How to Change the Front Fork Seals on a Yamaha WR 250

Written by robert good
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How to Change the Front Fork Seals on a Yamaha WR 250
(Jupiterimages/Brand X Pictures/Getty Images)

The Yamaha WR 250 is a dirt bike that comes with either a two- or a four-stroke engine. Whichever engine your bike has, the process for changing the fork seals is the same. The seals are the plastic rings in the centre of the forks that keep the air or oil inside the fork. If the seals are bad, the oil or air will leak out and cause the forks to fail. Changing the seals is a fairly simple job that requires just a few tools.

Skill level:

Things you need

  • Motorcycle stand
  • Allen wrench set
  • Flathead screwdriver

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  1. 1

    Support the WR 250 on the motorcycle stand so that the front wheel is off the ground. Loosen the clamp at the top of each fork using the correct size Allen wrench.

  2. 2

    Pull the forks from the clamps. Pry the seals off the forks using the flathead screwdriver. Slide the seal off the fork and discard.

  3. 3

    Slide the new seals onto the forks. Force the seals into position on the forks by pushing them down until they snap into place. Reattach the forks to the clamps and tighten the clamps.

Tips and warnings

  • If you have air-filled forks, you will need to refill them with air once you have changed the seals.

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