Stihl FS 490 C-M - Guard Ring and Thrust Plate Procedures

FS 360 C-M, FS 410 C-M, FS 460 C-M, FS 490 C-M
English
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Guard ring for mowing applications
Always fit guard ring (1) when using
– mowing heads
– grass cutting blades
– brush knives
– shredder blades
to ensure optimum protection against
grass cuttings.
Guard ring for sawing applications
Fit guard ring (4) only when you use
circular saw blades.
Mounting the Thrust Plate and Guard
Washer
N 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.
Checking the Thrust Plate
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.
Cleaning Gearbox Mounting Hardware
for Cutting Attachment
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:
002BA490 KN
2
1
3
5
002BA491 KN
4
2
002BA407 KN
1
2
3
4
1
2
1
681BA196 KN
2
002BA407 KN
1
2
3
4