You've just loosened the compression valve from the fork leg. All you have to do is tighten it up again and you'll be set, you haven't damaged anything. There is a hitch though . . . . the compression valve threads into a cylinder through which the damper rod travels. You can sit there and turn the compression valve until the cows come home but you'll never get it to tighten up again, the cylinder will turn inside the fork at the same time. You can check you shop manual or
www.buykawasaki.com for an illustration.
There are a couple things you can do. One is to remove the cap, spring etc from the fork make yourself a cylinder holder (instruction on JustKDX) and tighten up the compression valve again or, GULP, use an impact wrench and tighten it up. Only tighten it until its just snug then use your torque wrench to tighten it the rest of the way. Use a very low air pressure and your wrench on the lowest torque. Once snug you'll likely be able to tighten the compression valve independent from the cylinder. I've never used an impact wrench on a fork before so I'd get some advice from someone who has first. I know people who do it all the time with good success, I won't use one. Please be careful not to damage or strip anything! If you are concerned take the bike to your dealer and have them tighten it back up for you.
You'll need to reset the oil level once everthing is back together which will involve removing the fork cap and spring . If I was you I'd just go with the cylinder holder for the extra time it would take to build one ? ? ? ?
Once you have it tightened back up again take a look at the bottom of the fork. You see the screw, its under the rubber cap if its still there, that's your compression adjustment. Just use a flat bladed screwdriver and click away.
David