Stihl MS 650

27MS 650, MS 660
– Remove the inner side plate –
b 5.5.2
: Rotate the spur gear clockwise
until tensioner slide (1) butts
against the thrust pad (2).
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1
2
: Pull out the retainer (1).
: Take out the screw (2).
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1
2
: Remove the cover plate.
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: Pull out the spur gear.
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: Take out the tensioner slide with
adjusting screw and thrust pad.
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: Inspect the teeth on the spur gear
and adjusting screw (1), replace
both parts if necessary. To do
this, pull off the thrust pad (2) and
unscrew the tensioner slide (3).
Install in the reverse sequence.
VA
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3
1
2
Always replace the adjusting screw
and spur gear as a matching pair.
Coat teeth of adjusting screw and
spur gear with grease, b 17,
before installing.
: When reassembling, check that
O-ring (arrow) is fitted in spur
gear and coat it with oil before
fitting the spur gear.
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5.6 Chain Tensioner