Yamaha YZF-R125 Service Manual: Poor braking performance

Yamaha YZF-R125 Service Manual / Troubleshooting / Poor braking performance

- Worn brake pad

- Worn brake disc

- Air in hydraulic brake system

- Leaking brake fluid

- Faulty brake caliper kit

- Faulty brake caliper seal

- Loose union bolt

- Damaged brake hose

- Oil or grease on the brake disc

- Oil or grease on the brake pad

- Incorrect brake fluid level

    Overheating
    Engine 1. Clogged coolant passages Cylinder head and piston Heavy carbon buildup 2. Engine oil Incorrect oil level Incorrect oil viscosity Inferior oil quality Cooling system 1. ...

    Faulty front fork legs
    Leaking oil - Bent, damaged or rusty inner tube - Cracked or damaged outer tube - Improperly installed oil seal - Damaged oil seal lip - Incorrect oil level (high) - Loose damper rod assembly bo ...

    Other materials:

    Checking the rear wheel
    1. Check: Rear wheel axle Rear wheel Wheel bearings Oil seals Refer to "CHECKING THE FRONT WHEEL" on page 4-8. 2. Check: Tire Rear wheel Damage/wear → Replace. Refer to "CHECKING THE TIRES" on page 3-23 and "CHECKING THE WHEELS" on page 3-25. 3. Measure: Radi ...

    Installing the radiator
    1. Fill: Cooling system (with the specified amount of the recommended coolant) Refer to "CHANGING THE COOLANT" on page 3-15. 2. Check: Cooling system Leaks Repair or replace any faulty part. 3. Measure: Radiator cap opening pressure Below the specified pressure Repla ...

    Owner's tool kit
    Owner's tool kit Owner's tool kit Engine oil drain attachment The owner's tool kit is located under the rider seat. The service information included in this manual and the tools provided in the owner's tool kit are intended to assist you in the performance of preventive maint ...

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