Honda EM2500X Owner's Manual page 43

3. Use a brush to remove carbon deposits from the spark arrester
screen.
4. Inspect the screen for breaks or tears and replace it if necessary.
5.Check the muffler gasket; replace if damaged. Reinstall the muffler
gasket, the spark arrester, the muffler and the muffler protector in
the reverse order of removal.
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