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Bobbin winding
Check
When winding up the lower thread onto the bobbin it should wind it 80 percent full and fi lled evenly.
Adjustment
1. Place an empty bobbin on spindle and push it to the right.
2. Lead thread from spool to back side of thread guide.
3. Wind thread clockwise around bobbin winder tension disc.
4. Turn on the power switch and step on the foot controller to run the machine.
5. Observe the shape of bobbin winding:
When the lower part of bobbin winding is thicker, adjust the screw (a) counter clockwise.
When the upper part of bobbin is thicker, adjust the screw (a) clockwise.
6. Observe the intensity:
If bobbin is less than 80 percent full, loosen the screw (b), adjust bobbin winder bracket shaft (B) clockwise.
If bobbin is over 80 percent full, loosen the screw (b), adjust bobbin winder bracket shaft (B) counter-clockwise.
7. Tighten the scew (b).
8. Bobbin should be 80 percent full and evenly fi lled after adjustment.
9. Push bobbin to left after adjustment before sewing.
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