Preparation
Fig. 11 - 05
7
4 cm
11 - 4
3
4
6
5
2
1
● Insert bobbin 1 into bobbin case 2.
● Pass the thread through slot 3 and under spring 4.
● Then pass the thread into slot 5.
● Pass the thread out of hole 6 again.
● Adjust the thread tension by turning screw 7.
● Use the enclosed tool for this process.
The bobbin thread should be able to be pulled easily and evenly out of the
bobbin case 2 for sewing purl buttonholes. Therefore, turn screw 7 so that the
bobbin case 2, with a full bobbin 1, slides slowly downwards when hanging
freely from the thread.
11.04 Threading the bobbin case, adjusting the thread tension
on purlbuttonholes
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