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Briggs & Stratton flywheel key. The flywheel key aligns the flywheel in the correct position on the crankshaft. If the engine stops suddenly due to hitting a hard object, the flywheel key shears in half to prevent damage to the engine. If the flywheel key is broken, the engine won't start.

Flywheel key pack of three

Key

Key-flywheel

Key-flywheel

Key-hi pro .156x0.625

Key-hi pro .250x1.375

Key-hi pro .125x0.531

Key-hi pro .250x0.750

Key hi-pro .250x2.5

Key-woodruff

50 pack of Flywheel Key 222698S. This key aligns the flywheel with the crankshaft for most Briggs & Stratton engines.
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