Troubleshooting - Yamaha XT250X Service Manual

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
Check the fuse.
1.
Refer to
"CHECKING THE FUSE" on
.
page 7-37
OK↓
Check the battery.
2.
Refer to
"CHECKING AND CHARG-
ING THE BATTERY" on page 7-37
OK↓
Check the spark plug.
3.
Refer to
"CHECKING THE SPARK
.
PLUG" on page 3-8
OK↓
4. Check the spark plug cap.
Refer to
"CHECKING THE SPARK
PLUG CAP" on page 7-42
OK↓
5. Check the ignition coil.
Refer to
"CHECKING THE IGNITION
.
COIL" on page 7-43
OK↓
6. Check the pickup coil.
Refer to
"CHECKING THE PICKUP
.
COIL" on page 7-44
OK↓
7. Check the stator coil.
Refer to .
OK↓
8. Check the main switch.
Refer to
"CHECKING THE
SWITCHES" on page 7-33
OK↓
Check the engine stop switch.
9.
Refer to
"CHECKING THE
SWITCHES" on page 7-33
OK↓
NG→
NG→
.
NG→
NG→
.
NG→
NG→
NG→
NG→
.
NG→
.
7-3
IGNITION SYSTEM
Replace the fuse(s).
Clean the battery terminals.
G
Recharge or replace the battery.
G
Re-gap or replace the spark plug.
Replace the spark plug cap.
Replace the ignition coil.
Replace the pickup coil/stator assembly.
Replace the pickup coil/stator assembly.
Replace the main switch.
Poor conducting of engine stop switch.
Replace the right handlebar switch.