Stihl MS 650

18 MS 650, MS 660
Wear work gloves to protect your
hands from injury.
: Unscrew the hex nuts (1).
: Remove the chain sprocket
cover (2).
178RA001
2
1
VA
3
: Remove the bar (3) and chain.
: Disengage the chain brake by
pulling the hand guard towards
the front handle.
VA
143RA004
: Remove the E-clip (1).
: Remove the washer (2).
178RA003
VA
1
2
: Remove the rim sprocket (1).
178RA004
VA
1
: Remove the clutch drum (1) with
needle cage (2).
– Examine the needle cage for
signs of damage.
178RA005
VA
2
1
: Inspect the clutch drum (1) for
wear.
If there are signs of serious wear on
the inside diameter of the clutch
drum (1), check the remaining wall
thickness. If it is less than about
80% of the original thickness, fit a
VA
148RA101
80%
100%
1
!
new clutch drum.
If the clutch drum has to be
replaced, also check the brake band
– b 5.5.2.
5. Clutch, Chain Drive,
Chain Brake and
Chain Tensioner
5.1 Clutch Drum / Chain
Sprocket