Inspection

Inspect them for:
- Electrode wear
- Carbon deposits
- Insulator damage

If any abnormality is found, adjust air gap, clean with spark plug cleaner or replace them with specified new plug.

Spark plug air gap "a":
1.0 - 1.1 mm (0.039 - 0.043 in.)

Spark plug type:
NGK BKR6E-11/IFR6E-11
DENSO K20PR-U11/SKPR-A11

NOTE: It is highly recommended to use NGK IFR6E-11 for better engine starting performance.