Shop replacement repair parts for Lawn Boy Lawn Mower model 8480

Lawn mower 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.

Gasket

Filter Cover Retainer

Ret ring

Screw


Washer m

Ring-retaining

Spring


Washer

Nut

Airvane and shaft asm

Washer

Washer-thrust