Yamaha XT250X 2008, Service Manual

Page: 252 / 282

CARBURETOR HEATING SYSTEM
7-27
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
.
NG
→
Replace the fuse(s).
OK
↓
2. Check the battery.
Refer to
“CHECKING AND CHARG-
ING THE BATTERY” on page 7-37
.
NG
→ ●
Clean the battery terminals.
●
Recharge or replace the battery.
OK
↓
3. Check the main switch.
Refer to
“CHECKING THE
SWITCHES” on page 7-33
.
NG
→
Replace the main switch.
OK
↓
4. Check the thermo switch.
Refer to
“CHECKING THE THERMO
SWITCH” on page 7-46
.
NG
→
Replace the thermo switch.
OK
↓
5. Check the carburetor warmer.
Refer to
“CHECKING THE CARBURE-
TOR WARMER” on page 7-47
.
NG
→
Replace the carburetor warmer.
OK
↓
6. Check the entire carburetor heating
system’s wiring.
Refer to
“CIRCUIT DIAGRAM” on page
7-25
.
NG
→
Properly connect or repair the carburetor
heating system’s wiring.
OK
↓
This circuit is OK.
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