Clear tube float level check ?

ive been hearing about doing the clear tube float check i feel like i understand how the process of checking goes (connecting the clear tubing and opening up the drain and seeing how hig or low the level is) but how do i go about adjusting the level? is it just gently bending the brass arms on the floats? and at what level should my carburetors be on a 83 kz550 LTD

What model? Shaft drive or chain drive?

If chain drive, I have multiple manuals in my signature. You should grab all of them. They will have details on carb settings and a whole lot more.

I also have a site dedicated to the TK22 carbs for the chain drive Ltd. It has a page for setting the floats dry, as a preliminary step.