Echo PB-620H User Manual

Tools required:    25 - 50 mm (1 - 2 in.) cleaning brush, cross head  

 

 

 

 

screwdriver

Parts Required:   None, if you are careful.

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 grass 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 or cleaning of cooling fins is 

considered “Normal Maintenance.”  Any failure attributed to lack of 

maintenance is not warranted.

1.  Remove accumulated debris from intake grill between backpack 

frame and blower housing.

1.  Disconnect spark plug lead (A), and pull lead out of upper cover 

clamp and lower cover clamp.

2.  Remove 5 screws and remove engine cover (B).

3.  Clean cylinder fins (C) to allow cooling air to pass freely.

Tools required:    Cross head screwdriver, soft metal brush 

Parts Required:   Spark arrestor screen, Gaskets (3)