Troubleshooting - Yamaha YFM250RX 2008 Service Manual

EBS01050

TROUBLESHOOTING

The starter motor fails to turn.
Check:
1. fuse
2. battery
3. starter motor
4. starting circuit cut-off relay
5. starting circuit cut-off relay (diode)
6. starter relay
7. main switch
8. engine stop switch
9. neutral switch
10.clutch switch
11.start switch
12.wiring connections
(of the entire starting system)
NOTE: NOTE:
• Before troubleshooting, remove the following
part(s):
1. seat
2. front panel
3. front fender
4. rear fender
5. side cover
• Troubleshoot with the following special
tool(s).
Pocket tester
90890-03112, YU-03112-C
EBS01043
1. Fuse
• Check the fuse for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the fuse OK?
YES
ELECTRIC STARTING SYSTEM
NO
Replace the fuse.
7-15
EBS01044
2. Battery
• Check the condition of the battery.
Refer to "CHECKING AND CHARGING
THE BATTERY" in chapter 3.
Minimum open-circuit voltage
12.8 V or more at 20°C (68°F)
• Is the battery OK?
YES
EBS01051
3. Starter motor
• Connect the positive battery terminal
and starter motor lead
lead .
WARNING
• A wire that is used as a jumper lead
must have at least the same capacity or
more as that of the battery lead, other-
wise the jumper lead may burn.
• This check is likely to produce sparks,
therefore make sure nothing flammable
is in the vicinity.
• Does the starter motor turn?
YES
ELEC
NO
• Clean the battery
terminals.
• Recharge or replace
the battery.
with a jumper
NO
Repair or replace
the starter motor.