Thread Tension (4 threads)
Correct tension
The illustration to the left shows a seam sewn at the
correct tension. Note that you may need to adjust the
thread tension depending on the fabric and thread being
used.
q
Wrong side of fabric
w
Right side of fabric
e
Right needle thread
r
Left needle thread
t
Upper looper thread
y
Lower looper thread
Left needle thread tension is too loose
The illustration to the left shows a seam sewn when the
left needle thread tension is too loose.
Remedy:
Tighten the left needle thread tension.
! 1
Left needle tension dial
Right needle thread tension is too loose
The illustration to the left shows a seam sewn when the
right needle thread tension is too loose.
Remedy:
Tighten the right needle thread tension.
! 2
Right needle tension dial
Thread tension adjustment
Set all four thread tension dials to
“3”.
Sew and check the thread tension.
If the tension on the test piece is not satisfactory, you can
adjust the thread tension with the thread tension dial.
u
Thread tension dial
i
Setting mark
o
Loosen
! 0
Tighten
u
i
o
! 0
q
w
e
r
t
y
q
e
r
w
t
y
! 1
! 2
37
q
e
r
w
t
y
