Spark Plug: Service and Repair

REMOVE OR DISCONNECT

CAUTION: This engine has aluminum cylinder heads. allow the engine to cool before removing spark plugs or the spark plug threads in cylinder head may be damaged.

1. Grasp the spark plug boot, gently rotate 1/2 turn, and then pull the boot away from the spark plug.
2. Loosen each plug one or two turns.
3. Bush or air blast dirt away from the area around each spark plug.
4. Each spark plug and place it in a tray by cylinder number, to help identify and relate any unusual condition to the cylinder involved.

INSTALL OR CONNECT
1. Make certain cylinder head and spark plug threads are clean, and that washer is positioned on plug.
2. Make certain spark plugs are correctly gapped to 1.27 mm (0.050 in.).

NOTE: Start plugs by hand to help avoid damage from cross-threading.

3. Spark plugs into the cylinder head finger tight.

Tighten
Spark plug to 15 Nm (11 lb. ft.).

4. Install spark plug boots.