Control Levers; Switch Shaft; Removing And Installing - Stihl MS 661 Manual

11.

Control Levers

11.1

Switch Shaft

The positions of the switch shaft are
described in the instruction manual.

11.1.1 Removing and Installing

– Remove the air filter, b 13.1
– Remove the filter base, b 13.3
– Remove the handle molding and
disconnect throttle rod from
throttle trigger, b 11.3
Models without M-Tronic
– Remove the choke rod, b 11.3.1
1
: Pry switch shaft (1) out of pivot
mount (arrow) and pull it out of
the lateral pivot mount
– take care not to damage the
short circuit wire.
Models with M-Tronic
– Remove the throttle trigger,
b 11.2
88
: Lift locking tabs (arrows) and pull
out the retainer (1) part way, slip
lever (2) below the choke shaft's
lever at the same time.
1
: Pry switch shaft (1) out of pivot
mount (arrow) and pull it out of
the lateral pivot mount
– take care not to damage the
short circuit wire.
All models
2
: Pull the short circuit wire (1) out
of the guides (arrows) and push
the ring terminal (2) out
sideways.
– Inspect the switch shaft and
replace if necessary.
2
– Inspect the contact spring and
retainer, replace if necessary,
b 7.12
– Check the short circuit wire and
replace if necessary, b 7.9,
1
b 7.10
Installing
All models
Thread the short circuit wire (1)
through the opening (arrow).
2
1
1
: Push the ring terminal (1) onto
the pivot pin (2) so that its
crimped side is visible.
: Fit the short circuit wire (3) tightly
around the switch shaft (4) and
push it into or hook it onto the
guides (arrows) – the short circuit
wire (3) must be a snug fit on the
switch shaft (4).
1
4
3
MS 661, MS 661 C-M