Single cylinder four stroke diesel engine, water cooled with direct injection system, save manual start with starting handle or electric starter motor, alternator in flywheel house, excess fuel device, automatic decompression, self-venting fuel system, mechanical speed governor, lubricating oil gear pump, oil filter, intake silencer or dry type air cleaner, fuel filter, water cooled exhaust elbow, cooling water pump, cooling water thermostat, crankcase of high tensile light alloy, crankshaft / con rod bearing: plain bearings on all except flywheel end (roller bearing), cast integral engine feet, power take of flywheel end, environmentally friendly by using internal crankcase breathing and valve stem seals