Stihl MS 661 C-M User Manual

49MS 661, MS 661 C-M
: Close the cover (1) and lock it.
The lug (2) must engage the slot
(arrow) in the locking tab (3) – the
locking tab must fit snugly against
the insulated housing.
: Position grommet (1) so that the
slope (arrow) faces the cable
lug (2), then push it over the
wiring harness at the end with the
ring terminals.
1166RA143 TG
2
1
3
1166RA144 TG
12
: Position the grommet (3) so that
the contour (1) faces the wiring
harness insulating tube (2).
: Fit the wiring harness (2) through
the lateral opening (arrow) in the
grommet (3) so that the black
wire is at the bottom and the red
and yellow wires are in the order
shown.
Do not cross the wires.
: Pass the wiring harness (1), ring
terminals first, through the
opening from outside (cylinder
side) and into the carburetor box
: Place the grommet (2) in
position, locate its groove and
slide it in sideways until the lug
engages at the other side.
12
1166RA433 TG
3
1
1166RA434 TG
2
Lug (1) must be engaged.
: Push the short circuit wire (2) and
ground wire (3) into the guides
(arrows).
: Position cable lug (1) with its
crimped side facing outwards
and push the M-Tronic's red
wire (2) into the guides (arrows)
as shown
– loop (3) allows for movement.
1
2
3
1166RA435 TG1166RA149 TG
1
2
3

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