Kubota BX231D Operator's Manual
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Kubota BX231D Operator's Manual

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U.S.A.
: KUBOTA TRACTOR CORPORATION
1000 Kubota Drive, Grapevine, TX 76051
Telephone : 888-4KUBOTA
Canada
: KUBOTA CANADA LTD.
5900 14th Avenue, Markham, Ontario, L3S 4K4, Canada
Telephone : (905)294-7477
France
: KUBOTA EUROPE S.A.S
19-25, Rue Jules Vercruysse, Z.I. BP88, 95101 Arɡenteuil Cedex, France
Telephone : (33)1-3426-3434
Italy
: KUBOTA EUROPE S.A.S Italy Branch
Via Grandi, 29 20068 Peschiera Borrome (MI) Italy
Telephone : (39)02-51650377
Germany
: KUBOTA (DEUTSCHLAND) GmbH
Senefelder Str. 3-5 63110 Rodɡau /Nieder-Roden, Germany
Telephone : (49)6106-873-0
U.K.
: KUBOTA (U.K.) LTD.
Dormer Road, Thame, Oxfordshire, OX9 3UN, U.K.
Telephone : (44)1844-214500
Spain
: KUBOTA ESPAÑA S.A.
Avenida Recomba No.5, Poliɡno Industrial la Laɡuna, Leɡanes, 28914 (Madrid) Spain
Telephone : (34)91-508-6442
Australia
: KUBOTA AUSTRALIA PTY LTD.
25-29 Permas Way, Truɡanina, VIC 3029, Australia
Telephone : (61)-3-9394-4400
Malaysia
: KUBOTA MALAYSIA SDN. BHD.
Lot 766, Jalan Subanɡ 4, off Persiaran Subanɡ Sunɡai Penaɡa Industrial Park, 
47500 Subanɡ Jaya
Telephone : (60)-3-7890-3533
Philippines : KUBOTA PHILIPPINES, INC.
232 Quirino Hiɡhway, Baesa, Quezon City 1106, Philippines
Telephone : (63)2-422-3500
Taiwan
: SHIN TAIWAN AGRICULTURAL MACHINERY CO., LTD.
16, Fenɡpinɡ 2nd Rd, Taliao Shianɡ Kaohsiunɡ 83107, Taiwan R.O.C.
Telephone : (886)7-702-2333
Indonesia : PT KUBOTA MACHINERY INDONESIA
Tower A at EiɡhtyEiɡht@Kasablanka Lantai 16
Jalan Raya Casablanka Kav. 88, Jakarta 12870 Indonesia
Telephone : (62)-21-29568-720
Thailand
: SIAM KUBOTA CORPORATION CO., LTD.
101/19-24 Moo 20, Navanakorn Industrial Estate, Tambon Khlonɡnuenɡ, Amphur Khlonɡluanɡ,
Pathumthani 12120, THAILAND
Telephone : (66)2-909-0300
Korea
: KUBOTA KOREA CO., LTD.
41-27, Jayumuyeok-ɡil, Baeksan-myeon, Gimje-si, Jeollabuk-do, Korea
Telephone : (82)-63-544-5822
India
: KUBOTA AGRICULTURAL MACHINERY INDIA PVT. LTD.
No.15, Medavakkam Road, Sholinɡanallur, Chennai-600119, T.N., India
Telephone : (91)44-6104-1500
Vietnam
: KUBOTA VIETNAM CO., LTD.
Lot B-3A2-CN, My Phuoc 3 Industrial Park, Thoi Hoa Ward, Ben Cat Town, Binh Duonɡ Province, Vietnam
Telephone : (84)-274-3577-507
KUBOTA Corporation
AY. L. 7-7. -. K
B
X
2
3
1
D
・
B
X
2
6
1
English (U.K.)
D
Code No. K2883-9701-6
©
KUBOTA Corporation 2017
OPERATOR'S MANUAL
AUX. valve equipped machine
READ AND SAVE THIS MANUAL
MODELS
BX231D
BX261D
1PPEP00001A01

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John
January 26, 2025

What is the maximum train weight or maximum weight that the tractor can tow?

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Mr. Anderson
February 10, 2025

The Kubota BX231D tractor should not be towed faster than 10 km/h (6.2 mph). However, the maximum towing capacity is not specified in the provided context.

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Summary of Contents for Kubota BX231D

  • Page 1 Pathumthani 12120, THAILAND Telephone : (66)2-909-0300 Korea : KUBOTA KOREA CO., LTD. 41-27, Jayumuyeok-ɡil, Baeksan-myeon, Gimje-si, Jeollabuk-do, Korea Telephone : (82)-63-544-5822 India : KUBOTA AGRICULTURAL MACHINERY INDIA PVT. LTD. No.15, Medavakkam Road, Sholinɡanallur, Chennai-600119, T.N., India Telephone : (91)44-6104-1500 Vietnam : KUBOTA VIETNAM CO., LTD. Lot B-3A2-CN, My Phuoc 3 Industrial Park, Thoi Hoa Ward, Ben Cat Town, Binh Duonɡ Province, Vietnam Telephone : (84)-274-3577-507 ・ KUBOTA Corporation 1PPEP00001A01 AUX. valve equipped machine English (U.K.) AY. L. 7-7. -. K Code No. K2883-9701-6 READ AND SAVE THIS MANUAL © KUBOTA Corporation 2017...
  • Page 2 Any arbitrary modifications carried out to this machine may relieve the manufacturer of liability for any resulting damage or injury. manufacturer or distributor of the machine Kubota Corporation the model designation of the machine BX231D, BX261D the name or type of publication Operator's Manual the part number or publication number by which K2883-9701-6...
  • Page 3 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. Safety Alert Symbol Slow Read Operator's Manual Fast Hour meter/Elapsed Operating Hours Brake...
  • Page 4 You are now the proud owner of a KUBOTA Tractor. This tractor is a product of KUBOTA's quality engineering and manufacturing. It is made of the excellent materials and under rigid quality control systems. It will give you long, satisfactory service.

  • Page 5: Table Of Contents

    2. Block heater (option) ..........................42 STOPPING THE ENGINE........................... 42 1. Engine stop lever (inside the bonnet) ......................42 WARMING UP OF THE ENGINE ........................42 1. Warm-up of the engine and transmission oil in the low temperature range..........43 BX231D...
  • Page 6 2. Lowering speed of 3-point hitch......................... 65 AUXILIARY HYDRAULIC CONTROL SYSTEM ....................66 1. How to use the auxiliary hydraulic control valve coupler ................66 2. Rear auxiliary hydraulic control lever......................66 AUXILIARY HYDRAULICS ..........................67 1. Hydraulic outlet ............................67 BX231D...
  • Page 7 8. Checking the gauges, the meters, and the Easy Checker ..............89 9. Checking the headlights, hazard lights, and so on ..................89 10. Checking the seat belt and the ROPS ..................... 89 11. Checking and cleaning the electrical wiring and the battery cables............89 BX231D...
  • Page 8 4. Replacing the intake air line ........................106 5. Replacing the engine breather hose......................106 SERVICE AS REQUIRED..........................106 1. Bleeding the fuel system ......................... 106 2. Replacing the fuse ........................... 107 3. Replacing the light bulb ........................... 108 BX231D...
  • Page 9 STORAGE OF THE TRACTOR ....................109 STORING THE TRACTOR ..........................109 REMOVING THE TRACTOR FROM STORAGE....................109 TROUBLESHOOTING ......................110 ENGINE TROUBLESHOOTING ........................110 OPTIONS ..........................111 OPTION ITEMS ..............................111 APPENDICES ..........................112 MAXIMUM MASSES............................112 1. Maximum permissible load ........................112 INDEX............................113 BX231D...
  • Page 10 BX231D...

  • Page 11: Safe Operation

    2. Precautions for CAB and ROPS Know your equipment and its limitations. Read this entire manual before starting and operating KUBOTA recommends the use of a CAB or roll-over- the tractor. protective-structures (ROPS), and seat belt in almost all applications. Combination of a CAB or ROPS and seat belt will reduce the risk of serious injury or death if 1.
  • Page 12 • Never try to get on or off a moving tractor. • Do not operate or idle the engine in a non- • Always sit in the operator's seat when you are ventilated area. Carbon monoxide gas is colourless, operating levers or controls. odourless, and deadly. BX231D...
  • Page 13 Otherwise, you will not be protected in the event of • Keep all movement of the tractor on slopes a tractor roll-over. slow and gradual. Do not change the speed or BX231D...
  • Page 14 • Avoid parking on steep slopes. If it is at all possible, park on a firm and level surface. If it is not at all possible to park on a firm and level surface, park across a slope and chock the wheels. BX231D...
  • Page 15 If the tractor equips a coolant-recovery-tank, add coolant or water to the coolant-recovery-tank. Do not add coolant to the radiator. (See Checking the coolant level on page 88) BX231D...
  • Page 16 Please dispose properly. • Do not work under any hydraulically supported See your local recycling centre or KUBOTA Dealer devices. They can settle, suddenly leak down, or to learn how to recycle or get rid of waste products.
  • Page 17 SAFE OPERATION PICTORIAL SAFETY LABELS BX231D...
  • Page 18 SAFE OPERATION BX231D...
  • Page 19 SAFE OPERATION BX231D...
  • Page 20 SAFE OPERATION BX231D...
  • Page 21 • Replace damaged or missing pictorial safety labels with new pictorial safety labels from your local KUBOTA Dealer. • If a component with pictorial safety label(s) attached is replaced with new component, make...
  • Page 22 BX231D...

  • Page 23: Servicing Of The Tractor

    For service, contact the KUBOTA Dealership from which you purchased your machine or your local KUBOTA Dealer. When in need of parts, be prepared to give your dealer the product identification number (PIN), and the CAB/ROPS and engine serial numbers.

  • Page 24: Scrapping The Tractor And Its Procedure

    SCRAPPING THE TRACTOR AND ITS PROCEDURE To put the tractor out of service, correctly follow the local rules and regulations of the country or territory where you scrap it. If you have questions, consult your local KUBOTA Dealer. BX231D...

  • Page 25: Specifications

    SPECIFICATION TABLE  SPECIFICATIONS SPECIFICATIONS SPECIFICATION TABLE Model BX231D BX261D 13.2 kW 14.5 kW PTO power (17.9 PS) (19.7 PS) Manufacturer KUBOTA Model D902 D1005 Type Liquid-cooled, 4-cycle diesel Number of cylinders Bore and stroke 72 × 73.6 mm 76 × 73.6 mm...
  • Page 26 ISO 7241-1 series B Type SAE 1-3/8, 6 splines Rear PTO Revolution STD (540 rpm) Type USA No. 5 (KUBOTA 10-tooth) involute spline Mid PTO Revolution STD (2500 rpm) 84.2 dB (A) (ROPS) 83.7 dB (A) (ROPS) Noise at the operator's ear 85.9 dB (A) (CAB)

  • Page 27: Traveling Speeds Table

    TRAVELING SPEEDS TABLE  SPECIFICATIONS TRAVELING SPEEDS TABLE Model BX231D BX261D Tyre size (Rear) 26×12.00-12 Speed control pedal Range gear shift lever (At max engine rpm) 0 km/h to 6.5 km/h Forward High 0 km/h to 14.0 km/h 0 km/h to 5.0 km/h...

  • Page 28: Implement Limitations

    Preceding implements may result in malfunctions or failures of the tractor, damage to other property, and injury to the operator or others. NOTE : KUBOTA does not cover any malfunctions or failures of the tractor resulting from use with improper implements by the warranty. Model...
  • Page 29 OPS, FOPS, however, are not available for this tractor. Without optional equipments such as OPS and FOPS, the use of the tractor is limited to tractor-specific-applications like transport and stationary work. Implement weight list Implement Remarks BX231D BX261D Max. cutting width 152 cm Mid-mount Max. weight 134 kg Max.

  • Page 30: Front Loader

    DANGER To avoid serious injury or death: • Pay special attention when lifting the load. Keep the bucket correctly positioned to prevent spillages. IMPORTANT : • Not all risks are listed. • Refer to the front loader operator’s manual. BX231D...

  • Page 31: Instrument Panel And Controls

    (12) Hazard light switch................. 29 (5) Head light switch................28 (13) Position light switch ............... 29 (6) Fuel gauge..................54 (14) Stationary PTO switch ..............30 (7) Coolant temperature gauge ............54 (15) Trailer electrical power socket............37 (8) Hour meter..................55 BX231D...

  • Page 32: Key Switch

    Turn the head-light-switch clockwise, and the following lights are activated on the position of the head-light- switch. (1) Head light (low beam) (4) Side marker light (2) Head light (high beam) (5) Direction indicator / Hazard (3) Rear light light BX231D...

  • Page 33: Direction Indicator Light Switch

    2. When pressing the hazard-light-switch again, the (1) Position light switch (A) Push on-off hazard lights turn off. NOTE : • The hazard-light-switch is operative when the key switch is in either on and off position. BX231D...

  • Page 34: Stationary Pto Switch

    1. To activate the beacon light, press the beacon-light- switch. (1) Bonnet (3) Key 2. To deactivate the beacon light, press the beacon- (2) Bonnet open shaft (A) Turn light-switch again. The beacon-light-switch is only operative, when the key switch is at the on position. BX231D...

  • Page 35: Foot And Hand Controls

    (17) Operator's seat ................32 (7) PTO clutch lever ................59 (18) Seat belt..................33 (8) Differential lock pedal ..............56 (19) Rear auxiliary hydraulic control lever..........66 (9) Speed set rod ................35 Speed set rod ................36 BX231D...

  • Page 36: Operator's Seat

    • To increase tension, turn the suspension-adjust- locked. lever clockwise. • Be sure that the operator's seat is out of contact • To decrease tension, turn the suspension-adjust- with the top link. lever anticlockwise. BX231D...

  • Page 37: Seat Belt

    • Engage the 4-wheel drive when travelling down a slope. To release the parking brake Depress the brake pedal again. 4. Emergency hand brake lever WARNING To avoid serious injury or death: • Do not use the emergency-hand-brake during normal operation. If the emergency-hand-brake BX231D...

  • Page 38: Range Gear Shift Lever (Hi-Lo)

    [N] position, you should attempt the following procedure. 1. Slightly depress the speed-control-pedal to rotate the gears inside of transmission. 2. Release the speed-control-pedal to the neutral [N] position. BX231D...

  • Page 39: Hand Accelerator Lever

    9. Speed set device The speed-set-device is designed for tractor-operating- efficiency and operator's comfort. The speed-set-device will provide a constant forward operating speed by mechanically holding the speed-control-pedal at a selected position. (1) Hand accelerator lever (B) Decrease (A) Increase BX231D...

  • Page 40: How To Use The Speed Set Device

    12 V electric power socket may speed-set-device is engaged. fail. NOTE : • If you step on the speed-control-pedal on the forward acceleration side, the speed-set-device will disengage. • The speed-set-device will operate reverse. (1) 12V electric power socket BX231D...

  • Page 41: Accessory Box

    When you keep valuables in the accessory box, be careful not to wet nor dirty it. 3. Trailer electrical power socket A trailer electrical power socket is supplied for use with a trailer or implement. (1) Trailer electrical power sock- BX231D...

  • Page 42: Pre-Operation Check

    • Checking the seat belt and ROPS • Checking the movable parts • Refuel (See Checking the amount of fuel and refuelling on page 86) • Care of safety labels (See Care for pictorial safety labels on page 17) BX231D...

  • Page 43: Operating The Engine

    (See ENGINE TROUBLESHOOTING on page 110.) STARTING THE ENGINE IMPORTANT : • Because of safety devices, the engine will not start except when the speed-control-pedal is in BX231D...
  • Page 44 (1) Auxiliary hydraulic control (A) Lock lever (2) Lock lever NOTE : • The speed-control-pedal automatically returns to the neutral position when the operator's foot is released from the speed- control-pedal. 5. Place the range-gear-shift-lever (Hi-Lo) in the neutral [N] position. BX231D...
  • Page 45 (1) Direction indicator/hazard (6) Low fuel indicator light (7) High beam (2) Preheat (8) Trailer (3) Electrical charge (9) Parking buzzer lamp (4) Engine oil pressure (10) Key switch (5) Coolant temperature indica- BX231D...

  • Page 46: Cold Weather Starting Of The Engine

    Then open the bonnet and turn engine stop lever (red -15 ℃ to -5 ℃ 10 sec. mark) and hold it until the engine stops. Then contact your local KUBOTA Dealer immediately. NOTE : • The preheat-indicator-lamp in the Easy ™...

  • Page 47: Warm-Up Of The Engine And Transmission Oil In The Low Temperature Range

    • If the tractor battery is frozen, do not jump start the engine. • Do not connect other end of negative (-) jumper cable to negative (-) terminal of the tractor battery. BX231D...
  • Page 48 Start the disabled tractor. 10. Disconnect the jumper cables in the exact reverse order of attachment. See the steps in order of step 8., step 7., and step 11. Install back the panel screen and battery holder. BX231D...

  • Page 49: Operating The Tractor

    If interference PRECAUTIONS FOR GETTING occurs, contact your KUBOTA Dealer. ON AND OFF THE TRACTOR • Never try to get on or off a moving tractor or to jump off the tractor to exit.

  • Page 50: Model Of The Rops With Damper

    (1) Set pins (2) Snap pins 3. Fold the ROPS. CAUTION To avoid personal injury: • Hold the ROPS tightly with both hands and (1) Set pins (2) Snap pins fold the ROPS slowly and carefully. BX231D...

  • Page 51: Raising The Rops With Damper To The Upright Position

    ROPS is in the upright position and secured with the snap (1) Holding knob bolts pins. 2. Remove both set pins. (1) Set pins (2) Snap pins (1) Set pins (2) Snap pins 4. Tighten the holding-knob-bolts. BX231D...

  • Page 52: Raising The Rops Without Damper To The Upright Position

    (1) Set pins (2) Snap pins (1) Set pins (2) Snap pins 2.2 Raising the ROPS without damper to the upright position 1. Remove both snap pins and set pins. BX231D...

  • Page 53: Adjusting The Foldable Rops

    [Deluxe (Air suspension)] (1) Nut STARTING THE TRACTOR 1. Adjust the operator's position and engage the seat belt. (See Operator's seat on page 32 and Seat belt on page 33) BX231D...
  • Page 54 (1) Tilt lever (A) Pull 3. Select the positions of the light switches. (See Head light switch on page 28, Direction indicator light switch on page 29, Hazard light switch on page 29, and Position light switch on page 29) BX231D...
  • Page 55 • Read and understand Safe operation in this manual. • Read and understand the safety labels located on the tractor. • To avoid the danger of exhaust fume poisoning, do not operate the engine in a closed building without proper ventilation. BX231D...

  • Page 56: Stopping The Tractor

    (1) Speed control pedal (B) Off (2) Speed set rod (A) On (1) Range gear shift lever (Hi- (B) Neutral position (C) High (A) Low STOPPING THE TRACTOR 1. Slow the engine down. 2. Depress the brake pedal. BX231D...

  • Page 57: Check During Driving

    (2) Fuel gauge (5) Tachometer (3) Coolant temperature gauge ™ • Easy Checker ™ (See Easy Checker on page 53) • Fuel gauge (See Fuel gauge on page 54) • Coolant temperature gauge (See Coolant temperature gauge on page 54) BX231D...

  • Page 58: Fuel Gauge

    (4) Electrical charge (11) Key switch returns to the most bottom position, consult (5) Engine oil pressure your local KUBOTA Dealer. (6) Coolant temperature indica- Once you turn off the key switch and the fuel- gauge-system returns to normal, the needle ™...

  • Page 59: Dealing With The Overheated Coolant Temperature

    If the needle of the coolant-temperature-gauge returns to the most The step that the display Tractor operated hours bottom position, consult your KUBOTA Dealer. operates From 0.0 Hr to 9999.9 Hr every 0.1 Hr step 2.4 Dealing with the overheated coolant...

  • Page 60: Parking The Tractor

    (See Hydraulic control on page 65) To avoid serious injury or death due to loss of steering control: • Do not operate the tractor at high speed with the differential lock engaged. • Do not turn with the differential lock engaged. BX231D...

  • Page 61: Precautions For Operating The Tractor On A Road

    – Set the all shift levers to their neutral position. – If possible, start the engine and select 2WD. – Tow the tractor using its front hitch or drawbar. – Never tow the tractor faster than following speed. BX231D...

  • Page 62: Directions For Use Of The Power Steering

    • Avoid turning the steering wheel while the tractor is stopped, or tyres may wear out sooner. • The power-steering-mechanism makes the steering easier. Be careful when driving on a road at high speeds. BX231D...

  • Page 63: Power Take-Off (Pto)

    PTO clutch. See the following figure. Mid PTO To use the mid PTO, shift the PTO-select-lever to the mid PTO position and the PTO-clutch-lever to the position. The mid PTO is available for KUBOTA approved implements. BX231D...

  • Page 64: Pto Shaft Cover And Pto Shaft Cap

    (1) Stationary PTO switch (A) Push on-off the PTO Drive Shaft Instructions for proper use. 5. Set the PTO-clutch-lever to the on (engage) Keep the PTO-shaft-cover in place at all times. Keep position. the PTO-shaft-cap when the PTO is not in use. BX231D...

  • Page 65: Pto Drive Shaft

    • If it is necessary for using the PTO-drive-shaft, adjust the length of it. (See Adjusting the length of PTO drive shaft on page 61) • Make sure that the PTO-drive-shaft is securely connected at both ends before operating it. BX231D...

  • Page 66: 3-Point Hitch And Drawbar

    (5) Lower link (7) Lifting rod (right) (2) Lifting rod (left) (4) Turnbuckle (6) Top link bracket (8) Drawbar Use the holder plate to hold the lower link higher while mowing with mid-mount mower only over uneven terrain. (9) Holder plate BX231D...

  • Page 67: 3-Point Hitch

    Pulling from the top link, the rear axle, or any point above the drawbar could cause the tractor to tip over rearward causing personal injury or death. (1) Adjusting turnbuckle (A) Groove (2) Lock nut BX231D...
  • Page 68  3-POINT HITCH AND DRAWBAR (1) PTO shaft cap (3) Drawbar pin (2) Drawbar BX231D...

  • Page 69: Hydraulic Unit

    3. Operate the engine at low idle speed for Contact your KUBOTA Dealer for adjustment. the following seconds to bleed air from the system. Operating the hydraulic control lever actuates the...

  • Page 70: Auxiliary Hydraulic Control System

    4. Pull the implement couplers slightly to make sure that the implement couplers and the tractor- hydraulic-couplers are firmly connected. NOTE : • Your local KUBOTA Dealer can supply parts for adapting couplers to hydraulic hoses. Disconnecting 1. Lower the implement first to the ground to release the hydraulic pressure in the hoses.

  • Page 71: Auxiliary Hydraulics

    • If someone gets injured because of leaked hydraulic fluid, see a doctor at once. Serious infection or allergic reaction will develop if proper medical treatment is not administered immediately. BX231D...

  • Page 72: Mower Lift Linkage System

    If you do not follow the preceding procedure, 2. Attach the block outlet cover (option). damage of the mower-rear-link can result. The block outlet cover is standard part for KUBOTA Implements 3. Route the implement inlet, outlet, and return pipes as shown in the figures.

  • Page 73: Hydraulic Control Unit Use Reference Chart

    Hydraulic control Weeder, ridger Earthmove, digger YES/NO scraper, and manure For implements with gauge fork rear carrier Tighten wheels, set the hydraulic Mower (mid-and rear- control lever to the lowered mount type), hayrake, (down) position all way. and tedder BX231D...

  • Page 74: Auxiliary Hydraulic Control Valve (If Equipped)

    (B) Right (red) when implement is not in use or during transport. The control valve is locked in the lock position. The lock is not intended and will not prevent a leak down of the implement during the period of storage. BX231D...

  • Page 75: Connecting The Auxiliary Hydraulic Control Lever And Hydraulic Hose To The Auxiliary Hydraulic Port

    To use the connector lines is released so the loader will go the valve as a floating valve with detents, down by its own weight. This lever position after the bump is the second stage. When the operator lets BX231D...
  • Page 76  HYDRAULIC UNIT AUXILIARY HYDRAULIC CONTROL VALVE (IF EQUIPPED) the hand off from the auxiliary-hydraulic-control- lever, it will stay in the second stage position. Shift the auxiliary-hydraulic-control-lever backward to place it to the normal position. BX231D...

  • Page 77: Tyres, Wheels And Ballast

    Front 18x8.50-10 Bar (1.5 kgf/cm 108.5 N⋅m to 130.2 N⋅m Rear [22 psi] (11.1 kgf⋅m to 13.3 kgf⋅m) 150 kPa 2. Then recheck as the following table. 18x8.50-10 Ind. (1.5 kgf/cm (See SERVICE INTERVALS on page 82) [22 psi] BX231D...

  • Page 78: Front Wheels

    • Before jacking up the tractor, park it on a firm and level ground and chock the front wheels. • Fix the front axle to keep it from pivoting. • Select jacks that withstand the machine weight and set them up as shown in the following figure. BX231D...

  • Page 79: Ballast

    [Approx. 2.25 kg CaCl per 4 L of water] Refer to your implement operator's manual for required number of weights or consult your local KUBOTA IMPORTANT : Dealer to use it. • Do not fill tyres with water or solution more...
  • Page 80 100% of full capacity Amount of water of tyre of tyre Air compresses like Water can not be Characteristic a cushion compressed • To avoid damage to the transmission, do not use rear wheel weights and liquid ballast at the same time. BX231D...

  • Page 81: Cab Operation

    • After closing the doors, make sure that the doors are fully closed. From the outside 1. Push the door and close the door. From the inside 1. Pull the door handle and close the door. BX231D...

  • Page 82: Opening And Closing The Rear Window

    2. Push the windscreen a little. 2. When the bottom half of the front wiper / washer The windscreen will be opened by the gas-spring- switch is pressed further to the second step, cylinder. washer liquid jets out. BX231D...

  • Page 83: Washer Fluid Tank

    2. Washer fluid tank When it is necessary, remove the white cap and fill up the washer-fluid-tank. Use a fluid recommended by your local Kubota dealer. Use a liquid which can stand the frost. (1) Air nozzle (A) Driver area air...

  • Page 84: Air Control Vent

    The air nozzles can be fully opened or fully closed. The air nozzles can be turned left or right depending on the desired air directions on the windows or on the operator. The air nozzles can be rotated (360 deg.) to change the air directions. BX231D...

  • Page 85: Beacon Position (If Equipped)

    (under a building for example) or when there are some obstacles (branches for example), move the beacon to the bottom position as shown in the figure. (1) Beacon (A) Top position (B) Bottom position (C) CAB (D) Move BX231D...

  • Page 86: Maintenance

    Power steering oil line Replace every 4 years 106 Check every 1 year Fuel line Replace every 4 years 106 Check every 1 year Intake air line Replace every 4 years 106 Check every 1 year Engine breather hose (Continued) BX231D...
  • Page 87 You should clean the air cleaner more often in dusty conditions than in normal conditions. Every 1000 hours or every 1 year whichever comes faster. Consult your local KUBOTA Dealer for this service. Every 2000 hours or every 2 years whichever comes faster.

  • Page 88: Lubricants, Fuel And Coolant

    Oil amount when the oil level is at the upper level of the oil level gauge. The product name of KUBOTA genuine UDT fluid may be different from that in the operator's manual depending on countries or territories. Consult your local KUBOTA Dealer for further detail.
  • Page 89 For an enhanced ownership experience, we recommend Super UDT-2 to be used instead of standard hydraulic/ transmission fluid. Super UDT-2 is a proprietary KUBOTA formulation that delivers superior performance and protection in all operating conditions. Regular UDT is also permitted for use in this machine.

  • Page 90: Periodic Service

    If you should spill, wipe it off at once, or it may DAILY CHECK cause a fire. • To prevent water condensation and water accumulation in the fuel tank, fill the tank before WARNING parking overnight. To avoid serious injury or death: BX231D...

  • Page 91: Checking The Engine Oil Level

    Grade No.2-Diesel fuel page 84) Below -10 ℃ Grade No.1-Diesel fuel BX231D 1. Turn the key switch to the on position and check the amount of fuel by the fuel gauge. 2. Fill the fuel tank with fuel when the fuel gauge shows as follows.

  • Page 92: Checking The Coolant Level

    • Use clean, fresh, soft water and antifreeze to fill the recovery tank. • If water should leak, consult your local KUBOTA Dealer. 1. Check to see that the coolant level is between the [H] and [L] marks of the recovery tank.

  • Page 93: Checking The Brake Pedal

    Inspect the following check items regularly 2. Replace the gauge(s), the meter(s), or the Easy • Check the wiring for chafed or cracked insulation. ™ Checker if they are broken. • Check the wiring harness clamps. Replace them if necessary. BX231D...

  • Page 94: Checking And Cleaning Inside Of The Bonnet And Around The Mower Belt To Avoid Fire Hazard

    • Check the instrument panel for correct operation of the switches and the gauges. Consult your KUBOTA Dealer regarding maintenance, diagnosis, and repair. 12. Checking and cleaning inside of the bonnet and around the mower belt to avoid fire hazard...

  • Page 95: Checking The Engine Start System

    [N] position. 2. Turn the key to the start position. 3. Make sure that the engine does not crank. 4. If the engine cranks, consult your local KUBOTA (1) Grease fitting for the speed (2) Bonnet guide Dealer.

  • Page 96: Checking The Opc (Operator Presence Control) System

    SERVICE EVERY 50 HOURS 5. Make sure that the engine does not crank. 5. If the engine does not stop, consult your local 6. If the engine cranks, consult your local KUBOTA KUBOTA Dealer. Dealer. (1) Range gear shift lever (Hi-...

  • Page 97: Cleaning The Lock Lever Shaft (If Equipped)

    • Make sure to put a clamp to the positive cable of the battery. IMPORTANT : • The factory-installed battery is of non-refillable type. If the battery is weak, charge the battery or replace it with new one. BX231D...

  • Page 98: Battery Charging

    To avoid serious injury or death: • Never check the battery charge by placing a • Be sure to stop the engine and remove the key metal object across the posts. before cleaning the air cleaner element. Use a voltmeter or hydrometer. BX231D...

  • Page 99: Checking The Fuel Filter

    SERVICE EVERY 100 HOURS  PERIODIC SERVICE BX231D IMPORTANT : • The air cleaner uses a dry element. Never apply oil to the air cleaner. • Do not run the engine with the filter element removed. • Align the arrow marks when reinstalling the cover.

  • Page 100: Adjusting The Fan Belt Tension

    NOTE : speed-control-pedal. • If the fuel line is removed, be sure to properly bleed the fuel system. • Consult your local KUBOTA Dealer for service. (See Bleeding the fuel system on page 106) 4. Adjusting the fan belt tension WARNING To avoid serious injury or death: •...

  • Page 101: Adjusting The Brake Pedal

    • If you are not able to adjust, consult your local the emergency-hand-brake-lever is 0 mm. KUBOTA Dealer. b. Retighten the nut (2). 3. Make sure that the free travel at the top of the 1.

  • Page 102: Changing The Engine Oil

    SERVICE EVERY 200 HOURS BX231D IMPORTANT : • To prevent serious damage to the engine, use only a KUBOTA genuine filter. 1. Remove the oil filter. 2. Put a film of the clean engine oil on the rubber seal of the new filter.

  • Page 103: Checking The Toe-In

    0 mm to 5 mm less than rear distance • To prevent serious damage to the hydraulic system, use only a KUBOTA genuine filter. 1. Remove the transmission oil filter. 2. Put a film of clean transmission oil on rubber seal of new transmission oil filter.

  • Page 104: Changing The Transmission Fluid

    Run the engine at medium speed for a few minutes to prevent damage to the transmission. Transmission fluid KUBOTA SUPER UDT 2 Transmission fluid capacity 11.3 L 1. To drain the used transmission fluid, remove the...

  • Page 105: Cleaning The Transmission Strainer

    5. Replacing the fuel filter element is provided with an oil strainer. • Consult your local KUBOTA Dealer for replacing the fuel filter element. 4. Changing the front axle case oil SERVICE EVERY 800 HOURS WARNING 1.

  • Page 106: Service Every 1000 Hours Or 1 Year

    9. Start and operate the engine for few minutes. • Consult your local KUBOTA Dealer for checking the 10. Stop the engine and let it cool. injection pressure of the fuel-injection-nozzle.

  • Page 107: Antifreeze

    Always use a 50/50 mix of long-life coolant and clean soft water in KUBOTA engines. Consult your local KUBOTA Dealer concerning coolant for extreme conditions. NOTE : • The following data represent industry standards that necessitate a minimum glycol content in the concentrated antifreeze.

  • Page 108: Service Every 3000 Hours

    SERVICE EVERY 3000 HOURS 2. Checking the radiator hoses and 1. Checking the injection pump the hose clamps • Consult your local KUBOTA Dealer for checking the injection pump. WARNING To avoid serious injury or death: • Be sure to stop the engine and remove the key before checking the radiator hose and the hose clamps.

  • Page 109: Coping With Overheating

    1. Check to see that all power steering lines are tight and not damaged. 2. If the power steering pressure hoses are found to be worn or damaged, replace or repair them at once. BX231D...

  • Page 110: Checking The Engine Breather Hose

    (1) Radiator hoses (2 pcs) (2) Hose clamps (4 pcs) 2. Replacing the fuel hose • Consult your local KUBOTA Dealer for replacing the fuel hose. 3. Replacing the power steering hose • Consult your local KUBOTA Dealer for replacing the power-steering-hose.

  • Page 111: Replacing The Fuse

    See ENGINE TROUBLESHOOTING on page 110 or Head lights (high beam), Head 15 A lights (low beam), Head lights indi- contact your local KUBOTA Dealer for specific cator, Position lamp information dealing with electrical problems. 20 A Hazard light...

  • Page 112: Replacing The Light Bulb

    35 W×2 Rear work light (If equipped) 35 W Head light 1. Take the light bulb out of the body of the light and replace with a new one. Other lights 1. Detach the lens and replace the light bulb. BX231D...

  • Page 113: Storage Of The Tractor

    If the tractor must be stored outdoors, cover it with a waterproof tarpaulin. Jack the tractor up and place blocks under the front and rear axles so that all 4 tyres are off the ground. BX231D...

  • Page 114: Troubleshooting

    • Coolant flow route corroded. • Flush the cooling system. Engine does not stop when key switch is • Fuse blown (15 A). • Replace the fuse. turned off. If you have any questions, contact your local KUBOTA Dealer. BX231D...

  • Page 115: Options

    OPTION ITEMS  OPTIONS OPTIONS OPTION ITEMS Consult your local KUBOTA Dealer for further details of the following options. • 18×8.5-10 Bar Tyre • 26×12.0-12 Bar Tyre • 18×8.5-10 Ind. Tyre • 26×12.0-12 Ind. Tyre • 18×8.5-10 Turf Tyre • 26×12.0-20 Turf Tyre •...

  • Page 116: Appendices

    Minimum limit percentages Tyre combination 3. (Industrial) Technically permis- Front tyre Rear tyre sible maximum la- Tractor payload den mass Tyre size 18×8.50-10 26×12.00-12 Maximum permissible load of the tyre Maximum axle load 1400 614-621 Minimum limit percentages BX231D...

  • Page 117: Index

    86 engine breather hose bonnet open shaft............30 checking.............. 106 brake pedal..............33 replacing..............106 adjusting..............97 engine oil checking..............89 changing..............98 checking the level..........87 engine oil filter replacing..............97 check chains engine start system adjusting..............63 checking..............91 check items during driving...........53 BX231D...
  • Page 118 89 movable parts checking..............90 gauges checking..............89 OPC system checking..............92 hand accelerator lever..........35 operation of new tractor..........45 hand controls............27,31 operator's seat.............32 hazard light option checking..............89 block heater............42 hazard light switch............29 option items............... 111 BX231D...
  • Page 119 PTO select lever............59 cleaning...............101 PTO shaft cap............. 60 traveling speeds table..........23 PTO shaft cover............60 troubleshooting engine..............110 tyre radiator hose maximum permissible load........112 checking.............. 104 tyres................73 radiator hose (water pipe) inflation pressure...........73 replacing..............106 radiator screen cleaning..............88 BX231D...
  • Page 120 70 walk around inspection..........86 warranty of the tractor..........19 washer fluid tank............79 water pipe (radiator hose) replacing..............106 weight rear ballast............26 wheel bolt torque checking..............92 wheel tread..............73 windscreen opening and closing..........78 BX231D...
  • Page 121 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.

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