Echo SRM-410U Cooling System, Exhaust System, Spark Arrestor Screen, Level, Parts Required None

GRASS TRIMMER/BRUSH CUTTER 25

OPERATOR'S MANUAL

COOLING SYSTEM

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 fin area. This flow 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 fins is considered “Normal Maintenance.” Any failure attributed to lack of maintenance is not warranted.

1.Periodically blow dirt and debris off cooling fins with a compres- sor and safety nozzle, or;

2.Remove engine and muffler covers, and brush off dirt and debris using the medium bristle brush.

EXHAUST SYSTEM

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 muffler 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 muffler body.

4.Clean carbon deposits from muffler components.

5.Replace screen if it is cracked, plugged, or has holes burned through.

A

E D C B

6.Assemble components in reverse order.