Welcome.Thank you for this reference, helped me out. Just got my AT4 1500 and working on fixing it up to my liking.
For those wondering how to get access to the fixtures, I found going above the tow bar, from the spare tire, was easiest to allow me to get torque on them. See the attached Pic of my hand. It may also help to drop the spare tire. And then like the instructions say, give them a counter clockwise turn and they should slide out
