Antibacklash spring replacement

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How to replace the antibacklash spring.

Machine and sewing hook timing

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How to check the timing of the sewing hook.

Motor belt tension adjustment

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How to check the tension on your belt and adjust if necessary.

Check spring replacement and tension adjustment

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How to replace the check spring on your rotary check spring assembly.

TOWA Gauge

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Demonstration of how to use a TOWA bobbin case tension gauge.  This includes how to guide the thread through the gauge and the recommended tension settings.

Bobbin case tension adjustment

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Gammill maintenance video on bobbin case tension adjustment.