Echo SRM - 410U - Cooling System; Exhaust System

Gr a s s Tr i m m e r /Br u s h Cu T T e r
Op e r a T O r 's ma n u a l
25
c o o l I n g s y s t e m
Level 2.
Tools required: Air compressor and safety nozzle, or: 4 mm Hex
wrench, 25 - 50 mm (1 - 2 in.) cleaning brush.
Parts Required: None.
IMPORTANT
To maintain proper engine operating temperatures, cooling air must
pass freely through the cylinder n area. This ow of air carries
combustion heat away from the engine.
Overheating and engine seizure can occur when:
• Air intakes are blocked, preventing cooling air from reaching the
cylinder.
• Dust and debris build-up on the outside of the cylinder. This build-up
insulates the engine and prevents the heat from leaving.
Removal of cooling passage blockages and cleaning of cooling ns is
considered “Normal Maintenance.” Any failure attributed to lack of
maintenance is not warranted.
1. Periodically blow dirt and debris off cooling ns with a compres-
sor and safety nozzle, or;
2. Remove engine and mufer covers, and brush off dirt and debris
using the medium bristle brush.
e X h a u s t s y s t e m
Spark Arrestor Screen
Level 2.
Tools Required: Cross Head Screwdriver, Soft Metal Brush, 4 mm
Hex Wrench
Parts Required: Spark Arrestor Screen, Gasket
1. Remove mufer cover (A).
2. Place piston at Top Dead Center (TDC) to prevent carbon/dirt from
entering cylinder.
3. Remove spark arrestor screen cover (B), screen holder (C), gasket
(D), and screen (E), from mufer body.
4. Clean carbon deposits from mufer components.
5. Replace screen if it is cracked, plugged, or has holes burned
through.
6. Assemble components in reverse order.
A
B
C
DE