Table of Contents
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Threading the bobbin
–
Insert a full bobbin into the bobbin case top, the bobbin must
thereby turn counterclockwise when the underthread is pulled off.
–
Guide the underthread through slot 6 under spring 7.
–
Depending on the desired buttonhole, the underthread must be
guided through slot 9 for a raised-form buttonhole (more thread is
pulled forward over the hook back) or through slot 10 for a
flat-form buttonhole (less thread).
–
Cut off the thusly threaded underthread at knife 11.
Setting the underthread tension
–
Set the underthread tension by turning screw 12 so that the bobbin
case slowly lowers under its own weight with the thread end held
tight.
9
10
Inserting the bobbin case top
–
Place the bobbin case top with bobbin on the bobbin case bottom
taking care that bracket 5 can be heard to catch.
5
1
11
6
12
7
11
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