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 piston rings
    1. Measure: Piston ring side clearance Out of specification Replace the piston and piston rings as a set. NOTE: Before measuring the piston ring side clearance, eliminate any carbon deposits from the piston ring grooves and piston rings. 2. Install: Piston ring (into the cylind ...

    Preparation for removal and disassembly
    1. Before removal and disassembly, remove all dirt, mud, dust and foreign material. 2. Use only the proper tools and cleaning equipment. Refer to "SPECIAL TOOLS" on page 1-8. 3. When disassembling, always keep mated parts together. This includes gears, cylinders, pistons and other part ...

    Measuring the compression pressure
    NOTE: Insufficient compression pressure will result in a loss of performance. 1. Measure: Valve clearance Out of specification →Adjust. Refer to "ADJUSTING THE VALVE CLEARANCE" on page 3-3. 2. Start the engine, warm it up for several minutes, and then turn it off. 3. Remove: ...

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