Adjusting The Thread Tension; Changing The Tension Of The Upper Thread - Brother CS-8070 Operation Manual

S2_brotherE.book Page 50 Thursday, February 13, 2003 11:03 AM
SEWING BASICS ————————————————————————————————————————————————————————

Adjusting the Thread Tension

The tensions of the upper thread and of the bobbin thread (thread tension) should be adjusted so that they are
equal.
Changing the tension of the
upper thread
If the thread and needle combination is correct for
the type of fabric being sewn (according to " Needle
types and their uses" on page 30), the thread tension
will automatically be adjusted to the appropriate
setting. However, if the preset thread tension does
not give the desired result or if you are sewing with
special thread or on special fabric, use the thread
tension dial on the left side of the machine to adjust
the tension of the upper thread.
I Correct thread tension
The upper thread and the bobbin thread should
cross near the center of the fabric. Only the upper
thread should be visible from the right side of the
fabric, and only the bobbin thread should be
visible from the wrong side of the fabric.
1
2
3
1 Wrong side of fabric
2 Right side of fabric
3 Upper thread
4 Bobbin thread
I Upper thread is too tight
If the bobbin thread is visible from the right side
of the fabric, the upper thread is too tight.
1
2
3
1 Wrong side of fabric
2 Right side of fabric
3 Upper thread
4 Bobbin thread
5 The bobbin thread is visible from the right side of
the fabric.
50
4
5
4
Turn the thread tension dial downward to loosen
the upper thread.
I Upper thread is too loose
If the upper thread is visible from the wrong side
of the fabric, the upper thread is too loose.
1
2
3
4
1 Wrong side of fabric
2 Right side of fabric
3 Upper thread
4 Bobbin thread
5 The upper thread is visible from the wrong side of
the fabric.
Turn the thread tension dial upward to tighten the
upper thread.
Tight
Loose
1
1 Thread tension dial
5