SERVICING YOUR GENERATOR
70
3. 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.
4. 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)
5. Make sure that the spark plug sealing washer is in good condition, and thread
the spark plug in by hand to prevent cross-threading.
6. 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
seats to compress the washer.
If installing a new spark plug, tighten 1/2 turn after the spark plug seats to
compress the washer.
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.
7. Attach the spark plug cap.
SIDE ELECTRODE
0.028–0.031 in (0.7–0.8 mm)
SEALING WASHER
INSULATOR
31Z238200.book 70 ページ ２０２０年２月２０日 木曜日 午前１０時５７分
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