Stihl MS 661 C-M User Manual

93MS 661, MS 661 C-M
All models
: Attach throttle rod (1) to lever (2)
and push retainer (3) into the
tank housing until locking tabs
engage at both sides.
– On versions with M-Tronic, install
throttle trigger, b 11.2
: Attach the throttle rod (1) to the
trigger (2).
1166RA335 TG
3
1
2
1166RA328 TG
1
2
– On versions without M-Tronic,
install the choke rod, b 11.3.1
– Install the switch shaft and
handle molding, b 11.2
Check operation
– Squeeze trigger all the way, the
lever on the carburetor must then
be in the full throttle position. It
should not be possible to move it
any further in the open direction.
– Reassemble all other parts in the
reverse sequence.
11.3.1 Choke Rod
Models without M-Tronic
– Remove the filter base, b 13.3
: Pry the choke rod (1) out of the
switch shaft (arrow) and
disconnect it from lever on choke
shaft (2).
– Inspect the choke rod and
replace if necessary.
1166RA336 TG
1
2
Installing
: Attach choke rod (1) to lever (2)
on choke shaft so that its bent
end (arrow) faces the ignition
side.
: Place the choke rod (1) in its seat
(arrow), hold lever on switch
shaft (2) steady and push choke
rod (1) into its seat (arrow) – the
choke rod must be fully engaged.
Check operation
– Set switch shaft to cold start, the
choke shutter must be closed in
this position.
– Reassemble all other parts in the
reverse sequence.
1166RA337 TG
1
2
1166RA338 TG
1
2

Stihl MS 661 C-M Specifications

General

Idle speed	- RPM
Motor type	2-stroke motor
Chain pitch	3/8 \
Blade length	800 mm
Product color	Black, Grey, Orange
Automatic oiling	Yes
Engine displacement	91.1 cm³
Power source	Gasoline
Sound power level	118 dB
Vibration emission	6.9 m/s²
Sound pressure level	105 dB

Weight and Dimensions

Weight	7400 g