Honda EU3000IS1AN Owner's Manual page 52

SERVICING YOUR GENERATOR
6. Visually inspect the spark plug.
Replace it if the electrodes are
worn or if the insulator is
cracked, chipped, or fouled.
7. Measure the spark plug
electrode gap with a wire-type
feeler gauge. Correct the gap, if
necessary, by carefully bending
the side electrode.
The gap should be:
0.028–0.031 in (0.7–0.8 mm)
8. Check that the spark plug sealing washer is in good condition, and
thread the spark plug in by hand to prevent cross-threading.
9. After the spark plug is seated, tighten with a spark plug wrench to
compress the washer.
If installing a new spark plug, tighten 1/2 turn after the spark plug
seats to compress the washer. If reinstalling a used spark plug,
tighten 1/8–1/4 turn after the spark plug seats to compress the
washer.
TORQUE: 18 N∙m (1.8 kgf∙m, 13 lbf∙ft)
A loose spark plug can overheat and damage the engine.
Overtightening the spark plug can damage the threads in the cylinder
head.
10. Attach the spark plug cap.
11. Reinstall the spark plug inspection cover and tighten the cover
screw.
12. Close and latch the left side maintenance cover.
50
SIDE ELECTRODE
0.028–0.031 in
(0.7–0.8 mm)
SEALING
WASHER
INSULATOR