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24
VT2500
6. Machine adjustment
⑤
⑥
054
056
To increase
To decrease
②
①
055
To decrease
To increase
20mm
③
④
Looper starts tak
-
ing up the thread.
6.2 Top cover thread tension adjustment
In the standard position of the top cover thread
take-up eyelet, the distance between the top
surface of the arm and the top surface of the top
cover thread take-up eyelet ① is 20 mm.
Loosen the screw ② to adjust the top cover
thread take-up eyelet ① . Once the eyelet has
been positioned, tighten the screw ②.
● To decrease take-up amount, lower the top cover
thread take-up eyelet.
● To increase take-up amount, raise the top cover
thread take-up eyelet.
* When using wooly thread or other stretchable
thread as the top cover thread, lower the top
cover thread take-up eyelet ①.
6.3 Looper thread tension adjustment
Thread Take-up Eyelet Adjustment
The thread take-up eyelet ③ is at the standard
position when the screw ④ is at the lowermost
position of the slot.
Loosen the screw ④ to adjust the thread take-up
eyelet ③ . Once the eyelet has been positioned,
tighten the screw ④.
● To decrease take-up amount, raise the thread
take-up eyelet.
● To increase take-up amount, lower the thread
take-up eyelet.
SUPPLEMENT
Too much take-up of looper thread can cause skip stitch.
Looper Thread Take-up Adjustment
When the needle bar is at the highest point (top
dead center), adjust the looper thread take-up ⑤
to the position where the looper starts taking up
the thread. To adjust the position, loosen the
set screw ⑥ of the looper thread take-up ⑤