Briggs and Stratton 126M02-1031-F1 190cc 6.75 Gross Torque Engine with a 25-Mil diameter by 3-5/32-Inch Length Crankshaft, Keyway, and 7/16-20-Inch Tapped Large rewind starter reduces pulling effort for easy start Maintenance-free Magnetron electronic ignition for quick, dependable starts Mechanical compression release for smooth, quick starting Maxi-Clean automotive-type pleated paper air filter provides superior protection for long engine life Emission compliant - for sale in all 50-states