Stihl FS 91 Instruction Manual page 28

English
Blocking the Shaft
2
7
6
The output shaft (2) must be blocked
with the stop pin (6) or screwdriver (6) to
mount or remove cutting attachments.
These parts come standard with the
machine or are available as special
accessories.
Insert the stop pin (6) or
N
screwdriver (6) in the hole (7) in the
gearbox as far as stop – and apply
slight pressure.
Rotate shaft, nut or cutting
N
attachment until the stop pin slips
into position and blocks the shaft.
26
Removing the Mounting Hardware
6
Block the shaft (5) with the stop pin
N
(1).
Use the combination wrench (2) to
N
loosen and remove the nut (3)
clockwise (left-hand thread).
Take the rider plate (4) off the
N
shaft (5). Do not remove the thrust
plate (6).
Mounting the Cutting Attachment
WARNING
Risk of injury from thrown objects and
contact with the cutting attachment. Use
a deflector that matches the cutting
attachment – see "Mounting the
Deflector".
Fitting Mowing Head with Screw
Mounting
Keep the instruction leaflet for the
mowing head in a safe place.
2
3
4
5
6
1
N
N
N
N
NOTICE
Remove the tool used to block the shaft.
3
4
1
2
Fit the thrust plate (1).
Screw the mowing head (3)
counterclockwise on to the shaft (4)
as far as stop.
Block the shaft (4) with the stop pin
(2).
Tighten down the mowing head (3)
firmly.
FS 91, FS 91 R