1. Prepare Your Tools and Workspace:
- Gather the necessary tools, including a seal driver or socket, screwdriver, seal puller, fork seal cleaner, and replacement fork seals.
- Ensure you have a clean and well-lit workspace.
2. Remove the Front Wheel and Brake Components:
- Loosen and remove the front axle nut and bolts.
- Remove the front wheel, spacer, and brake caliper assembly.
- Be careful not to lose the spacers.
3. Remove the Fork Caps:
- Use a screwdriver or appropriate tool to remove the fork cap bolts.
- Unscrew and remove the fork caps.
4. Drain Fork Oil:
- Place an oil pan under the fork leg.
- Loosen the drain bolt at the bottom of the fork leg and allow the oil to drain.
5. Disassemble Fork Components:
- Use a seal puller or appropriate tool to remove the old fork seal.
- Use a fork seal cleaner to remove any dirt or debris from the fork tube and seal area.
- Remove any old dust seal (if applicable).
6. Install New Fork Seals:
- Apply a thin coat of fork oil to the new fork seals.
- Place the new fork seals in the fork tubes, ensuring proper alignment.
- Use a seal driver or socket to drive the seals into position until they are flush with the fork tube.
7. Reassemble Fork Components:
- Reinstall the dust seals (if applicable).
- Slide the fork tubes back into the fork legs.
- Replace the fork caps and bolts.
- Tighten the drain bolts.
8. Reinstall Front Wheel and Brake Components:
- Reinstall the front wheel and spacers, ensuring proper alignment.
- Reinstall the brake caliper assembly and tighten the bolts.
- Tighten the axle nut and bolts to the specified torque.
9. Add New Fork Oil:
- Refer to your YZ motorcycle's service manual for the correct fork oil level.
- Slowly pour the recommended amount of fork oil into each fork leg.
- Allow the oil to settle for several minutes before proceeding.
10. Complete Assembly and Test:
- Tighten the fork caps securely.
- Remount the front wheel, brake components, and any accessories.
- Test the suspension by gently bouncing the motorcycle to check for proper function.
Remember, proper maintenance techniques are essential for the safety and performance of your motorcycle. If you are not confident performing this task, it is recommended to consult with a qualified motorcycle mechanic or refer to your motorcycle's specific service manual for detailed instructions.
