SINGER 631 User Manual
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NI-I-DU; THRHAB THNSION
Needle thread tension too tight ...........
correct by setting dial to lower mim-
W//>, V/Mt Wf/it
Needle thread tension too tooso ■ ■
correct by setting dial to higher mim-
A perfectly locked stitch results with upper and lower tensions balanced so that needle arid bobbin
threads are drawn ecjually into fabric,
y . y .
A perfectly locked stitch results vrilli the upper and lower tensions balanced sO that ireodio and boirbin
threads are drawn ccjually into fabric,