Part of the Kubota Repair Manuals.
Factory-written for the BX1880-AU, BX2380-AU, and BX2680-AU tractors plus their full rotary mower lineup (RCK60D-26BX, RCK54-23BX, RCK60B-23BX, RCK48-18BX), this 456-page Workshop Manual carries OEM #9Y111-18054. It covers hydraulic schematics routing the steering, loader, and lift circuits, plus wiring diagrams with a connector chart for every relay, safety switch, and OPC circuit. Dedicated troubleshooting sections span engine, transaxle, hydraulic, and mower systems, backed by torque tables and exploded views of the hydrostatic transaxle and gearbox. Blade screws spec at 103-117 N·m, the pulley boss mounting nut at 24-27 N·m, both printed here rather than guessed off a forum. When the machine is down, open this bookmarked PDF on any device and jump to the section you need.
Complete the set for your BX1880-AU–BX2680-AU Package
- Operator Manual: Kubota RCK60D-26BX, RCK54D-26BX Rotary Mower Operator Manual
Other edition of this manual
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | Tightening Bolts and Nuts, Applying Thread-Locking Fluid, Installing Circlips, Installing Spring Pins, Handling Split Pin, Handling Chain Joint and Split Pin | |
| Engine | Engine Body, Cylinder Block, Closed Breather, Half-Floating Head Cover, Piston, Piston Ring, Connecting Rod, Crankshaft | |
| Transaxle | Traveling System (Hydrostatic Transmission, Range Gear Shift Section, Front Wheel Drive Section, Differential Gear Section, Brake Section) | |
| Front Axle | Front Wheel Alignment (Camber of Front Axle, Kingpin Angle of Front Axle, Caster of Front Axle, Toe-In of Front Axle), Servicing | |
| Steering | Steering System, Hydraulic Circuit of Steering, Steering Controller (Structure of Steering Controller, Control Valve, Metering Device, Relief Valve) | |
| Hydraulic System | Hydraulic Circuit, Hydraulic Pump (Outline of Hydraulic Pump, Hydraulic Pump, Hydraulic Pump) | |
| Electrical System | Wiring Diagram of Bx Tractor, Electrical Connector Chart | |
| Mower | Power Transmission of Mower, Lifting Mechanism of Mower, Self-Balancer System of Mower, Servicing, Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Mower blade screw torque | 103 to 117 N·m, 10.5 to 12.0 kgf·m, 76.0 to 86.7 lbf·ft | p. 426 |
| Gear box mounting screw torque | 78 to 90 N·m, 7.9 to 9.2 kgf·m, 58 to 66 lbf·ft | p. 426 |
| Mower belt replacement condition | if there is found surface split at more than 3 positions | p. 439 |
| Pulley boss mounting nut torque | 24 to 27 N·m, 2.4 to 2.8 kgf·m, 18 to 20 lbf·ft | p. 426 |
| Three spindle shafts greasing interval | Daily check | p. 71 |
| Three spindle shafts greasing amount | Until grease overflows | p. 63 |
| Gear box oil seal check interval | Every 1 year | p. 71 |
| Gear box oil seal replacement interval | Every 4 years | p. 71 |
| Air cleaner element check interval | Every 100 Hr | p. 69 |
| Air cleaner element replacement interval | Every 1000 Hr or 1 year | p. 69 |
| Greasing interval (BX tractor) | Every 50 Hr | p. 69 |
