Yamaha TT-R90(V) Owner's Service Manual page 380

È
É
CARBURETOR HEATING SYSTEM
6 - 18
EC624000
COUPLERS AND LEADS CONNECTION
INSPECTION
1. Check:
• Couplers and leads connection
Rust/dust/looseness/short-circuit →
Repair or replace.
THERMO SWITCH INSPECTION
1. Inspect:
• Thermo switch operation
Faulty operation → Replace.
Inspection steps:
• Remove the thermo switch.
• Connect the pocket tester to the thermo
switch coupler as shown.
Tester (+) lead → Black 1
Tester (–) lead → Black 2
• Immerse the thermo switch in a container
filled with water 3.
• Place a thermometer 4 in the water.
• Slowly heat the water, and then let it cool
to the specified temperature as indicated
in the table.
• Check the thermo switch for continuity at
the temperatures indicated in the table.
È TT-R90
É TT-R90E
– +
ELEC