84 MS 440, MS 440 C
System in order
Pull connectors off
heater switch
Test front handle
heating element
Resistance about 7 Ω?
Check
heater switch
Closed: about 0 Ω ?
Open: Circuit interrupted
(On machines with carburetor heating,
refit connector pin of wire
from heating element in the
round plug)
no
no
Install new
front handle
Install new
heater switch
yes
yes
Test ground wire between tank housing
and crankcase
Resistance between switch housing
and crankcase about 0 Ω ?
no
Install new
ground wire
yes
1
2
3
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