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Thread Tension (3 threads)
Correct tension
The illustration at left shows sewing results with
correct tension settings. However, adjusting the
thread tension may be required depending on the
type of fabric and thread being used.
1
Wrong side of fabric
2
Right side of fabric
3
Right or left needle thread
4
Upper looper thread
5
Lower looper thread
Thread tension adjustment
* Set all three thread tension dials at "3".
Then sew, and check the tension balance.
If the tension balance on the test piece is not
satisfactory, you can adjust the thread tension
with thread tension dial.
6
Thread tension dial
7
Setting mark
8
Loosen
9
Tighten
Needle thread tension is too loose
The illustration shows sewing results when the
needle thread tension is too loose.
Remedy:
Tighten needle thread tension.
10 Left needle thread tension dial
11 Right needle thread tension dial
Looper thread tension is out of balance (1)
The illustration shows sewing results when the lower
looper thread tension is too tight and/or upper looper
thread tension is too loose.
Remedy:
Loosen lower looper thread tension and/or tighten
upper looper thread tension.
12 Upper looper thread tension dial
13 Lower looper thread tension dial
Looper thread tension is out of balance (2)
The illustration shows sewing results when the upper
looper thread tension is too tight and/or lower looper
thread tension is too loose.
Remedy:
Loosen upper looper thread tension and/or tighten
lower looper thread tension.
12 Upper looper thread tension dial
13 Lower looper thread tension dial
29
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