Top Tension - Bernina 1030 Service Manual

Top Tension

Access to adjust the top tension is through the take–up slot on
the front of the machine.
The 2.5mm Allen key should be cut off with a saw so less than
½" is left on the small side.
After your bobbin tension is set, stitch
with your machine and check the result. Take a 2.5mm Allen key
that has been cut off by ½ on the short end. This will allow the
Allen key to fit into the top tension area. Turn the screw
clockwise for more tension and counterclockwise for less. Stitch
with the machine to test after each adjustment. Only turn the
screw ¼ turn at a time. Make sure the top tension dial is set to
the red line before you start the adjustment.
You are trying to get the knot to
meet in the center of the fabric.
If the bobbin tension is set right you can achieve very good
tension results. You should use the same thread in the top and
bobbin when setting the tensions. Always use medium weight,
light color thread and medium fabric.
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