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Thread Tension (4 threads) F
Correct tension
The illustration at right shows sewing results with
correct tension settings. However, adjusting the
thread tension may be required depending upon the
type of fabric and thread being used.
(_Wrong side of fabric
(_ Right side of fabric
(_ Right needle thread
(_ Left needle thread
(_) Upper looper thread
(_ Lower looper thread
Thread tension adjustment
* Set all four thread tension dials at "3".
Then serge, and check the thread tensions.
If the tension balance on the test piece is
factory, you can adjust the thread tension with
thread tension dial. .........
(_ Thread tension dial
® ......Setting mark ......................................................
L
oosen
@ Tighten
Left is
The illustrat; _hows sewing :utts when the left
needle thre_a :i_ _ion is too :i8 _:&
Re medy [ ; : : :
Tighten the left tension.
@ Left needle thread tension dial
f
11
®
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Right needle thread tension is too loose
The illustration shows sewing results when the right
needle thread tension is too loose.
Remedy:
Tighten the right needle thread tension.
@ Right needle thread tension dial
/
®
11
\ J
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