Adjusting Bobbin Tension - Kenmore 1020 Owner's Manual

ADJUSTING BOBBIN TENSIONS
Bobbin tension requires adjusting less frequently than the upper thread
tension.
If the stitch is satisfactory but the seam is puckered, it may be necessary to
loosen the tension on both the top and bottom threads. Be sure to balance
them as indicated on Page 9.
When adjusting the tension on the bobbin case, make slight adjustments with
a screwdriver.
DECREASE TENSION
Turn Counter Clockwise.
INCREASE TENSION
Turn Clockwise.
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