Troubleshooting - Yamaha RAPTOR YFM125RA Service Manual

EAS27131

TROUBLESHOOTING

The ignition system fails to operate (no spark or intermittent spark).
TIP
• Before troubleshooting, remove the following part(s):
1. Seat
2. Front panel
3. Front fender
4. Rear fender
5. Left side cover
1. Check the fuse.
Refer to "CHECKING THE FUSES"
on page 7-33.
OK↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 7-33.
OK↓
3. Check the spark plug.
Refer to "CHECKING THE SPARK
PLUG" on page 3-4.
OK↓
4. Check the ignition spark gap.
Refer to "CHECKING THE IGNI-
TION COIL" on page 7-38.
NG↓
5. Check the spark plug cap.
Refer to "CHECKING THE SPARK
PLUG CAP" on page 7-38.
OK↓
6. Check the ignition coil.
Refer to "CHECKING THE IGNI-
TION COIL" on page 7-38.
OK↓
7. Check the pickup coil.
Refer to "CHECKING THE PICKUP
COIL" on page 7-39.
OK↓
NG→
Replace the fuse.
NG→
• Clean the battery terminals.
• Recharge or replace the battery.
NG→
Re-gap or replace the spark plug.
OK→
Ignition system is OK.
NG→
Replace the spark plug cap.
NG→
Replace the ignition coil.
NG→
Replace the pickup coil/stator coil
assembly.
7-3
IGNITION SYSTEM