Honda F220 Owner's Manual page 38

Spark arrester maintenance (equipped type)
In Europe and other countries where the machinery directive
2006/42/EC is enforced, this cleaning should be done by your servicing
dealer.
If the engine has been running, the muffler will be very hot. Allow it to
cool before proceeding.
CAUTION:
The spark arrester must be serviced every 6 month or 100 hours to
maintain its efficiency.
1.Remove the muffler protector by removing the three 5 mm bolts.
2.Remove the spark arrester from the muffler by removing the special
screw.
(Taking care not to damage the wire mesh.)
NOTE:
Check for carbon deposits around the exhaust port and the spark
arrester, and clean if necessary.
5 mm BOLTS
3.Use a brush to remove carbon deposits from the spark arrester
screen.
CAUTION:
Be careful not to damage the spark arrester screen.
NOTE:
The spark arrester must be free of breaks and holes. Replace the spark
arrester if it is damaged.
4.Install the spark arrester and the muffler in the reverse order of
disassembly.
MUFFLER PROTECTOR
SPECIAL SCREW
SPARK ARRESTER
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