I'd get another presser foot from Sew-Classic. com for zig zag stitching. If it is left homing, then the manual would be nice before you buy anything. Try one of the google groups for foreign machines. It may be Japanese. Please check the serial number for a JA, then you will know. Anything is better than that zipper foot you now have. Can you borrow another foot from a friend? If it is left homing, then Sew-Classic.com would be your best bet. Don't give up. There is help out here. Some of the other members are well versed in foreign machines.