—
5
—
2) Adjusti g of the thread regulator
The th
d regulator 9 (see the right picture) regulates the amount of needle thread necessary for stitch
formation. The setting depends on the following factors: material thickness, yarn characteristics and stitch
length.
The thread regulator is fitted with slots for this purpose. Moving in the “+”direction increases the quantity
of needle th ad; Moving in the “-”direction reduces the quantity of needle thread.
3)
Adjusting of upper thread tension
Tensio
ould be as low as possible. The crossover point should be in the center of the material. Upper
thread tension can be adjusted by thread tension nut 4 and 5 (see the picture of above). Turn the thread tension
nut clockwi to increase the needle thread tension. Turn the thread tension nut counter-clockwise to decrease
the needle th ead tension.
re, and wind the end of the thread clockwise
arou
n
wind
ound on, remove
the b
nife 3.
5)
read is unwound from it moves in the opposite direction
to th
6, pass the thread through slit 4 and pull about 3 cm
pass the thread through the flap’s guide 5.
n
rea
re
n sh
se
r
4)
Winding the lower thread
(1) Place the bobbin onto the bobbin winder shaft.
(2) Pass the thread for winding thread as shown in
the figu
nd the bobbin several times.
(3) Push the bobbin presser 1 toward the bobbin.
(4) The operation will automatically stop whe
ing is completed. The amount of thread wound
onto the bobbin should be a maximum of 80% if the
bobbin capacity. The amount of thread would be
regulated by screw 2.
(5) After the thread has been w
obbin and cut the thread with the thread-trimming k
Threading the lower thread
(1) Raise flap 1 and remove the empty bobbin.
(2) Insert bobbin 2 in such a way that when the th
e gripper.
(3) Pass the thread through slit 3 and below spring
through.
(4) Close flap 1 and
Содержание GC20688-BDC
Страница 24: ...A ARM BED MECHANISM 21...
Страница 28: ...B THREAD TENSION REGULATOR MECHANISM 25...
Страница 31: ...C NEEDLE BAR AND THREAD TAKE UP MECHANISM 28...
Страница 34: ...D PRESSER FOOT MECHANISM 31...
Страница 37: ...E UPPER FEED LIFTING ROCK SHAFT MECHANISM 34...
Страница 40: ...F STITCH REGULATOR MECHANISM 37...
Страница 43: ...G FEEDING AND FEED LIFTING HOOK SHAFT MECHANISM 40...
Страница 46: ...H HOOK SADDLE MECHANISM 43...
Страница 50: ...I OIL LUBRICATION MECHANISM 47...
Страница 53: ...J ACCESSORIES 50...
Страница 55: ...K PNEUMATIC CONTROL MECHANISM 52...
Страница 57: ...L KNIFFE MECHANISM 54...