How to set the Stroke and Tension of the Check/Take-up Spring on a Singer Model 403A Sewing Machine

Описание к видео How to set the Stroke and Tension of the Check/Take-up Spring on a Singer Model 403A Sewing Machine

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TENSION UNIT VIDEO:    • The Needle Thread Tension System of t...  
How to set the stroke and tension of the check spring take-up spring on Singer model 403A. These adjustments affect stitch quality. Tutorial with close pictures. Also, Singer models 301,401A, 404, 500A, 503A, and many vintage Singer sewing machines.
The check spring is part of the needle thread tension unit.
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