Yamaha YZF-R125 Service Manual: Checking the rear wheel

Yamaha YZF-R125 Service Manual / Chassis / Rear wheel / 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:

  • Radial wheel runout
  • Lateral wheel runout Refer to "CHECKING THE FRONT WHEEL" on page 4-8.

Checking the rear brake caliper bracket

1. Check:

  • Rear brake caliper bracket Cracks/damage → Replace.

Checking the rear wheel drive hub

1. Check:

  • Rear wheel drive hub Cracks/damage → Replace.
  • Rear wheel drive hub dampers Damage/wear → Replace.
    Removing the rear wheel (disc)
    1. Stand the vehicle on a level surface. WARNINGSecurely support the vehicle so that there is no danger of it falling over. 2. Elevate: Rear wheel NOTE: Place the vehicle ...

    Checking and replacing the rear wheel sprocket
    1. Check: Rear wheel sprocket More than 1/4 tooth "a" wear Replace the rear wheel sprocket. Bent teeth Replace the rear wheel sprocket. b. Correct 1. Drive chain roller 2. ...

    Other materials:

    Checking the water pump
    1. Check: Water pump housing cover Water pump housing Cracks/damage Replace. Impeller shaft Cracks/damage/wear Replace. Bearing Rough movement Replace. Radiator outlet hose Cracks/damage Replace. ...

    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. Coolant Low coolant level 2. Radiator Damaged or leaking radiator Faulty radiator cap ...

    Checking the radiator
    1. Check: Radiator fins obstruction clean. Apply compressed air to the rear of the radiator. Damage  repair or replace. NOTE: Straighten any flattened fins with a thin, flat-head screwdriver. 2. Check: Radiator hoses Cracks/damage Replace. 3. Measure: Radiator cap ...

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