singer walking foot answers and questions

I found out one of the problems I was having. When finished sewing, I'd
pull out the material, and three threads would come out the bottom. A local
who contacted me said to rotate the needle just past top, and it would come
out cleanly. It works.

Now, is there a disengage for when you wind bobbins? Something where the
flywheel will just spin and not all the up and down mechanism?

Singer 111w155 . I'm getting this slowly running good. Just a couple of
small adjustments to go.

Steve