Throttle Trigger; Lockout Lever - Stihl MS 661 Manual

11.2 Throttle Trigger / Lockout
Lever
All models
1
: Use STIHL combination wrench
to ease the lugs (1) on the
underside apart and push them
through the rear hand guard.
– Remove the handle molding and
pull the lockout lever out of the
pivot mounts – the lockout lever
may pop out.
1
: Disconnect the throttle rod (1)
from the throttle trigger (2).
90
4
1
1
: Use a punch (2) to drive out the
pin (1) and remove the throttle
trigger (3) with torsion spring (4).
– Inspect the lockout lever, throttle
trigger and torsion spring,
replace as necessary.
Installing
Models with M-Tronic
1
2
2
: Attach the torsion spring (1)
between lever (2) and throttle
trigger (3) – note installed
position (arrow).
2
3
2 4
: Fit the throttle trigger (1) in the
rear handle so that lever (2)
engages over the switch lever's
cam and the tongue (arrow) is
within the rear handle – the holes
must be in alignment.
: Use a punch (3) to center the

throttle trigger (1).

On versions with heating, make
sure the connecting wires are
properly seated in the guide and do
not protrude
– risk of pinching the wires, b 14.8.
: Drive home the pin (4) until it is
recessed by the same amount at
both sides.
Models without M-Tronic
3
: Attach the torsion spring (1) to
the trigger (2)
– note the installed position
(arrow).
1
3
1
2
MS 661, MS 661 C-M