Yamaha XT250X 2008, Service Manual, Page: 228 / 282

IGNITION SYSTEM
7-3
EAS27130
TROUBLESHOOTING
The ignition system fails to operate (no spark or intermittent spark).
NOTE:
Before troubleshooting, remove the following part(s):
1.Seat
2.Rear side cover
3.Tool box
4.Fuel tank
5.Carburetor assembly
6.Starter (choke) knob
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 spark plug.
Refer to
“CHECKING THE SPARK
PLUG” on page 3-8
.
NG
→
Re-gap or replace the spark plug.
OK
↓
4. Check the spark plug cap.
Refer to
“CHECKING THE SPARK
PLUG CAP” on page 7-42
.
NG
→
Replace the spark plug cap.
OK
↓
5. Check the ignition coil.
Refer to
“CHECKING THE IGNITION
COIL” on page 7-43
.
NG
→
Replace the ignition coil.
OK
↓
6. Check the pickup coil.
Refer to
“CHECKING THE PICKUP
COIL” on page 7-44
.
NG
→
Replace the pickup coil/stator assembly.
OK
↓
7. Check the stator coil.
Refer to .
NG
→
Replace the pickup coil/stator assembly.
OK
↓
8. Check the main switch.
Refer to
“CHECKING THE
SWITCHES” on page 7-33
.
NG
→
Replace the main switch.
OK
↓
9.
Check the engine stop switch.
Refer to
“CHECKING THE
SWITCHES” on page 7-33
.
NG
→
Poor conducting of engine stop switch.
Replace the right handlebar switch.
OK
↓
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