Looper Thread Tension; Position Of The Looper Thread Take-Up - Yamato VE2700-8 class Instruction Manual

6.3 Looper thread tension

6.3.1 Looper thread tension
As standard, align the eyes of the thread take-up eyelets
③④ with the mark ② of the cast-off plate ①.
Loosen the screws ⑤ and adjust the looper thread tension
by moving the thread take-up eyelets ③④.
● To increase the take-up amount, move the thread
take-up eyelets ③④ toward the operator.
● To decrease the take-up amount, move the thread
take-up eyelets ③④ backward.
Do not increase the take-up amount too much. It may
cause skip stitch.
For stretchable thread
Pull the thread take-up eyelets ③④ fully toward the
operator.
Do not thread the looper thread through the supplemen-
tary tension disc ⑥.

6.3.2 Position of the looper thread take-up

The looper thread take-up ⑦ viewed from the needle bar
is shown in Fig. 6-10.
Loosen the screws ⑧ and adjust so that the looper thread
comes off from the highest point of the looper thread
take-up ⑦ when the needles are lowered from the highest
point and the left needle reaches half the height of the
looper.
①
②
Decrease
Increase
④
Fig. 6-7
For normal thread
⑥
Fig. 6-8
1/2
Looper
Fig. 6-9
Looper thread
⑦
Fig. 6-10
25
6. Adjustments
③
Decrease
Increase
⑤
For stretchable thread
⑥
①
Left needle
⑧
①
VE2700-8