Sewing machine Service manual for BF and BU Mira, BF and BU Nova Offered is a HIGH QUALITY COPY of the book in PDF format, originally published by Necchi in 1954, Italy. This SERVICE MANUAL is designed to give you basic information, to understand any mechanical sequence you as a service man must understand and the function of the machine you are attempting to repair. It covers a lot of aspects on tune up and repairs of the mechanical sewing machines: Upper and Lower thread tension, presser bur adjustment, hook timing, needle position and clearance and many other issues. Please see attached photo pages with contents.In English Great Diagrams, 92 PAGES. File size 6.62 MB Your PDF file will be accessible for instant download shortly after payment is received.