Yamaha MM600D Service Manual page 171

Check the lighting coil.
OK FAULTY
Check the fuel sender.
OK FAULTY
Check for voltage on the condenser coupler.
OK OUT OF SPECIFICATION
Check the condenser.
OK OUT OF SPECIFICATION
Check the fuel meter.
OK DOES NOT MOVE
Correct the connection for the fuel
meter system.
FUEL METER DOES NOT OPERATE.
Replace the CDI magneto.
Replace the fuel sender.
Correct the connection and/or replace the rectifier/
regulator.
Replace the condenser.
Replace the fuel meter.
8-14
SIGNAL SYSTEM
– +
ELEC