Engine:single cylinder,two strokes,water cooled Rating Power:3.8kw/11000rpm Durative Power:3.3kw/9000rpm Overload Power:4kw/11500rpm Max Power:4.3km/12000rpm Fuel Consumption:680 Max Torque:4.2N.M/11500rpm Min Idle Rotate Speed:3500+300rpm Max Housepower:5.7PS Bore&Stroke:40*37mm Displacement:46.5cc Compression Ratio:9.5 Start : pull start Weight:5.5kgs Dimension:330x190x260mm