Yanmar 3YM20 displaces 854cc and has a simple OHV design with pushrods operating the two valves-per-cylinder and a slightly under-square bore:stroke ratio for better combustion efficiency. It develops a maximum of 21.7bhp at 3600rpm at 250C fuel temperature or 20.5bhp at 400C. The maximum continuous output is 19.7bhp at 3490rpm and the engine is rated to 250 hours of running per year, with no more than 10 per cent of this at Wide Open Throttle.
Specifications :
- Type : 3 Cylinder diesel marine engine
- Horsepower: 21.7 at 3600rpm
- Torque : 50Nm at 2200 to 2500rpm
- Displacement : 854cc
- Weight : 130kg (dry w/gearbox)
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