Stihl MS 661 C-M User Manual

129MS 661, MS 661 C-M
Circuit Diagram
Component Ohmmeter connection
(use either test lead)
Resistance Ω If faulty
Lead 1 Lead 2 Spec. Actual Cause Remedy
Generator Connector
on
generator
wire
Ground 0.6 0.5 - 1 Generator OK
- Break in wire,
generator damaged
Install new
generator
0 Short circuit –
damaged insulation
repair insulation
G = Generator
1 = Rear handle
2 = Handlebar
3 = Heater switch
4 = Thermostatic switch
5 = Heating element (carburetor)
0001RA505 TG
G
1 4
5
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