Spark Plug: Service and Repair

Spark Plug Replacement

Removal Procedure
1. Remove the spark plug wire.
2. Loosen the spark plug 1 or 2 turns.
3. Brush or using compressed air, blow away any dirt from around the spark plug.
4. Remove the spark plug.







5. If removing more than one plug, place each plug in a tray marked with the corresponding cylinder number.

Installation Procedure
1. Correctly position the spark plug washer.
2. Inspect the spark plug gap. Adjust the gap as needed.

Spark plug gap: .....................1.524 mm (0.060 in)

3. Hand start the spark plug in the corresponding cylinder.
4. Tighten the spark plug.

Tighten the plug to .........................15 N.m (11 lb ft) for used heads.
Tighten the plug to .........................20 N.m (15 lb ft) for NEW heads.







5. Install the spark plug wire.