Singer 45K Industrial Sewing Machine | Singer 45k User Manual | Singer 45k Parts

Singer 45k is an old model of an industrial sewing machine (flat bed or cylinder bed depending on model), the production lasted for about 50 years, approximately from 1895-1945. Some models were solved a little later around 1950. You can determine the time and place of production on the serial number of your Singer machine.
Due to its quality, the Singer 45k is still in use worldwide today, its robust construction and quality materials have had the greatest impact on its longevity. Singer 45k is mainly intended for difficult working conditions, below is a list of most models with their basic characteristics. I do not rule out the possibility of an error in the data because I also found most of the data on the Internet.
You can find the user manual, 
service manual and parts catalog at  this link.
Note: spm = Stitches Per Minute 

Pfaff Service Manual Adjustment | Vintage Pfaff Settings | Pfaff Parts Diagram | Pfaff sm

Pfaff Repair Manual
For many years, I have been repairing and servicing all types of home and industrial sewing machines. I also collected many service manuals, next below service manuals and catalogs of Pfaff sewing machine parts. 
Pfaff is my one of favorite model of sewing machines, I especially like vintage models.