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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.

Tecumseh flywheel key (woodruff 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

Key

Flywheel key

Flywheel Spacer

Key-hi pro .250x0.750

SQ key

Key

Key flywheel

Grip-yellow gear

Key

Key

Key hi-pro .250x2.5

Flywheel Key for Tecumseh small engine
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