Singer Sewing Machine 404 Manual

The Singer Sewing Machine 404 is a classic vintage sewing machine featuring a straight stitch mechanism, built-in bobbin winder, reverse stitching capability, adjustable stitch length, tension control, and drop feed for free-motion sewing. Powered by foot pedal with 120V AC motor. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Metal body construction, built-in light, bobbin winder, reverse stitch lever, stitch length dial, tension control, presser foot lifter.

Installation & Setup

Unpack and inspect contents. Place on stable sewing table.

1. Position machine: Place on sturdy table with adequate workspace.
2. Connect foot pedal: Plug into machine and wall outlet.
3. Install needle: Loosen needle clamp, insert needle with flat side to back.
4. Oil machine: Apply sewing machine oil to designated points before first use.

WARNING! Machine is heavy; lift with care to avoid injury. Ensure stable surface placement.

First-Time Operation

Power on machine; follow threading sequence.

1. Thread upper thread: Follow numbered guides from spool to needle.
2. Wind bobbin: Place empty bobbin on winder, thread through tension disk.
3. Insert bobbin: Drop bobbin into case with thread pulling counterclockwise.
4. Test stitches: Use scrap fabric to adjust tension and stitch length.

CAUTION! Keep fingers away from moving needle. Always unplug when not in use.

Specifications

• Machine Type: Straight stitch mechanical
• Stitch Length: 0-4mm adjustable
• Stitch Width: Fixed straight stitch
• Bobbin Type: Class 66 metal bobbins
• Needle System: 15x1 domestic needles
• Presser Foot Lift: Adjustable height
• Motor Power: 120V AC, 60Hz
• Weight: Approximately 25 lbs
• Dimensions: Standard sewing machine size

Controls and Settings

Main controls located on machine body: Stitch length dial, reverse lever, tension dial, presser foot lever.

Stitch Length Dial: 0-4mm adjustment (0 for bobbin winding). Reverse Lever: Hold down for backstitching. Tension Dial: 0-9 adjustment (4-6 for normal sewing). Presser Foot Lever: Raises and lowers presser foot.

Additional features: Built-in light switch, bobbin winder disengage, drop feed lever for free motion sewing.

Threading the Machine

Upper threading: Follow numbered guides from spool pin to needle.

1. Place thread spool on spool pin.
2. Pull thread through first thread guide.
3. Pass thread through tension discs.
4. Thread through take-up lever.
5. Follow remaining guides to needle.
6. Thread needle from front to back.

Tip: Always raise presser foot when threading to open tension discs.

Basic Sewing Operations

Straight stitch sewing with adjustable length and reverse capability.

1. Position fabric: Lower presser foot onto fabric.
2. Start sewing: Gently press foot pedal to begin stitching.
3. Reverse stitching: Hold reverse lever to secure seam ends.
4. Adjust speed: Control stitching speed with foot pedal pressure.
5. Guide fabric: Let machine feed fabric; do not pull or push.
6. Finish sewing: Raise needle to highest position before removing fabric.

WARNING! Never sew over pins. Keep hands clear of moving parts.

Maintenance & Cleaning

Regular maintenance ensures optimal performance and longevity.

1. Daily: Brush out lint from bobbin area and feed dogs.
2. Weekly: Oil machine according to lubrication points diagram.
3. Monthly: Clean tension discs with folded fabric strip.
4. As needed: Replace needle after 8-10 hours of sewing.

CAUTION! Always unplug machine before cleaning or maintenance.

Regulatory Information

Singer 404 manufactured by The Singer Company. UL listed electrical components. For technical support or service, contact authorized Singer service centers. Replacement parts available through Singer dealers.

Troubleshooting

Service: Contact authorized Singer service center for mechanical repairs.