CAUTION
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 required 1/8 to 1/4 turn after being
seated.
9. Reinstall the spark plug inspection cover and tighten the cover screw.
10. Close and latch the left side maintenance cover.
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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.
7.5 Spark plug service
Recommended spark plug: F6RTC
To ensure proper engine operation, the spark plug must be properly gapped and
free of deposits.
1. Open the left side maintenance cover.
2. Remove the spark plug cap.
3.
4.
Use the wrench to remove the spark plug.
Clean any dirt from around the spark plug base.
Spark plug wrench
Spark plug lover
Fig.14
5. Visually inspect the spark plug. Discard it if the insulator is cracked or chipped.
Clean the spark plug with a wire brush if it is to be reused.
6. Measure the plug gap with a feeler gauge.
The gap should be 0.5-0.75mm(0.02-0.03in). Correct as necessary by carefully
bending the side electrode.
Fig. 15
0.5-0.75mm
(0.02-0.03in)
Plug gap
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