Part of the Kubota Repair Manuals.
This is the Kubota workshop manual for the 70mm stroke series diesel engines, delivered as a downloadable PDF. It covers a wide range of models, including the Z500-B, Z600-B, ZH600-B, D650-B, D750-B, D850-B, DH850-B, D950-B, V1100-B, VH1100-B, and V1200-B, in a single reference.
The manual is divided into mechanism and disassembling and servicing. It documents the engine body, lubricating, cooling, intake and exhaust, fuel, and electrical systems, then provides tightening torques, troubleshooting, servicing specifications, a maintenance check list, and detailed teardown procedures for the cylinder head, valves, pistons, crankshaft, and gear case.
Mechanics use it to set valve clearance, torque connecting rod and crankshaft fasteners, service the injection pump and nozzles, and diagnose hard starting, white smoke, or overheating against factory limits. It is the technical reference for rebuilding these older Kubota diesels correctly.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Specifications | Model, Number of Cylinders, Bore X Stroke, Total Displacement, Maximum Torque, Combustion Chamber | |
| Performance Curves | Brake Horsepower, Torque, Fuel Consumption, Engine R.P.M. | |
| Mechanism | F. Feature, Engine Body (Cylinder Block, Cylinder Head, Crank Shaft, Piston and Piston Rings, Connecting Rod, Camshaft, Flywheel, Rocker Arm) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Valve clearance (Cold) | 0.145 to 0.185 mm | p. 78 |
| Fuel filter element replacement interval | Every 400 hrs | p. 94 |
| Air filter element replacement interval | Every one year | p. 94 |
| Oil filter cartridge replacement interval | Every 200 hrs | p. 94 |
| Glow plugs tightening torque | 9.8 to 11.3 N-m | p. 67 |
| Thermostat valve opening temperature | 80.5 to 83.5°C | p. 82 |
| Injection Pressure | 140 kgf/cm2 (13.73 MPa, 1991 psi) | p. 9 |
| Stroke | 70 mm | p. 9 |
| Z500-B, Z600-B, ZH600-B, D650-B, D750-B, D850-B, DH850-B, D950-B | ||
| Starter Commutator O.D. allowable limit (0.8 kW) | 27.0 mm | p. 83 |
| D650-B, D750-B, D850-B, DH850-B, D950-B | ||
| Battery capacity | 12V, 65AH, equivalent | p. 9 |
| Z500-B, Z600-B, ZH600-B | ||
| Lubricating Oil Capacity (Z500-B, Z600-B, ZH600-B) | 2.55 L | p. 9 |
| D650-B, D750-B, D850-B, D950-B | ||
| Lubricating Oil Capacity (D650-B, D750-B, D850-B, D950-B) | 4.6 L | p. 9 |
