1. Safety: Ensure that the motorcycle is parked on a flat surface, and the ignition is turned off. Use appropriate safety gear, including eye protection.
2. Wheel Removal:
- Loosen the axle nut on the front wheel.
- Lift the front of the motorcycle using a motorcycle stand or similar means to elevate the wheel off the ground.
- Remove the front wheel by sliding it out of the forks.
3. Bearing Removal:
- Remove the dust seals on both sides of the wheel.
- Using a punch and a hammer, carefully drive out the old bearings from their seats.
4. Bearing Installation:
- Place the new bearings into their seats. Ensure they are properly seated and aligned.
- Gently tap the bearings into place using a punch or a bearing driver tool.
5. Dust Seal Installation:
- Replace the dust seals on both sides of the wheel, ensuring proper alignment.
6. Wheel Installation:
- Slide the wheel back into the forks, aligning it with the axle.
- Tighten the axle nut to the specified torque according to Yamaha's recommendations.
7. Functionality Check:
- Test the front wheel for smooth rotation and any irregularities.
Note: Proper bearing installation is crucial to prevent premature bearing failure. If you are not confident performing this procedure, it's recommended to seek assistance from a professional motorcycle mechanic. Additionally, always refer to the specific workshop manual for your Yamaha TTR 125 for accurate specifications, torque values, and any additional instructions.
