40
20
20
TWO-THREAD USE
Just right.
ADJUSTING THREAD TENSIONS
Turning tension dial to a higher number gives a tighter
thread tension. Turning tension dial to a lower number
gives a looser thread tension. The higher the number, the
tighter the tension.
Test each thread tension on a scrap of the fabric you plan
to use.
Lower looper thread pulled to
under side.
Needle thread pulled to top side.
Decrease needle tension.
Increase needle thread tension.
FOUR-THREAD USE
Just right
Upper looper thread pulled to
under side.
Increase upper looper thread
tension and/or decrease
lower looper tension.
Lower looper thread pulled to
top side.
Increase lower looper thread
tension and/or decrease upper
looper tension.
Left needle thread loose and
visible on under side of fabric.
Increase left needle thread
tension and/or decrease either
or both looper threads.
Right needle thread loose and
visible on under side of fabric.
Increase right needle thread
tension.
Increase tension
Decrease tension
Under side
Top side
Fig. 1
Under side
Top side
Fig. 2
Under side
Top side
Fig. 3
Under side
Top side
Fig. 4
Under side
Top side
Fig. 5
Under side
Top side
Fig. 2
Under side
Top side
Fig. 3
Under side
Top side
Fig. 1
Needle
thread
Needle
thread
Needle
thread
Lower
looper
thread
Lower
looper
thread
Lower
looper
thread
Upper
looper
thread
Upper
looper
thread
Upper
looper
thread
Lower
looper
thread
Lower
looper
thread
Lower
looper
thread
Left
needle
thread
Right
needle
thread
Left
needle
thread
Right
needle
thread