Yamaha YB50 Service Manual page 139

4. Starter relay
• Disconnect the starter relay cable from the
installation.
• Connect the battery to the starter relay
cables as shown using the bridge cables
.
• Check the operation of the starter motor.
5. Main switch
• Disconnect the coupler of the main switch
from the installation.
• Check the switch component to see if
there is continuity between "Red
Brown ".
6. Starter switch
• Disconnect the coupler of the handlebar
switch (right) from the installation.
• Check the starter switch component to see
if there is continuity between "Blue/White
and Black "
7. Connections
• Check the connections throughout the igni-
tion system.
See the "ELECTRICAL DIAGRAM"
IGNITION AND STARTER SYSTEM
DOES MOVE
and
CORRECT
CORRECT
INCORRECT
The main switch is defective, change.
DOESN'T MOVE
The starter relay is defective, change
INCORRECT
The starter switch is defective, change the
handlebar switch (right).
BAD CONNECTION
7-9
ELEC
Correct