Yamaha YZF-R125 Service Manual: Troubleshooting

Any of the following fail to light: headlight, high beam indicator light, taillight, license plate light, auxiliary light or meter light.

NOTE:

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

1. Seats

2. Fuel tank

Troubleshooting


Troubleshooting


    Circuit diagram
    4. Main fuse 5. Main switch 9. Battery 25.ECU (engine control unit) 36.License plate light 37.Tail/brake light 44.Headlight relay 46.Pass switch 47.Dimmer switch 51.Headlight (low beam) ...

    Signaling system
    ...

    Other materials:

    Checking the throttle body joint and air filter case joint
    1. Remove: Right lower side cowling Left lower side cowling Refer to "GENERAL CHASSIS" on page 4-1. 2. Check: Throttle body joint "1" Air filter case joint "2" Cracks/damage Replace. 3. Install: Right lower side cowling Left lower side cowling Refer to "GENERAL CHAS ...

    Checking the front fork
    The condition and operation of the front fork must be checked as follows at the intervals specified in the periodic maintenance and lubrication chart. To check the condition Check the inner tubes for scratches, damage and excessive oil leakage. To check the operation Place the vehicle ...

    Changing the coolant
    1. Remove: Lower side cowlings Refer to "GENERAL CHASSIS" on page 4-1. 2. Remove: Radiator cap "1" WARNINGA hot radiator is under pressure. Therefore, do not remove the radiator cap when the engine is hot. Scalding hot fluid and steam may be blown out, which c ...

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