Yamaha YZF-R125 Service Manual: Introduction

WARNING

Disc brake components rarely require disassembly.

Therefore, always follow these preventive measures:

  • Never disassemble brake components unless absolutely necessary.
  • If any connection on the hydraulic brake system is disconnected, the entire brake system must be disassembled, drained, cleaned, properly filled, and bled after reassembly.
  • Never use solvents on internal brake components.
  • Use only clean or new brake fluid for cleaning brake components.
  • Brake fluid may damage painted surfaces and plastic parts. Therefore, always clean up any spilt brake fluid immediately.
  • Avoid brake fluid coming into contact with the eyes as it can cause serious injury.
  • FIRST AID FOR BRAKE FLUID ENTERING THE EYES:
  • Flush with water for 15 minutes and get immediate medical attention.
    Front brake
    ...

    Checking the front brake disc
    1. Remove: Front wheel Refer to "FRONT WHEEL" on page 4-6. 2. Check: Brake disc Damage/galling Replace. 3. Measure: Brake disc deflection Out of specification Correct the b ...

    Other materials:

    Installing the fuel hose
    1. Install: Fuel hose Fuel hose connector cover CAUTION:When installing the fuel hose, make sure that it is securely connected, and that the fuel hose connector cover is in the correct position, otherwise the fuel hose will not be properly installed. NOTE: W ...

    Checking the starter motor operation
    1. Check: Starter motor operation Does not operate → Perform the electric starting system troubleshooting, starting with step 4. Refer to "TROUBLESHOOTING" on page 8-9. a. Connect the positive battery terminal "1" and starter motor lead "2" with a jumper lead "3". W ...

    Installing the clutch
    1. Install: Conical spring washer "1" NOTE: Install the conical spring washer as shown in the illustration. 2. Install: Clutch housing Thrust washer "1" NOTE: Be sure to install the thrust washer so that its sharp edge "a" is facing away from the clutch boss. 3. Instal ...

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