Hello Michele,
Is the needle actually moving side to side when you select zig zag ? if it is then the most probable cause is either a bent or blunt needle, is the machine sewing perfectly in straight stitch or is it missing stitches so you get a sew short ones then a long one ? try the needle first, it is the most likely, failing that it may be that the machine needs oiling because the mechanism is stuck, WD40 is best, make sure you have all the settings set properly, the very worst it would be is out of time but let me know if the above does not work.
drivewithken@blueyonder.co.uk
Ken
Ken Dourof
June 2007