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.
    Rear brake
    ...

    Checking the rear brake disc
    1. Remove: Rear wheel Refer to "REAR WHEEL" on page 4-12. 2. Check: Brake disc Damage/galling → Replace. 3. Measure: Brake disc deflection Out of specification → Correc ...

    Other materials:

    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 ...

    Checking the condition of the bulbs
    The following procedure applies to all of the bulbs. 1. Remove: Bulb WARNINGSince the headlight bulbs get extremely hot, keep flammable products and your hands away from them until they have cooled down. CAUTION: Be sure to hold the socket firmly when re ...

    Checking the clutch springs
    The following procedure applies to all of the clutch springs. 1. Check: Clutch spring Damage Replace the clutch springs as a set. 2. Measure: Clutch spring free length "a" Out of specification Replace the clutch springs as a set. ...

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