type air cooled, single cylinder ohc 4 stroke bore and stroke 42mm x 35.6mm displacement 49cc compressionratio 9.5 : 1 carburettor round slide type lubrication system wet sump oil capacity 0,9 l starting system kickstart maximum horsepower 2,5 ps @ 7.000 RPM (DIN) maximum torque 0,3 kg*m @ 5.000 RPM