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Thread tension (3 threads)
Correct tension
(_ Wrong side of fabric
Needle thread
Lower looper thread
Right side of fabric
(_ Upper looper thread
Adjusting the thread tension may be required depending
on the type of fabric and thread being used.
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Thread tension adjustment
Set all three thread tension dials at "3". Then sew, and
check the thread tensions.
Thread tension dial
(_ Setting mark
Tighten
Loosen
Incorrect tension
Needle thread is loose.
Tighten needle thread tension.
(_ Wrong side of fabric
Needle thread
Right side of fabric
Upper looper thread
(_ Lower looper thread
(_ Left needle thread tension
Right needle thread tension
Incorrect tension
(_ Wrong side of fabric
Lower looper thread
Needle thread
Upper looper thread
(_ Upper looper thread tension
(_ Lower looper thread tension
Lower looper thread is tight and/or upper looper thread is
loose.
Loosen lower looper thread tension and/or tighten upper
looper thread tension.
Incorrect tension
(_ Wrong side of fabric
Right side of fabric
Upper looper thread
Needle thread
(_ Lower looper thread
(_ Upper looper thread tension
Lower looper thread tension
Upper looper thread is tight and/or lower looper thread is
loose.
Loosen upper looper thread tension and/or tighten lower
looper thread tension.
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