To regulate the length of stitch, To regulate the width of bight, Instructions – SINGER 143G2 User Manual
Page 9: Adjusters and mechanics, Thread controller
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To Regulate the Length of Stitch
Press the stitch regulator lever (A, Fig. 17) and at the same
time turn the machine pulley over toward you until the lever (A)
Fig. 17. stitch Regulator
Continue to hold the lever (A) In the notch In the flange (B)
and at the same time turn the machine pulley backward or for
stitch Is opposite the arrow; as shovm In Fig.
the lever (A).
To Regulate the Width of Bight
The width of bight or zigzag stitch Is regulated by means of
the width of zigzag stitch, turn the regulating spindle head over
to the right. The extreme width of zigzag stitch Is 3/16 Inch
for Machine 143G2, and 5/16 Inch for Machine 143G3.
ADJUSTERS AND MECHANICS
The function of the thread controller spring (Q,Fig.18) Is to
hold back the slack of the needle thread until the eye of the
especially silk) will sometimes be penetrated by the point of the
needle as the needle Is descending.
For more controller action on the thread, loosen the stop
screw (U,Flg.l8) and set the stop (R) lower. For less action,
set the stop higher. The position of the controller spring (Q)
shown In Fig. 18 is the best average setting for stitching fine
fabrics and light leathers.
thread, loosen the tension stud screw (V,Fig.18), and turn the
tighten the tension stud screw (V).