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SERVICING YOUR GENERATOR
SPARK PLUG
WRENCH
SPARK PLUG CAP
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5. Inspect the spark plug. Replace it if the electrodes are worn or if the insulator is
cracked, chipped, or fouled.
6. 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: 0.024-0.028 in
(0.6-0.7 mm)
7. Make sure that the spark plug sealing washer is in good condition, and thread the
spark plug in by hand to prevent cross-threading.
8. After the spark plug is seated, tighten with a spark plug wrench to compress the
sealing washer.If reinstalling a used spark plug, tighten 1/8-1/4 turn after the spark plug
seats.If installing a new spark plug, tighten 1/2 turn after the spark plug seats.
A loose spark plug can overheat and damage the engine.
Overtightening the spark plug can damage
the threads in the cylinder head.
9. Reinstall the spark plug cap on the spark plug securely.
10. Reinstall the spark plug maintenance cover.
NOTICE
SEALING WASHER
0.024 – 0.028
in (0.6 – 0.7mm)
Spark arrester service
The spark arrester must be serviced every 100 hours to keep it
functioning as designed.
If the engine has been running, the muffler will be very hot. Allow
the muffler to cool before servicing the spark arrester.
Clean the spark arrester as follows
1. Loosen the cover screw and remove the spark arrester maintenance cover.
2. Remove the 4 mm self-tapping screw and the spark arrester.
3. Use a brush to remove carbon deposits from the spark arrester screen.
Be careful to avoid damaging the screen.
The spark arrester must be free of breaks and tears. Replace the spark arrester if it is
damaged.
4. Reinstall the spark arrester and spark arrester maintenance cover.
SPARK ARRESTER
SPARK ARRESTER
MAINTENANCE COVER
COVER SCREW