Yamaha YZF-R125 Service Manual: Troubleshooting

The battery is not being charged.

NOTE:

  • Before troubleshooting, remove the following part(s):

1. Rider seat

2. Left side panel

3. Left lower side cowling

Troubleshooting


    Circuit diagram
    1. AC magneto 3. Rectifier/regulator 4. Main fuse 9. Battery ...

    Lighting system
    ...

    Other materials:

    Engine tightening torques
    Cylinder head tightening sequence: Generator cover tightening sequence: Clutch cover tightening sequence: Crankcase tightening sequence: A. Left crankcase B. Right crankcase ...

    Checking the primary driven gear
    1. Check: Primary driven gear "1" Damage/wear Replace the primary drive gear and clutch housing as a set. Excessive noise during operation  Replace the primary drive gear and clutch housing as a set. ...

    Checking the crankshaft position sensor
    1. Disconnect: Crankshaft position sensor coupler (from the wire harness) 2. Check: Crankshaft position sensor resistance Out of specification  Replace the crankshaft position sensor/stator assembly. a. Connect the pocket tester ( × 100) to the crankshaft position sensor c ...

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