Briggs & Stratton 21M314-3019-F1 342cc 16.50 Gross Torque Snow Prof Series 1-Inch Dia X 2-29/32-Inch Length Crankshaft Keyway, Tapped 3/8-24 1-Inch diameter x 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 3 Amp DC and 14 Volts AC alternator 110 Volt electric start CARB Compliant