Sunstar Precision SWF/TA-WJ614-100, Руководство пользователя

Страница: 35 / 115

36
8.1.10) LOWER THREADING AND TENSION
ADJUSTMENT
1) Lower threading
– Use cotton yarn (80# ~ 120#) for your
lower thread.
– Lower threading into the bobbin case
Insert the bobbin into the bobbin case with
the thread coming out from the case slot.
Pull the thread through the thread guide.
– To prevent lower thread tangles, trim the
thread, leaving the length at 3-4cm, before
inserting the bobbin into the hook.
2) Lower thread tension adjustment
Adjust the tension of the lower thread using
the bolt on the tension spring of the bobbin
case. Turn the bolt clockwise to increase the
tension and counterclockwise to decrease the
tension.
Bobbin case
Lower thread holder
Bobbin
Slot
3~4cm
Screw
Tension spring
Thread guide
Make sure the bobbin rotates clockwise when you pull the thread holding the bobbin case in
your left hand.
CAUTION
To check if the lower thread tension is adequate, hold the thread from the bobbin and jiggle the
bobbin case lightly up and down. The thread should come out from its own weight and the
tension should be 25-35g.
CAUTION