90
MS 661, MS 661 C-M
11.2
Throttle Trigger / Lockout
Lever
All models
:
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.
:
Disconnect the throttle rod (1)
from the throttle trigger (2).
1
1
1166RA321 TG
1166RA322 TG
1
2
:
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
:
Attach the torsion spring (1)
between lever (2) and throttle
trigger (3) – note installed
position (arrow).
1166RA323 TG
1
2
4
3
1166RA325 TG
1
2
3
:
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,
:
Drive home the pin (4) until it is
recessed by the same amount at
both sides.
Models without M-Tronic
:
Attach the torsion spring (1) to
the trigger (2)
– note the installed position
(arrow).
1166RA327 TG
4
3
1
2
1166RA324 TG
1
2
