Stihl MS 461 - Carburetor Heating System Troubleshooting Chart

95MS 461, MS 461-R
13.2 Carburetor Heating System Troubleshooting Chart
Measure resistance of heating
element at
temperature = +20°C (68°F)
Replace thermostatic
element, b 13.1.3
no
Replace heating
element, b 13.1.2
Carburetor heating element
in order
yes
G = Generator
1 = Rear handle
2 = Handlebar
3 = Heater switch
4 = Thermostatic switch
5 = Heating element (carburetor)
6 = yellow wire
7 = red wire
3443RA470 TG
G
1 4
5
2
3
67
Resistance
about 8 Ω?
Circuit diagram of handle and carburetor heating system