Honda EU3000is Owner's Manual page 56

SERVICING YOUR GENERATOR
5. Inspect the spark plug. Replace it if
the electrodes are worn or fouled,
or if the insulator is cracked or
chipped. Clean the spark plug with
a wire brush if it is to be reused.
6. Measure the spark plug electrode
gap with a wire-type feeler gauge.
Correct the gap, if necessary, by
carefully bending the side
electrode.
Spark plug gap:
0.028–0.031 in (0.7–0.8 mm)
7. Make sure that the spark plug sealing washer is in good condition, and thread
the spark plug in by hand to prevent cross-threading.
8. After the spark plug is seated, tighten with a spark plug wrench to compress
the washer.
If reinstalling a used spark plug, tighten 1/8–1/4 turn after the spark plug is
seated.
If installing a new spark plug, tighten 1/2 turn after the spark plug is seated.
Torque: 13.0 lbf·ft (17.7 N·m, 1.8 kgf·m)
A loose spark plug can overheat and damage the engine.
Overtightening the spark plug can damage the threads in the cylinder head.
9. Attach the spark plug cap.
10. Reinstall the spark plug inspection cover and tighten the cover screw.
11. Close and latch the left side maintenance cover.
54
SIDE ELECTRODE
0.028–0.031 in
(0.7–0.8 mm)
SEALING
WASHER
INSULATOR