Stihl MS 231

31MS 231, MS 231 C, MS 251, MS 251 C
5.6 Bar Mounting Stud
– Remove the chain sprocket
cover.
: Push stud puller
5910 893 0501 (1) over the collar
stud (2) as far as it will go and
unscrew the stud counter-
clockwise.
– Coat the collar stud with
threadlocking adhesive, fit and
tighten down firmly, b 14
– Reassemble all other parts in the
reverse sequence.
2310RA046 TG
1
2
Repair solution
If the thread in the engine housing is
badly damaged or stripped it will not
be possible to tighten the standard
collar stud to the specified torque –
the security of the collar stud is no
longer guaranteed.
In such a case use the collar stud in
the screw list as a repair solution,
b 2.5.
– Remove the standard collar stud
– do not re-drill the hole.
: Coat the thread of the collar
stud (1) with threadlocking
adhesive, b 14
– Fit the collar stud by hand so that
it engages the existing thread.
– Screw home the collar stud and
tighten it down firmly.
– Reassemble all other parts in the
reverse sequence.
2310RA047 TG
1
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