There are two large T handle clamps on the front of the frame at that top of the hitch. Just loosen these to lift the hitch off. You might need a wrench to get them loose, but is is very easy to do. If your tractor has a drive shaft attachment to the front hitch, you remove that the same way as you remove the mower deck drive shaft. Once you have the T handles loose, there are some pins at the bottom that will also need to be removed, but that part should be self evident how to do it. Just be careful because the hitch is heavy and can catch you off guard and do some serious damage if it falls on your foot. Just don't unscrew the T handles completely, just loosen them.