24
VE2700-8
6. Adjustments
①
③
④
⑤
②
⑧
⑥
⑦
6.2 Top cover thread tension
Loosen the screws
⑥ and move the top cover thread
eyelet (left) ⑦ to adjust it.
● To decrease the take-up amount, turn the top cover
thread eyelet (left)
⑦ in the directon
T
.
● To increase the take-up amount, turn the top cover
thread eyelet (left)
⑦ in the directon
L
.
At the standard position, the part
a
of the top cover
thread eyelet (left) ⑦ is horizontal.
When using stretchable thread for top cover thread, turn
the top cover thread eyelet (left)
⑦ in the direction
L
.
Note: When using stretchable thread, thread the top
cover thread through the lower eye of the top cover
thread take-up
⑧.
Fig. 6-6
L
For stretchable thread
T
a
Fig. 6-4
Fig. 6-5
Some kinds of thread may cause skip stitch because a loop
cannot be formed well and the looper fails to catch the
needle thread.
In this case, thread the needle thread through the needle
thread retainer disc
②
of the needle thread retainer sup-
port (No. 3103000)
①.
Use the needle thread guide when the needle thread does
not form a loop stably with stretchable thread like woolly
thread.
As standard, when the needle bar is at the lowest point,
align the center of the eye of the needle bar thread eyelet
③
with the top of the needle thread guide
④
and make
them parallel.
Loosen the screw
⑤
to adjust the height and the right-
and-left position of the needle thread guide
④
.