Yamaha YBR125ED Service Manual Page 317

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ELEC
CARBURETOR HEATING SYSTEM
EAS00823
YES
NO
4. Thermo switch
Remove the thermo switch from the wire
harness.
Connect the pocket tester (
×
1) to the
thermo switch
1
as shown.
Immerse the thermo switch in a container
filled with water
2
.
Place a thermometer
3
in the water.
Slowly heat the water, then let it cool down
to the specified temperature.
Check the thermo switch for continuity at
the temperatures indicated below.
È
The thermo switch circuit closed.
É
The thermo switch circuit open.
Test step Water temperature
Continu-
ity
1
Less than 16
±
3 °C
(60.8
±
5.4 °F)
YES
2
More than 16
±
3 °C
(60.8
±
5.4 °F)
NO
3
More than 11
±
3 °C
(51.8
±
5.4 °F)
NO
4
Less than 11
±
3 °C
(51.8
±
5.4 °F)
YES
Steps 1 & 2: Heating phase
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.
Does the thermo switch operate properly?
Replace the thermo
switch.
1
2
Ω × 1
3
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