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7) Winding the lower thread
A. Press SELECT in the operation box to select .
B. Insert the bobbin into the bobbin winder driving shaft② of the bobbin winder base① attached onto the upper cover.
C. Place the bobbin winder lever③ tightly to the bobbin and step down on the pedal to start the machine.
D. After the bobbin winder lever separates from the bobbin, use the bobbin winder blade④ to cut the thread from the bobbin.
[Figure 52]
6) Tension control of the upper and lower threads
A. Tension adjustment of the upper thread
Turn the nuts③ and ④ of the main thread adjusting
device① and the auxiliary thread adjusting device②
in a clockwise direction for stronger tension of the
upper thread. Turn them counterclockwise for weaker
tension of the upper thread.
B. Tension adjustment of the lower thread
Turn the screw① of the bobbin case in a clockwise
direction to increase tension or in a counterclockwise
direction to reduce tension of the lower thread.
[Figure 50]
[Figure 51]
②
④
①
③
④
③
②
Bobbin
①
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