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Yamaha YP125R Service Manual

Yamaha YP125R
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ELECTRIC STARTING SYSTEM
8-9
EAS27190
TROUBLESHOOTING
The starter motor fails to turn.
T
IP
Before troubleshooting, remove the following part(s):
1. Storage box
2. Front cowling
3. Storage compartment
NG
OK
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OK
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OK
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OK
1. Check the fuses.
(Main, ignition, and signaling sys-
tem)
Refer to CHECKING THE FUS-
ES on page 8-77.
Replace the fuse(s).
2. Check the battery.
Refer to CHECKING AND
CHARGING THE BATTERY on
page 8-78.
Clean the battery terminals.
Recharge or replace the battery.
3. Check the starter motor operation.
Refer to CHECKING THE START-
ER MOTOR OPERATION on page
8-84.
Starter motor is OK. Perform the electric
starting system troubleshooting, starting
with step 5.
4. Check the starter motor.
Refer to CHECKING THE START-
ER MOTOR on page 5-46 and
CHECKING THE STARTER MO-
TOR on page 5-106.
Repair or replace the starter motor.
5. Check the starting circuit cut-off re-
lay.
Refer to CHECKING THE RE-
LAYS on page 8-80.
Replace the starting circuit cut-off relay.
6. Check the starter relay.
Refer to CHECKING THE RE-
LAYS on page 8-80.
Replace the starter relay.
7. Check the main switch.
Refer to CHECKING THE
SWITCHES on page 8-73.
Replace the main switch/immobilizer unit.

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Yamaha YP125R Specifications

General IconGeneral
Engine TypeLiquid-cooled, 4-stroke, SOHC, 4-valve
Bore x Stroke52.4 mm x 57.9 mm
Fuel SystemFuel Injection
Ignition SystemTCI
TransmissionV-Belt Automatic
Front SuspensionTelescopic fork
Rear SuspensionUnit Swing
Front BrakeHydraulic single disc, Ø267 mm
Starter SystemElectric
Rear Tyre140/70-14M/C 62P (Tubeless)

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