Part of the Kubota Repair Manuals.
This Kubota Workshop Manual is the factory service reference for the STV32, STV36 and STV40 compact tractors, all three models in a single 383 page PDF. It is built around Kubota's D1503-M, D1703-M and D1803-M diesel engines and follows the maker's own General, Mechanism and Servicing structure.
Coverage runs the full machine: engine, clutch, the hydrostatic transmission with its range gears and bi-speed turn system, front and rear axles, brakes, power steering, the three point hydraulic system and the electrical system with wiring diagrams. Every section carries factory specifications, tightening torques and allowable limits.
Whether you are rebuilding the HST, tracing a charging fault or setting valve clearance, the step by step procedures and exploded views let an owner or independent mechanic service these tractors without guessing.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| G General | 13-66 | General |
| Engine | 67-135 | Lubricating System, Cooling System, Fuel System, Cylinder Head and Valves, Timing Gears, Crankshaft |
| Clutch | 136-146 | Linkage Mechanism, Clutch Disc, Pressure Plate, Release Fork, Release Bearing, Clutch Pedal |
| Transmission | 147-230 | Hydrostatic Transmission (HST), Range Gear Shift Section, Front Wheel Drive Section, Bi-Speed Turn System, Independent PTO System, Rear PTO Gear Shift Section |
| Rear Axle | 231-241 | Structure, Final Reduction System, Planetary Gear, Differential Lock Clutch, Rear Axle Shaft, Hypoid Ring Gear |
| Brakes | 242-252 | Brake Linkage, Parking Brake, Brake Disc, Brake Cam, Brake Plate, Brake Pedal |
| Front Axle | 253-270 | Structure, Front Axle Case, Differential System, Bevel Gear, Differential Pinion, Front Axle Bracket |
| Steering | 271-282 | Structure, Hydraulic Circuit for Power Steering, Steering Cylinder, Steering Controller, Hydraulic Pump, Regulating Valve |
| Hydraulic System | 283-329 | Whole Hydraulic Circuit, Hydraulic Pump, Regulator Valve, Bi-Speed Valve, Three Point Hydraulic System, Auxiliary Control Valve |
| Electrical System | 330-383 | Wiring Diagram, Starting System, Charging System, Lighting System, Bi-Speed Turn System, Others |
Documents This Manual Refers To
The manufacturer cites these publications by number. We carry them:
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuel tank capacity | 29.5 L (7.79 U.S.gals, 6.49 Imp.gals) | p. 22 |
| Coolant capacity (with reserve tank) | 6.1 L (6.4 U.S.qts, 5.4 Imp.qts) | p. 22 |
| Engine oil change interval | Every 100 hours | p. 24 |
| Engine oil filter replacement interval | Every 200 hours | p. 24 |
| General use screws, bolts and nuts (M6, No-grade or 4T, Ordinariness) | 7.85 to 9.31 N·m (0.80 to 0.95 kgf·m, 5.79 to 6.87 ft-lbs) | p. 23 |
| General use screws, bolts and nuts (M8, No-grade or 4T, Ordinariness) | 17.7 to 20.5 N·m (1.8 to 2.1 kgf·m, 13.1 to 15.1 ft-lbs) | p. 23 |
| Engine Oil Capacity (with filter) | 6.7 L (7.1 U.S.qts, 5.9 Imp.qts) | p. 9 |
| Transmission Case Capacity | 22 L (5.81 U.S.qts, 4.84 Imp.gals) | p. 9 |
| Front Axle Case Capacity | 4.0 L (4.2 U.S.qts, 3.5 Imp.qts) | p. 9 |
| Cylinder Head Surface Flatness (Allowable Limit) | 0.05 mm / 500 mm (0.0020 in. / 19.69 in.) | p. 76 |
| Valve Clearance (When Cold) | 0.18 to 0.22 mm (0.0071 to 0.0087 in.) | p. 76 |
| Fan Belt Tension (Deflection) | 7.0 to 9.0 mm (0.28 to 0.35 in.) | p. 80 |
