Setting the Left/Right Shift
Another function largely specific to zig-zag stitches, adjusting the left/right shift changes the placement of the zig-zag stitch over the center line. This shifts the needle position at the start of the stitching to the left if you hit the minus (-) sign, and to the right if you hit the plus (+) sign.
As with width and length adjustments, you can save your preference to the machine. However, to avoid needle breakage, make sure to slowly lower the hand crank after adjusting the left/right shift so that you don’t ram the needle in to the presser foot.