Champion Spark Plug (RC12YC). The spark plug ignites the fuel and air mixture in the cylinder to power the engine. If the spark plug is burnt, fouled or damaged the engine may not start or may run rough.
Briggs and Strartton in-line fuel filter with 40 micron rating and 1/4" inlet & outlet. If the engine does not start then the fuel filter may be clogged and not allowing enough fuel to enter the carburetor.
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 exhaust push rod, steel.
Briggs & Stratton rocker cover gasket. Be certain that all surfaces are clean and dry before installing this gasket.
Lawn mower steering pinion gear.
Push rod for intake valve.
Crankcase oil seal, PTO side
Ignition coil (or magneto armature). The ignition coil sends voltage to the spark plug while the engine is running. If the ignition coil is defective, the engine may not start.
Fuel inlet hose connector
Screw, 1/4-20 x .5