Singer Sewing Machine 4423 Manual

The Singer Sewing Machine 4423 is a heavy-duty mechanical sewing machine with 23 built-in stitches, one-step buttonhole, automatic needle threader, top drop-in bobbin system, adjustable stitch length and width, free arm capability, built-in accessory storage, and reverse sewing function. Powered by 110V AC, 60Hz. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation & Setup 3. First-Time Operation 4. Specifications 5. Controls and Settings 6. Stitch Selection 7. Threading & Bobbin 8. Maintenance & Cleaning 9. Accessories 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Heavy-duty metal frame, 23 built-in stitches, automatic needle threader, top drop-in bobbin, free arm, built-in accessory storage.

FeatureDescription
Built-in Stitches23 stitches including basic, stretch, and decorative
One-Step ButtonholeAutomatic buttonhole creation
Automatic Needle ThreaderEasy needle threading system
Top Drop-in BobbinEasy bobbin loading with clear cover
Free ArmFor sewing cuffs and sleeves
Stitch Length/WidthAdjustable for customization
Reverse SewingReinforce seams with reverse stitch
Built-in StorageAccessory compartment in free arm
Heavy-duty MotorPowerful motor for thick fabrics
Presser FeetIncludes multiple presser feet for different tasks

Installation & Setup

Unpack and inspect contents. Place on stable surface.

  1. Remove machine from packaging: Lift carefully from carrying case.
  2. Set up work area: Place on sturdy table with good lighting.
  3. Connect foot pedal: Plug into machine's foot control port.
  4. Plug into power: Connect to 110V AC outlet.
  5. Install needle: Loosen needle clamp screw, insert needle with flat side to back.
  6. Wind bobbin: Follow bobbin winding instructions.

WARNING! Keep fingers away from needle during operation. Unplug when not in use.

First-Time Operation

Power on machine; follow setup procedures.

  1. Thread machine: Follow threading path marked on machine.
  2. Use needle threader: Push lever down to automatically thread needle.
  3. Insert bobbin: Place bobbin in bobbin case with thread pulling counterclockwise.
  4. Select stitch: Turn stitch selection dial to desired stitch.
  5. Test sew: Use scrap fabric to test stitch and tension settings.
  6. Adjust tension: Use tension dial for balanced stitches.

CAUTION! Always turn hand wheel toward you. Never force the machine.

Specifications

Controls and Settings

Access controls via front panel and dials. Stitch Selection Dial: Choose from 23 stitches. Stitch Length Dial: Adjust from 0-4mm. Stitch Width Dial: Adjust from 0-5mm.

Main Controls: Power switch/light, stitch selection, stitch length, stitch width, reverse stitch button, bobbin winder, tension control.

Stitch Settings: Basic straight stitch (1-2mm length), zigzag stitch (width 0-5mm), stretch stitches (for knits), decorative stitches. Tension: Adjust for balanced stitches (usually 4-5 for medium weight fabrics).

Stitch Selection

23 built-in stitches for various fabrics and purposes.

  1. Straight Stitch: For basic sewing and seams
  2. Zigzag Stitch: For finishing edges and stretch fabrics
  3. Blind Hem Stitch: For invisible hems
  4. Stretch Stitches: For knit fabrics
  5. Decorative Stitches: For embellishments
  6. Buttonhole Stitch: One-step automatic buttonhole

Tip: Always test stitch on scrap fabric before sewing your project.

Threading & Bobbin

Proper threading ensures smooth operation.

  1. Raise presser foot and needle to highest position.
  2. Follow numbered threading path on machine.
  3. Use automatic needle threader: Push lever down and hook thread through.
  4. Wind bobbin: Place thread on spool pin, wrap around bobbin winder tension disc.
  5. Insert bobbin: Drop into bobbin case with thread pulling counterclockwise.
  6. Pull up bobbin thread: Hold needle thread, turn hand wheel to bring up bobbin thread.

WARNING! Ensure machine is turned off when threading needle.

Maintenance & Cleaning

Regular maintenance ensures optimal performance.

  1. Clean lint: Remove needle plate and clean bobbin area regularly.
  2. Oil machine: Use sewing machine oil on moving parts as directed.
  3. Change needle: Replace needle after 8-10 hours of sewing.
  4. Check belt: Ensure motor belt is properly tensioned.
  5. Store properly: Cover machine when not in use.

CAUTION! Unplug machine before cleaning or maintenance.

Accessories

Included accessories for various sewing tasks.

AccessoryPurpose
All-purpose FootGeneral sewing
Zipper FootInstalling zippers
Buttonhole FootCreating buttonholes
Button Sewing FootSewing on buttons
Seam RipperRemoving stitches
NeedlesAssorted sizes
BobbinsExtra bobbins
ScrewdriverFor adjustments
Lint BrushCleaning

Regulatory Information

UL Listed: Complies with UL safety standards. FCC Part 15: Class B digital device. Copyright © 2023 Singer Manufacturing Company. All rights reserved. For support, visit www.singer.com or contact 1-800-4-SINGER. Made for household use. 25-year limited warranty applies.

Troubleshooting

SymptomPossible CauseCorrective Action
Thread breakingIncorrect threading/tensionRe-thread machine; adjust tension; check for burrs on needle.
Skip stitchesWrong needle/damaged needleReplace needle; ensure correct needle for fabric.
Bobbin issuesImproper winding/insertionRewind bobbin; ensure proper insertion; clean bobbin area.
Machine jamsThread buildup/poor quality threadClean race hook area; use quality thread; remove jammed thread.
Uneven stitchesTension issuesAdjust upper and bobbin tension; re-thread completely.
No powerPower connection/foot pedalCheck power cord; ensure foot pedal is connected properly.

Service: 1-800-4-SINGER; www.singer.com

Singer Sewing Machine 4423 Manual © - All Rights Reserved 2025