Chart of thread tension adjustment, One needle (Three thread)- Page 14

12

A

C

C

B

A

B

A

B

D

E

A

B

D

E

A

B

D

D

E

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 

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)

Tighten 

upper looper 

thread 

(green) 

Tighten 

lower looper 

thread (blue)

Upper looper 

thread is loose.
 

Lower looper 

thread  is loose.