I am new to pools, just purchased a house with a 16x32 inground pool, vinyl liner. It has two returns with eyeballs, that look similar to the model pictured at this page: http://www.a1poolparts.com/-strse-1141/ ... Detail.bok
I'd like to adjust the aim of the returns to try and fix some dead spots in water circulation. The problem is, I can't get either return eyeball to move at all, nor can I unscrew the large collar-looking piece that surrounds the eyeball, at least by hand. I'd like to know what physically needs to be done to adjust the aim. Do I need to get a wrench in the pool and force it loose? Does the collar move separately from the long threaded portion that must attach to the plumbing? Do I need to drain the pool below the returns before messing with it (which means it will not be adjusted until closing time, I suppose)? I don't want to mess up the liner, or create a gap, where it meets the return.
Any advice is appreciated. Thank you. (And, this being my first post after a couple months of lurking prior to the recent house purchase, thanks to everyone for the great site. So far, so good with BBB, knock on wood.)