A bobbin is a small spool of thread that feeds the thread for the backside of the stitch. No sewing machine can sew without one. An incorrectly set up bobbin will create tangles in the thread. Bobbin setups vary from machine to machine. This guide shows the process for a Bernina 830, but the process will be similar for most sewing machines, except for those with drop-in bobbins. Refer to your sewing machine’s owner’s manual for specific directions on how to install a bobbin in your machine.
No parts required.
Slide the thread from the slit straight up along the groove and into the open hole on the bobbin case's side.
Keeping the bobbin in place, turn the bobbin case so that the back is facing you.
Use your fingernail to lift the lever on the back of the bobbin case. Hold the lever open.
Holding the bobbin case lever open, insert the bobbin case into the cavity under the presser foot.
Align the metal arm on the bobbin case so that it sits in the slot in the machine.
Release the bobbin case.
Close the door on the compartment below the presser foot.
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