Echo CS-341 - Manual (Page 20)

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IMPORTANT
Carbon deposits in muffler will cause a drop in engine
output and overheating. Spark arrestor screen must be
checked periodically.
1. Remove muffler cover.
2. Remove spark arrestor screen cover, gaskets, and
screen from muffler body.
3. Clean carbon deposits from muffler components.
NOTE
When cleaning carbon deposits, be careful not to dam-
age the catalytic element inside muffler.
4. Replace screen if it is cracked, plugged, or has holes
burned through.
5. Assemble components in reverse order.
Cooling system Cleaning
• Remove spark plug lead.
• Remove two (2) muffler cover screws and muffler cover.
• Remove four (4) recoil starter housing screws and starter
housing.
• Use a stiff bristle cleaning brush (do not use a metal
brush) to remove dirt from cylinder fins in muffler and
ignition coil areas.