Honda CBF600S 2006 Owner's Manual page 101

(4)
(4) Spark plug wrench
8. Inspect the electrodes and center porcelain
for deposits, erosion or carbon fouling. If
the erosion or deposit is heavy replace the
plug. Clean a carbon or wet-fouled plug
with a plug cleaner, otherwise use a wire
brush.
9. Check the spark plug gap (5) using a wire-
type feeler gauge. If adjustment is
necessary, bend the side electrode (6)
carefully.
The gap should be:
0.8-0.9 mm (0.03-0.04 in)
(6)
(5) Spark plug cap
(5)
(6) Side electrode
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