Stihl MS 240

111MS 240, MS 260, MS 260 C
System in order
Expose and separate connectors of
handlebar heating element,
b 11.6
Test handlebar heating
element
Resistance about 6.4Ω?
Test heater switch
(contact sleeve against switch housing)
Closed: about 0Ω?
Open: Circuit interrupted,
b 15.4
(On machines with carburetor heating,
reconnect pin and socket connector to
heating element),
b 15.1
no
no
Install new
handlebar,
b 11.6
Install new
heater switch,
b 15.4
yes
yes
Test ground wire between crankcase and
heater switch
Resistance between connector tags
and crankcase about 0 Ω ?
no
Install new
ground wire,
b 9.6.3
yes
1
2
3