Yamaha YZF-R125 Service Manual: Troubleshooting

If the fuel pump fails to operate.

NOTE:

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

1. Rider seat

2. Fuel tank

Troubleshooting


    Circuit diagram
    4. Main fuse 5. Main switch 9. Battery 17.Engine stop switch 25.ECU (engine control unit) 30.Fuel pump 64.Ignition fuse ...

    Electrical components
    1. Main switch 2. Clutch switch 3. Front brake light switch 4. Ignition coil 5. Throttle body sensor assembly (intake air pressure sensor, intake air temperature sensor, throttle position se ...

    Other materials:

    Clutch lever
    Clutch lever Clutch lever The clutch lever is located at the left handlebar grip. To disengage the clutch, pull the lever toward the handlebar grip. To engage the clutch, release the lever. The lever should be pulled rapidly and released slowly for smooth clutch operation. Th ...

    Replacing the air filter element and cleaning the check hose
    The air filter element should be replaced at the intervals specified in the periodic maintenance and lubrication chart. Have a Yamaha dealer replace the air filter element more frequently if you are riding in unusually wet or dusty areas. In addition, the air filter check hose must be ...

    Indicator and warning lights
    Indicator and warning lights Neutral indicator light"" Turn signal indicator light"" High beam indicator light"" Engine trouble warning light"" Coolant temperature warning light"" Turn signal indicator light"" This indicator light flashes when the turn signal switch is pushed t ...

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