SINGER 1050 - Manual (Page 29)

Upper Thread Tension
Having selected the correct needle and thread combination
for the fabric being used, it may be necessary to adjust the
tension of the sewing machine to ensure a well balanced stitch.
A well balanced stitch is produced when the upper and lower
threads appear the same on the fabric, illustration A.
Yourmachine has an adjustable uppertension control system.
This control exerts tension on the upper and lower thread
as they pass through the machine to form a stitch.
• Too much tension will produce a tight stitch which will
cause puckered seams, illustration B.
To decrease tension, turn dial to a lower number.
• Too little tension will produce a loose stitch, illustration C.
To increase tension, turn dial to a higher number.
When an even amount of tension is exerted on both threads,
a smooth even stitch known as a balanced stitch, is produced.
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