Clean the spark plugs using a wire brush.
Clean and remove the carbon or oxide deposits. Be careful not to scratch the ceramic insulator when doing this.
If deposits are too stubborn, replace the spark plugs.
After cleaning the spark plugs, measure the spark plug gap using a gap gauge.
NOTE:
Do not use a plug cleaner because the spark plugs are applied with platinum tip.
Spark plug gap L:
1.0 — 1.1 mm (0.039 — 0.043 in)
