Honda TRX450ER Owner's Manual page 136

3. Use a brush to remove carbon deposits from the spark arrester screen
( ). Be careful to avoid damaging the spark arrester screen. 6
The spark arrester must be free of breaks and holes. Replace, if
necessary. Check the gasket. Replace, if necessary.
(6) spark arrester screen
4. Install the gasket to the muffler, the spark arrester, and the muffler
tail cover and tighten the bolts securely.
Spark Arrester
(6)
Servicing Your Honda 127