Stihl MS 661 C-M User Manual

117MS 661, MS 661 C-M
: Hold the tank housing with
handlebar steady and push
impulse hose (1) onto stub
(arrow) as far as stop.
: Lift the tank housing with
handlebar and engage tank
housing's peg in stop buffer's
bore (arrow).
– Pull the manifold into the tank
housing, b 13.9
: Lift the tank housing (1) until
holes (arrow) in AV spring (2) line
up.
: Insert and tighten down the
screw (3) firmly.
1
1166RA417 TG
1166RA418 TG1166RA419 TG
2
1
3
: Fit bearing plug (1) in position.
: Coat the screw (2) with
threadlocking adhesive, fit it and
tighten it down firmly, b 16
– Install the stop buffer at the clutch
side, b 10.1
– Install the ignition module /
control unit, b 7.3
– Fit wiring harness at ignition side,
b 7.9, M-Tronic / heating,
b 7.10
– Install the carburetor, b 13.4
– Install the handle molding and
lockout lever, b 11.2
– Reassemble all other parts in the
reverse sequence.
1
2
1166RA189 TG

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