Stihl MS 661 C-M User Manual

79MS 661, MS 661 C-M
Installing new rewind spring
– Lubricate the replacement spring
with frame with a few drops of
STIHL special lubricant before
installing, b 16
: Position the replacement spring
with frame in the fan housing and
push it into its seat (arrow) – the
anchor loop must be above the
lug (1).
– Remove the frame – keep it if
necessary.
The rewind spring must be properly
seated – if necessary, push it fully
into its seat and onto the lug.
Installing unwound rewind spring
If the rewind spring has popped out,
refit it in the fan housing as follows:
1
1166RA218 TG
: Fit the anchor loop in its
seat (arrow) in the frame.
: Fit the rewind spring (1)
counterclockwise in the frame,
holding the windings steady in
the process.
The procedure is otherwise the
same as that for installing a new
rewind spring.
– Reassemble all other parts in the
reverse sequence.
9.8 Segment
– Remove the rewind starter,
b 9.2
: Lift the segment (1) at the recess
(arrow) and tab (2) until the
pegs (3) are clear of the holes.
– Inspect the segment, replace if
necessary
1166RA443 TG
1
1
1166RA446 TG
2
3
3
Installing
: Engage the segment (1) in the
slots (arrows) in the fan housing
first and then swing it into
position.
: Press the pegs (1) of
segment (2) into the holes as far
as stop, making sure the tab (3)
engages over the rib and the
tabs (arrows) locate in their
seats.
– Reassemble all other parts in the
reverse sequence.
1166RA447 TG
1
1166RA448 TG
1 2 3
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