Stihl MS 661 C-M User Manual

46 MS 661, MS 661 C-M
: Connect terminal (1) of short
circuit wire (2) with its crimped
side facing outwards.
: Push the short circuit wire (2)
fully into the guide (arrow).
– Reassemble in the reverse
sequence.
7.8.2 Testing Wiring Harness
with M-Tronic
– Test the wiring harness with the
STIHL MDG 1 using the
troubleshooting chart, b 8.3,
b 8.7
– See also Troubleshooting, b 3.5
7.8.3 Testing Ground Wire
A faulty ground wire may impair or
prevent operation of the short circuit
wire, M-Tronic or heating.
The ground wire is combined with
the short circuit wire in a wiring
harness. If damaged, the complete
wiring harness must be replaced
b 7.9, b 7.10.
– Check ground wire for contact
and continuity,
replace wiring harness if
necessary.
1166RA120 TG
2
1
7.9 Short Circuit Wire /
without M-Tronic
Removing and Installing
– Remove the shroud, b 6.4
– Remove the rewind starter,
b 9.2
– Remove the ignition module,
b 7.3
: Take out the screw (1) and pull
the ground wire (2) out of the
guide (arrow).
: Press out grommet (1) in
direction of cylinder and pull
wiring harness (2) out in direction
of cylinder.
– Remove the switch shaft,
b 11.1.1
– Remove the contact spring and
retainer, b 7.12
– Remove the tank housing,
b 13.11.4
1166RA121 TG
1
2
1166RA122 TG
1
2
– Pull the grommet off the wiring
harness.
: Pull the wires out of the guides
(arrows).
: Press lug (arrow) on grommet (1)
in direction of cylinder and push it
out sideways.
: Pull off the grommet (1), check
wiring harness and replace if
necessary.
Installing
: Position the grommet (3) so that
the contour (1) faces the
insulation (2).
1166RA123 TG1166RA124 TG
1
1166RA125 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