6 - 8
–+ELECCARBURETOR HEATING SYSTEM
ÅThe thermo switch circuit is open.
ıThe thermo switch circuit is closed.
Test step Water temperature Continuity
1Less than 23 ± 3 ˚C
(73.4 ± 5.4 ˚F)YES
2More than 23 ± 3 ˚C
(73.4 ± 5.4 ˚F)NO
3More than 12 ± 4 ˚C
(53.6 ± 7.2 ˚F)NO
4Less than 12 ± 4 ˚C
(53.6 ± 7.2 ˚F)YES
Test steps 1 & 2: Heating phase
Test steps 3 & 4: Cooling phase
WARNING
Handle the thermo switch with special
care.
Never subject the thermo switch to
strong shocks. If the thermo switch is
dropped, replace it.
Check the thermo switch operation.
CARBURETOR HEATER INSPECTION
1. Inspect:
Carburetor heater resistance
Out of specification → Replace.
Tester (+) probe →
Carburetor heater terminal 1
Tester (–) probe →
Carburetor heater body 2
Carburetor
heater resistanceTester selector
position
6 ~ 10 Ω at
20 ˚C (68 ˚F)Ω × 1
