The Tecumseh 37785 Lawn Mower Crankshaft helps convert piston movement into rotational power for smooth engine operation. This crankshaft connects with the connecting rod and other internal engine components, transforming the piston’s up-and-down motion into rotation that drives the engine output. The part is identified as a crankshaft in Tecumseh engine parts listings and is used in ... https://www.wholetoolbox.com/tecumseh-37785-lawn-mower-crankshaft/37785.html