Briggs and Stratton 15C134-3023-F8 Snow Series Max 250cc 11.50 Gross Torque Engine with 1-Inch Diameter by 2-3/4-Inch Crankshaft 1-Inch diameter by 2-3/4-inch length crankshaft, 1/4-inch keyway, 3/8-24 drilled and tapped 3-Quart fuel tank for long engine run time 60 Watt AC alternator 110 Volt eletric start 2-year consumer engine warranty