Original Singer instruction manual covering sewing machine models 191Y1, 191Y2 and 191Y3. Factory-issued English-language manual with numerous illustrated instructions for setup, threading, bobbin winding, stitch adjustment, maintenance, lubrication, and routine operation.

Includes clear black-and-white diagrams and instructional illustrations throughout, covering machine setup, threading paths, bobbin installation, tension adjustment, cabinet operation, controls, and general maintenance. An authentic Singer publication intended for owners, collectors, restorers, and users of these industrial sewing machine models.

Condition:

Original vintage manual in good, complete, usable condition with noticeable cosmetic wear from age and workshop use. Covers show age toning, multiple reading creases, scattered staining and spotting, edge wear, corner wear, and small chips along the front cover edge. Stapled binding remains intact. Interior pages are complete with light age toning, occasional creasing, and clear, fully legible illustrations. No major tears or significant writing observed. Please review all photographs carefully for condition details.