Operation Manual

FSA 90, FSA 90 R
English
63
WARNING
Before fitting the blades, set the
retaining latch to ƒ and remove the
battery – this helps reduce the risk of
injury.
N Remove the mowing head.
N Replace blades as shown in the
illustrated instructions.
N Mount the mowing head on the
machine.
N Use a sharpening file (special
accessory) to sharpen dull cutting
attachments. In case of more
serious wear or nicks: Resharpen
with a grinder or have the work done
by a dealer – STIHL recommends a
STIHL servicing dealer.
N Sharpen frequently, take away as
little metal as possible – two or three
strokes of the file are usually
enough.
N Resharpen the teeth (1) uniformly –
do not alter the contour of the parent
blade (2) in any way.
See cutting attachment packaging for
additional sharpening instructions. Keep
the packaging for future reference.
Balancing
N After resharpening about 5 times,
check the cutting attachment for
out-of-balance on a STIHL balancer
(special accessory) or have it
checked by a dealer and re-
balanced as necessary – STIHL
recommends a STIHL servicing
dealer.
Sharpening Metal Cutting
Blades
2
2
1
002BA113 KN
2
1
1