Troubleshooting - Yamaha 2009 YFM25RY Service Manual

EAS27510

TROUBLESHOOTING

The carburetor heating system fails to operate.
TIP
• Before troubleshooting, remove the following part(s):
1. Seat
2. Front panel
3. Front fender
4. Rear fender
5. 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 main switch.
Refer to "CHECKING THE
SWITCHES" on page 7-29.
OK↓
4. Check the thermo switch.
Refer to "CHECKING THE
THERMO SWITCH" on page 7-41.
OK↓
5. Check the carburetor warmer.
Refer to "CHECKING THE CAR-
BURETOR WARMER" on page 7-
42.
OK↓
6. Check the entire carburetor heating
system's wiring.
Refer to "CIRCUIT DIAGRAM" on
page 7-23.
OK↓
This circuit is OK.
CARBURETOR HEATING SYSTEM
NG→
Replace the fuse.
NG→
• Clean the battery terminals.
• Recharge or replace the battery.
NG→
Replace the main switch.
NG→
Replace the thermo switch.
NG→
Replace the carburetor warmer.
NG→
Properly connect or repair the carbu-
retor heating system's wiring.
7-25