5.5hp output 4 stroke,air cooled single cylinder,ohv vertical shaft , ... -CEngine type4-stroke ,25″ inclinded,single -clinder,air-cooledBorexStroke (mm)60x4264x4265x4270x45Displacement(ml)118135139173Compression Ratio8.0:18 ... .0:18.0:18.5:1Theoretical MaximumOutput Power2.8kw/3600rpm3.7kw/3600rpm4. ... domestic and overseas . 1P68FV,163cc,5.5hp vertical shaft engine