Carburetor float bowl. If the carburetor is leaking, one of the float bowl gaskets may be worn out.
Briggs & Stratton starter gear (also called a pinion gear), 16-tooth, plastic. The starter gear engages the flyhweel to start the engine. If the teeth on the starter gear are worn out, the engine may not start.
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.
Lock nut with nylon insert.
Spark plug boot
Seal-o ring for intake elbow
Quick-turn oil drain valve
Nylon insert locking nut. Used as part of the shear bolt assembly, as well as other locations within the equipment.
Recoil Spring, Most Rewind Starter Engines w/Starter Clutch
Recoil Pulley, 5-16 HP