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 & Stratton Spark Plug (RJ19LM). If the engine does not start or runs poorly then the spark plug may be defective and will need replacement.
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.
MTD flange lock nut, 5/16-18.
Washer 3/8 Splt Lock
Blade retaining bolt
MTD flange lock-nut, 1/4-20.
Screw, 1/4-20 x .5
Two cycle engine fuel filter and line assembly. If the fuel filter is clogged, it will restrict the flow of fuel to the carburetor. As a result, the engine may not start.
Line fuel return
Fuel filter-zs ver
Carriage bolt, 5/16-18