Kubota M6S-111 User manual

English (U.S.A.)
Code No. 3N840-9971-5
M6L-111
M6S-111MODELS
OPERATOR'S MANUAL
1NHDS00050A01
M6H-101
1NHDS00001A01
1NHDS00051A01
© KUBOTA Corporation 2017
PRINTED IN JAPAN
READ AND SAVE THIS MANUAL
M6S
111·M6L
111·M6H
101
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-

KUBOTA Corporation is ···
Since its inception in 1890, KUBOTA Corporation has grown to
rank as one of the major firms in Japan.
To achieve this status, the company has through the years
diversified the range of its products and services to a remarkable
extent. 30 plants and 35,000 employees produce over 1,000
different items, large and small.
All these products and all the services which accompany them,
however, are unified by one central commitment. KUBOTA makes
products which, taken on a national scale, are basic necessities.
Products which are indispensable. Products which are intended to
help individuals and nations fulfill the potential inherent in their
environment. KUBOTA is the Basic Necessities Giant.
This potential includes water supply, food from the soil and from
the sea, industrial development, architecture and construction, and
transportation.
Thousands of people depend on KUBOTA's know-how, technology,
experience and customer service. You too can depend on
KUBOTA.
M6S-111, M6L-111, M6H-101
AW . H . 3 - 3 . 6 . AK
Abbreviations Definitions
ABBREVIATION LIST
2 Wheel Drive
4 Wheel Drive
American Petroleum Institute
American Society of Agricultural and Biological Engineers, USA
American Society for Testing and Materials, USA
Deutsches Institut für Normung, GERMANY
Diesel Exhaust Fluid
Diesel Particulate Filter
Dual Traction [4WD]
Feet Per Minute
Glide Shift Transmission
High Speed-Low Speed
Hydrostatic Transmission
Meters Per Second
Power Take Off
Right-hand and left-hand sides are determined by facing
in the direction of forward travel
Roll-Over Protective Structures
Revolutions Per Minute
Revolutions Per Second
Society of Automotive Engineers, USA
Selective Catalytic Reduction
Slow Moving Vehicle
2WD
4WD
API
ASABE
ASTM
DIN
DEF
DPF
DT
fpm
GST
Hi-Lo
HST
m/s
PTO
RH/LH
ROPS
rpm
r/s
SAE
SCR
SMV
California Proposition 65
WARNING
Engine exhaust, some of its constituents,
certain vehicle components and fluids,
contain or emit chemicals known to the
State of California to cause cancer and birth
defects or other reproductive harm.
Canadian Electromagnetic Compatibility (EMC):
This machine complies with Industry Canada ICES-002.

UNIVERSAL SYMBOLS
As a guide to the operation of your tractor, various universal symbols have been utilized on the instruments and controls.
The symbols are shown below with an indication of their meaning.
BGeneral
Safety alert symbol
Master system warning
Fast
Slow
Creep
Lock
BEngine-related
Diesel fuel
Fuel level
Hourmeter/elapsed operating hours
Engine coolant-temperature
Low temperature regulation
Engine intake/combustion air-filter
Engine oil-pressure
Water separator
Engine-warning
Engine-rotational speed
Engine-Rev Limiter
Engine-Constant RPM Management
Engine-over speed
Engine-RPM increase
Engine-run
Engine-start
Engine-stop
Electrical power-accessories
Diesel preheat/glow plugs
(low temperature start aid)
Emission control
Regeneration
Regeneration inhibit
Regeneration (switch)
Parked regeneration
DEF/AdBlue®-level
DEF/AdBlue®-low level
DEF/AdBlue®-poor quality
DEF/AdBlue®-trouble
DEF/AdBlue®-thawing
BVehicle body-related
4-wheel drive-on
4-wheel drive-off
4-wheel drive-on
Swing shift-high
Swing shift-low
Clutch
Brake
Parking brake
Differential lock
Steering wheel-tilt

PTO-off (disengaged)
PTO-on (engaged)
PTO-540 rpm
PTO-1000 rpm
BHydraulic-related
Draft control-shallow position
Draft control-deep position
Position control-raised position
Position control-lowered position
3-Point lowering speed control
Remote cylinder-retract
Remote cylinder-extend
BElectric-related
Battery charging condition
Headlight-low beam
Headlight-high beam
Turn signal
Hazard warning lights
Audible warning device

FOREWORD
SAFETY FIRST
IMPORTANT :
NOTE :
DANGER :
WARNING :
CAUTION :
Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in minor or moderate injury.
Indicates that equipment or property damage could result if
instructions are not followed.
Gives helpful information.
You are now the proud owner of a KUBOTA tractor. This tractor is a product of
KUBOTA quality engineering and manufacturing. It is made of fine materials and
under a rigid quality control system. It will give you long, satisfactory service. To
obtain the best use of your tractor, please read this manual carefully. It will help you
become familiar with the operation of the tractor and contains many helpful hints
about tractor maintenance. It is KUBOTA's policy to utilize as quickly as possible
every advance in our research. The immediate use of new techniques in the
manufacture of products may cause some small parts of this manual to be
outdated. KUBOTA distributors and dealers will have the most up-to-date
information. Please do not hesitate to consult with them.
This symbol, the industry's safety alert symbol, is used throughout this manual and
on labels on the machine itself to warn of the possibility of personal injury. Read
these instructions carefully. It is essential that you read the instructions and safety
regulations before you attempt to assemble or use this unit.

CONTENTS
SAFE OPERATION......................................................................................................................9
SERVICING OF TRACTOR .......................................................................................................25
WARRANTY........................................................................................................................................................ 26
SCRAPPING THE TRACTOR AND ITS PROCEDURE ..................................................................................... 26
SPECIFICATIONS......................................................................................................................27
SPECIFICATION TABLE (M6S-111) ................................................................................................................... 27
SPECIFICATION TABLE (M6L-111) ................................................................................................................... 29
SPECIFICATION TABLE (M6H-101) .................................................................................................................. 31
TRAVELING SPEEDS (M6S-111)....................................................................................................................... 33
TRAVELING SPEEDS (M6L-111) ....................................................................................................................... 35
TRAVELING SPEEDS (M6H-101) ...................................................................................................................... 37
IMPLEMENT LIMITATIONS.......................................................................................................39
IMPLEMENT SPECIFICATION TABLE............................................................................................................... 41
INSTRUMENT PANEL AND CONTROLS .................................................................................43
SWITCHES AND HAND CONTROLS (ALL MODELS) ...................................................................................... 43
INSTRUMENT PANEL (ALL MODELS) .............................................................................................................. 44
FOOT AND HAND CONTROLS (M6S-111)........................................................................................................ 45
FOOT AND HAND CONTROLS (M6L-111)........................................................................................................ 46
FOOT AND HAND CONTROLS (M6H-101) ....................................................................................................... 47
PRE-OPERATION CHECK ........................................................................................................48
DAILY CHECK .................................................................................................................................................... 48
OPERATING THE ENGINE .......................................................................................................49
EXHAUST AFTERTREATMENT DEVICES........................................................................................................ 49
1. Dual exhaust aftertreatment devices ......................................................................................................... 49
DIESEL PARTICULATE FILTER (DPF) MUFFLER ............................................................................................ 49
1. Handling points.......................................................................................................................................... 49
2. DPF regeneration process......................................................................................................................... 50
3. Operating procedure for auto regeneration mode ..................................................................................... 51
3.1 PM warning level and required procedures........................................................................................ 52
4. Operating procedure for regeneration inhibit mode................................................................................... 53
4.1 PM warning level and required procedures........................................................................................ 54
5. Operating procedure for parked regeneration ........................................................................................... 55
6. Tips on diesel particulate filter (DPF) regeneration ................................................................................... 56
SELECTIVE CATALYTIC REDUCTION (SCR) MUFFLER ................................................................................. 56
1. Outline of the SCR..................................................................................................................................... 56
2. DEF/AdBlue®............................................................................................................................................. 56
3. Warning indication and countermeasures ................................................................................................. 57
3.1 SCR system inducement display on the LCD .................................................................................... 57
3.2 SCR system icon on inducement display........................................................................................... 57
3.3 Diagnostic trouble code (DTC)........................................................................................................... 57
3.4 SCR system inducement display and measures................................................................................ 59
4. Storing and handling DEF/AdBlue®........................................................................................................... 62
STARTING THE ENGINE ................................................................................................................................... 62
1. Checking Easy Checker™ indicators ......................................................................................................... 64
OPERATING THE ENGINE IN FREEZING CONDITIONS................................................................................. 65
1. Antifrost heater for oil separator (if equipped) ........................................................................................... 65
2. Block heater (if equipped).......................................................................................................................... 65
3. Engine low temperature regulation............................................................................................................ 66
4. DEF/AdBlue® freeze warning .................................................................................................................... 66
STOPPING THE ENGINE................................................................................................................................... 66
M6S-111,M6L-111,M6H-101
1

WARMING UP THE ENGINE ............................................................................................................................. 66
1. Warm-up and transmission fluid at low temperature range ....................................................................... 67
JUMP STARTING ............................................................................................................................................... 67
OPERATING THE TRACTOR....................................................................................................68
OPERATING NEW TRACTOR ........................................................................................................................... 68
1. Do not operate the tractor at full speed for the first 50 hours .................................................................... 68
2. Changing lubricating oil for new tractors ................................................................................................... 68
BOARDING AND LEAVING THE TRACTOR ..................................................................................................... 68
OPERATING FOLDABLE ROPS ........................................................................................................................ 68
1. Folding the ROPS...................................................................................................................................... 69
2. Raising the ROPS to upright position ........................................................................................................ 70
3. Adjusting the foldable ROPS ..................................................................................................................... 71
STARTING THE TRACTOR................................................................................................................................ 72
1. Muffler (M6L-111) ...................................................................................................................................... 72
2. Operator's seat .......................................................................................................................................... 73
2.1 For M6S-111 and M6H-101................................................................................................................ 73
2.1.1 Mechanical suspension type...................................................................................................... 73
2.2 For M6L-111....................................................................................................................................... 73
2.2.1 Mechanical suspension type...................................................................................................... 73
3. Seat belt .................................................................................................................................................... 74
4. Tilt steering adjustment.............................................................................................................................. 74
5. Light switch................................................................................................................................................ 74
6. Turn signal switch and hazard light switch ................................................................................................ 75
7. Front work light switch ............................................................................................................................... 76
8. Horn button................................................................................................................................................ 76
9. Brake pedals (right and left) ...................................................................................................................... 76
10. Clutch pedal............................................................................................................................................. 77
11. Travel speed control ................................................................................................................................ 78
12. Main gear shift lever ................................................................................................................................ 81
13. Range gear shift lever ............................................................................................................................. 81
14. Hydraulic-shuttle shift lever ..................................................................................................................... 81
15. Dual speed shift switch (dual speed model).......................................................................................... 81
16. Clutch-off switch ...................................................................................................................................... 81
17. Creep lever .............................................................................................................................................. 82
18. Front-wheel drive lever ............................................................................................................................ 83
18.1 4WD Indicator .................................................................................................................................. 83
18.2 Front-wheel drive usage................................................................................................................... 84
19. Hand throttle lever ................................................................................................................................... 84
20. Foot throttle ............................................................................................................................................. 84
21. Parking brake lever.................................................................................................................................. 84
STOPPING THE TRACTOR ............................................................................................................................... 85
CHECK DURING DRIVING ................................................................................................................................ 85
1. Engine over-speed limiting indicator.......................................................................................................... 85
2. Easy Checker™ ........................................................................................................................................ 85
3. Fuel gauge................................................................................................................................................. 87
4. DEF/AdBlue® gauge.................................................................................................................................. 87
5. Coolant temperature gauge....................................................................................................................... 87
6. Tachometer................................................................................................................................................ 88
LCD MONITOR................................................................................................................................................... 88
1. Various setting mode ................................................................................................................................. 89
1.1 Clock setting....................................................................................................................................... 89
1.2 Setting the clock display ON/OFF ...................................................................................................... 90
1.3 Setting the tire circumference ............................................................................................................ 90
1.4 Setting the unit ................................................................................................................................... 91
1.5 Setting the PTO speed display........................................................................................................... 91
2. Performance monitor ................................................................................................................................. 92
ELECTRONIC ENGINE CONTROL.................................................................................................................... 93
2
M6S-111,M6L-111,M6H-101

1. RPM dual memory setting ......................................................................................................................... 93
2. Constant RPM Management control ......................................................................................................... 94
PARKING THE TRACTOR.................................................................................................................................. 95
OPERATING TECHNIQUES............................................................................................................................... 96
1. Differential lock .......................................................................................................................................... 96
2. Operating the tractor on a road ................................................................................................................. 97
3. Operating on slopes and rough terrain ...................................................................................................... 97
4. Transporting the tractor safely ................................................................................................................... 97
5. Directions for use of power steering .......................................................................................................... 98
6. Trailer electrical outlet................................................................................................................................ 98
7. Electrical outlet .......................................................................................................................................... 98
PTO ..........................................................................................................................................100
PTO OPERATION............................................................................................................................................. 100
1. PTO clutch control lever .......................................................................................................................... 100
2. PTO clutch indicator ................................................................................................................................ 100
3. PTO rpm display...................................................................................................................................... 101
4. 1000 rpm PTO shaft (if equipped) ........................................................................................................... 101
5. PTO shaft cover and shaft cap ................................................................................................................ 102
3-POINT HITCH AND DRAWBAR...........................................................................................103
3-POINT HITCH SETUP................................................................................................................................... 106
1. Selecting the holes of lower links ............................................................................................................ 106
2. Adjusting lateral float ............................................................................................................................... 106
3. Selecting the top link mounting holes ...................................................................................................... 106
4. Draft stopper............................................................................................................................................ 107
5. Drawbar ................................................................................................................................................... 107
6. Lifting rod (left)......................................................................................................................................... 107
7. Lifting rod (right) ...................................................................................................................................... 107
8. Top link .................................................................................................................................................... 108
9. Telescopic stabilizers............................................................................................................................... 108
10. Telescopic lower links ............................................................................................................................ 108
DRAWBAR........................................................................................................................................................ 109
1. Adjusting drawbar length ......................................................................................................................... 109
2. Swing drawbar......................................................................................................................................... 109
HYDRAULIC UNIT...................................................................................................................110
3-POINT HITCH CONTROL SYSTEM.............................................................................................................. 110
1. Draft stopper............................................................................................................................................ 110
2. Position control ........................................................................................................................................ 110
3. Draft control ............................................................................................................................................. 110
4. Mixed control ............................................................................................................................................111
5. Float control..............................................................................................................................................111
6. 3-point hitch lowering speed.....................................................................................................................111
REMOTE HYDRAULIC CONTROL SYSTEM....................................................................................................111
1. Remote control valve................................................................................................................................111
2. Remote control valve lever ...................................................................................................................... 112
3. Remote control valve coupler .................................................................................................................. 112
4. Flow control valve (option)....................................................................................................................... 113
4.1 Adjusting the flow rate...................................................................................................................... 113
4.2 Positions and advantages of the flow control valve ......................................................................... 113
5. Hydraulic control unit use-reference chart............................................................................................... 115
TIRES, WHEELS, AND BALLAST (M6S-111) ........................................................................116
TIRES................................................................................................................................................................ 116
1. Inflation pressure ..................................................................................................................................... 116
2. Dual tires ................................................................................................................................................. 116
WHEEL ADJUSTMENT .................................................................................................................................... 116
1. Front wheels-2WD................................................................................................................................... 116
M6S-111,M6L-111,M6H-101
3

2. Front wheels-4WD................................................................................................................................... 118
2.1 Front jack point................................................................................................................................. 118
3. Adjusting front wheel turning stopper bolt ............................................................................................... 118
4. Rear wheels............................................................................................................................................. 120
4.1 Rear jack point ................................................................................................................................. 122
BALLAST .......................................................................................................................................................... 122
1. Front ballast............................................................................................................................................. 122
1.1 Front end weights (option) ............................................................................................................... 122
2. Rear ballast ............................................................................................................................................. 122
2.1 Rear wheel weights (option)............................................................................................................. 122
2.2 Liquid ballast in rear tires ................................................................................................................. 123
OVERALL BALLAST......................................................................................................................................... 123
TIRES, WHEELS, AND BALLAST (M6L-111).........................................................................124
TIRES................................................................................................................................................................ 124
1. Inflation pressure ..................................................................................................................................... 124
2. Dual tires ................................................................................................................................................. 124
WHEEL ADJUSTMENT .................................................................................................................................... 124
1. Front wheels ............................................................................................................................................ 124
1.1 Front jack point................................................................................................................................. 125
2. Rear wheels............................................................................................................................................. 126
2.1 Rear jack point ................................................................................................................................. 127
2.2 Adjusting fender height .................................................................................................................... 127
BALLAST .......................................................................................................................................................... 128
1. Front ballast............................................................................................................................................. 128
1.1 Front end weights (option) ............................................................................................................... 128
2. Rear ballast ............................................................................................................................................. 128
2.1 Liquid ballast in rear tires ................................................................................................................. 128
TIRES, WHEELS, AND BALLAST (M6H-101)........................................................................129
TIRES................................................................................................................................................................ 129
1. Inflation pressure ..................................................................................................................................... 129
2. Dual tires ................................................................................................................................................. 129
WHEEL ADJUSTMENT .................................................................................................................................... 129
1. Front wheels ............................................................................................................................................ 130
1.1 Front jack point................................................................................................................................. 132
2. Adjusting front wheel turning stopper bolt ............................................................................................... 132
3. Rear wheels............................................................................................................................................. 133
3.1 Rear jack point ................................................................................................................................. 135
4. Handrails and auxiliary steps................................................................................................................... 135
BALLAST .......................................................................................................................................................... 135
1. Front ballast............................................................................................................................................. 135
1.1 Front end weights (option) ............................................................................................................... 136
2. Rear ballast ............................................................................................................................................. 136
2.1 Cast iron disc ................................................................................................................................... 136
2.2 Liquid ballast in rear tires ................................................................................................................. 136
MAINTENANCE.......................................................................................................................137
SERVICE INTERVALS...................................................................................................................................... 137
LUBRICANTS, FUEL AND COOLANT ............................................................................................................. 140
1. Biodiesel fuel (BDF) B0-B5...................................................................................................................... 144
PERIODIC SERVICE ...............................................................................................................145
WASTE DISPOSAL .......................................................................................................................................... 145
HOW TO OPEN THE HOOD ............................................................................................................................ 145
1. Hood ........................................................................................................................................................ 145
2. Side cover................................................................................................................................................ 145
DAILY CHECK .................................................................................................................................................. 146
1. Walk around inspection ........................................................................................................................... 146
4
M6S-111,M6L-111,M6H-101

2. Checking and refueling............................................................................................................................ 146
3. Checking antifrost heater for oil separator (if equipped).......................................................................... 147
4. Checking DEF/AdBlue® level and adding fluid ........................................................................................ 148
5. Checking water separator........................................................................................................................ 150
6. Checking engine oil level......................................................................................................................... 150
7. Checking transmission fluid level ............................................................................................................ 151
8. Checking coolant level............................................................................................................................. 151
9. Cleaning evacuator valve ........................................................................................................................ 152
10. Cleaning grill, radiator screen, oil cooler, fuel cooler, and battery mount .............................................. 152
10.1 Cleaning ......................................................................................................................................... 152
11. Checking DPF/SCR muffler ................................................................................................................... 152
12. Checking brake pedal............................................................................................................................ 153
13. Checking parking brake......................................................................................................................... 153
14. Checking gauges, meter and Easy Checker™...................................................................................... 153
15. Checking headlight, turn signal light, hazard light, and so on ............................................................... 154
16. Checking seat belt and ROPS............................................................................................................... 154
17. Checking movable parts ........................................................................................................................ 154
INITIAL 50 HOURS........................................................................................................................................... 154
1. Changing engine oil................................................................................................................................. 154
2. Replacing engine oil filter ........................................................................................................................ 154
EVERY 50 HOURS........................................................................................................................................... 154
1. Checking engine start system ................................................................................................................. 154
1.1 Preparation before testing................................................................................................................ 154
1.2 Testing switch for the main gear shift lever ...................................................................................... 154
1.3 Testing switch for PTO clutch control switch or lever ....................................................................... 154
1.4 Checking operator presence control (OPC) system......................................................................... 155
2. Checking wheel bolt torque ..................................................................................................................... 155
3. Checking tie-rod dust cover..................................................................................................................... 156
EVERY 100 HOURS......................................................................................................................................... 157
1. Lubricating grease fittings........................................................................................................................ 157
2. Cleaning air cleaner primary element...................................................................................................... 158
3. Adjusting fan belt tension ........................................................................................................................ 158
4. Adjusting brake pedal .............................................................................................................................. 159
4.1 Checking brake pedal free travel ..................................................................................................... 159
4.2 Checking brake pedal stroke............................................................................................................ 159
4.3 Checking equalizer working level (anti-imbalance device)............................................................... 160
5. Adjusting parking brake lever .................................................................................................................. 160
6. Checking battery condition ...................................................................................................................... 161
6.1 How to read indicator ....................................................................................................................... 161
6.2 Charging the battery......................................................................................................................... 162
6.3 Directions for battery storage ........................................................................................................... 162
EVERY 200 HOURS......................................................................................................................................... 162
1. Adjusting toe-in........................................................................................................................................ 162
1.1 Adjusting toe-in procedure ............................................................................................................... 163
2. Draining fuel tank water........................................................................................................................... 163
EVERY 400 HOURS......................................................................................................................................... 164
1. Cleaning water separator ........................................................................................................................ 164
2. Lubricating grease fitting (M6S-111 2WD only) ....................................................................................... 165
EVERY 500 HOURS......................................................................................................................................... 165
1. Changing engine oil................................................................................................................................. 165
2. Replacing engine oil filter ........................................................................................................................ 166
3. Replacing fuel filter .................................................................................................................................. 167
4. Replacing hydraulic oil filter..................................................................................................................... 167
5. Checking power steering line .................................................................................................................. 168
6. Checking radiator hose and clamp .......................................................................................................... 168
6.1 Overheating countermeasures......................................................................................................... 169
7. Checking fuel line .................................................................................................................................... 169
8. Checking intake air line ........................................................................................................................... 170
M6S-111,M6L-111,M6H-101
5

9. Checking oil cooler line............................................................................................................................ 171
EVERY 600 HOURS......................................................................................................................................... 171
1. Adjusting front axle pivot ......................................................................................................................... 171
2. Adjusting king-pin pivot............................................................................................................................ 172
3. Changing brake oil................................................................................................................................... 172
EVERY 1000 HOURS....................................................................................................................................... 172
1. Changing transmission fluid .................................................................................................................... 172
2. Changing front differential case oil .......................................................................................................... 173
3. Changing front axle gear case oil ............................................................................................................ 174
4. Adjusting engine valve clearance ............................................................................................................ 174
EVERY 1000 HOURS OR 1 YEAR................................................................................................................... 174
1. Replacing air cleaner primary element and secondary element.............................................................. 174
2. Checking exhaust manifold ..................................................................................................................... 174
EVERY 1500 HOURS....................................................................................................................................... 174
1. Checking fuel injection nozzle (active test).............................................................................................. 174
2. Checking DEF/AdBlue® injector tip ......................................................................................................... 174
3. Checking DEF/AdBlue® line .................................................................................................................... 174
4. Replacing oil separator element .............................................................................................................. 175
5. Checking positive crankcase ventilation (PCV) valve.............................................................................. 175
6. Checking and cleaning EGR cooler......................................................................................................... 176
EVERY 2000 HOURS OR 2 YEARS ................................................................................................................ 176
1. Flushing cooling system and changing coolant ....................................................................................... 176
2. Antifreeze ................................................................................................................................................ 177
EVERY 3000 HOURS....................................................................................................................................... 177
1. Checking turbocharger ............................................................................................................................ 177
2. Checking supply pump ............................................................................................................................ 177
3. Checking intake air heater....................................................................................................................... 177
4. Checking and cleaning EGR system ....................................................................................................... 177
5. Cleaning DPF muffler .............................................................................................................................. 178
6. Checking DEF/AdBlue® injector .............................................................................................................. 178
7. Replacing DEF/AdBlue® pump filter ........................................................................................................ 178
EVERY 9000 HOURS....................................................................................................................................... 180
1. Replacing DEF/AdBlue® tank filter .......................................................................................................... 180
EVERY 1 YEAR ................................................................................................................................................ 180
1. Checking antifrost heater for oil separator (if equipped).......................................................................... 180
2. Checking DPF differential pressure sensor pipe ..................................................................................... 180
3. Checking EGR pipe ................................................................................................................................. 180
EVERY 2 YEARS.............................................................................................................................................. 180
1. Cleaning master cylinder filter ................................................................................................................. 180
2. Replacing oil separator hose ................................................................................................................... 180
3. Replacing positive crankcase ventilation (PCV) valve hose.................................................................... 180
4. Replacing DPF differential pressure sensor hose ................................................................................... 180
5. Replacing EGR cooler hose .................................................................................................................... 180
6. Replacing brake hose.............................................................................................................................. 180
7. Replacing boost sensor hose .................................................................................................................. 181
EVERY 3 YEARS.............................................................................................................................................. 181
1. Replacing parking brake cable ................................................................................................................ 181
EVERY 4 YEARS.............................................................................................................................................. 181
1. Replacing radiator hose (water pipes)..................................................................................................... 181
2. Replacing fuel lines ................................................................................................................................. 181
3. Replacing intake air line .......................................................................................................................... 181
4. Replacing oil cooler line........................................................................................................................... 181
5. Replacing power steering line ................................................................................................................. 181
6. Replacing master cylinder kit................................................................................................................... 181
7. Replacing equalizer kit ............................................................................................................................ 181
8. Replacing brake seal 1 and 2 .................................................................................................................. 181
SERVICE AS REQUIRED................................................................................................................................. 181
1. Bleeding fuel system ............................................................................................................................... 181
6
M6S-111,M6L-111,M6H-101

2. Bleeding brake system ............................................................................................................................ 182
3. Draining clutch housing water ................................................................................................................. 182
4. Replacing fuses ....................................................................................................................................... 182
5. Replacing slow-blow fuses ...................................................................................................................... 184
6. Replacing light bulb ................................................................................................................................. 184
7. Replacing head lamp............................................................................................................................... 184
STORAGE................................................................................................................................186
TRACTOR STORAGE ...................................................................................................................................... 186
REMOVING THE TRACTOR FROM STORAGE.............................................................................................. 186
TROUBLESHOOTING.............................................................................................................187
ENGINE TROUBLESHOOTING ....................................................................................................................... 187
POWER TRAIN TROUBLE SHOOTING........................................................................................................... 189
OPTIONS .................................................................................................................................190
LIST OF OPTIONS ........................................................................................................................................... 190
INDEX.......................................................................................................................................191
M6S-111,M6L-111,M6H-101
7

8
M6S-111,M6L-111,M6H-101

SAFE OPERATION
Careful operation is your best insurance against an
accident.
Read and understand this manual carefully before
operating the tractor.
All operators, no matter how much experience they
may have, should read this and other related manuals
before operating the tractor or any implement attached
to it. It is the owner's obligation to instruct all operators
in safe operation.
BEFORE OPERATING THE
TRACTOR
Know your equipment and its limitations. Read this
entire manual before attempting to start and operate
the tractor.
1. General
• Pay special attention to the safety labels on the
tractor.
• Do not operate the tractor or any implement
attached to it while under the influence of alcohol,
medication, controlled substances or while fatigued.
• Before allowing other people to use your tractor,
explain how to operate and have them read this
manual before operation.
• Never wear loose, torn, or bulky clothing around
tractor. It may catch on moving parts or controls,
leading to the risk of an accident.
Use additional safety items, such as a hard hat,
safety boots or shoes, eye and hearing protection,
gloves and so on, as appropriate or required.
• Do not allow passengers to ride on any part of the
tractor at any time. The operator must remain in the
tractor seat during operation.
• Check brakes, clutch, linkage pins and other
mechanical parts for improper adjustment and
wear. Replace worn or damaged parts promptly.
Check the tightness of all nuts and bolts regularly.
(See MAINTENANCE on page 137.)
• Keep your tractor clean. Dirt, grease, and trash
build up may contribute to fires and lead to personal
injury.
• Use only implements meeting the specifications
listed in this manual or implements approved by
Kubota. (See IMPLEMENT LIMITATIONS on page
39.)
• Use proper weights on the front or rear of the
tractor to reduce the risk of upsets. When using the
front loader, put an implement or ballast on the 3-
point hitch to maintain proper balance and braking.
Follow the safe operating procedures specified in
the implement or attachment manual.
• The narrower the tread, the greater the risk of a
tractor upset. For maximum stability, adjust the
wheels to the widest practical tread width for your
application.
(See TIRES, WHEELS, AND BALLAST (M6S-111)
on page 116, TIRES, WHEELS, AND BALLAST
(M6L-111) on page 124 and TIRES, WHEELS,
AND BALLAST (M6H-101) on page 129.)
(1) Rear wheels (A) Tread width
• Do not modify the tractor. Unauthorized
modification may affect the function of the tractor,
which may result in personal injury.
2. CAB and ROPS
• KUBOTA recommends the use of a CAB or roll over
protective structures (ROPS) and seat belt in
almost all applications. This combination will reduce
the risk of serious injury or death, should the tractor
be upset. Check for overhead clearance which may
interfere with a CAB or ROPS.
• Set the parking brake and stop the engine. Remove
any obstructions that may prevent the ROPS from
raising or folding. Do not allow any bystanders near
the tractor. Always perform the adjustment from a
stable position at the rear of the tractor. Hold the
top of the ROPS securely when raising or folding.
Make sure that all pins are installed and locked.
• If the CAB or ROPS is loosened or removed for any
reason, make sure that all parts are reinstalled
correctly before operating the tractor.
• Never modify or repair any structural member of a
CAB or ROPS because welding, bending, drilling,
grinding, or cutting may weaken the structure.
• A damaged CAB or ROPS structure must be
replaced, not repaired or revised.
SAFE OPERATION
M6S-111,M6L-111,M6H-101
9

• If any structural member of the CAB or ROPS is
damaged, replace the entire structure at your local
KUBOTA Dealer.
• If the tractor is equipped with a foldable ROPS, it
may be temporarily lowered only when absolutely
necessary for areas with height constraints.
There is no operator protection provided by the
ROPS in the lowered position. For operator safety,
the ROPS should be placed in the upright and
locked position and the seat belt fastened for all
other operations.
• Always use the seat belt if the tractor has a CAB or
ROPS. Do not use the seat belt if the foldable
ROPS is down or if there is no ROPS. Check the
seat belt regularly and replace if frayed or
damaged.
(1) Seat belt
OPERATING THE TRACTOR
Operator safety is a priority. Safe operation, specifically
with respect to overturning hazards, entails
understanding the equipment and environmental
conditions at the time of use.
Some prohibited uses which can affect overturning
hazards include traveling and turning with implements,
loads carried too high and so on. This manual sets forth
some of the obvious risks, but the list is not, and cannot
be, exhaustive. It is the operator's responsibility to be
alert for any equipment or environmental condition that
could compromise safe operation.
1. Starting to operate the tractor
• Always sit in the operator's seat when starting
engine or operating levers or controls. Adjust seat
per instructions in the operating the tractor section.
Never start engine while standing on the ground.
• Before starting the engine, make sure that all levers
(including auxiliary control levers) are in their
neutral positions, that the parking brake is engaged,
and that both the clutch and the power take-off
(PTO) are disengaged or “OFF”. Fasten the seat
belt if the tractor has a CAB, a fixed ROPS or a
foldable ROPS in the upright and locked position.
• Do not start engine by shorting across starter
terminals or bypassing the safety start switch. The
machine may start in gear and move if the normal
starting circuitry is bypassed.
• Do not operate or idle the engine in a non-
ventilated area. Carbon monoxide gas is colorless,
odorless, and deadly.
• Check that the operator presence control (OPC)
system is functioning correctly before each time you
use the tractor.
Test the safety systems.
(See Checking engine start system on page 154.)
Do not operate unless they are functioning
correctly.
2. Working the tractor
• Pull only from the drawbar. Never hitch to axle
housing or any other point except the drawbar;
such arrangements will increase the risk of serious
personal injury or death due to a tractor upset.
M6S-111 and M6L-111
(1) Drawbar
M6H-101
(1) Drawbar
• For trailing PTO-driven implements, set the drawbar
to the towing position.
SAFE OPERATION
10
M6S-111,M6L-111,M6H-101

• Attach pulled or towed loads to the drawbar only.
• Keep all shields and guards in place. Replace any
that are missing or damaged.
• Avoid sudden starts. To avoid upsets, slow down
when turning, on uneven ground, and before
stopping.
• The tractor cannot turn with the rear-wheel or 4-
wheel differential locked and attempting to do so
could be dangerous.
• Do not operate near ditches, holes, embankments,
or other ground surface features which may
collapse under the tractor's weight. The risk of
tractor upset is even higher when the ground is
loose or wet. Tall grass can hide obstacles; walk the
area first to be sure.
• Watch where you are going at all times. Watch for
and avoid obstacles. Be alert at row ends, near
trees, and other obstructions.
• When working in groups, always let the others
know what you are going to do before you do it.
• Never try to get on or off a moving tractor.
• Always sit in the operator's seat when operating
levers or controls.
• Do not stand between tractor and implement or
trailed vehicle unless the parking brake is applied.
3. Safety for children
Tragedy can occur if the operator is not alert to the
presence of children. Children generally are attracted to
machines and the work they do.
• Never assume that children will remain where you
last saw them.
• Keep children out of the work area and under the
watchful eye of another responsible adult.
• Be alert and shut your machine down if children
enter the work area.
• Never carry children on your machine. There is no
safe place for them to ride. They may fall off and be
run over or interfere with your control of the
machine.
• Never allow children to operate the machine even
under adult supervision.
• Never allow children to play on the machine or on
the implement.
• Use extra caution when backing up. Look behind
and down to make sure area is clear before
moving.
4. Operating on slopes
Slopes are a major factor related to loss-of-control and
tip-over accidents, which can result in severe injury or
death. All slopes require extra caution.
• To avoid upsets, always back up steep slopes. If
you cannot back up the slope or if you feel uneasy
on it, do not operate on it. Stay off slopes too steep
for safe operation.
• Driving forward out of a ditch, mired condition or up
a steep slope increases the risk of rear rollovers.
Always back out of these situations. Extra caution is
required with 4-wheel drive models because their
increased traction can give the operator false
confidence in the tractor's ability to climb slopes.
• Keep all movement on slopes slow and gradual. Do
not make sudden changes in speed, direction or
braking, nor make sudden motions with the steering
wheel.
• Avoid disengaging the clutch or changing gears
when climbing or going down a slope. If on a slope,
disengaging the clutch or changing gears to neutral
could cause the loss of control.
• Special attention should be paid to the weight and
location of implements and loads as such will affect
the stability of the tractor.
• To improve stability on slopes, set the widest
possible wheel tread.
(See TIRES, WHEELS, AND BALLAST (M6S-111)
on page 116, TIRES, WHEELS, AND BALLAST
(M6L-111) on page 124 and TIRES, WHEELS, AND
BALLAST (M6H-101) on page 129.)
Follow the recommendations for proper ballasting.
• To avoid free wheeling:
– Do not shift the shuttle lever while on a slope.
– Stop completely by using the brakes and by
depressing the clutch pedal, then shift the
shuttle lever.
– Start off after selecting shuttle direction, by
releasing the clutch pedal.
• When driving down a slope, ensure that 4-wheel
drive is engaged to increase traction (if equipped).
5. Driving the tractor on the road
• Lock the 2 brake pedals together to help assure
straight-line stops. Uneven braking at road speeds
could cause the tractor to tip over.
SAFE OPERATION
M6S-111,M6L-111,M6H-101
11

M6S-111 and M6H-101
(1) Brake pedal (LH)
(2) Brake pedal (RH)
(3) Brake pedal lock
(A) Whenever traveling on the
road
M6L-111
(1) Brake pedal (LH)
(2) Brake pedal (RH)
(3) Brake pedal lock
(A) Whenever traveling on the
road
• Check the front-wheel engagement. The braking
characteristics are different between 2 and 4-wheel
drive. Be aware of the difference and use carefully.
• Always slow down the tractor before turning.
Turning at high speed may tip over the tractor.
• Make sure that the slow moving vehicle (SMV) sign
is clean and visible. Use hazard lights and turn
signals as required.
(1) SMV emblem
(2) Bracket
• On public roads use the SMV emblem and hazard
lights, if required by local traffic and safety
regulations.
• Observe all local traffic and safety regulations.
• Turn the headlights on. Dim them when meeting
another vehicle.
• Drive at speeds that allow you to maintain control at
all times.
• Do not apply the differential lock while traveling at
road speeds. The tractor may run out of control.
• Avoid sudden motions of the steering wheel as they
can lead to a dangerous loss of stability. The risk is
especially great when the tractor is traveling at road
speeds.
• Keep the ROPS in the upright position and wear the
seat belt when driving the tractor on the road.
Otherwise, you will not be protected in the event of
a tractor roll-over.
• Do not operate an implement while the tractor is on
the road. Lock the 3-point hitch in the raised
position.
• Do not ride or stand on the step during operation.
Riding or standing there could result in being
crushed under the rear tire due to slippage or the
step fracturing or being displaced by the unintended
load.
M6S-111
(1) Step
SAFE OPERATION
12
M6S-111,M6L-111,M6H-101

M6L-111
(1) Step
M6H-101
(1) Step
• When towing other equipment, use a safety chain
and place an SMV emblem on it as well.
(1) Safety chain
• Set the implement lowering speed lever in the
“LOCK” position to hold the implement in the raised
position.
(1) 3-point hitch lowering speed
knob
(A) “FAST”
(B) “SLOW”
(C) “LOCK”
PARKING THE TRACTOR
• Disengage the PTO, lower all implements to the
ground, place all control levers in their neutral
positions, set the parking brake, stop the engine,
remove the key from the ignition and lock the CAB
door (if equipped).
Leaving transmission in gear with the engine
stopped will not prevent tractor from rolling.
• Make sure that the tractor has come to a complete
stop before dismounting.
• Avoid parking on steep slopes. If at all possible,
park on a firm and level surface; if not, park across
a slope and chock the wheels.
Failure to comply with this warning may allow the
tractor to move and could cause injury or death.
OPERATING THE PTO
• Wait until all moving components have completely
stopped before getting off the tractor, connecting,
disconnecting, adjusting, cleaning, or servicing any
PTO driven equipment.
• Keep the PTO shaft cover in place at all times.
Replace the PTO shaft cap when the shaft is not in
use.
SAFE OPERATION
M6S-111,M6L-111,M6H-101
13

M6S-111 and M6L-111
(1) PTO shaft cover
(2) PTO shaft cap
(A) “NORMAL position”
(B) “RAISED position”
M6H-101
(1) PTO shaft cover
(2) PTO shaft cap
• Before installing or using PTO driven equipment,
read the manufacturer's manual and review the
safety labels attached to the equipment.
To prevent PTO driven equipment from improper or
unsafe use, select the lower speed (540 rpm)
unless the higher one is specifically recommended
as safe by the equipment manufacturer.
• When operating stationary PTO driven equipment,
always apply the tractor parking brake and place
chocks behind and in front of the rear wheels. Stay
clear of all rotating parts.
Never step over rotating parts.
USING 3-POINT HITCH
• Use the 3-point hitch only with equipment designed
for the appropriate category of 3-point hitch usage.
• When using a 3-point hitch mounted implement, be
sure to install the proper counterbalance weight on
the front of the tractor.
• To avoid injury from separation:
Do not extend the lift rod beyond the groove on the
threaded rod.
(1) Groove
SERVICING THE TRACTOR
Before servicing the tractor, park it on a firm, flat and
level surface, set the parking brake, lower all
implements to the ground, place the gear shift lever in
neutral, stop the engine and remove the key.
• Allow the tractor time to cool off before working on
or near the engine, muffler, radiator and so on.
• Do not remove radiator cap while coolant is hot.
When cool, slowly rotate cap to the first stop and
allow sufficient time for excess pressure to escape
before removing the cap completely. If the tractor
has a coolant recovery tank, add coolant or water to
the tank, not the radiator.
(See Checking coolant level on page 151.)
• Always stop the engine before refueling. Avoid
spills and overfilling. Use only approved fuels.
• Always use grounded refueling facilities.
• Do not smoke when working around battery or
when refueling. Keep all sparks and flames away
from battery and fuel tank. The battery presents an
explosive hazard, because it gives off hydrogen
and oxygen especially when recharging.
• Before “jump starting” a dead battery, read and
follow all of the instructions.
(See JUMP STARTING on page 67.)
• Keep first aid kit and fire extinguisher handy at all
times.
• Disconnect the battery's ground cable before
working on or near electric components.
• To avoid the possibility of battery explosion, do not
use or charge the refillable type battery if the fluid
level is below the [LOWER] (lower limit level) mark.
Check the fluid level regularly and add distilled
water as required so that the fluid level is between
the [UPPER] and [LOWER] levels.
• To avoid sparks from an accidental short circuit,
always disconnect the battery's ground cable (-)
first and reconnect it last.
SAFE OPERATION
14
M6S-111,M6L-111,M6H-101