5.5hp output 4 stroke,air cooled single cylinder,ohv vertical shaft , Specification : Model1P60FV-C1P64FV-C1P68FV-C1P70FV-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/3600rpm4.0kw/3600rpm4.3kw/3600rpmRated output power1.8kw/ ...