Chart of thread tension adjustment, Two needle (Four thread)- Page 13

English

11

A

C

B

A

B

D

A

B

E

F

A

B

E

F

A

B

E

F

A

B

C

D

Chart of thread tension adjustment, Two needle (Four thread)

A: Reverse
B: Surface
C: Left needle thread
D: Right needle thread
E: Upper looper thread
F: Lower looper thread

Right needle 

thread is 

loose.

Left needle 

thread is tight.

Right 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.

Left needle 

thread is 

loose.

When you adjust the 
thread tension, do it in 
the following order:
(1) Left needle thread 
(2) Right needle thread 
(3) Upper looper thread 
(4) Lower looper thread
This is the easiest way 
to obtain the correct 
thread tension.

Tighten left 

needle thread. 

(yellow)

Tighten right 

needle thread. 

(pink)
 

Loosen left 

needle thread. 

(yellow)
 

Loosen right 

needle thread 

(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)