2007 Subaru Forester Spark Plug Removal and Installation

download REMOVAL CAUTION: All spark plugs installed on an engine, must be of the same heat range. Spark plug CHAMPION: RC10YC4 NGK: BKR5E-11 (Alternate) NGK: BKR6E-11 (Alternate) RH SIDE 1. Disconnect the ground cable from battery. 2. Remove the resonator chamber. 3. Remove the spark plug cords by pulling boot, not the cord itself. 4. [...]