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▶ Turn off the power when adjusting the lower thread tension.
▶
▶ When using the clutch motor, be aware that the motor will continue to rotate for a while after
6) Winding and adjusting lower thread
A. Winding lower thread
a) Pass the thread thru the hole① from the rear to the
frontal side of the tension adjusting dish②.
b) Bring the thread to the bobbin③ and wind it
clockwise 5 to 6 times from the bottom.
c) Push the lever④ so that the pulley⑤ touches the V-
belt and run the machine.
d) The pulley⑤ automatically is separated from the V-
belt when the lower thread is winded in the bobbin.
e) The adequate amount of the pulled-out lower thread
is about 80%. (Refer to Figure 24)
B. Adjustment of winding lower thread
a) In case that the lower thread is winded irregular, loosen the bolt⑥ and adjust by moving it sideways, and tight it again.
b) The amount of winded lower thread becomes larger when you turn adjusting screw⑦ clockwise, and it becomes
smaller in case of turning it counterclockwise.
c) The tension of lower thread that winded in the bobbin can be adjusted by turning the nut⑧: it increases with
clockwise turning and it decreases when you turn counterclockwise.
7) Inserting and removing lower thread and adjusting tension
A. Insert the bobbin into the bobbin case. Later, insert the thread into the thread groove③ and place it under the spring④ of
thread adjusting plate. The tension of the lower thread becomes larger when you turn clockwise the tension adjustment
screw⑤ and becomes smaller when you turn in counterclockwise. When hold the end of thread, make sure that the
bobbin case⑥ should drop by gravity in order to adjust the lower thread tension.
B. Inserting and removing the bobbin case
Insert into the hook by grabbing the bobbin case handle①. Pull out the handle① when you remove the bobbin. (The
bobbin② removes itself when you release the handle.)
If the operator mistakenly steps down on the pedal while switched on, the machine will start
automatically and can cause physical injuries.
the power is switched off. Start to work only after the motor has come to a complete stop.
Caution
[Figure 24]
Weaker
Stronger
[Figure 25]
17
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