Gasoline Engine HR188F 389cc, OHV, Single Cylinder, 4-Stroke, Air-Cooled Gasoline Engine HR188F 389cc SPECIFICATION: Model HR188FEngine Type OHV, Single ... Cylinder, 4-Stroke, Air-CooledMax.Output (HP/rpm)13.0/3800Max.Torque (N•m ... )280 389cc HR188F Gasoline Engine OHV Single Cylinder 4-Stroke Air-Cooled