How do you apply a fashion disc in a singer 306k?
Undo the large silver wheel on the upper front of the machine.
The fashion disc locates on to a small pin with the pattern ( on
the disc ) visible. Replace silver wheel - set width of zig-zag,
and stitch length, and sew. If the stitching pattern created by the
fashion disc is asymmetrical, fitting the disc upside ( pattern
hidden ) reverses the stitching. 20+ fashion discs were made by
Singer ! A DISC MUST BE ON THE MACHINE AT ALL TIMES, FOR STRAIGHT
STITCHING