Stihl FS 91 Instruction Manual page 29

Remove the mowing head.
Block the shaft (4) with the stop pin
N
(2).
Unscrew and remove the mowing
N
head (3) clockwise.
Fitting Mowing Head without Screw
Mounting
Keep the instruction leaflet for the
mowing head in a safe place.
STIHL FixCut 31-2
Fit the thrust plate (2).
N
Place the mowing head on the
N
thrust plate (2).
WARNING
Collar (see arrows) must engage the
mowing head's mounting hole.
FS 91, FS 91 R
Push the thrust washer (3) (convex
N
side up) over the shaft (1) until it is
seated on the base.
Block the shaft.
N
Use the combination wrench (5) to
N
screw the mounting nut (4) onto the
output shaft and it tighten down
firmly.
WARNING
If the mounting nut has become too
loose, fit a new one.
NOTICE
Remove the tool used to block the shaft.
Removing the Mowing Head
Block the shaft.
N
Use the combination wrench to
N
loosen and unscrew the mounting
nut counterclockwise from the
output shaft.
Mounting Metal Cutting Attachments
Keep the leaflet and packaging of the
metal cutting attachment in a safe place.
WARNING
Wear protective gloves to reduce the
risk of direct contact with the sharp
cutting edges.
Mount only one metal cutting
attachment.
Mount the cutting attachment the right
way round
Cutting attachments with 3 or 4 teeth (1,
3) may point in either direction – these
cutting attachments must be turned over
regularly to help avoid one-sided wear.
The cutting edges of cutting
attachments 2, 4 and 5 must point
clockwise.
Direction of rotation is indicated by an
arrow on the inside of the deflector.
English
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