Consew 7360RB - Thread Tension Adjustment; Thread Take-Up Spring Adjustment

THREAD TENSION ADJUSTMENT
Thread tension should be determined in tandem with the stitch obtained by adjusting the tension on the
bobbin thread and the needle tension Fig. 12. The tension ofthe bobbin thread should be adjusted by turning
the tension spring regulating screw on the bobbin case. Once it is adjusted, insert the bobbin into the bobbin
case and hold the end of the thread from the case and let it hang. Ifthe bobbin rotates slowly downward the
tension is correct. The tension on the needle thread is adjusted by turning the thumb nut.
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13
Fig. 13
Nonnal stitch form
Fig. 14
-+Needle thread
• Bobbin thread
The stroke of the thread take-up spring runs from Smm to lOmm. When sewing very thin fabrics, reduce
the thread take-up spring tension and increase the thread take-up spring stroke. Conversely increase the
thread take-up spring tension and reduce the thread take-up stroke when sewing very thick fabrics.
To adjust the thread take-up spring tension: (Fig. 13), first loosen the set screw (A) then turn the tension stud
(B) counter clockwise to decrease the tension of the thread take-up spring ( C ) to zero. then turn the tension
stud (B) clockwise till the spring (C) comes to the notch of the tension regulating bushing, and again turn the
tension stud (B) halfway back (counter clockwise), After the adjustment, tighten the set screw (A).
Adjusting the thread take-up spring stroke: (Fig. 14) loosen the set screw (B) turn the stud (C) clockwise to
increase
the stroke or turn stud (C) counter clockwise to decrease the stroke. After making the adjustment,
tighten set screw (B).
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From the library of: Superior Sewing Machine & Supply LLC