Yamaha YFM90RA Model Vehicle User Manual


 
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ELEC
ELECTRIC STARTING SYSTEM
EBS01050
TROUBLESHOOTING
Check:
1. main fuse
2. battery
3. starter motor
4. starter relay
5. main switch
6. rear brake switch
7. start switch
8. wiring connections
(of the entire starting system)
TIP
Before troubleshooting, remove the following
part(s):
1. seat
2. front fender
3. rear fender
4. C.D.I. magneto cover
Troubleshoot with the following special
tool(s).
EBS01043
YES
NO
EBS01044
YES
NO
EBS01051
YES
NO
The starter motor fails to turn.
Pocket tester
P/N. YU-03112-C, 90890-03112
1. Main fuse
Check the main fuse for continuity.
Refer to “CHECKING THE FUSE” in chap-
ter 3.
Is the main fuse OK?
Replace the fuse.
2. Battery
Check the condition of the battery.
Refer to “CHECKING AND CHARGING
THE BATTERY” in chapter 3.
Minimum open-circuit voltage
1.28 V or more at 20 °C (68 °F)
Is the battery OK?
Clean the battery
terminals.
Recharge or
replace the battery.
3. Starter motor
Connect the positive battery terminal
and starter motor lead with a jumper
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?
Repair or replace the
starter motor.
3
3
2
2
1
1
M
L/W
G/Y