Stihl MS 661 C-M User Manual

80 MS 661, MS 661 C-M
10. AV Elements
Vibration-damping springs and stop
buffers are used for the connection
between the handlebar, tank
housing and crankcase.
Damaged springs and stop buffers
must always be replaced.
10.1 Stop Buffer at Clutch
Side
– Remove the chain sprocket
cover.
: Pry out the stop buffer (1), check
it and replace if necessary.
Installing
– Use STIHL press fluid to make
installation easier, b 16
: Push the stop buffer (1), taper
first, into the bore until its groove
(arrow) engages the housing
rib (2).
1
1166RA045 TG
1
1166RA084 TG
2
– Reassemble all other parts in the
reverse sequence.
10.2 Antivibration Element on
Oil tank / Tank Housing
– Remove the stop buffer at the
clutch side, b 10.1
: Take out the screw (1).
: Take out the screw (1).
1166RA171 TG
1
1166RA172 TG
1
: Remove the screws (1) from the
underside of the machine, pry the
handlebar holder (2) out of the
handlebar (3) and lift it away.
: Unscrew spring (1) with bearing
plug (2) and pull off the annular
buffer (3).
– Inspect the spring with plug,
annular buffer and handlebar
holder, replace if necessary.
1166RA173 TG
1
3
1
2
1166RA174 TG
1
3
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