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How to adjust bobbin tension bernina 150
On the side of the bobbin case is a half moon shaped curved spring with a screw through it securing it to the bobbin case
take the small yellow or red screwdriver that came with your machine and turn the screw clock wise to tighten and counter clockwise to loosen. Correct tension is achieved by inserting a full bobbin of thread, into bobbin case, remove the half moon shaped shuttle from machine, put the bobbin case on to the shuttle, now hold just thread and with a youo motion shake the above and the shuttle and bobbin case should slide down the thread about 12 to 24 inches for correct tension
on Feb 25, 2015
Why is it that as soon as I plug in the foot pedal the machine starts?
The foot control is a simple device with a resistance value that, as the foot control is depressed, the value diminishes and the machine runs faster. The cause of an immediate run condition will be the result of the following:
1. The cable or plug has been damaged so as to connect both wires to create a maximum run state. 2. Most common to the foot control itself is that the actuator for the slide resistor is broken and stuck in the max run spot as well as having been disconnected from the on/off micro switch. 3. The foot control has been taken apart and improperly assembled. SewTechnical Home
on Nov 15, 2014
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