The one on my JD2520 is, I adjusted it to fit my new Suspension seat, because the new seat was way higher and its great now.
Its all a bunch of little jam nuts on the ball joint linkages at the bottom of the stick. Took a few minutes, but its perfect now. :thumbsup:
Its down by your feet. I think you need to remove a plastic cover so see the adjusters. I'm not by mine, or I'd look.
Its literally on the bottom of the stick, so just follow it down with a flashlight and have a look at the bottom of it! :thumbsup: