Stihl FS 120 Instruction Manual page 20

English
10.3 Blocking the Shaft
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 screwdriver (6) in the
hole (7) in the gearbox as far as stop – and
apply slight pressure.
► Rotate shaft, nut or cutting attachment until
the stop pin slips into position and blocks the
shaft.
10.4 Removing the Mounting Hard‐
ware
► Block the shaft.
► Use the combination wrench (1) to loosen and
remove the nut (2) clockwise (left-hand
thread).
20
2
6
1
2
3
4
5
10 Mounting the Cutting Attachment
► Take the thrust washer (3) off the shaft (4). Do
not remove the thrust plate (5).
10.5 Mounting the Cutting Attach‐
ment
WARNING
Use a deflector that matches the cutting attach‐
ment – see "Mounting the Deflector".
10.6 Fitting the mowing head with
screw mounting
Keep the supplement sheet for the mowing head
in a safe place.
► Fit the thrust plate
► Turn the mowing head anticlockwise on the
shaft (1) as far as it will go
► Retain the shaft
► Tighten the mowing head
NOTICE
Remove the tool that was used to block the
shaft.
10.7 Removing the Mowing Head
► Retain the shaft
► Turn the mowing head clockwise
1
0458-250-0121-F