Stihl MS 440 - Bar Mounting Studs

23MS 440, MS 440 C
: Pull out the spur gear.
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176RA055
: Pull out the tensioner slide with
adjusting screw and thrust pad.
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176RA056
: Inspect the teeth on the spur gear
and adjusting screw (1), and
replace both parts if necessary.
To do this, pull off the thrust
pad (2) and unwind the adjusting
screw from the tensioner
slide (3).
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176RA057
3
1
2
Always replace the adjusting screw
and spur gear as a matching pair.
Reassemble in the reverse
sequence.
– Before installing, lubricate teeth
on adjusting screw and spur gear
with grease – b 16.
: Check that the O-ring (arrow) is
fitted in the spur gear and
lubricate it with oil before
installing the spur gear.
VA
176RA058
– Remove chain sprocket cover
and cutting attachment – b 5.1
: Push stud puller (1)
5910 893 0501 over the collar
stud as far as it will go. Use a
15 mm (0.60 in) wrench to
unscrew the collar stud
VA
176RA117
1
counterclockwise.
– Before installing, coat thread of
collar stud with LOCTITE –
b 16.
– Fit the collar stud and tighten it
down firmly – b 3.5
5.6 Bar Mounting Studs