Overview Reviews Similar Products –> Product Description Worn or damaged timing components can make your generators engine run unevenly, lose power, or fail to start when you need it most. The Generac 0E4357J Crankshaft and Gear restores critical engine timing function, so pistons and valves work in sync as the engine turns. Replacing this assembly helps your generator regain smoother mechanical coordination and stronger overall engine performance. The crankshaft and gear work together to control valve movement and generator engine timing essentially telling the engine when to intake air and fuel and when to expel exhaust. If the Crankshaft or its gear teeth become worn, misaligned, or damaged, engine efficiency and responsiveness can suffer, leading to rough running or reduced output. To restore coordinated internal motion, a replacement crankshaft and gear that match the original mounting points and align precisely with the rest of the engine
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