Echo HC-155 - Manual (Page 19)

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1. Remove spark plug lead.
2. Remove muffler cover.
3. Remove starter cover.
4. Use brush to remove dirt from cylinder fins.
IMPORTANT
DO NOT use a metal scraper to remove dirt from the cylinder fins.
5. Assemble components in reverse order.
exhaust system
Spark Arrestor Screen
Level 2.
Parts required: Screen, Gasket
1. Remove spark plug lead from spark plug, and remove engine or
muffler cover.
2. Place piston at Top Dead Center (TDC) to prevent carbon/dirt from
entering cylinder.
3. Remove exhaust guide (A), gasket (B), and screen (C) from muffler
body.
4. Clean carbon deposits from muffler components.
NOTE
When cleaning carbon deposits, be careful not to damage the cata-
lytic element inside muffler.
5. Replace screen if it is cracked, plugged or has holes burned through.
6. Install engine cover or muffler cover and attach spark plug lead.
A
B
C