Spark Plug: Service Precautions
NOTE: Twist the spark plug boot one-half turn in order to release the boot. Pull on the spark plug boot only. Do not pull on the spark plug wire or the wire could be damaged.NOTE: This engine has aluminum cylinder heads. Do not remove the spark plugs from a hot engine, allow it to cool first. Removing the spark plugs from a hot engine may cause spark plug thread damage or cylinder head damage.
IMPORTANT: While gapping the plug, ensure that the platinum pads remain aligned. Failure to keep the pads aligned will shorten the plug life.