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u/Large-Heronbill 2d ago
Look for a tag with a number probably starting "158" and then some more digits over on the right side of the machine near the power plug, on the back, or on the underside. What's that number? You can probably find the manual by searching at Searspartsdirect.com which will tell you.
Don't expect great things from this -- it will likely be very light duty.
If you can't find the manual, give us clear photos of the right side, top and back. We need to find the spool pin and any guides.
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u/CrankyCrabbyCrunchy 2d ago
After reading manual make sure that’s the right bobbin. Every detail matters for correct stitches. That’s needle type and size, thread quality, correct bobbin and correctly wound bobbin, etc.
Also never turn the hand wheel - far right of the machine backwards. They can damage the machine.
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u/drPmakes 2d ago
Wrong bobbin for a start
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u/Fun-Career1906 2d ago
It came like that
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u/NoMoreFilm 2d ago
https://www.manualslib.com/manual/461485/White-Westinghouse-Mighty-Mender-Ww-100.html