I recently acquired an Adler 374-140R Industrial Sewing machine. According to the seller the machine was used in the production of car seat covers. The machine has been modified, it no longer has a computer system or air compressor and the new motor is a Retco clutch motor. The company website does not offer any manual for this particular machine. However, they do provide similar manuals. Having an orginal manual would be helpful as I don't want to miss an areas that may require oiling or oil any area that does not require oiling. My concern is basicly maintainting the proper oiling. I understand some motors require luberacation as well but I am unable to locate any info on the Retco motor. Feedback would be great!