The hand wheel of an old sewing machine can not drive the needle bar and presser foot. How can it be handled?
If the hand wheel and shaft can rotate, then open the front cover to see if the crankshaft and connecting rod work, the positioning pin has not dropped, and if you don't have any mechanical knowledge, please call someone.
Is the hand screw nut in the middle of the handwheel screwed down?
First a new test, if the pressure foot deviation can open the front cover loosen head presser bar fastening screws can be corrected, if you need a needle bar slanting the needle rods to the top with a hammer knock calibration.
