safe engine inspection and easy maintenance Air-cooled Gasoline engine, motor, general gasoline engine Air-cooled Gasoline engine, motor, general gasoline ... (E)KG390(E)TypeSingle cylinder, 4 stroke, air-cooled,OHVSingle cylinder, 4 stroke, air-cooled,OHVBore×Stroke [mm(in)]54x48 (2 ... .gal)]1.6(0.45)3.6(0.95)3.6(0.95)6.0(1.58)6.0(1.58 ... 55)25(55)31(68.2)31(68.2) air-cooled diesel engine