The Singer 221, also known as the "Featherweight," is a classic portable straight-stitch sewing machine renowned for its reliability, precision, and lightweight aluminum construction. Introduced in the 1930s, it features a powerful motor, reverse stitching capability, adjustable stitch length, built-in light, and comes with a set of standard presser feet and bobbins. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.
Key components: Aluminum body, Rotary Hook Bobbin System, Built-in Light, Reverse Lever, Stitch Length Dial, Tension Disc Assembly, Presser Foot Lifter.
| Feature | Description |
|---|---|
| Rotary Hook Bobbin System | For smooth, consistent bobbin thread delivery |
| Built-in Light | Illuminates the needle area for precise sewing |
| Reverse Lever | Engages reverse stitching for securing seams |
| Stitch Length Dial | Adjusts stitch length from 0 to 4 mm |
| Tension Disc Assembly | Controls upper thread tension for balanced stitches |
| Presser Foot Lifter | Raises and lowers the presser foot |
| Power Pedal | Controls sewing speed; connects to motor |
| Carrying Case | Portable wooden or vinyl case with accessories |
| Standard Presser Feet | Includes zigzag, zipper, and buttonhole feet (varies by model year) |
| Bobbin Case | Front-loading, removable metal bobbin case |
Unpack machine and inspect contents. Place on stable, flat surface.
WARNING! Keep fingers away from needle when machine is plugged in. Ensure workspace is clean and dry.
Power on machine; test stitch on scrap fabric.
CAUTION! Always turn handwheel toward you (counter-clockwise) to avoid timing issues.
Access controls via dials and levers on machine body. Front Panel: Stitch Length Dial, Reverse Lever, Light Switch, Handwheel.
Key Adjustments: Stitch Length (0 for darning, 4 for basting), Thread Tension (adjust dial for balanced stitches), Presser Foot Pressure (fixed on most 221 models).
Bobbin Tension: Adjust screw on bobbin case (clockwise increases, counter-clockwise decreases). Needle Position: Centered; cannot be shifted. Reverse: Hold lever for back-tacking.
Upper Threading: Follow path from spool pin through tension discs to needle. Bobbin Winding: Disengage clutch by pushing handwheel inward.
Tip: Use quality thread (polyester or cotton) and clean lint from bobbin area regularly.
Straight stitch only; ideal for piecing, quilting, seams.
WARNING! Do not pull fabric; let feed dogs move it. Avoid sewing over pins.
Unplug before maintenance. Clean lint after each project; oil monthly with sewing machine oil.
CAUTION! Use only sewing machine oil; never use household oils. Store in case when not in use.
UL Listed: Complies with safety standards for household sewing machines. Copyright © Singer Manufacturing Company (now Singer Sewing Company). Patents issued from 1933-1950s. For support, visit www.singer.com or contact 1-800-4-SINGER. Serial number located on bed of machine; used for dating and parts identification.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Thread bunching underneath | Incorrect threading/tension | Re-thread upper and bobbin; adjust tension; clean bobbin area. |
| Needle breaks | Wrong needle/bent needle | Replace with 15x1 needle; ensure inserted fully; avoid pulling fabric. |
| Machine won't run | Power/pedal issue | Check plug and outlet; ensure pedal cord connected; inspect fuse. |
| Uneven stitches | Dirty/tension issues | Clean feed dogs and bobbin area; re-thread; adjust tension dial. |
| Bobbin thread not catching | Timing off/threading error | Re-thread bobbin; ensure bobbin inserted correctly; may require professional timing adjustment. |
| Light not working | Bulb burnt out | Replace with 15-watt bulb (unplug first). |
Reset: Unplug, clean and oil, re-thread completely.
Service: 1-800-4-SINGER; www.singer.com; authorized service centers only.