The MTD 951-12791A Carburetor Assembly regulates fuel and air mixing to support proper engine combustion. It meters fuel and combines it with incoming air before delivering the mixture to the engine, helping maintain consistent operation. Proper carburetor function supports engine starting and steady performance during equipment use. Replacing a clogged or damaged assembly can help re... https://www.wholetoolbox.com/mtd-951-12791a-carburetor-assembly/951-12791A.html