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 Kubota Z, D & V Series Engines Manual
| System | Pages | Key Topics |
|---|---|---|
| Cover | - | - |
| 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 |
| Z600-B, ZH600-B, D650-B, D750-B, D850-B, DH850-B, D950-B, V1100-B, VH1100-B, V1200-B | ||
| Head screws and nuts torque | 64.7 to 69.6 N-m | p. 67 |
| 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 | 2.55 L | p. 9 |
| D650-B, D750-B, D850-B, D950-B | ||
| Lubricating Oil Capacity | 4.6 L | p. 9 |
Kubota Z, D & V Series Engines Common Problems This Manual Covers
Hard starting when cold
These engines start hard after sitting, especially in cold weather, from air in the fuel, a clogged filter, or weak preheat. The fuel system section covers the injection pump, nozzle, and filter for diagnosis.
Manual Section: Fuel System p. 43White smoke and rough running cold
White smoke until warm points to poor fuel atomization or a worn injector. The injection nozzle section covers testing and servicing the nozzle so it sprays correctly.
Manual Section: Injection Nozzle p. 47Overheating from clogged fins
Overheating and coolant loss often come from debris-packed radiator fins, a failing thermostat, or a bad water pump. The cooling system section covers these parts and the thermostat opening temperature.
Manual Section: Cooling System p. 37Low oil pressure or noisy valvetrain
A low oil pressure warning or bottom-end noise points to the oil pump, strainer, or bearing wear. The lubricating system section describes the pump, relief valve, and pressure switch to check.
Manual Section: Lubricating System p. 31Fuel loses prime after service
The fuel system can draw air and lose prime after a filter change or running out of diesel. The injection pump section explains the pump so you can bleed and restore delivery.
Manual Section: Injection Pump p. 43Incorrect valve clearance
Clearance outside the 0.145 to 0.185 mm cold range causes hard starting, noise, and rough idle. The servicing specifications section lists the clearance and other allowable limits for adjustment.
Manual Section: Servicing Specifications p. 78Frequently Asked Questions
Which engines does this manual cover?
It covers the Kubota 70mm stroke series diesel engines, 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 one reference.
Does it include torque specifications?
Yes. The tightening torques section lists factory values such as the connecting rod screw torque of 26.5 to 30.4 N-m and the crankshaft nut torque, so you can reassemble to spec. p. 67
What is the valve clearance spec?
The servicing specifications section gives a cold valve clearance of 0.145 to 0.185 mm, along with cylinder head flatness and other allowable limits to measure against. p. 78
Does it cover a full engine rebuild?
Yes. The disassembling and servicing section provides teardown and assembly procedures for the cylinder head, valves, pistons, connecting rods, crankshaft, and gear case with factory limits. p. 61
Is this Kubota Z500-B, V1200-B Workshop Manual a digital download?
Yes. You get an immediate download of the full 190-page searchable Workshop Manual. Open it on any device, from a laptop at your desk to a phone in the field.
Is this Kubota Z500-B, V1200-B Workshop Manual printable?
Absolutely. The PDF carries no DRM restrictions. Print any page or section you need for the shop, using any standard printer.
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