Stihl FS 311, Instruction Manual, Page: 17 / 40

7.3 Mounting the Thrust Plate and
Guard Washer
002BA407 KN
1
2
3
4
► Fit the thrust plate (1) and guard washer (2) on
the shaft (3).
NOTICE
The thrust plate (1) on the gearbox is necessary
for mounting all cutting attachments.
NOTICE
The guard washer (2) is required for mounting
–
mowing heads
–
grass cutting blades
–
brush knives
–
shredder blades
to the gearbox. The guard washer is not required
for mounting circular saw blades.
7.4 Checking the Thrust Plate
1
2
1
681BA196 KN
2
The thrust plate consists of the thrust plate
body (1) to which a captive guard washer (2) is
fitted.
WARNING
Never use a thrust plate without the guard
washer. Always replace a thrust plate if the
guard washer is missing.
7.5 Cleaning Gearbox Mounting
Hardware for Cutting Attach‐
ment
002BA407 KN
1
2
3
4
NOTICE
Check inside of guard ring (4) and area around it
for dirt at regular intervals, or when you change
the cutting attachment, and clean if necessary as
follows:
► Pull the guard washer (1) and thrust plate (2)
off the shaft.
► Thoroughly clean the guard ring, shaft, thrust
plate and guard washer – do not remove the
guard ring.
7.6 Blocking the Shaft
2
3
1
0812BA021 KN
2
The output shaft (1) must be blocked with the
stop pin (2) to mount or remove cutting attach‐
ments. The stop pin is included with the machine
and is available as a special accessory.
► Insert the stop pin (2) in the bore (3) in the
gearbox as far as stop, apply slight pressure.
7 Mounting the Cutting Attachment English
0458-433-0121-B 17