Honda WB20XT Manual page 26

5. Spark arrester maintenance (optional part)
The muffler becomes very hot during operation and remains hot for a
while after stopping the engine. Be careful not to touch the muffler
while it is hot. Allow it to cool before proceeding.
1. Remove the two 8 mm nuts, and remove the muffler.
2. Remove the four 5 mm self-tapping screws, and remove the muffler
protector from the muffler.
3. Remove the 4 mm screw from the spark arrester, and remove the
spark arrester from the muffler.
MUFFLER PROTECTOR
MUFFLER
8 mm NUTS
4. Use a brush to remove carbon
deposits from the spark arrester
screen. Be careful to avoid
damaging the screen.
The spark arrester must be
serviced every 100 hours to
maintain its efficiency.
The spark arrester must be free of breaks and holes. Replace, if
necessay.
5. Install the spark arrester, muffler protector, and muffler in the
reverse order of disassembly.
26
5 mm SELF-TAPPING
SCREWS
4 mm SCREW
SPARK ARRESTER
SPARK
ARRESTER
SCREEN