Stihl MS 661 C-M

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