10
A
C
B
A
B
D
E
A
B
D
E
C
A
B
D
E
A
B
D
E
Chart of thread tension adjustment, One-needle (Three-thread)
When you adjust the
thread tension, do it in the
following order:
(1) Needle thread
(2) Upper looper thread
(3) Lower looper thread
This is the easiest way to
obtain the correct thread
tension.
A: Reverse B: Surface C: Needle thread D: Upper looper thread E: Lower looper thread
Needle thread is
tight.
Upper looper
thread is tight.
Lower looper
thread is loose.
Upper looper
thread is loose.
Lower looper
thread is tight.
Needle thread is
loose.
Tighten needle
thread.
(yellow or green)
Loosen needle
thread.
(yellow or green)
Loosen upper
looper thread
(pink)
Tighten lower
looper thread
(blue)
Tighten upper
looper thread
(pink)
Loosen lower
looper thread
(blue)
Tighten upper
looper thread
(pink)
Tighten lower
looper thread
(blue)
Upper looper
thread is loose.
Lower looper
thread is loose.
Chart of thread tension adjustment, One-needle (Two-thread)
A: Reverse B: Surface C: Needle thread D: Lower looper thread
A
C
D
B
A
C
D
B
A
C
D
B
Needle thread is
tight.
Lower looper
thread is loose.
Needle thread is
loose.
Lower looper
thread is tight.
Loosen needle
thread.
(yellow or green)
Tighten lower
looper thread
(blue)
Tighten needle
thread.
(yellow or green)
Loosen lower
looper thread
(blue)
Summary of Contents for 4234D
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