WARNING
Before fitting the blades, set the
retaining latch to ƒ and remove the
battery – this helps reduce the risk of
injury.
Remove the mowing head.
N
Replace blades as shown in the
N
illustrated instructions.
Mount the mowing head on the
N
machine.
FSA 90, FSA 90 R
Sharpening Metal Cutting
Blades
Use a sharpening file (special
N
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.
Sharpen frequently, take away as
N
little metal as possible – two or three
strokes of the file are usually
enough.
1
1
2
2
Resharpen the teeth (1) uniformly –
N
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
After resharpening about 5 times,
N
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.
1
2
English
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