Troubleshooting - Yamaha XT250X Service Manual

EAS27510

TROUBLESHOOTING

The carburetor warmer system fails to operate.
NOTE:
Before troubleshooting, remove the following part(s):
1.Seat
2.Rear side cover
3.Tool box
4.Fuel tank
5.Carburetor assembly
6.Rectifier/regulator
1. Check the fuse.
Refer to
"CHECKING THE FUSE" on
.
page 7-37
OK↓
2. Check the battery.
Refer to
"CHECKING AND CHARG-
ING THE BATTERY" on page 7-37
OK↓
3. Check the main switch.
Refer to
"CHECKING THE
SWITCHES" on page 7-33
OK↓
4. Check the thermo switch.
Refer to
"CHECKING THE THERMO
SWITCH" on page 7-46
OK↓
5. Check the carburetor warmer.
Refer to
"CHECKING THE CARBURE-
TOR WARMER" on page 7-47
OK↓
6. Check the entire carburetor heating
system's wiring.
Refer to
"CIRCUIT DIAGRAM" on page
.
7-25
OK↓
This circuit is OK.
CARBURETOR HEATING SYSTEM
NG→
NG→
.
NG→
.
NG→
.
NG→
.
NG→
7-27
Replace the fuse(s).
Clean the battery terminals.
G
Recharge or replace the battery.
G
Replace the main switch.
Replace the thermo switch.
Replace the carburetor warmer.
Properly connect or repair the carburetor
heating system's wiring.