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6.4) Lower Thread Placement
1) Insert the bobbin into the bobbin case as in the figure.
Looking from the back of the bobbin case, the bobbin
should be inserted in the way that it can be spun
clockwise.
2) Pass the lower thread through the slot on the bobbin
case and insert the thread into the thread hole.
3) Make the lower thread protrude 25mm from the thread
hole.
6.5) Bobbin Placement and Removal
Hold the bobbin case handle ① and push the bobbin case
until click sound is heard.
6.6) Upper and Lower Thread Tension
Adjustment
1) Upper Thread Tension Adjustment
Turn the tension adjusting nuts ③, ④ of the main
thread adjusting device ① and the sub thread adjusting
device ② clockwise to strengthen the upper thread
tension, and vice versa.
Bobbin case
bobbin
thread hole
①
②
④
①
③
If the machine operates with the bobbin case not fully inserted, thread entanglement or bobbin
case ejection might result.
Caution
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