Stihl MS 661 C-M User Manual

127MS 661, MS 661 C-M
System in order
Expose and separate connectors of
handlebar heating element,
b 10.5.1
Test handlebar heating element
Resistance about 6.4Ω?
Check the heater switch
(contact sleeve against switch housing)
Closed: about 0Ω?
Open: Circuit interrupted,
b 14.3
Reconnect connector to
thermostatic switch,
b 13.4
no
no
Replace
handlebar
b 10.5.1
Replace
heater switch
b 14.4
yes
yes
1
2
3

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