Kipor SINEMASTER IG4300, Owner'S Manual

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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 0.028-0.031in (0.7-0.8mm). Correct
as necessary by carefully bending the side electrode.
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
Plug gap