Spark Arrester Maintenance - Honda EM3500SX Owner's Manual

6. Check that the spark plug washer is in good condition, and thread
the spark plug in by hand to prevent cross-threading.
7. After the spark plug is seated, tighten with a spark plug wrench to
compress the washer.
If installing a new spark plug, tighten 1/2 turn after the spark plug
seats 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.
The spark plug must be securely tightened. An improperly tightened
spark plug can become very hot and could damage the engine.
Never use spark plugs which have an improper heat range. Use only
the recommended spark plugs or equivalent.

SPARK ARRESTER MAINTENANCE

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.
Clean the spark arrester as follows:
1. Loosen the screw by the exhaust port of the muffler and remove the
spark arrester.
2. Use a brush to remove carbon deposits from the spark arrester
screen.
Inspect the screen for breaks or tears and replace it if necessary.
3. Install the spark arrester in the reverse order of removal.
SPARK ARRESTER
SCREEN
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SPARK ARRESTER