The Singer 1725 is a classic straight-stitch sewing machine featuring a powerful motor, built-in light, reverse stitching capability, adjustable stitch length, drop-in bobbin system, built-in thread cutter, and easy threading system. This manual covers operation, maintenance, troubleshooting, and safety guidelines for optimal performance.
Key components: Motor housing, stitch length dial, reverse stitch lever, presser foot, feed dogs, bobbin case, built-in light, power pedal.
| Feature | Description |
|---|---|
| Stitch length dial | Adjusts stitch length from 0-4mm |
| Reverse stitch lever | Secures stitches at beginning and end |
| Built-in light | Illuminates sewing area |
| Drop-in bobbin | Easy loading and monitoring |
| Thread tension dial | Adjusts upper thread tension |
| Presser foot pressure | Adjustable for different fabrics |
| Power pedal | Controls sewing speed |
| Built-in thread cutter | Convenient thread trimming |
| Carry handle | For easy transport |
| Accessory storage | Built-in compartment for feet and tools |
Unpack and inspect all components. Place on stable surface at comfortable height.
WARNING! Keep fingers away from needle area during operation. Always unplug when not in use.
Power on machine; test stitch on scrap fabric first.
CAUTION! Always turn handwheel toward you only. Never force the machine.
Main controls located on right side of machine body.
Stitch Length Dial: Turn clockwise for longer stitches, counter-clockwise for shorter. Reverse Stitch Lever: Press and hold for reverse stitching. Thread Tension Dial: Higher numbers for tighter tension (4-5 for medium weight fabrics). Presser Foot Lever: Raises and lowers presser foot. Handwheel: Manual control, turn toward you only.
Follow numbered guides from spool to needle.
Tip: Always raise presser foot when threading to open tension discs.
Proper settings for different fabric types.
WARNING! Always use correct needle type for fabric. Change needle every 8 hours of sewing.
Regular maintenance ensures optimal performance.
CAUTION! Unplug machine before cleaning or maintenance. Use only sewing machine oil.
Always follow safety precautions when operating.
UL Listed: Complies with UL Standard 1270. FCC Part 15: Class B digital device. Copyright © Singer Manufacturing Company. All rights reserved. For technical support, visit www.singer.com or contact 1-800-4-SINGER. Made for household use.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Thread breaking | Incorrect threading/tension | Re-thread completely; adjust tension; check for burrs on needle |
| Skip stitches | Wrong needle/damaged needle | Replace needle; ensure correct type for fabric |
| Machine won't run | Power/pedal issue | Check power cord; ensure pedal is plugged in; check outlet |
| Bobbin thread bunching | Incorrect bobbin threading | Remove and re-thread bobbin; check bobbin case |
| Uneven stitches | Tension issues | Adjust upper and bobbin tension; clean tension discs |
| Needle breaks | Bent needle/wrong installation | Install new needle correctly; don't pull fabric |
Service: 1-800-4-SINGER; www.singer.com