0458-725-8621-B
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English 
22 Inspection and Maintenance
To sharpen the metal cutting attachment:
► Use a flat file to sharpen dull cutting attachments. In case 
of more serious wear or nicks, resharpen with a grinder or 
have it sharpened by an authorized STIHL servicing 
dealer.
► Sharpen frequently and take away as little metal as 
necessary to create a sharp edge. Two or three strokes of 
the file are usually enough.
► Resharpen the teeth uniformly. Take care not to alter the 
contour of the blade body.
► See cutting attachment packaging for additional 
sharpening instructions. Keep the packaging for future 
reference.
To balance the metal cutting attachment:
► After resharpening about 5 times, check the cutting tool for 
out-of-balance on a STIHL balancer (special accessory) 
or have it checked and rebalanced by an authorized 
STIHL servicing dealer as necessary.