Verify your sewing device for unfastened screws which brings about rattling and shifting of your machine and hampers the machine's clean operation. This is best carried out using eyeglass screwdrivers. However whilst tightening the screws, make positive you don't over-tighten the screws> Just maintain tightening till you discover a bit of resistance, when you have to cease. If you over-tighten your device screws, it will only strip the screws.

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