Carburetor Heating System - Yamaha TTR90 Fahrer- Und Wartungshandbuch

CARBURETOR HEATING SYSTEM

INSPECTION STEPS
Use the following steps for checking the possibility of the malfunctioning carburetor heating system.
Check entire carburetor
heating system for connec-
tion.
OK
Check thermo switch.
OK
Check carburetor heater.
OK
Check CDI magneto.
OK
Replace rectifier/regulator.
NOTE:
• Remove the following parts before inspection.
1) Seat
2) Fuel tank
• Use the following special tools in this inspection.
Pocket tester:
YU-3112-C/90890-03112
CARBURETOR HEATING SYSTEM
No good
No good
No good
Lighting coil
6 - 17
ELEC
Repair or replace.
No good
– +
Replace.
Replace.
Replace.