If you have a Bernina rotary hook sewing machine, like the 200, 730, 185, 180, or the 1630, there may come a time when your machine makes a loud rattling sound. This can be caused by a worn out bobbin case stopper, and even after a fresh cleaning and oiling of the machine, the annoying rattling sound may persist. If this is the case, it’s likely that you will need a new bobbin case stopper.
The good news is that these bobbin case stoppers, shown in the image above, are not very expensive. You might even request that you have a new one installed during your next service, just so that you can be assured that the common rattling sound doesn’t start before your machine is due for its next service.
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