The Briggs & Stratton 591308 Engine Carburetor helps provide the proper air-fuel mixture for smooth and reliable engine performance. Designed as a replacement carburetor, it mixes fuel with incoming air and delivers the mixture to the engine for combustion. Proper fuel metering supports easier starting, consistent engine speed, efficient fuel use, and dependable power during regular o... https://www.wholetoolbox.com/briggs-stratton-591308-engine-carburetor/591308.html