single-cylinder,4-stroke ,air-cooled ,OHV, Horizontal side shaft,Auto-Speed gasoline engine with ... -188F/FEDB-190FEngine modelSingle-cylinder,4-stroke,Air-cooled,OHV,Horizntal side Shaft,Auto-Speed gasoline engineBore×Stroke(mm) ... .4(7.4HP)5.5(11.7HP)8.6(13HP)9.6Max.Torque(N.m)10.810.813.2141926. ... ,Double type single-cylinder,4-stroke, air-cooled ,OHV,Horizontal side shaft, Auto-spped gasoline engine