1.Gasoline Engine (HH139) small 4 stroke engine. 2.This product has passed the ISO,EPA,CARB,CE and 3C certificate. Gasoline Engine Model HH139 4 stroke Engine Model OHV,Air-cooled,4-stroke,Camshaft OutputBoreXStroke 39x26mmDisplacement 31ccPower 0.9kw(1.2HP)/7000r/min Compression ratio 8:1 Fuel Consumption 380g/kW.h Ackage Dimension 240x200x230mm Gasoline Engine HH139