singer sewing machine model 4423 manual

The Singer 4423 is a heavy-duty sewing machine designed for strength and durability. It features a powerful motor, a variety of built-in stitches, a one-step buttonhole, and a metal frame construction for stability. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Heavy-duty metal frame, built-in stitches, one-step buttonholer, drop-in bobbin system, adjustable stitch length and width, free arm.

Installation & Setup

Unpack and inspect contents. Place on a stable, flat surface.

1. Remove all packaging materials and foam from the machine.
2. Attach the foot control plug to the machine's port.
3. Plug the power cord into a standard 120V AC outlet.
4. Install the needle: Loosen the needle clamp screw, insert needle with flat side to the back, tighten screw.
5. Attach the presser foot: Raise the presser foot lever, snap the foot into place.

WARNING! Keep fingers away from the needle area during setup and operation. Ensure the machine is unplugged when threading or changing accessories.

First-Time Operation

Power on the machine; follow steps for threading and bobbin winding.

1. Wind the bobbin: Place thread on spool pin, guide through bobbin winding tension disc, place bobbin on winder, push to engage, press foot control.
2. Insert bobbin: Open the bobbin cover, drop in the bobbin with thread unwinding counter-clockwise, pull thread into the slot.
3. Thread the upper thread: Raise presser foot and needle to highest position. Follow numbered threading path on machine, ending by using the automatic needle threader.
4. Pull up the bobbin thread: Hold the upper thread tail, turn handwheel toward you to lower and raise the needle, pull to bring up bobbin thread loop.
5. Test stitch: Place fabric under presser foot, lower foot, and gently press foot control.

CAUTION! Always turn the handwheel toward you (counter-clockwise) only. Never force the machine.

Specifications

• Model: Singer 4423 Heavy Duty.
• Stitches: 23 Built-in stitches.
• Buttonholes: 1 One-step automatic.
• Speed: Up to 1,100 stitches per minute.
• Frame: Heavy-duty metal interior frame.
• Bobbin: Class 15 transparent, drop-in style.
• Needle: Singer system 130/705H needles.
• Presser Feet: Includes All-Purpose Foot, Zipper Foot, Buttonhole Foot, Button Sewing Foot.
• Power Source: 120V AC, 60Hz.
• Warranty: 25-year limited warranty.

Controls and Functions

Access controls via dials and levers on the front and side of the machine.

Front Panel: Stitch Selector Dial, Stitch Length Dial, Stitch Width Dial, Reverse Stitch Lever, Bobbin Winder Spindle/Stop.

Side/Body: Handwheel, Power Switch, Foot Control Jack, Presser Foot Lever, Thread Tension Dial, Needle Clamp Screw, Drop-in Bobbin Cover.

Basic Adjustments: Stitch Length (0-4 mm), Stitch Width (0-5 mm for zigzag), Thread Tension (0-9, 4 is normal), Presser Foot Pressure Dial.

Stitch Selection & Settings

Use the Stitch Selector Dial to choose from 23 stitches.

1. Turn the dial to the desired stitch number (chart is on the machine or in manual).
2. Adjust stitch length for longer/shorter stitches (higher number = longer).
3. For zigzag and decorative stitches, adjust stitch width (higher number = wider).
4. For buttonholes: Attach buttonhole foot, select buttonhole stitch, place fabric under foot, lower lever at back of foot, press foot control—machine sews automatically.
5. Use reverse lever at the beginning and end of seams to lock stitches.

Tip: Test stitch settings on a scrap of your project fabric first.

Threading & Bobbin Winding

Proper threading is essential for good stitch quality.

1. Bobbin Winding: Disengage clutch by pulling handwheel outward. Place thread on spool pin, guide through thread guide and tension disc. Place bobbin on winder, push to right. Hold thread end, press foot control. Stop when bobbin is full; push winder to left.
2. Upper Threading: Raise presser foot. Follow numbered path: from spool pin, down to tension discs, up to take-up lever, down to needle. Use automatic needle threader: lower lever, hook thread, release lever to pull thread through eye.
3. Drawing Up Bobbin Thread: Hold upper thread tail, turn handwheel toward you to lower and raise needle. Pull upper thread to bring bobbin thread up through needle plate.

WARNING! Ensure presser foot is raised when threading to open tension discs.

Maintenance & Cleaning

Unplug machine before any maintenance.

1. Cleaning: Remove needle plate screws, lift off plate. Use small brush to remove lint from bobbin area and feed dogs. Wipe metal parts with soft, dry cloth.
2. Oiling: Apply 1-2 drops of Singer sewing machine oil to points indicated in manual (e.g., bobbin hook race) after every 8-10 hours of use. Run machine on scrap fabric to distribute oil.
3. Needle Replacement: Replace needle regularly (after every project or 8 hours of sewing). Use Singer 130/705H needles size appropriate for fabric.
4. Storage: Cover machine when not in use to prevent dust accumulation.

CAUTION! Use only sewing machine oil. Do not use household oils. Never spray cleaners directly onto machine.

Regulatory Information

FCC Compliance: This device complies with Part 15 of the FCC Rules. Copyright © Singer Manufacturing Company. All trademarks are property of Singer. For support, visit www.singer.com or contact Singer Customer Service at 1-800-4-SINGER.

Troubleshooting

Reset: Unplug machine for 5 minutes to reset electronic components if experiencing erratic behavior.

Service: For repairs not covered in manual, contact authorized Singer service center.