25MS 201, MS 201 C, MS 201 T, MS 201 TC
: Inspect the thrust pad (1), spur
gear (2), adjusting screw (3),
tensioner slide (4) and cover (5)
and replace if necessary.
– Clean all disassembled parts with
a little standard commercial
solvent-based degreasant
containing no chlorinated or
halogenated hydrocarbons.
Replace any damaged or worn
parts, b 14.
Always replace the adjusting screw
and spur gear as a matching pair.
– Check operation
– Lubricate the chain tensioner
with STIHL multipurpose grease,
b 14
– Reassemble in the reverse
sequence.
12
5 4
3
161RA054 TG
5.6.1 Chain Catcher
– Disengage the chain brake and
remove the chain sprocket cover,
bar and chain.
: Take out the screws (1).
: Remove the spiked bumper (2)
and chain catcher (3).
Installing
: Position the chain catcher (1) so
that it lines up with the contour of
the recess (arrows).
– Fit the spiked bumper.
– Fit the screws and tighten them
down firmly.
– Reassemble all other parts in the
reverse sequence.
7013RA036 TG
3
2
1
1
7013RA037 TG
1
5.7 Bar Mounting Stud
– Disengage the chain brake and
remove the chain sprocket cover,
bar and chain.
: Push stud puller
5910 893 0501 (1) over the collar
stud (2) as far as it will go and
unscrew the stud
counterclockwise.
– Coat the collar stud with Loctite,
fit and tighten down firmly, b 14
– Reassemble all other parts in the
reverse sequence.
5.8 Collar Nut for Sprocket
Cover
This sprocket cover can only be
used on the MS 201 and MS 201 T.
Retrofitting other models is not
possible.
The length and shape of the collar
stud must be matched to the
sprocket cover with captive nut.
Special tool 5910 893 9600 is
available for replacing the nut.
– Disengage the chain brake and
remove the sprocket cover.
7013RA038 TG
21
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