The Needle Thread Tension System of the Singer Model 403A Sewing Machine

Donate to Andy Tube @ https://www.paypal.me/andytube SINGER MODEL 403A PLAYLIST:    • Regina, a SINGER SLANT-O-MATIC 403 SPECIAL   Tutorial for removing, repairing, and installing the Needle Thread Tension Unit and Tension Pin Releasing Lever on a Singer Model 403A Slant-o-Matic. A step-by-step how-to video with explanations of all the parts and how they work. How to Zero Out the tension unit. Do it yourself. MUSIC: Follow The Shadows by the 126ers