4. Clean out plug wells with compressed air to remove any loose dirt or debris.
5. Rinse plug wells with water and dry with compressed air.
NOTICE
Spark plug wells have drain holes built into the cylinder head to allow water to
drain out.
6. Remove spark plugs
e
using a 5/8” spark plug socket with an extension.
7. Inspect electrodes for wear and carbon buildup. Look for a sharp outer edge
with no rounding or erosion of the electrodes.
8. Clean with electrical contact cleaner or a glass bead spark plug cleaner only.
IMPORTANT
A wire brush or coated abrasive should not be used.
9. Measure gap with a wire gauge. Adjust gap if necessary by carefully bending
the side electrode.
10.If necessary, replace spark plug with proper type.
IMPORTANT
Severe engine damage may occur if the incorrect spark plug is used.
Recommended Spark Plug:
NGK MR7F
123
MAINTENANCE