4020 3pt hitch operation

What setting, on the lever on the bottom right side of the seat makes the 3 point follow the rockshaft lever?

Thanks,
Ray

There should be a depth control stop on the three point lever. I have a 1966 4020 and the three point lever is on the right. The external cyl control is on the left.

Is ther a small level on the dash under the three point lever? If there is this is the lock for the stop control. Pull up on the lever and see if you can turn it . This controls the tightness of lock on the stop. It acts like a cam lock . Up or down locks the stop in position. The Stop slides up or down or could be out of track or missing. Once you get the stop set you should be able to pull your three point lever down to it and your mower should return to the same depth. Then if you need to go down further past the stop you move your lever to the right and you can go on down with out moving your stop.

Thanks,
Ray

Thanks,
Ray