Singer 401 SLANT-O-MATIC Model Sewing Machine Manual.
This manual is available here- Singer sewing machine manual
Threading bobbin case.
Fabric, needle, thread chart.
Stitch length regulator.
Adjusting thread tension.
Fabric pressure regulator.
Primary pattern selector.
Special pattern disks.
Decorative stitch patterns.
Replacing light bulb.
Cleaning and oiling your machine.
112 page instruction manual.
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