Yamaha YZF-R125 Service Manual: Checking the tires

The following procedure applies to both of the tires.

1. Check:

Tire pressure Out of specification Regulate.


Checking the tires


WARNING
  • The tire pressure should only be checked and regulated when the tire temperature equals the ambient air temperature.
  • The tire pressure must be adjusted according to the total weight (including cargo, rider, passenger and accessories) and the anticipated riding speed.
  • Operation of an overloaded vehicle could cause tire damage, an accident or an injury.

    NEVER OVERLOAD THE VEHICLE.


WARNING

It is dangerous to ride with a worn-out tire.

When the tire tread reaches the wear limit, replace the tire immediately.

2. Check:

Tire surfaces Damage/wear Replace the tire.


Checking the tires


1. Tire tread depth

2. Side wall

3. Wear indicator


WARNING
  • Do not use a tubeless tire on a wheel designed only for tube tires to avoid tire failure and personal injury from sudden deflation.
  • When using a tube tire, be sure to install the correct tube.
  • Always replace a new tube tire and a new tube as a set.
  • To avoid pinching the tube, make sure the wheel rim band and tube are centered in the wheel groove.
  • Patching a punctured tube is not recommended.

    If it is absolutely necessary to do so, use great care and replace the tube as soon as possible with a good quality replacement.

Checking the tires


A. Tire

B. Wheel


WARNING

After extensive tests, the tires listed below have been approved by MBK Industrie for this model. The front and rear tires should always be by the same manufacturer and of the same design. No guarantee concerning handling characteristics can be given if a tire combination other than one approved by MBK Industrie is used on this vehicle.


WARNING

New tires have a relatively low grip on the road surface until they have been slightly worn. Therefore, approximately 100 km should be traveled at normal speed before any high-speed riding is done.

NOTE:

For tires with a direction of rotation mark "1":

  • Install the tire with the mark pointing in the direction of wheel rotation.
  • Align the mark "2" with the valve installation point.

Checking the tires


    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. ...

    Checking the wheels
    The following procedure applies to both of the wheels. 1. Check: Wheel Damage/out-of-round → Replace. WARNINGNever attempt to make any repairs to the wheel. NOTE: After a t ...

    Other materials:

    Installing the clutch
    1. Install: Conical spring washer "1" NOTE: Install the conical spring washer as shown in the illustration. 2. Install: Clutch housing Thrust washer "1" NOTE: Be sure to install the thrust washer so that its sharp edge "a" is facing away from the clutch boss. 3. Instal ...

    Parking
    When parking, stop the engine, and then remove the key from the main switch. WARNING Since the engine and exhaust system can become very hot, park in a place where pedestrians or children are not likely to touch them and be burned. Do not park on a slope or on soft ground, ...

    Checking the relays
    Check each switch for continuity with the pocket tester. If the continuity reading is incorrect, replace the relay. 1. Disconnect the relay from the wire harness. 2. Connect the pocket tester ( × 1) and battery (12 V) to the relay terminal as shown. Check the relay operation. Out ...

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