Hi are you sure the rangefinder is off? To check, find a thin object like a television aerial or similar which is more than 100 meters away and see if the rangefinder images overlap at infinity. If they do, then the issue is with the shimming of the Jupiter 9 lens block - this is easy to sort out as the lens block unscrews from the mount. In this case you will need a ground glass screen from an old SLR, and a magnifying glass. Lock the shutter open, fit the lens to the camera at maximum aperture (F/2). Its best to focus the rangefinder on a page of printed paper quite close. Now if you put the screen on the film guides in the back of the camera and use the magnifying glass, you will see if the lens image is blurred. Now move backwards/forwards until the image sharpens up. If you need to move backwards then a shim needs removing, forwards and you need to add a shim. Shims can be made from printer paper.
If however the RF does NOT line up at infinity, you will need to remove the top of the camera to access the RF adjustment screws. With Kiev 4 cameras you really need to remove the shutter mechanism to get to the screws. I believe the mechanism inside the Kiev 5 is basically the same as the Kiev 4 but someone else may confirm this.
http://www3.telus.net/public/rpnchbck/adjust%20rangefinder.html shows how to adjust the RF on a Kiev 4.
Cheers,
Steve