The Kubota ZB400 is a 400 cc (24.4 cu·in) straight-two, water-cooled horizontal naturally aspirated diesel engine manufactured by Kubota since 1980.
The Kubota ZB400 engine used pre-combustion (TVCS) combustion method. The cylinder bore is 64.0 mm (2.52 in) and the piston stroke is 62.2 mm (2.45 in).
The ZB400 diesel engine produced 10.6 PS (7.83 KW; 10.5 HP) at 3,200 rpm of gorss horsepower and 9.1 PS (6.71 KW; 9.0 HP) at 3,200 rpm of net intermittent power.
The breakdown of the engine code is as follows:
- Z – 2-cylinders
- 400 – Approximate displacement 400 cc
General information
Engine Specifications | |
Engine code | ZB400 |
Layout | Straight-2, horizontal diesel engine |
Fuel type | Diesel fuel No.2-D |
Production | – |
Displacement | 0.4 L, 400 cm3 (24.4 cu in) |
Max. Horsepower |
Gross: 10.6 PS (7.83 KW; 10.5 HP) at 3,200 rpm Net Intermittent: 9.1 PS (6.71 KW; 9.0 HP) at 3,200 rpm |
Torque output | – |
Injection type | Indirect injection |
Fuel system | Fuel injection pump |
Cooling system | Water with pressurized radiator |
Starting system | Electric starting with 12V (0.8 kW) starter |
Starting support device | – |
Governor | Centrifugal mechanical governor |
Power adder | None |
Firing order | 1-2 |
Dimensions (L x W x H): | 460 x 404 x 462 mm (18.1 x 15.9 x 18.2 in) |
Weight | 60 kg (132.2 lbs) |
Cylinder block
Cylinder block | ||
Compression ratio: | – | |
Cylinder bore: | 64.0 mm (2.52 in) | |
Piston stroke: | 62.2 mm (2.45 in) | |
Number of piston rings (compression / oil): | 2 / 1 |
Maintenance data
Oil system | |
Recommended engine oil | СС or better |
SAE Viscosity Number | SAE 10W-30, 10W-40 |
Engine oil capacity | 2.0 liters (2.11 US.qts, 1.76 Imp. qts) |
Cooling system | |
Type | Water with pressurized radiator |
Coolant capacity | 1.9 liters (2.0 US.qts, 1.67 Imp. qts) |
Electrical system | |
Battery: | 12V, 35Ah or equivalent |
We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.
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