kmx125r,
I don't kow exactly how your forks are set up, but on my '84 KDX200, the job of servicing the forks was not all that bad. I was actually able to manufacture all the tools I needed out of PVC plumbing pipe.
For a seal driver, a 2" coupler worked really well, split in half so it clamshells around the fork. If you have non-inverted forks, you may not even have to split the coupler.
For a cartridge rod tool (for the YZ426F), I used a length of 1" PVC pipe, filed a "castle" at one end and put a hole for a rod in the other (to apply the twisting motion).
Overall, fork servicing is not too difficult. If you don't already have one, invest in a shop manual. It makes the job alot easier.
Hope this helps!
Jake