Stihl MS 661 C-M User Manual

59MS 661, MS 661 C-M
Machine runs trouble-free,
no further action necessary
no
Replace control unit,
b 7.2
yes
no
– Look for fault in fuel system or
carburetor.
– Check engine for leaks.
– Check position of flywheel on
crankshaft,
b 3.6, b 6.2
yes
Check operation
of switch shaft:
– Short circuit wire chafed?
– Function between contact spring and switch
shaft contact:
– Position "
F" = no connection
– Position "
0" = connection
– replace the wiring harness if necessary,
b 7.9
2
3
Ignition spark?
Engine
runs?

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