Yamaha YZF-R1S, Service Manual

Page: 409 / 457

8-16
YES NO
3. Starter motor
S
Connect the positive battery terminal and
starter motor lead with a jumper lead .
Repair or replace the
starter motor.
S
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.
S
This check is likely to produce sparks,
therefore make sure nothing flammable
is in the vicinity.
S
Does the starter motor turn?
WARNING
1
2 3
EAS00758
YES NO
2. Battery
S
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)
S
Is the battery OK?
S
Clean the battery
terminals.
S
Recharge or re-
place the battery.
EAS00739
ELECTRIC STARTING SYSTEM
ELEC
NOTE:
YES NO
1. Main and ignition fuses
S
Check the main and ignition fuses for conti-
nuity.
Refer to “CHECKING THE FUSES” in chap-
ter 3.
S
Are the main and ignition fuses OK?
Replace the fuse(s).
EAS00757
TROUBLESHOOTING
The starter motor fails to turn.
Check:
1. main and ignition fuses
2. battery
3. starter motor
4. starting circuit cut-off relay
5. starter relay
6. main switch
7. engine stop switch
8. neutral switch
9. sidestand switch
10. clutch switch
11. start switch
12. wiring connections
(of the entire starting system)
S
Before troubleshooting, remove the following
part(s):
1. seat
2. fuel tank
3. side cowlings
4. throttle body assembly
S
Troubleshoot with the following special tool(s).
Pocket tester
90890-03112, YU-3112
EAS00738