Yamaha YZF-R125 Service Manual: Checking the brake fluid level

1. Stand the vehicle on a level surface.

NOTE:

  • Place the vehicle on a suitable stand.
  • Make sure the vehicle is upright.

2. Check:

Brake fluid level Below the minimum level mark "a" → Add the recommended brake fluid to the proper level.


Checking the brake fluid level


A. Front brake

B. Rear brake

WARNING
  • Use only the designated brake fluid. Other brake fluids may cause the rubber seals to deteriorate, causing leakage and poor brake performance.
  • Refill with the same type of brake fluid that is already in the system. Mixing brake fluids may result in a harmful chemical reaction, leading to poor brake performance.
  • When refilling, be careful that water does not enter the brake fluid reservoir. Water will significantly lower the boiling point of the brake fluid and could cause vapor lock.
CAUTION:

Brake fluid may damage painted surfaces and plastic parts. Therefore, always clean up any spilt brake fluid immediately.

NOTE:

In order to ensure a correct reading of the brake fluid level, make sure the top of the brake fluid reservoir is horizontal.

    Adjusting the rear disc brake
    1. Check: Brake pedal position (distance "a" from the center of the rider footrest to the center of the brake pedal) Out of specification Adjust. 2. Adjust: Brake pedal position ...

    Checking the front brake pads
    The following procedure applies to all of the brake pads. 1. Operate the brake. 2. Check: Front brake pad Wear indicator grooves "a" have almost disappeared Replace the brake pads as a ...

    Other materials:

    Checking the horn
    1. Check: Horn resistance Out of specification Replace. a. Disconnect the horn connectors from the horn terminals. b. Connect the pocket tester ( × 1) to the horn terminals. Positive tester probe horn terminal "1" Negative tester probe horn terminal "2" c. Measure t ...

    Assembling the water pump
    1. Install: Water pump seal "1" (into the water pump housing "2") CAUTION:Never lubricate the water pump seal surface with oil or grease. NOTE: Install the water pump seal with the special tools. Install the water pump seal with the special tools to the specifi ...

    Faulty clutch
    Clutch slips 1. Clutch Improperly assembled clutch Improperly adjusted clutch cable Loose or fatigued clutch spring Worn friction plate Worn clutch plate 2. Engine oil Incorrect oil level Incorrect oil viscosity (low) Deteriorated oil Clutch drags 1. Clutch Unevenly t ...

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