Honda CBF600S 2006 Owner's Manual page 102

10. With the plug washer attached, thread the
spark plug in by hand to prevent cross-
threading.
11.Tighten the spark plug:
• If the old plug is good:
1/8 turn after it seats.
• If installing a new plug, tighten it twice to
prevent loosening:
a) First, tighten the plug:
NGK: 1/2 turn after it seats.
DENSO: 1 turn after it seats.
b) Then loosen the plug.
c) Next, tighten the plug again:
1/8 turn after it seats.
12. Reinstall the spark plug caps.
13. Install the remaining parts in the reverse
order of removal.
NOTICE
The spark plug must be securely tightened. An
improperly tightened plug can become very hot
and possibly damage the engine.
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