Baby Lock Jubilant

• Never use bent needles. Transparent nylon uses a home-sewing topstitching needle; stretch and decorative work have separate source-listed choices.

Use recommended home sewing machine needles; the manual also names a home-sewing topstitching needle for transparent nylon and source-specific ball-point choices for stretch or decorative work.

• The table is a general guideline. Sew trial stitches on the actual layers and fabric. Do not apply one size to every fabric/thread combination.

The manual identifies an overall 65/9–100/16 home-sewing-needle span, but requires selection by the exact fabric/thread table: lightweight fabrics use 65/9–75/11; medium fabrics use 75/11–90/14; heavyweight rows use 90/14–100/16, with a 100/16 row for 12-ounce-or-heavier denim or canvas with source-specified thread; stretch fabrics use ball-point 75/11–90/14 needles.

• Use only recommended home sewing needles; replace bent, dull or damaged needles.

With the machine off, insert a straight needle with its flat side toward the rear until it touches the needle stopper, then securely tighten the clamp screw.

• Use only the supplied plastic bobbin or bobbins of the same type. Class wording does not by itself prove every marketed Class 15 bobbin is equivalent.

The manual identifies X52800-120 as a Class 15 type bobbin.

• Use only the supplied bobbin or same type X52800-120; other bobbins may damage the machine. No wider dimensional equivalence is asserted.

The specified same-type plastic bobbin is 11.5 mm (approximately 7/16 inch) high.

• Keep the bobbin held down and unwind in the documented direction; otherwise thread breakage or incorrect tension may result.

With the machine off, place the correctly wound bobbin in its case so thread unwinds left. Hold it down, guide thread around the needle-plate-cover tab and through the slit, and pull lightly so it enters the case tension spring.

• Use only the foot appropriate for the selected stitch and designed specifically for this machine. Check that it is secure before sewing; this does not establish a standardized shank class or universal fit.

Turn the machine off, raise the presser-foot lever, press the black rear button to release the foot, align the replacement foot's pin with the holder notch, and slowly lower the lever until the pin snaps into the notch.

• The manual names the walking foot and quilting foot as examples. This does not approve a third-party foot or adapter; securely tighten the holder screw.

For cleaning or a source-named foot that does not use the holder, turn the machine off, remove the foot, loosen the holder screw toward the back, and remove the holder. Reattach by aligning the holder notch with the screw and tightening toward you.