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 the sealing washer. If a used plug is being reinstalled, it should only require 1/8 to 1/4 turn
after being seated.
9. Reinstall the spark plug cap.
10. Close and latch the service door.
■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.
7.6 Spark arrester maintenance
1. Remove the generator rear cover to access the spark arrestor.
2. Remove the spark arrestor from the muffler by unscrewing the clamp.
3. Clean the spark arrestor with a stiff wire brush.
4. Replace if the wire mesh is perforated or torn.
5. Reinstall the spark arrester.
6. Reinstall rear cover.
■If the generator has been running, the muffler will be very hot. Allow it
to cool before proceeding.
■The spark arrester must be serviced every 100 hours to maintain its
efficiency.
■Inspect the spark arrester screen for holes or tears. Replace as
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