... , hedge trimmer, power tiller, motor bi 4 stroke small air cooled gasoline engine are usally powered for brush ... trimmer, power tiller, motor bike etcModel139FType1-cylinder, 4-stroke, air-cooledCylinder diameterx Stroke(mm)39x26Maximum output0.93KWRated power0. ... lubricationFuel mixed ratio(petrol and oil)4 strokeCarburetorPump-film typeNet weight (kg)4 air cooled gasoline engine 139F