Shop replacement repair parts for Briggs & Stratton Small Engine model 12S902/0150-B1

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.

Briggs & Stratton Spark Plug (RC12YC), Selected Engines 3/LC Gas (.020 gap)

Armature-magneto

Flywheel key pack of three

Starter-rewind

On-Off Switch

Carburetor