Troubleshooting - Yamaha YFM70RY Service Manual

EAS27190

TROUBLESHOOTING

The starter motor fails to turn.
TIP
• Before troubleshooting, remove the following part(s):
1. Seat
2. Fuel tank top panel
3. Front fender
1. Check the fuses.
(Main and ignition)
Refer to "CHECKING THE FUS-
ES" on page 8-61.
OK ↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-62.
OK ↓
3. Check the starter motor.
Refer to "CHECKING THE START-
ER MOTOR" on page 5-38.
OK ↓
4. Check the starting circuit cut-off re-
lay.
Refer to "CHECKING THE RE-
LAYS" on page 8-65.
OK ↓
5. Check the diode.
Refer to "CHECKING THE DI-
ODES" on page 8-66.
OK ↓
6. Check the starter relay.
Refer to "CHECKING THE RE-
LAYS" on page 8-65.
OK ↓
7. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-57.
OK ↓
8. Check the engine stop switch.
Refer to "CHECKING THE
SWITCHES" on page 8-57.
OK ↓
ELECTRIC STARTING SYSTEM
NG →
Replace the fuse(s).
NG →
• Clean the battery terminals.
• Recharge or replace the battery.
NG →
Repair or replace the starter motor.
NG →
Replace the relay unit.
NG →
Replace the relay unit.
NG →
Replace the starter relay.
NG →
Replace the main switch.
NG →
Replace the right handlebar switch.
8-9