Singer 31-15 Industrial Sewing Machine Manual.
Examples include:
Threading the machine.
Removing and winding the bobbin.
Upper and lower thread tension settings.
Time the needle with the shuttle.
Needles and Thread.
Operating the machine.
Oiling machine.
Instructions for adjusters and mechanics.
Adjust the transmitter starting lever.
Parts diagrams.
22 page manual.
Singer 31-15 Industrial Sewing Machine Manual
Operating and adjustment manual.
