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.
Briggs & Stratton Original Equipment 696854 Extended Life Oil Filter. For optimum performance, we recommend changing the oil in your small engine after the first five hours of use. After that, change the oil on a yearly basis or after every 50 hours of use (whichever comes first).
Fuel pump. If this fuel pump is being installed on a Intek V-Twin engine originally equipped with a metal fuel pump, related item 1567967. The fuel pump supplies fuel to the carburetor while the engine is running. If the fuel pump is clogged, the engine may not start or may run rough.
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.