Stihl MS 311 Manual page 79

Low speed screw
1
: Take out the low speed screw
L (1).
1 2
3
– Inspect the sealing ring (1),
washer (2) and spring and
replace if necessary.
: Inspect the tip (arrow) for
damage or wear and replace the
low speed screw (L) if necessary.
– Screw down the low speed screw
(L) as far as stop.
– Continue with the high speed
screw (H).
78
High speed screw
The high speed screw( H) has a
limiter cap, which has to be
removed before the screw is
removed.
: Screw the puller (1)
5910 890 4500 counterclockwise
into the limiter cap – left-hand
thread.
2
1
: Rotate the limiter cap until the lug
(2) is in line with the slot (1).
1
: Pull out the limiter cap (1).
– Take out the high speed screw
(H).
: Inspect the tip (arrow) for
damage or wear and replace the
screw (H) if necessary.
– Screw down the high speed
screw (H) as far as stop.
– Continue with pre-installing
limiter cap.
1
MS 311, MS 391