Hello Judy,
When you press on the foot control can you hear the motor running, if you can slacken off the stop motion and push the bobbin winder on and then press on the foot control, if the winder does not go round the chances are that either the belt has broken or the belt has come off and jammed between the motor pulley and motor, you will know if that is the problem because you will hear a buzzing sound from the motor,
let me know how you get on.
drivewithken@blueyonder.co.uk
Ken
drivewithken@blueyonder.co.uk, January 2008