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.
Carburetor assembly with fuel shut-off solenoid.
If the engine runs rough, the carburetor may be restricted and should be cleaned, rebuilt, or replaced.
Module, ignition (cdi fixed)