A schematic, parts list, history, anything you can send me will appreciated.
Cheoy Lee of course didn't make the toilet (guess I could always be wroug).
But my recommendation if you know have a CL is to join the Cheoy lee Owners Assoc. where you have a reasonable chance of getting CL specific question answered.
__________________
It is OK if others want to do it different on THEIR boat
Find the maker's plate or logo on the toilet, it is there somewhere unless it has been stolen or worse, is a copy of someone's design. There's no guarantee that's the original toilet that came with the boat, either.