Changing gasoline pump but tank screws lose but dont come out , they keep turning..its a Bonneville 1995...does it have a bult on top...how do I take tank down??

There is a nut that is welded on a clip and the welds will break.That is why it is just turning and not coming out.I usually spray them down real good with P.B.Blaster and let them soak.Sometimes it works and sometimes it doesn`t.What you will have to do is either try and cut the bolt off or cut the strap and get new ones.What I usually did was use my die grinder and grind the head off the bolt and then remove the strap.What ever is easier for you.Hope this helps.Good luck.

The nuts on top are usually held with a weld, but not uncommon for them to break loose and spin. Should be 2 straps, and one bolt at one end of each. You may have to get wrench, or vise grips up in there to stop nut from turning. Lots of penetrating spray on them, they will probably be pretty rusted at the threads.