| Tension | Adjustment | 7- | ||||||||
| |||||||||||
|
|
|
|
| |||||||
Set the balance of the tension as weak as possible. | |||||||||||
Balance of | the | Loopwer | thread: |
|
|
|
| ||||
| is | pulled to | the | ||||||||
When | the | lower | looper | thread | |||||||
top of | material, | loosen | tension | dial | 3 counter | ||||||
clockwise. | (or | tighten | tension dial | 4 | clockwise.) | ||||||
When | the | upper | looper | thread | is | pulled to | the | ||||
underside, | tighten | tension dial | 3 | clockwise. | (or | ||||||
loosen | tension | dial 4 |
| ||||||||
|
|
|
|
|
|
(1) Correct | tension. |
| |
|
| ||
• | Lower looper thread and upper | thread should | |
| be well balanced with same tension. (Both loop | ||
| er threads should make crosses | at the edge of | |
| the fabric.) |
| |
• | Needle thread should not be slacken, or pulled. |
2
(2) Unbalanced | upper | looper | thread | wraps | |||||
round | and | over | the | back: |
|
| |||
Tighten | the | thread | tension of the upper | looper | |||||
(Dial | 3 | ) | or | loosen the thread tension of the lower | |||||
looper (Dial- 4 ). |
|
|
|
|
|
| Right side |
Upper looper thread | |
needle thread | |
r |
Tighten
4
Loosen