Singer 337 - Stitch Length Adjustment for Zig-Zag Satin Stitching

14
NEEDLE THREAD TENSION,
STRAIGHT STITCHING
_11__ - ~_.t_
Needle thread tension too Needle thread tension too
tight--correct by setting dial to loose---correct by setting dial to
lower number, higher number.
A perfectly locked straight stitch results with upper and lower tensions balanced
so that needle and bobbin threads are drawn equally into fabric.