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:

    Checking the spark plug
    1. Remove: Right side cover Refer to "GENERAL CHASSIS" on page 4-1. 2. Disconnect: Spark plug cap 3. Remove: Spark plug CAUTION:Before removing the spark plug, blow away any dirt accumulated in the spark plug well with compressed air to prevent it from falling ...

    Checking the starter clutch
    1. Check: Starter clutch rollers "1" Starter clutch spring caps "2" Starter clutch springs "3" Damage/wear Replace the starter clutch assembly. 2. Check: Starter clutch idle gear Starter clutch gear Burrs/chips/roughness/wear Replace the defective part(s). 3. Check: ...

    Be a Responsible Owner
    As the vehicle's owner, you are responsible for the safe and proper operation of your motorcycle. Motorcycles are single-track vehicles. Their safe use and operation are dependent upon the use of proper riding techniques as well as the expertise of the operator. Every operator should ...

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