battery YAMAHA YZ250LC 2003 Owners Manual

6-7
SOLENOID VALVE SYSTEMELEC
Check solenoid
valve operation.
Solenoid valve
coil
No good
No good
Check each couplers and
wire connection.
Check solenoid valve.
Repair or replace.
Replace.
Replace.
OK
OK
OKSource coil
No goodReplace.* Check CDI magneto.
Replace CDI unit.
No good
EC650001
SOLENOID VALVE SYSTEM
EC651032
INSPECTION STEPS
If the solenoid valve will not operate, use the following inspection steps.
* marked: Refer to "IGNITION SYSTEM" section.
NOTE:
9Remove the following parts before inspection.
1) Seat
2) Fuel tank
9Use l2V battery in this inspection.
9Use the following special tools in this inspection.
Pocket tester:
YU-3112-C/90890-03112
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6-8
SOLENOID VALVE SYSTEMELEC
EC624000
COUPLERS AND LEADS CONNECTION
INSPECTION
1. Check:
9Couplers and leads connection
Rust/ Dust/ Looseness/Short-circuit 
Repair or replace.
EC652040
SOLENOID VALVE OPERATION
1. Disconnect the solenoid valve coupler.
2. Connect 12V battery to the solenoid valve
coupler.
3. Inspectt:
9Solenoid valve
1
No click when connecting the battery 
Replace.
EC653002
SOLENOID VALVE COIL INSPECTION
1. Inspect:
9Solenoid valve coil resistance
Out of specification Replace.
R
1
2
12R
R
1
2
12R
Tester (+) leadRed lead 1
Tester (–) lead
Red lead 2
22.8~27.8Ωat
20°C (68°F) Solenoid
resistance
Tester selector
position
Ω× 10
Battery (+) leadRed lead 1
Battery (–) lead
Red lead 2
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