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Chart of thread tension adjustment, One needle (Three thread)
A: Reverse
B: Surface
C: Needle thread
D: Upper looper thread
E: Lower looper thread
C
A
B
C
E
A
D
B
E
A
D
B
E
A
D
B
E
A
D
B
12
Needle thread
is loose.
Needle thread
is tight.
Upper looper
thread is tight.
Lower looper
thread is
loose.
Upper looper
thread is
loose.
Lower looper
thread is tight.
Upper looper
thread is loose.
Lower looper
thread is loose.
Tighten
needle
thread.
(yellow or
pink)
Loosen
needle thread.
(yellow or
pink)
Loosen
upper looper
thread
(green)
Tighten
lower looper
thread (blue)
Tighten
upper looper
thread
(green)
Loosen
lower looper
thread (blue)
When you adjust the
thread tension, do it in
the following order:
(1) Needle thread
(2) Upper looper thread
(3) Lower looper thread
Tighten
This is the easiest way
upper looper
to obtain the correct
thread
thread tension.
(green)
Tighten
lower looper
thread (blue)
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