Yamaha YP125R Service Manual

CHARGING SYSTEM
8-13
EAS27230
TROUBLESHOOTING
The battery is not being charged.
T
IP
• Before troubleshooting, remove the following part(s):
1. Storage box
2. Front cowling
NG →
OK ↓
NG →
OK ↓
NG →
OK ↓
NG →
OK ↓
NG →
OK ↓
1. Check the fuse.
(Main)
Refer to “CHECKING THE FUS-
ES” on page 8-77.
Replace the fuse.
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 stator coil.
Refer to “CHECKING THE STATOR
COIL” on page 8-85.
Replace the crankshaft position sen-
sor/stator assembly.
4. Check the rectifier/regulator.
Refer to “CHECKING THE RECTI-
FIER/REGULATOR” on page 8-85.
Replace the rectifier/regulator.
5. Check the entire charging system
wiring.
Refer to “CIRCUIT DIAGRAM” on
page 8-11.
Properly connect or repair the charging
system wiring.
The charging system circuit is OK.

Yamaha YP125R Specifications

General

Engine Type	Liquid-cooled, 4-stroke, SOHC, 4-valve
Bore x Stroke	52.4 mm x 57.9 mm
Fuel System	Fuel Injection
Ignition System	TCI
Transmission	V-Belt Automatic
Front Suspension	Telescopic fork
Rear Suspension	Unit Swing
Front Brake	Hydraulic single disc, Ø267 mm
Starter System	Electric
Rear Tyre	140/70-14M/C 62P (Tubeless)