Echo SRM-410U Manual Do Utilizador

Three styles of metal blades are approved for use on the ECHO Brush 

Cutter.  The 8-tooth blade can be sharpened during normal mainte-

nance.  The clearing blade and 80 tooth blade require professional 

service.

Before sharpening, CLOSELY inspect blade for cracks (look at the 

bottom of each tooth and the center mounting hole closely), missing 

teeth and bending.  If ANY of these problems are discovered, replace 

the blade.

When sharpening a blade, always remove the same amount of materials 

from each tooth to maintain balance.  A blade that is not balanced will 

cause unsafe handling due to vibration and can result in blade failure.

Tool required:    Flat fi le (preferred).  Electric grinder if special care is  

used.  Round (rat tail) fi le for gullet (radius).

1.  File each tooth at a 30 degree angle a specifi c number of times,  

eg.  4 strokes per tooth.  Work your way around the blade until   

all teeth are sharp.

2. DO 

NOT 

fi le the 'gullet' (radius) of the tooth with the fl at fi le.   

The radius must remain.  A sharp corner will lead to a crack and  

blade failure.

IMPORTANT
If an electric grinder is used, use care not to overheat teeth, do not 
allow tips/tooth to glow red or turn blue.  DO NOT place blade in 
cooling water.  This will change the temper of the blade and could 
result in blade failure.

3.  After sharpening teeth, check each tooth radius for evidence of a  

square (sharp) corner.  Use the round (rat tail) fi le to renew the 
radius.