The Kubota ZB400 is a 400 cc, (24.4 cu·in) natural aspirated two-cylinders four-stroke liquid-cooled internal combustion diesel engine, manufactured by Kubota since 1980 for general-purpose applications.
The cylinder bore is 64.0 mm (2.52 in) and the piston stroke is 62.2 mm (2.45 in).
The Kubota ZB400 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 Kubota ZB400 features:
- Three Vortex Combustion System (TVCS)
- Fuel injection pump
- Centrifugal governor
- Forced lubrication by trochoid pump
- Water cooling system with pressurized radiator
- Electric starter (12V, 0.8 kW)
General information
Engine Specifications | |
Engine model | ZB400 |
Engine type | 4-stroke, horizontal, two-cylinders |
Displacement | 400 cm3, (24.4 cu·in) |
Max. horsepower | Gross (intermittent): 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 Net (continuous): 8.1 PS (5.97 KW; 8.0 HP) at 3,200 rpm |
Max. torque | – |
Cooling system | Liquid-cooled with pressurized radiator |
Lubricating system | Forced lubrication by trochoid pump |
Fuel system | Injection pump |
Injection type | Indirect injection |
Fuel used | Diesel fuel No.2-D |
Starting system | Electric starter (12V, 0.8 kW) |
Governor | Centrifugal governor |
PTO shaft rotation | Counterclockwise (from PTO shaft side) |
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 and Head
Cylinder block | |
Compression ratio: | – |
Cylinder bore: | 64.0 mm (2.52 in) |
Piston stroke: | 62.2 mm (2.45 in) |
Service Data
Oil system | |
Lubrication system: | Forced lubrication by trochoid pump |
Oil type: | API CC or better |
Recommended oil: | SAE 30, 10W-30 |
Oil capacity: | 2.0 liters (2.11 US.qts, 1.76 Imp. qts) |
Cooling system | |
Type | Liquid-cooled with pressurized radiator |
Coolant capacity | 1.9 liters (2.0 US.qts, 1.67 Imp. qts) |
Electrical system | |
Battery: | 12V, 35AH or equivalent |
Starting motor | Electric starter (12V, 0.8 kW) |
We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.
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