The Tecumseh 640297 Lawn Mower Carburetor helps provide the correct air-fuel mixture for smooth and reliable engine performance. This replacement carburetor draws fuel and combines it with incoming air before delivering the mixture to the engine for combustion. Its design supports dependable starting, steady engine operation, and consistent fuel delivery during normal use. Replacing a... https://www.wholetoolbox.com/tecumseh-640297-lawn-mower-carburetor/640297.html