Specs: Displacement: 3.49cc Maximum power: 2.60 hp RPM (at max power): 31000 rpm Practical RPM Range: 6000-37200 rpm Bore x Stroke: 16.26mm x 16.80mm Ports: 5 CrankShaft Type: SG Glow Plug Type: Standard Exhaust Type: Rear Carburetor: 8 mm slide type, composite body