Victoria 537 Manual [patched] →

Pull both threads together and place them backward under the presser foot. 3. Understanding the Controls and Dials

Push the bobbin onto the bobbin winder spindle, aligning the small pin on the spindle with the notch in the bobbin. victoria 537 manual

Insert the wound bobbin into the metal bobbin case, ensuring the thread unwinds clockwise. Pull both threads together and place them backward

Mechanical foot control pedal with an internal electric motor. Insert the wound bobbin into the metal bobbin

Raise the presser foot lifter (this opens the tension discs).

The Victoria 537 is almost certainly a mechanical machine, offering a range of utility and decorative stitches. It would have a stitch selector dial that allows you to choose from a variety of patterns, including straight stitch, zigzag stitch, and possibly blind hem or stretch stitches.

Victoria 537 is a vintage sewing machine, and finding a physical "paper" manual for it typically involves searching specialized vintage machine archives or collector marketplaces.