Troubleshooting - Yamaha YJ50RAP Service Manual

EAS00757

TROUBLESHOOTING

The starter motor fails to turn.
Check:
1. main fuse
2. battery
3. starter motor
4. starter relay
5. main switch
6. engine stop switch
7. start switch
8. front brake light switch
9. rear brake light switch
10.wiring (of the entire starting system)
NOTE:
@
• Before troubleshooting, remove the following
part(s):
1) center cover
2) side cover (left)
3) side cover (right)
4) front panel
5) leg shield
• Troubleshoot with the following special
tool(s).
Pocket tester
YU-03112
EAS00738
1. Main fuse
• Check the main fuse for continuity.
Refer to "CHECKING THE FUSE" in chap-
ter 3.
• Is the main fuse OK?
YES
ELECTRIC STARTING SYSTEM
NO
Replace the main
fuse.
EAS00739
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?
EAS00758
3. Starter motor
• Connect the positive battery terminal 1
and starter motor lead 2 with a jumper
lead 3.
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?
7 - 14
ELEC
YES
• Clean the battery
terminals.
• Recharge or
replace the battery.
YES
Repair or
the starter motor.
– +
NO
NO
replace