5. thread tension adjustment – SINGER WSL7234 User Manual
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Thread Tension Adjustment
Set the balance of the tension as weak as possible.
Balance of the Loopwer thread;
When the lower looper thread is pulled to the
top of material, loosen tension dial (|, counter
clockwise. (or tighten tension dial (4) clockwise.)
When the upper looper thread is pulled to the
underside, tighten tension dial ^ clockwise, (or
loosen tension dial
%
counter-clockwise.)
(1) Correct tension.
• Lower looper thread and upper thread should
be well balanced with same tension. (Both loop
er threads should make crosses at the edge of
the fabric.)
• Needle thread should not be slacken, or pulled.
(2)
Unbalanced upper looper thread wraps
round and over the back:
Tighten the thread tension of the upper looper
( Dial %) or loosen the thread tension of the lower
looper (Dial. < ).