Echo PB-620ST User Manual

Tools required:    Cross head screwdriver, soft metal brush 

Parts Required:   Spark arrestor screen, Gaskets (3)

 

 

 

IMPORTANT  

Carbon deposits in muffler will cause a drop in engine output and 

overheating.  Spark arrestor screen must be checked periodically.

1.  Remove spark plug lead from spark plug, and remove engine or 

muffler cover (5 screws).

2.  Remove spark arrestor cover (A), gaskets (B) and spark arrestor 

screen (C) from muffler.

3.  Clean carbon deposits from muffler components.

When cleaning carbon deposits, be careful not to damage the cata-

lytic element inside muffler.

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

through.

5.  Install engine cover or muffler cover and attach spark plug lead.

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.