPORTANT: The word IMPORTANT is used to iden-
tify special instruction or procedures
which, if not strictly observed, could re-
sult in damage to, or destruction of the
machine, process or its surrounding.
NOTE: The word NOTE is used to indicate points of
particular interest for more efficient and con-
venient repair or operation.
Understand thoroughly the following precautions,
always keep them in mind before, during, and after
operation, and never take chances.
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SAFETY
7
MAKING YOUR TRACTOR A SAFE VEHICLE
How to Maintain Safety
(1) Never attempt to do the following:
• Modification of the structure of the tractor
• Installation of other type of engine
• Installation of tires of other than the original tire
size.
Any malfunctions or failures of the tractor due
to unauthorized modification are not covered
by the warranty.
(2) This machine cannot be driven on a public road
without authorization by a local government
agency, etc.
When transporting an unauthorized machine on a
public road, load it on a truck.
When traveling with an implement wider than the
tractor, put red caution markers such as flags (red
lamps at night) in the most visible locations on
both sides of the implements, and place a “SLOW
MOVING VEHICLE” sign in a place where it is
easily seen by other drivers. Operate the machine
carefully keeping in mind that the implement is
wider and may roll easily. If the implement can
be folded, fold it beforehand. If there are road or
railway crossings where the visibility is poor, you
should install on the machine a mirror to give a
view ahead of you so that you do not need to
move your machine too far into the intersection.
(3) When you travel on a road, you must turn work
lights off if the law requires it.
FIG. 1
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TG6370, 6400, 6490, 6620, 6670
8
FOR SAFE OPERATION
How to be a Safe Operator
(1) Familiarize yourself fully with machine controls by
studying the operator’s manual before using your
machine.
This operator’s manual should be regarded as
part of the machine. Suppliers of both new and
second-hand machines are advised to retain
documentary evidence that this manual was pro-
vided with the machine.
(2) Never allow persons listed below to operate the
machine.
If any work carried out by unauthorized persons as
below would cause accident of the machine.
• Persons with mental disease
• Persons who cannot operate the machine prop-
erly because of fatigue, illness, or drowsiness
from medication, etc.
• Pregnant women
• Young persons or children too young to legally
operate the machine.
Always be careful of your health by taking suit-
able rest breaks.
(3) Wear appropriate clothing and other protective
devices during operation.
• Protection of your head
Wear protective headgear such as a helmet,
especially when traveling on roads or handling
material above your head.
• Protection to avoid being caught in the machine.
Wear tight fitting clothing and headgear, be-
cause loose clothing or hair can get caught in
the moving parts of the machine.
• Protection from poisonous dust or gases
Be sure to wear a protective device to protect
the respiratory system, eyes, and skin when
handling poisonous chemicals on work with
such a crop sprayer, mounted or trailed.
• Protection of the ears
Wear ear plugs or take suitable countermeasures
to protect your ears when you must operate the
machine under extremely noisy conditions.
• Maintenance of protective devices
Periodically inspect protective devices to as-
sure that they are functioning properly. Use
them at all times.
When Another Person Operates Your Machine
When another person operates your machine, you
must explain how to operate and instruct him or her to
read this manual fully to avoid unexpected accident.
FIG. 2
FIG. 3
FIG. 4
FIG. 5
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SAFETY
9
Before Operation
(1) Set up an operation plan with sufficient time al-
lowance. A tight plan may result in unexpected
accidents when work has to be rushed.
(2) Inspect and service the machine periodically in ac-
cordance with the instructions given in the opera-
tor’s manual to maintain the machine in the best
condition.
Pay special attention to the controls, especially to
the brakes and clutch, and safety measures for the
machine when servicing it. If the machine functions
properly and performs normally, the chance of an
accident will be reduced greatly.
If safety devices are damaged or do not work,
please consult your ISEKI dealer.
(3) Before removing a safety devices, such as a
safety cover, be sure that the machine has
stopped completely. Never forget to replace the
removed part after servicing.
(4) Never refill fuel while the engine is running or it
is still hot. Keep away from open fires and never
smoke around a fuel tank or while fueling into the
machine. Never use open flames for illumination
when fueling the machine at night.
FIG. 6
FIG. 7
FIG. 8
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