47FS 90, FS 90 R
English / USA
: Use a file (special accessory) to 
sharpen cutting tools. In case of 
more serious wear or nicks: 
Resharpen with a grinder or have 
work done by STIHL dealer.
: Resharpen frequently, take away as 
little material as possible ā two or 
three strokes of the file are usually 
enough. 
To avoid out-of-balance
: After resharpening about 5 times, 
have blade checked on STIHL 
balancer (special accessory) and 
rebalanced as necessary.
: Resharpen the cutters (1) uniformly 
ā do not alter the contour of the 
parent blade (2) in any way.
See cutting tool packaging for additional 
sharpening instructions.
Fuel pickup body in tank
: Have the pickup body in the fuel 
tank replaced every year.
STIHL recommends that maintenance 
and repair work be carried out only by 
authorized STIHL dealers.
Sharpening 
Metal Cutting Tools
2
2
1
2
1
1
002BA042 KN
Inspections and 
Maintenance by 
Dealer