Honda EU65is Manuel De L'utilisateur page 49

5. Visually inspect the spark plug. Discard it if the insulator is cracked,
chipped, or fouled. Clean the spark plug with a wire brush if it is to
be reused.
6. Measure the plug gap with a feeler gauge.
Correct as necessary by carefully bending the side electrode.
The gap should be:
0.7 − 0.8 mm (0.028
SEALING WASHER
7. Install the spark plug carefully by hand, to avoid cross-threading.
8. After a new spark plug has been seated by hand, it should be
tightened 1/2 turn with a wrench to compress its washer.
If a used plug is being reinstalled, it should only require 1/8 to 1/4
turn after being seated.
The spark plug must be securely tightened. An improperly
tightened plug can become very hot and possibly damage the
generator.
Never use a spark plug with an improper heat range.
9. Reinstall the spark plug inspection cover and tighten the cover
screw.
10. Close the left maintenance cover.
46
− 0.031 in)
0.7 0.8 mm −
(0.028 0.031 in) −
PLUG GAP