Stihl MS 661 C-M User Manual

122 MS 661, MS 661 C-M
14.4 Heater Switch
– Remove the filter base, b 13.3
– Push out the grommet and
remove the carburetor, b 13.4
: Disconnect ground wire flag
terminal (1).
: Take off the cable retainer (2)
and pull connector of wire (3) out
of the heater switch (4).
: Remove the nut (1) and
washer (2).
: Push heater switch (3) with
multiple tab inwards and out.
1166RA374 TG
2
3
1
4
1166RA375 TG
123
: Remove the multiple tab (1) from
the heater switch (2), inspect
components and replace if
necessary.
– Check the ground wire, replace if
necessary
Installing
: Slide the multiple tab (1) onto the
heater switch (2) so that the
nib (3) engages the slot.
: To ensure the switch position is
correct, slide the heater
switch (1) with multiple tab (2)
into the tank housing bore so that
the nib (3) engages the recess
(arrow).
1166RA376 TG
2 1
1166RA377 TG
2 1
3
1166RA378 TG
1
2
3
: Fit the washer (1), screw on the
nut (2) and tighten it down firmly.
: Connect the flag terminal (1) of
ground wire (2) to multiple tab (3)
– crimped side facing manifold.
: Push the ground wire (2) into the
guides (arrows) – loop (4) allows
for movement.
– Check operation
– Install carburetor and press
grommet into openings, b 13.4
– Reassemble all other parts in the
reverse sequence.
1166RA379 TG
21
1166RA380 TG
3
4
2
1

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