I know those whites inside and out at this point in life Ha ha ha ... That on ehas been refinished and looks preety good, it very hard to find one that still shows it's red and green in there decals....
it looks like your missing the back piece on the cabinet and the front piece. I think on that cabinet under the top there should be what looks like a wire loop / belt guide if that get missed it will kick the belt off, also people often get the bellt in the wrong hole at the flywheel..
unless the hand wheel has already been remove, it will take a puller to get it off, don't hammer it off, whites are very easy to bend there crankshafts .....
with the belt off and spin the hand wheel it should freely turn over 3 x's with one spin by hand,, if it has any sticky spots.. take the bottom end apart clean and polish all rotating points..
There white FR's where one of the best ever made ... they turn backwards from a singer teh bobbin threads back wards from a singer .. There is a adjustment for the cable that hold the machine up,, make sure it's not real tight. the cable can and will break
They take a standard needle