Yamaha WR250F 2021 - Troubleshooting

ELECTRIC STARTING SYSTEM
8-9
EAM30281
TROUBLESHOOTING
The starter motor fails to turn.
TIP
Before troubleshooting, remove the following part(s):
1. Seat
2. Side cover (left/right)
3. Air scoop (left/right)
4. Fuel tank
5. Air filter case cover
1. Check the fuse.
Refer to “CHECKING THE FUSES”
on page 8-59.
NG
Replace the fuse(s).
OK
2. Check the battery.
Refer to “CHECKING AND
CHARGING THE BATTERY” on
page 8-60.
NG
• Clean the battery terminals.
• Recharge or replace the battery.
OK
3. Check the main relay.
Refer to “CHECKING THE RE-
LAYS” on page 8-62.
NG
Replace the main relay.
OK
4. Check the starter motor operation.
Refer to “CHECKING THE START-
ER MOTOR OPERATION” on page
8-67.
OK
Starter motor is OK. Perform the electric
starting system troubleshooting, starting
with step (6).
NG
5. Check the starter motor.
Refer to “CHECKING THE START-
ER MOTOR” on page 5-46.
NG
Repair or replace the starter motor.
OK
6. Check the diodes.
(Diode 1 through 5)
Refer to “CHECKING THE RELAY
UNIT (DIODE)” on page 8-64.
NG
Replace the diodes.
OK
7. Check the starter relay.
Refer to “CHECKING THE RE-
LAYS” on page 8-62.
NG
Replace the starter relay.
OK
8. Check the engine stop switch.
Refer to “CHECKING THE
SWITCHES” on page 8-57.
NG
Replace the engine stop switch.
OK