Briggs and Stratton 126M02-1015-F1 190cc 675 Series Push Mower Engine with 7/8-Inch by 3-5/32-Inch Length Crankshaft Aluminum alloy bore for cooler operation Maintenance-free Magnetron electronic ignition for quick, dependable starts Large rewind starter reduces pulling effort for easy starts Mechanical compression release for smooth, quick starting Emission compliant - for sale in all 50-states