Part of the Kubota Repair Manuals.
This factory Kubota Service Manual covers the BX25 sub-compact tractor together with its matched attachments: the RCK54(P)-23BX and RCK60B-23BX rotary mower decks, the LA240 front loader, and the BT601 backhoe. The BX25 runs the D902-E3-BX-2 diesel, and the manual spans 448 pages of mechanism and servicing detail.
Every major system is documented: engine, hydrostatic transaxle, front axle, power steering, the hydraulic circuit that feeds the loader and backhoe, and the electrical system with wiring diagrams, safety switches, and operator presence controls. Each attachment gets its own specifications, torque tables, and troubleshooting.
Use this PDF to chase a no-crank safety-switch fault, cure fuel starvation, fix hydraulic leaks, or set up and adjust the mower deck. It downloads instantly and prints cleanly, so you can keep the pages you need at the machine.
Complete the set for your BX25 Package
- Parts Catalog: Kubota LA240 loader Parts Catalog
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety & Precautions | Safety Instructions, Safety First, Safety Starting, Avoid Fires, Prepare for Emergencies, Safety Decals | |
| Machine Identification & Specifications | Specifications, Travelling Speeds, Dimensions, Tractor Identification, Handling Precautions for Electrical Parts and Wiring, Lubricants Fuel and Coolant | |
| Engine | Lubricating System, Cooling System, Fuel System, Troubleshooting, Servicing Specifications, Tightening Torques, Disassembling and Assembling | |
| Transaxle & Drivetrain | Structure, Hydrostatic Transmission, Range Gear Shift Section, Front Wheel Drive Section, Differential Gear Section, Brake Section, Troubleshooting, Servicing Specifications, Tightening Torques | |
| Front Axle | Structure, Front Wheel Alignment, Camber, Kingpin Angle, Caster, Toe-In, Troubleshooting, Servicing Specifications, Tightening Torques | |
| Steering System | Hydraulic Circuit, Steering Controller, Steering Cylinder, Troubleshooting, Servicing Specifications, Tightening Torques | |
| Hydraulic System | Hydraulic Circuit, Hydraulic Pump, Control Valve, Flow Priority Valve, Relief Valve, Hydraulic Cylinder, Hydraulic Block Type Outlet, Mower Linkage, Troubleshooting, Servicing Specifications | |
| Electrical System & Wiring | Wiring Diagram, Starting System, Safety Switch, Operator Presence Control, Charging System, Ic Regulator, Lighting System, Troubleshooting, Servicing Specifications | |
| Rotary Mower Attachment | Safety Decals, Terminology, Specifications, Mounting Method, Cutting Height, Cutting Width, Blade Spindle Speed, Blade Tip Velocity, Blade Length, Power Transmission, Lifting Mechanism, Self-Balancer System | |
| Front Loader Attachment | Hydraulic Circuit, Control Valve Assembly, Boom Cylinder and Bucket Cylinder, Identification, Lubricants, Maintenance Check List, Troubleshooting, Servicing Specifications | |
| Backhoe Attachment | Safety Decals, Specifications, Operating Dimensions, Digging Force, Cycle Time, Hydraulic Cylinders, Bucket Sizes, Lift Capacity, Hydraulic System, Backhoe Identification, Troubleshooting, Servicing Specifications |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| LA240 | ||
| Main frame mounting bolt and nut (M14) tightening torque | 147 N·m, 15.0 kgf·m, 108 ft-lbs | p. 386 |
| RCK54P-23BX | ||
| Mower blade screw tightening torque | 103 to 118 N·m, 10.5 to 12.0 kgf·m, 76 to 87 ft-lbs | p. 354 |
| BT601 | ||
| Troubleshooting: Oil leaks from joint | Repair | p. 428 |
| Hydraulic fittings (UNF) 9/16 thread size tightening torque | 37 to 44 N·m, 3.8 to 4.5 kgf·m, 27 to 33 lbf·ft | p. 433 |
| All Models | ||
| Fuel filter element replacement interval | Every 500 hours | p. 39 |
| Clearance between seat stay and seat reverse switch | 9 to 11 mm, 0.355 to 0.433 in. | p. 305 |
| Distance (L) between the foot releasing point and the machine stopping point | Approximately 3 m (10 feet) | p. 165 |
| Air cleaner element replacement interval | Once yearly or after every sixth cleaning, whichever comes first | p. 32 |
| BX25 | ||
| Engine Total Displacement | 898 cm³ (54.8 cu.in.) | p. 9 |
| Fuel Tank Capacity | 25 L (6.6 U.S.gals) | p. 9 |
| Engine Crankcase (with filter) Capacity | 3.1 L (3.3 U.S.qts) | p. 9 |
| Engine Coolant Capacity | 2.7 L (2.8 U.S.qts) | p. 9 |
