How to ZERO-OUT Singer Models 401A and 500A Sewing Machines @andytubesewing1953
How to ZERO-OUT Singer Models 401A and 500A Sewing Machines  @andytubesewing1953
Uploaded February 2020 | Updated September 2026, 6 hours ago
Follow this tutorial for setting the width of the zigzag system. Formally called "setting the bight amplitude stop plates" or Zero-Out. If your zigzag width is too narrow or too wide this testing and resetting will fix that. Easy to do with just a screwdriver. Do it yourself instructions you can follow.
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How to set the zigzag width singer 401A, Singer 500A
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How to "ZERO-OUT" Singer Models 401A and 500A Sewing Machines

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