12V Electric Start, Has Fuel Pump, HAS OIL COOLER & OIL FILTER 16A Alternator w Regulator. These engines are specially designed for zero turn mowers and other high debris applications to endure extended use in extreme conditions. Bore 3.12 in. Stroke 2.89 in. Oil Capacity 64 fl. MUFFLER IS NOT INCLUDED. Crankshaft, Drilled and Tapped 7/16-20 1/4-Sq. Keyway 4.29 Crank Length. HAS Fuel Pump and Oil Pump w Filter. Mechanical compression release for easy, reliable starting. Chrome plated exhaust valves reduce valve wear. Premium high capacity air, oil and fuel filters provide longer. Briggs and Stratton Dealer.