Instruction Book - Manual - Sewing Machine PFAFF 90
It is generally quite difficult to find again or merely to find the Instruction Book of a old sewing machine; some are existing as PDF files, for free or costly, often stemming from old scanned handbooks and in fact not very practical with use.
That is why we republished the PFAFF 90 sewing machine Instruction Book by wanting it as close to the original document as possible; although the make-up is a little different and that the book has quite a different format.
We also wanted it more user-friendly by adding some pages intended for your personal notes.
Note that PFAFF 90 and 91 machines are working in a quite similar way; hence, the instruction book of the PFAFF 91 republished in French could also be useful for you.