Engine Type: twostroke engine Cooling System: Forcedair Bore*strike: 33.4*28.4mm Displacement: 25cc Max Horsepower: 0.82kw/7500-8000rpm Max Torque:1.1N.m/6500rpm Fuel tank Capacity: 0.6L Starting system: Recoil start Carburetor: Diaphragm HC+Nox: 91.3g/kw.h Mixed ratio: 25:1