GO .21 Rear Pull Starter Crank 14mm 3Port Code R2100-M10HSG Maximum power 2.60 hp R.P.M 31.000 rpm Practical Range 6.000/39.000 rpm Bore/Stroke 16.26mm/16.80mm Ports 3 Crankshaft 14mm SG Glow Plug Type Standard Exhaust Type Rear