Part of the Kubota Repair Manuals.
This is the Kubota Workshop Manual for the MX5100 and MX5100HST tractors, a 564 page factory service document. It covers machines built with the V2403-M-TE3 diesel engine in both gear drive and hydrostatic (HST) form.
Inside you get the full repair chain: engine servicing and checking, the travelling and PTO clutch, the transmission with its shuttle and range shift, front and rear axles, brakes, steering, and the three point hydraulic system, plus the complete electrical system with wiring diagrams and the OPC safety circuit. A dedicated MX5100HST supplement covers the hydrostatic version, and servicing specifications with tightening torques run throughout.
With this PDF you can set valve clearance and torques to Kubota figures, trace an electrical or hydraulic fault to its section, and rebuild a major assembly yourself instead of guessing. It is a searchable download you can print or keep on a phone, tablet or laptop right at the machine.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Information | 3-14 | |
| General | 15-84 | Lubricants, Fuel and Coolant, Maintenance, Special Tools (Engine, Tractor), Tires (Types of Tire, Treads Adjustment, Tire Pressure, Tire Liquid Injection, Imprement Limitations) |
| Engine | 85-154 | Engine Body, Lubricating System, Cooling System, Fuel System, Timing Gear, Balancer Shaft, Piston Pin Bore, Crankshaft |
| Clutch | 155-186 | Travelling Clutch (Linkage Mechanism), PTO Clutch (Shift Linkage, Structure, Oil Flow), Servicing Specifications, Checking |
| Transmission | 187-246 | Power Train (Main Gear Shift Section, Shuttle Shift Section, Range Gear Shift Section, Front Wheel Drive Section), PTO System (Structure, PTO Clutch), Structure |
| Rear Axle | 247-254 | Rear Axle Case, Brake Case, Rear Wheel, ROPS |
| Brakes | 255-267 | Brake Case, Brake Cam Lever, Parking Brake Lever, Brake Pedal, Brake Rod, Brake Lever Link, Turnbuckle, Oil Seal |
| Front Axle | 268-293 | Front Wheel Alignment, Structure (2WD Type, 4WD Type), Servicing Specifications, Checking |
| Steering | 294-317 | Steering Linkage, Steering Cylinder |
| Hydraulic System | 318-360 | Hydraulic Circuit for Three Point Hydraulic System, Hydraulic Cylinder, Position Control Valve |
| Electrical System | 361-408 | Engine Starting System (Electric Circuit, Safety Switch), Opc System (Electrical Circuit, Wiring Diagram, Servicing Specifications, Checking |
| MX5100HST Supplement | 409-564 | Lubricants Fuel and Coolant, Maintenance Check List, Disassembling and Assembling (Separating Engine From Tractor), Electrical Circuit |
Every system also includes tightening torques, disassembling and servicing, and troubleshooting.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| General Use Screws, Bolts and Nuts (M8, Ordinariness) | 18 to 20 N·m | p. 26 |
| Engine Oil Capacity (with filter) | 8.0 L | p. 24 |
| Transmission Case Capacity | 44.0 L | p. 24 |
| Cooling System Capacity (with recovery tank) | 7.0 L | p. 24 |
| Valve Clearance (Engine, when cold) | 0.18 to 0.22 mm | p. 91 |
| Fan Belt Tension (deflection) | 12 mm | p. 41 |
| Clutch Pedal Free Play | 20 to 30 mm | p. 34 |
| Brake Pedal Free Play | 15 to 20 mm | p. 41 |
| Engine Oil Pressure (at Idle Speed) | More than 98 kPa | p. 95 |
| MX5100 | ||
| Steering wheel mounting nut | 48.0 to 55.9 N·m | p. 27 |
| PTO Clutch Operating Pressure | 2.25 to 2.45 MPa | p. 163 |
| MX5100HST | ||
| PTO Clutch Operating Pressure | 2.25 to 2.45 MPa | p. 498 |




















