Stihl MS 661 C-M User Manual

69MS 661, MS 661 C-M
8.7 M-Tronic Troubleshooting Chart
8.7.1 Circuit Diagram
1 Stop switch
2 Choke switch
3 Diagnostic socket
4 Switch unit (choke module)
5 Solenoid valve (in carburetor)
6 Spark plug
7 Ignition lead
8 Control unit
1166RA427 TG
5
4
3
2
1
A
B
7
6
8

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