Adjustments; Needle Thread Tension - Yamato VFK2560-8 Instruction Manual

6

. Adjustments

Before adjusting, ALWAYS turn the power switch OFF and check that the machine has already stopped.
6.1 Needle thread tension
As standard, set the part "a" of needle thread take-up ①
to be horizontal when the needle bar is at its lowest point.
To adjust the needle thread tension by adjusting each nee-
dle thread, move the needle thread eyelets ② .
● When the needle thread eyelets ② is moved toward "T,"
the needle thread is tightened.
● When the needle thread eyelets ② is moved toward "L,"
the needle thread is loosened.
The standard positions of the needle thread eyelets ② are
as follows:
Left needle:
Left inside needle:
Right inside needle:
Right needle:
Adjust the positions using the screws ③ .
Move the needle thread eyelet holder ③ , loosen the
screws ④ and adjust the needle thread tension.
● When the holder ③ is moved toward "T," the needle
thread is tightened.
● When the holder ③ is moved toward "L," the needle
thread is loosened.
The standard position of the needle thread eyelet holder ⑤
is where the bottom end of the needle thread eyelet holder
plate ⑥ and bottom end of the tenssion post support ⑦
are aligned.
35 ㎜
35 ㎜
25 ㎜
25 ㎜
①
Fig.6-1
Ｔ
Ｌ
Fig. 6-2
Ｔ
Ｌ
⑤
Fig. 6-3
27
a
②
35 ㎜
25 ㎜
⑤
③
⑥
④
⑦
VFK2560-8