HIGHLEAD GC20688 Series, Instruction Manual And Parts List

Page: 6 / 62

—
5
—
4. HOW TO USE THE MACHINE
1) Threading
Raise the thread take-up lever to its highest position and thread the upper thread in the following order.
2) Adjusting of the thread regulator
The thread 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 thread; Moving in the “-”direction reduces the quantity of needle thread.
3) Adjusting of upper thread tension
Tension should 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 clockwise to increase the needle thread tension. Turn the thread tension nut counter-clockwise to decrease
the needle thread tension.
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 figure, and wind the end of the thread clockwise
around the bobbin several times.
(3) Push the bobbin presser 1 toward the bobbin.
(4) The operation will automatically stop when
winding is completed. The amount of thread wound onto
the bobbin should be a maximum of 80% if the bobbin
capacity.