The MTD 651P06415 Carburetor helps deliver the proper air-and-fuel mixture for smooth and reliable engine operation. It regulates fuel flow and combines it with incoming air before the mixture enters the engine for combustion. This replacement carburetor can help restore proper fuel delivery when the original component becomes clogged, worn, or damaged. Replacing a faulty carburetor m... https://www.wholetoolbox.com/mtd-651p06415-carburetor/651P06415.html