Hello Nicole,
Thread the machine up top and bottom and open the slide plate, take and hold the threads to the back and turn the balance wheel towards you all the way over to form a stitch and see what is happenning at the bobbin, if the thread is not clearing the bobbin you may need to retime it, check to make sure the winder is all the way down if it is a self winding bobbin, if you need timing instructions you can e-mail me below and I will attach them.
Ken
drivewithken@blueyonder.co.uk
November 2008