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Thread Tension  (Double Chain)
 Adjusting the thread tension may be required
     depending on the type of fabric and thread
     being used.
     To begin with, select the stitch pattern key
     and sew a test piece.
     If the tension balance on the test piece is not
     satisfactory, you can adjust the thread ten-
     sion manually, as follows;
Correct tension
1 Wrong side of fabric
2 Right side of fabric
3 Left needle thread
4 Double chain looper thread
5 Left needle thread tension
6 Double chain looper thread tension
Wrong tension
     The illustration shows sewing results when the
     left needle thread tension is too loose.
Remedy:
     Tighten left needle thread tension.
1
1
4
2
3
4
2
3
6
5
6
5