Yamaha 2004 Rhino 660 YXR660FAS Service Manual page 410

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4. Thermo switch 2
• Remove the thermo switch 2 from the wire
harness.
• Connect the pocket tester (Ω × 1) to the
thermo switch 2 1.
• Immerse the thermo switch 2 in a con-
tainer filled with water 2.
• Place a thermometer 3 in the water.
• Slowly heat the water, than let it cool to the
specified temperature as indicated in the
table.
• Check the thermo switch 2 for continuity at
the temperatures indicated in the table.
È The thermo switch 2 circuit is closed.
É The thermo switch 2 circuit is open.
Test step Water temperature Continuity
Less than 16 ± 3 °C
1
(60.8 ± 37.4 °C)
More than 16 ± 3 °C
2
(60.8 ± 37.4 °C)
More than 11 ± 3 °C
3
(51.8 ± 37.4 °C)
Less than 11 ± 3 °C
4
(51.8 ± 37.4 °C)
Test steps 1 & 2: Heating phase
Test steps 3 & 4: Cooling phase
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CARBURETOR HEATING SYSTEM
Yes
No
No
Yes
GOOD
CONDITION
9 - 58
3
1
11
51.8
BAD CONDITION
Replace the thermo switch 2.
– +
ELEC
Ω × 1
2