OK one more time...KIPS

Cleaning out your power valves is not a big deal. I just did mine along with a refreshed top end. First thing you need to do is get a shop manual. Also, go to the JustKDX web site (http://justkdx.dirtrider.net/) and check out the KIPS routine as posted by New Mexico KDXer Brian Kimsey, under Tech Tips.

More than likely, the valves will be carboned and spoogy. If so, you'll have to work with them a bit to get them out. Just follow your manual and Brian's suggestions -- they helped me a tonne. Another thing, make certain you keep track of everything you take out, where its supposed to go and how its supposed to go back in -- especially keep track of what subvalves go on the left vs. the right. I was lucky enough to have a riding buddy help me who knew how the system worked. If not, I might have had some problems. Before you take them out, I would suggest you manually open and close them so that you can see and fully understand how they work.

Finally, good luck. My bike ran pretty well before I did them, but its even crisper and stronger now.

Some other points I forgot to mention ...

If your valves are heavily carboned, you should get some oven cleaner and a stiff wire brush. Actually, mine were so bad I eventually resorted to a tiny slot-head screwdriver to chip out the carbon.

While servicing your power valves is rarely a bad idea, you should also make sure you're jetted properly. If you're experiencing trouble at low rpm, you may want to play a bit with your pilot circuit/air screw. Is your needle stock? Do you have any plug fouling problems?

look at my explanation page below on how to do it. (better explained than the wording in the manual).

Hey Jaguar,
What is different in the later model ('95 & up) KIPS from these instructions?

I really don't know. Hopefully they made it more reliable. You can expect to replace yours once a year. If more often then you can do what I did and just glue the valves in the "port closed" position which favors low end power over top end. Now my bike doesn't rev out as high as it used to but that's OK since I don't really need it. I just do trail riding and ride on the street.