[sgtoo10]

I have recently purchased a spray arm for my ge dishwasher and do not have any instructions on how to replace it

[denman]

I have not worked on this unit but it looks like it just screws in.
There is a good chance that it is a left hand thread.

[couldntfindabettername]

Everything unscrews all the way down to a small/med hole (flush) in the bottom of the dishwasher. I JUST repaired my washer arm and couldn't figure it out. I have spent the last two days on the internet trying to get tips. Apparently, everyone has this problem and there are no solutions posted. I just kept working it until it unscrewed. Try turning that bottom piece counter clockwise. I used a dishtowel to get a better grip. It'll turn one way or another.