Yamaha YZF-R125 Service Manual: Checking the throttle body joint and air filter case joint

Yamaha YZF-R125 Service Manual / Periodic checks and adjustments / Engine / 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.

Checking the throttle body joint and air filter case joint


3. Install:

  • Right lower side cowling
  • Left lower side cowling Refer to "GENERAL CHASSIS" on page 4-1.
    Cleaning the air filter element
    NOTE: There is a check hose "1" at the bottom of the air filter case. If dust and/or water collects in this hose, clean the air filter element and air filter case. 1. Remove: Rider seat ...

    Checking the fuel line
    1. Remove: Left side panel Refer to "GENERAL CHASSIS" on page 4-1. 2. Lift the fuel tank. (Do not disconnect the fuel hose, drain hose 3. Check: Fuel hose "1" Cracks/damage → Replac ...

    Other materials:

    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 sensor) 6. FID (fast idle solenoid) 7. Rectifier/regulator 8. Lean angle sensor 9. Starting circui ...

    Checking the engine oil level
    1. Stand the vehicle on a level surface. NOTE: Place the vehicle on a suitable stand. Make sure the vehicle is upright. 2. Start the engine, warm it up for several minutes, and then turn it off. 3. Check: Engine oil level The engine oil level should be between the minimum level ...

    Checking the valve springs
    The following procedure applies to all of the valve springs. 1. Measure: Valve spring free length "a" Out of specification Replace the valve spring. 2. Measure: Compressed valve spring force "a" Out of specification Replace the valve spring. b. Installed length 3. ...

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