Stihl MS 440 - Clutch, Chain Drive, Chain Brake and Chain Tensioner; Clutch Drum; Chain Sprocket

14 MS 440, MS 440 C
Wear work gloves to protect your
hands from injury.
: Unscrew the hex nuts (1) on the
chain sprocket cover (2) and
remove chain sprocket cover and
guide bar (3).
VA
138RA002
1
2
3
: Disengage the chain brake by
pulling the hand guard towards
the front handle.
VA
143RA004
: Remove the E-clip (1), washer (2)
and rim sprocket (3) if fitted.
VA
148RA061
3
21
: Remove the clutch drum (1) with
needle cage (2).
– Examine the needle cage for
signs of damage.
VA
148RA062
1
2
: Inspect the clutch drum (1).
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
new clutch drum.
VA
148RA101
80%
100%
1
!
If the clutch drum has to be
replaced, also check the brake
band – b 5.4.2
5. Clutch, Chain Drive,
Chain Brake
and Chain Tensioner
5.1 Clutch Drum /
Chain Sprocket