The Briggs & Stratton 799871 is a genuine OEM Carburetor Assembly used for single-cylinder vertical shaft engines. It is a critical component for mixing air and fuel, specifically designed for engines with auto-choke systems. Key Product Details Purpose: Regulates the fuel-air mixture to ensure smooth starting and engine performance. Engine Compatibility: Fits select 12 cu. in. vertical shaft L-head engines, including model series 122K02, 122M02, and 122T02. Common Equipment: Widely used on Toro Recycler 22″ mowers, as well as Craftsman and Troy-Bilt walk-behind mowers. Replaces Part Numbers: 790845, 799866, 796707, and 794304.