Stihl FS 90 Instruction Manual page 30

Removing Mounting Hardware
: Block the shaft – see next section
on "Blocking the Output Shaft".
: Use the combination wrench (6)
(supplied with machine or available
as special accessory) to unscrew
the nut (3) clockwise (left-hand
thread) from the shaft (2).
: Pull the thrust washer (5) off the
shaft (2).
FS 90, FS 90 R
The rider plate (4) is in the parts kit
supplied with the machine.
: Go to "Mounting the Mowing Head"
or "Mounting Metal Cutting Tools".
Blocking the Output Shaft
2
8
7
: Insert the stop pin or screwdriver (7)
(supplied with machine or available
as special accessories) in the hole
(8) in the gearhead as far as stop –
apply slight pressure.
: Rotate nut or cutting tool on the
shaft (2) until the stop pin slips into
position and blocks the shaft.
7
Mounting the Mowing Head
Keep instruction sheet for mowing head
in a safe place.
: Screw the
STIHL SuperCut 20-2,
STIHL AutoCut 25-2,
STIHL AutoCut C 25-2,
STIHL TrimCut 30-2,
STIHL PolyCut 20-3
counterclockwise onto the shaft (1)
as far as stop.
: Block the output shaft.
: Tighten down the mowing head.
Remove the tool used to block the
shaft.
English / USA
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