Yamaha YZF-R125 Service Manual: Checking and adjusting the steering head

Yamaha YZF-R125 Service Manual / Periodic checks and adjustments / Chassis / Checking and adjusting the steering head

1. Stand the vehicle on a level surface

WARNING

Securely support the vehicle so that there is no danger of it falling over.

NOTE:

Place the vehicle on a suitable stand so that the front wheel is elevated.

2. Check:

  • Steering head Grasp the bottom of the front fork legs and gently rock the front fork.

    Binding/looseness → Adjust the steering head.

3. Remove:

  • Upper bracket Refer to "STEERING HEAD" on page 4-52.

4. Adjust:

  • Steering head

a. Remove the lock washer "1", the upper ring nut "2", and the rubber washer "3".

Checking and adjusting the steering head


b. Tighten the lower ring nut "4" with a steering nut wrench "5".

NOTE:

Set the torque wrench at a right angle to the steering nut wrench.

Checking and adjusting the steering head




c. Loosen the lower ring nut "4" completely, and then tighten it to specification with a steering nut wrench.

WARNING

Do not overtighten the lower ring nut.


d. Check the steering head for looseness or binding by turning the front fork all the way in both directions. If any binding is felt, remove the lower bracket and check the upper and lower bearings.

Refer to "STEERING HEAD" on page 4-52.

e. Install the rubber washer "3".

f. Install the upper ring nut "2".

g. Finger tighten the upper ring nut "2", and then align the slots of both ring nuts. If necessary, hold the lower ring nut and tighten the upper ring nut until their slots are aligned.

NOTE:

Make sure the lock washer tabs "a" sit correctly in the ring nut slots "b".

Checking and adjusting the steering head


5. Install:

  • Upper bracket Refer to "STEERING HEAD" on page 4-52.
    Lubricating the drive chain
    The drive chain consists of many interacting parts. If the drive chain is not maintained properly, it will wear out quickly. Therefore, the drive chain should be serviced, especially when the vehi ...

    Checking the front fork
    1. Stand the vehicle on a level surface. WARNINGSecurely support the vehicle so that there is no danger of it falling over. 2. Check: Inner tube Damage/scratches Replace. ...

    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 ...

    Checking the rear brake hose
    1. Check: Brake hoses "1" Cracks/damage/wear  Replace. 2. Check: Brake hose holder "2" Loose connection Tighten the holder bolt. Loose or open holder Fasten properly. 3. Hold the vehicle upright and apply the rear brake several times. 4. Check: Brake ho ...

    Identification numbers
    Record the key identification number, vehicle identification number and model label information in the spaces provided below for assistance when ordering spare parts from a Yamaha dealer or for reference in case the vehicle is stolen. KEY IDENTIFICATION NUMBER: VEHICLE IDENTIFICATION ...

    2019 Copyright www.yam-r125.net |