Exhaust System - Echo PB-500 H Operator's Manual

MAINTENANCE
Cleaning Cylinder Fins
1. Disconnect spark plug lead from spark plug.
2. Remove engine cover.
3. Clean cylinder fins (A) to allow cooling air to pass freely
4. Replace engine cover.
5. Connect spark plug lead

Exhaust System

Spark Arrestor Screen
Level 2.
Parts Required: Spark Arrestor Screen, Gasket
Carbon deposits in muffler will cause a drop in engine output
and overheating. Spark arrestor screen must be checked
periodically.
1. Remove spark plug and engine cover.
2. Place piston at Top Dead Center (TDC) to prevent
carbon/dirt from entering cylinder.
3. Remove spark arrestor cover (A), gasket (B) and spark
arrestor screen (C) from muffler.
4. Clean carbon deposits from muffler components.
Note: When cleaning carbon deposits, be careful not to
damage the catalytic element inside muffler.
5. Replace screen if it is cracked, plugged, or has holes burned through.
6. Assemble components in reverse order.
Exhaust Port Cleaning
Level 2.
Parts Required: As needed: Muffler Gasket
1. Remove spark plug lead from spark plug and remove
engine cover.
2. Place piston at top dead center. Remove muffler (A) muffler
gasket (B).
3. Use a wood or plastic scraping tool to clean deposits from
cylinder exhaust port.
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PB-500 H/T
A
B
C
B
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© 02/2014 ECHO Inc.
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