Cooling System; Exhaust System - Echo PB-2155 Operator's Manual

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CoolIng sysTems
Level 2.
Parts Required: None if you are careful.
IMPORTANT
To prevent overheating and engine seizure, cooling air comes
through the grille and is pushed by a cooling fan through the cyl-
inder fin area to an opening in the front of the engine cover, taking
away combustion heat. The grille and cylinder fins must be kept
clean of grass, dust and any debris. Engine failure due to lack of
this "Normal Maintenance" is not covered by warranty.
Cleaning Grille
Remove accumulated debris from crankcase intake grille above the fuel
tank.
Cleaning Cylinder Fins
1. Remove spark plug.
2. Remove engine cover and clean cylinder fins to allow cooling air
to pass freely.

exhausT sysTem

Level 2.
Parts Required: Spark arrester screen, gasket.
Muffler Spark Arrester
IMPORTANT
Carbon deposits in cylinder exhaust port and muffler will cause a
drop in engine output and overheating. Muffler exhaust port and
spark arrester screen must be checked periodically.
INTAKE
GRILLE