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Yamaha YP125R Service Manual

Yamaha YP125R
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LIGHTING SYSTEM
8-17
EAS27260
TROUBLESHOOTING
Any of the following fail to light: headlight, high beam indicator light, taillights, license plate light, auxiliary
lights or meter light.
T
IP
Before troubleshooting, remove the following part(s):
1. Front cowling
NG
OK
NG
OK
NG
OK
NG
OK
NG
OK
NG
OK
NG
OK
1. Check the condition of each bulb
and bulb socket.
Refer to CHECKING THE BULBS
AND BULB SOCKETS on page
8-76.
Replace the bulb(s) and bulb socket(s).
2. Check the fuses.
(Main, headlight, ignition, ECU, turn
signal/hazard, and signaling sys-
tem)
Refer to CHECKING THE FUS-
ES on page 8-77.
Replace the fuse(s).
3. Check the battery.
Refer to CHECKING AND
CHARGING THE BATTERY on
page 8-78.
Clean the battery terminals.
Recharge or replace the battery.
4. Check the main switch.
Refer to CHECKING THE
SWITCHES on page 8-73.
Replace the main switch/immobilizer unit.
5. Check the dimmer switch.
Refer to CHECKING THE
SWITCHES on page 8-73.
The dimmer switch is faulty. Replace the
left handlebar switch.
6. Check the pass switch.
Refer to CHECKING THE
SWITCHES on page 8-73.
The pass switch is faulty. Replace the left
handlebar switch.
7. Check the headlight relay.
Refer to CHECKING THE RE-
LAYS on page 8-80.
Replace the headlight relay.

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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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