Setting up
34
9.03 Threading the bobbin case / adjusting the bobbin thread tension
Insert the bobbin ● 1 in the bobbin case.
First guide the thread into slot ● 3 and under spring 4.
Then guide the thread into slot ● 5.
For purl buttonholes:
Push thread through opening ● 6.
For fl at buttonholes:
Push thread through opening ● 7.
Trim thread on thread knife ● 8.
Adjust the thread tension by turning screw ● 9.
To do so use the tools supplied. ●
When sewing fl at buttonholes, the tension of the bobbin thread must be so
high, that the bobbin thread is interlooped on the bottom side of the material.
Fig. 9 - 03
2
1
3
4
5
6
7
8
9
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