The Singer 4166 is a versatile mechanical sewing machine featuring 60 built-in stitches, automatic needle threader, adjustable stitch length and width, built-in buttonhole, free arm capability, drop-in bobbin system, and multiple presser feet. Powered by 120V AC, this machine is suitable for beginners and experienced sewers alike. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.
Key components: Mechanical sewing machine with 60 built-in stitches, automatic needle threader, free arm, drop-in bobbin system, and multiple presser feet.
| Feature | Description |
|---|---|
| Built-in Stitches | 60 stitches including utility, decorative, and stretch |
| Automatic Needle Threader | Easy threading with push-pull mechanism |
| Drop-in Bobbin | Top-loading bobbin system with clear cover |
| Free Arm | Removable extension table for cylindrical sewing |
| Stitch Length Control | Adjustable from 0-4mm |
| Stitch Width Control | Adjustable up to 5mm for zigzag stitches |
| Built-in Buttonhole | One-step automatic buttonhole |
| Presser Feet | Includes all-purpose, zipper, buttonhole, and button sewing feet |
| Reverse Stitch | Built-in reverse sewing function |
| Power Switch | On/off power control with built-in light |
Unpack and inspect all contents. Place on stable, flat surface.
WARNING! Keep fingers away from needle area during operation. Always turn off power when threading or changing accessories.
Power on machine; follow basic setup procedures.
CAUTION! Always start with needle in highest position. Keep work area well-lit and organized.
Main controls located on front and side of machine. Stitch Selection Dial: Turn to select from 60 built-in stitches. Stitch Length Dial: Adjust from 0-4mm. Stitch Width Dial: Adjust zigzag width up to 5mm.
Additional Controls: Reverse Stitch Button, Power Switch/Light, Bobbin Winder, Tension Dial, Presser Foot Lever, Hand Wheel.
Stitch Patterns: Basic, stretch, decorative stitches. Tension: Adjust thread tension for different fabrics. Bobbin Winding: Built-in bobbin winder with automatic stop.
60 built-in stitches organized by function and application.
Tip: Refer to stitch guide on machine for recommended settings and applications.
Step-by-step instructions for common sewing tasks.
WARNING! Never pull fabric while sewing. Let feed dogs move fabric automatically.
Regular maintenance ensures optimal performance and longevity.
CAUTION! Unplug machine before cleaning or maintenance. Use only Singer recommended oils.
| Accessory | Quantity | Purpose |
|---|---|---|
| All-Purpose Foot | 1 | General sewing |
| Zipper Foot | 1 | Installing zippers |
| Buttonhole Foot | 1 | Making buttonholes |
| Button Sewing Foot | 1 | Attaching buttons |
| Bobbins | 4 | Thread storage |
| Needles | 3 | Spare HAx1 needles |
| Seam Ripper | 1 | Removing stitches |
| Brush | 1 | Cleaning lint |
| Screwdriver | 1 | Needle plate removal |
UL Listed: Complies with UL safety standards. FCC Part 15: Class B digital device; complies with interference limits. Copyright © 2025 Singer; trademarks of Singer Licensing B.V. For technical support, visit www.singer.com or contact 1-800-4-SINGER. Made for household use.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Machine won't start | Power connection | Check power cord; ensure foot controller is plugged in; check power switch |
| Thread breaking | Tension/needle issues | Re-thread machine; check needle for damage; adjust tension |
| Uneven stitches | Threading/bobbin | Re-thread upper and lower threads; check bobbin installation |
| Fabric not feeding | Feed dogs | Clean feed dogs; check presser foot pressure; replace needle |
| Needle breaks | Wrong needle/bent needle | Replace needle; ensure correct needle type for fabric; check needle installation |
| Bobbin thread bunching | Bobbin threading | Re-wind bobbin; ensure bobbin inserted correctly; clean bobbin case |
Service: 1-800-4-SINGER; www.singer.com for authorized service centers