Yamaha TT-R90 2005 Service Manual page 382

È
É
CARBURETOR HEATING SYSTEM
6 - 19
Ê The thermo switch circuit is open.
Ë The thermo switch circuit is closed.
Test step Water temperature Continuity
TT-R90:
Less than 23 ± 3 °C
(73.4 ± 5.4 °F)
1
TT-R90E:
Less than 16 ± 3 °C
(60.8 ± 5.4 °F)
TT-R90:
More than 23 ± 3 °C
(73.4 ± 5.4 °F)
2
TT-R90E:
More than 16 ± 3 °C
(60.8 ± 5.4 °F)
TT-R90:
More than 12 ± 4 °C
(53.6 ± 7.2 °F)
3
TT-R90E:
More than 11 ± 3 °C
(51.8 ± 5.4 °F)
TT-R90:
Less than 12 ± 4 °C
(53.6 ± 7.2 °F)
4
TT-R90E:
Less than 11 ± 3 °C
(51.8 ± 5.4 °F)
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.
– +
ELEC
YES
NO
NO
YES