Troubleshooting - Yamaha YFM250XL(C) Service Manual

EB804010

TROUBLESHOOTING

Procedure
Check:
1.Fuse (main)
2.Battery
3.Charging voltage
NOTE:
Remove the following part(s) before trou-
bleshooting:
1)Seat
Use the following special tool(s) for trou-
bleshooting.
EB802011
1.Fuse (main)
Refer to "SWITCH INSPECTION".
EB802012
2.Battery
Check the battery condition.
Refer to "BATTERY INSPECTION" in
CHAPTER 3.
Open-circuit voltage:
12.8 V or more at 20 ˚C (68 ˚F)
EB804011
3.Charging voltage
8
Connect the engine tachometer to the
spark plug lead.
Connect the pocket tester (DC 20V) to
the battery.
Tester (+) lead → Battery (+) terminal
Tester (–) lead → Battery (–) terminal
CHARGING SYSTEM
IF THE BATTERY IS NOT CHARGED:
CONTINUITY
CORRECT
8 - 22
4.Stator coil resistance
5.Wiring connections
(the entire charging system)
Inductive tachometer:
P/N. YU-8036-A
Engine tachometer:
P/N. 90890-03113
Pocket tester:
P/N. YU-03112, 90890-03112
NO CONTINUITY
Replace the fuse.
INCORRECT
Clean the battery terminals.
Recharge or replace the battery.
– +
ELEC