Kubota zd 331 User manual

CONTENTS
SAFE OPERATION ................................................................................................. 1
SERVICING OF MACHINE ......................................................................................... 1
SPECIFICATIONS....................................................................................................... 3
IMPLEMENT LIMITATIONS ........................................................................................ 6
INSTRUMENT PANEL AND CONTROLS................................................................... 7
MOWER MOUNTING .................................................................................................. 9
MOUNTING THE MOWER DECK ........................................................................... 9
ADJUSTING THE MOWER ................................................................................... 10
DISMOUNTING THE MOWER DECK ................................................................... 10
OPERATING THE ENGINE....................................................................................... 11
MOUNT AND DISMOUNT MACHINE SAFELY..................................................... 11
STARTING THE ENGINE ...................................................................................... 11
Key Switch......................................................................................................................13
CHECK DURING OPERATING ............................................................................. 14
Immediately Stop the Engine if:...................................................................................... 14
Easy Checker (TM).........................................................................................................14
Fuel Valve, Fuel Gauge and Warning Lamp................................................................... 14
Coolant Temperature Gauge .......................................................................................... 15
Hour Meter......................................................................................................................16
COLD WEATHER STARTING ............................................................................... 16
BLOCK HEATER (OPTION) .................................................................................. 16
WARMING UP ....................................................................................................... 16
Warm-up and Transmission Oil in the Low Temperature Range....................................16
JUMP STARTING .................................................................................................. 17
STOPPING THE ENGINE...................................................................................... 18
Engine Stop Lever (Inside the Hood)..............................................................................18
OPERATING THE MACHINE.................................................................................... 19
OPERATING NEW MACHINE ............................................................................... 19
Changing Lubricating Oil for New Machines...................................................................19
Engine Break-in .............................................................................................................. 19
Machine Break-in............................................................................................................ 19
OPERATING FOLDABLE ROPS ........................................................................... 20
To Fold the ROPS .......................................................................................................... 20
To Raise the ROPS to Upright Position..........................................................................21
Adjustment of Foldable ROPS........................................................................................ 21
STARTING ............................................................................................................. 22
Operator's Seat............................................................................................................... 22
Seat Belt ......................................................................................................................... 23
Hydraulic Lift Control Pedal ............................................................................................ 23
Throttle Lever..................................................................................................................23
Parking Brake Pedal.......................................................................................................24
Motion Control Lever ......................................................................................................24
FIXING FRONT AXLE............................................................................................ 27

CONTENTS
OSCILLATING FRONT AXLE................................................................................ 27
WORK LIGHT (OPTIONAL KIT) ............................................................................ 27
STOPPING............................................................................................................. 27
PARKING ............................................................................................................... 28
TRANSPORTING................................................................................................... 28
OPERATING THE MOWER ...................................................................................... 29
MAKING THE MOST OF YOUR MOWER............................................................. 29
ADJUSTING CUTTING HEIGHT ........................................................................... 29
OPERATING MOWER........................................................................................... 32
PTO Lever ......................................................................................................................32
Starting ........................................................................................................................... 32
TIRES AND WHEELS ............................................................................................... 33
TIRES..................................................................................................................... 33
Inflation Pressure............................................................................................................ 33
WHEELS ................................................................................................................ 33
Remove and Install Front Caster Wheels.......................................................................34
MAINTENANCE......................................................................................................... 35
SERVICE INTERVALS .......................................................................................... 35
PERIODIC SERVICE CHART LABEL ................................................................... 37
LUBRICANTS ........................................................................................................ 38
PERIODIC SERVICE................................................................................................. 40
HOW TO OPEN THE HOOD, FRONT COVER & STEP ....................................... 40
Hood ............................................................................................................................... 40
Front Cover.....................................................................................................................40
Step ................................................................................................................................ 40
HOW TO RAISE THE OPERATOR'S SEAT.......................................................... 41
HOW TO TILT UP THE MACHINE ........................................................................ 42
HOW TO OPEN THE LEVER GUIDE.................................................................... 43
LIFT-UP POINT...................................................................................................... 44
Front side:....................................................................................................................... 44
Rear side: ....................................................................................................................... 44
DAILY CHECK ....................................................................................................... 44
Checking Engine Oil Level.............................................................................................. 45
Checking Amount of Fuel and Refueling ........................................................................46
Checking and Cleaning Radiator Screen and Bonnet Screen to Prevent Overheating.. 46
Checking Tire Pressure .................................................................................................. 47
Inflation Pressure............................................................................................................ 47
Checking Transmission Fluid Level................................................................................48
Checking Coolant Level.................................................................................................. 48
Lubricating All Grease Fittings........................................................................................49
EVERY 50 HOURS ................................................................................................ 49
Safety Devices................................................................................................................ 49
Checking Gear Box Oil Level..........................................................................................50
Greasing ......................................................................................................................... 51
Oiling............................................................................................................................... 52
EVERY 100 HOURS .............................................................................................. 53
Cleaning Air Cleaner Primary Element ........................................................................... 53
Checking Fuel Lines and Fuel Filter ...............................................................................53

CONTENTS
Adjusting Fan Drive Belt Tension ...................................................................................54
Adjusting Parking Brake ................................................................................................. 54
Battery Condition ............................................................................................................ 56
EVERY 150 HOURS .............................................................................................. 57
Changing Gear Box Oil...................................................................................................57
EVERY 200 HOURS .............................................................................................. 58
Changing Engine Oil.......................................................................................................58
Replacing Engine Oil Filter Cartridge .............................................................................58
Checking Radiator Hose and Clamp .............................................................................. 59
Checking Hydraulic Hose ............................................................................................... 59
Replacing HST Transmission Oil Filter Cartridge ........................................................... 60
Adjusting the Motion Control Lever Pivot........................................................................60
Adjusting Front Axle Pivot...............................................................................................61
Checking Intake Air Line.................................................................................................61
EVERY 400 HOURS .............................................................................................. 61
Changing Transmission Fluid and Rear Axle Gear Case Oil (RH & LH) ........................ 61
Replacing Hydraulic Oil Filter Cartridge..........................................................................62
Replacing Fuel Filter....................................................................................................... 63
EVERY 1500 HOURS ............................................................................................ 63
Checking Fuel Injection Nozzle (Injection Pressure) ......................................................63
EVERY 3000 HOURS ............................................................................................ 63
Checking Injection Pump................................................................................................63
EVERY 1 YEAR ..................................................................................................... 63
Replacing Air Cleaner Primary Element and Secondary Element..................................63
Flush Cooling System and Changing Coolant................................................................64
Anti-freeze ...................................................................................................................... 65
EVERY 2 YEARS................................................................................................... 66
Replacing Hydraulic Hose .............................................................................................. 66
Replacing Fuel Lines ...................................................................................................... 66
Replacing Radiator Hose................................................................................................ 66
Replacing Mower Gear Box Oil-Seal..............................................................................66
Replacing Intake Air Line................................................................................................66
SERVICE AS REQUIRED...................................................................................... 66
Replacing Fuses ............................................................................................................. 66
Checking and Replacing Blade.......................................................................................67
Mower Belt Replacement................................................................................................69
Bleeding Fuel System.....................................................................................................69
ADJUSTMENT........................................................................................................... 70
MOTION CONTROL LEVER ................................................................................. 70
HST NEUTRAL............................................................................................................... 70
MOTION CONTROL LEVER NEUTRAL POSITION ...................................................... 71
MAXIMUM SPEED (FORWARD) ...................................................................................71
MOTION CONTROL LEVER ALIGNMENT .................................................................... 71
MOWER DECK LEVEL.......................................................................................... 72
ANTI-SCALP ROLLERS................................................................................................. 72
LEVEL MOWER DECK (Side-to-Side) ........................................................................... 73
LEVEL MOWER DECK (Front-to-Rear) ......................................................................... 74
GENERAL TORQUE SPECIFICATION ................................................................. 76
TIGHTENING TORQUE CHART ........................................................................... 77
STORAGE ................................................................................................................. 78

CONTENTS
MACHINE STORAGE ............................................................................................ 78
REMOVING THE MACHINE FROM STORAGE.................................................... 78
TROUBLESHOOTING............................................................................................... 79
ENGINE TROUBLESHOOTING ............................................................................ 79
BATTERY TROUBLESHOOTING ......................................................................... 80
MACHINE TROUBLESHOOTING ......................................................................... 80
MOWER TROUBLESHOOTING............................................................................ 81

1SAFE OPERATION
SAFE OPERATION
Careful operation is your best insurance against an
accident. Read and understand this manual carefully
before operating the machine. All operators, no matter
how much experience they may have had, should read
this and other related manuals before operating the
machine or any implement attached to it. It is the owner's
obligation to instruct all operators in safe operation.
This mowing machine is capable of amputating hands and
feet and throwing objects. Failure to observe the following
safety instructions could result in serious injury or death.
1. The ZERO TURN MOWING MACHINE has different
steering characteristics than other machines with a
steering wheel and does not have a service brake
pedal (but, has a parking brake lock pedal that can be
used to stop the machine in an emergency. Normal
slowing down and stopping is done with the motion
control levers.). Read and understand the operators
manual before operating the machine. Practice
operating machine at low engine speed without mower
engaged in an unobstructed area.
2. Know your equipment and its limitations. Read all
instructions in this manual before attempting to start
and operate the machine.
3. Pay special attention to the warning, caution and
danger labels on the machine itself.
4. KUBOTA recommends the use of a 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 machine be
upset.
The machine is equipped with a Foldable ROPS,
which may be temporarily folded down only when
absolutely necessary for areas with height constraints.
(There is no operator protection provided by the ROPS
in the folded position. For operator safety the ROPS
should be placed in the upright and locked position
and the seat belt fastened for all other operations.)
If the ROPS is loosened or removed for any reason,
make sure that all parts are reinstalled correctly before
operating the machine.
Never modify or repair a ROPS because welding,
bending, drilling, grinding, or cutting may weaken the
structure.
A damaged ROPS structure must be replaced, not
repaired or revised.
If any structural member of the ROPS is damaged,
replace the entire structure at your local KUBOTA
Dealer.
5. Always use the seat belt when the ROPS are upright.
Do not use the seat belt if the ROPS is down or if there
is no ROPS. Check the seat belt regularly and replace
if frayed or damaged.
6. Do not operate the machine or any attachments while
under the influence of alcohol, medication, controlled
substances or when fatigued.
7. Do not wear loose, torn, or bulky clothing around
machine. The clothing may catch on moving parts or
controls, leading to the risk of accident. Wear and use
any additional safety items such as hard hat, safety
boots or shoes, eye and hearing protection, gloves,
etc. As appropriate or required.
8. Do not wear radio or music headphones while
operating the machine.
Safe operation requires your full attention.
9. Carefully check the vicinity before operating machine
or any implement attached to it. Clear the work area of
objects (wires, rocks, etc.) that might be picked up and
thrown. Check for overhead clearance which may
interfere with a grass catcher.
10.Check brakes and other mechanical parts for correct
adjustment and wear. Replace worn or damaged parts
promptly. Check the tightness of all nuts and bolts
regularly. (For further details, see "PERIODIC
SERVICE" and "ADJUSTMENT" section.)
11.Keep all shields and guards in place. Replace any that
are damaged or missing.
12.Before allowing other people to use your machine,
explain how to operate and have them read this
manual before operation.
13.Do not allow any bystanders around or near machine
during operation.
1. BEFORE OPERATING
(1) ROPS
(2) Seat belt