When stitching is unsatisfactory as in figures
2 and 3, adjust the upper thread tension. Lower
thread tension requires adjustment less frequently
than the upper thread tension.
When stitch is satisfactory, as in figure 1 and seam
is badly puckered, the cause may be tight tensions
and both upper and lower may be adjusted.
(See page 26)
When adjusting the tension on the bobbin case,
make slight adjustments with a screwdriver. (See
page 26)
INCREASE TENSION
Turn Clockwise.
DECREASE TENSION
Turn Counter
Clockwise.
13
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