Singer Heavy Duty Sewing Machine 44S Manual

The Singer Heavy Duty 44S is a robust sewing machine designed for heavy fabrics like denim, canvas, and leather. It features a powerful motor, 110 built-in stitches, automatic needle threader, adjustable presser foot pressure, top drop-in bobbin, and a heavy-duty metal frame. This manual covers safety, features, setup, operation, maintenance, and troubleshooting for optimal performance.

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

Features at a Glance

Key components: Heavy-duty metal frame, automatic needle threader, top drop-in bobbin system, LED lighting, adjustable presser foot pressure, free arm capability.

Feature	Description
Motor	High-power motor for heavy fabrics
Stitches	110 built-in stitches including utility, decorative, and stretch
Needle Threader	Automatic one-step needle threading
Bobbin System	Top drop-in, jam-resistant bobbin
Presser Foot Pressure	Adjustable for different fabric thicknesses
Free Arm	Removable accessory tray for sewing cuffs and sleeves
Stitch Length/Width	Adjustable via dial controls
LED Light	Bright LED work area illumination
Included Feet	All-purpose foot, zipper foot, buttonhole foot, button sewing foot
Speed Control	Variable speed slider

Machine Setup

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

Remove all packaging materials and foam supports.
Attach power cord to machine and plug into 120V AC outlet.
Install foot controller into designated port.
Attach accessory tray and free arm as needed.
Raise presser foot lever and install needle securely.

WARNING! Machine is heavy; lift with care. Ensure work area is clean and well-lit.

First-Time Operation

Power on machine; follow initial setup steps.

Thread machine: Follow threading guide printed on machine; use automatic needle threader.
Wind bobbin: Place thread on spool pin, wind bobbin using bobbin winding system.
Insert bobbin: Place bobbin in top drop-in compartment, pull thread through slot.
Select stitch: Turn stitch selection dial to desired pattern.
Test sew: Use scrap fabric to adjust tension and stitch settings.

CAUTION! Keep fingers away from needle during operation. Always turn power off when threading or changing accessories.

Specifications

Model: Singer Heavy Duty 44S
Stitches: 110 built-in stitches
Max Sewing Speed: 1100 stitches per minute
Needle Positions: Adjustable left/right
Presser Feet: 4 included (all-purpose, zipper, buttonhole, button sewing)
Bobbin: Class 15 transparent top drop-in
Lighting: LED bulb
Power Supply: 120V AC, 60Hz
Warranty: 25-year limited warranty

Controls and Functions

Access controls via front panel and dials. Front Panel: Power switch, stitch selection dial, stitch length/width dials, reverse stitch button, needle up/down button.

Additional Features: Automatic needle threader, bobbin winding disengage, drop feed dogs lever, free arm conversion.

Stitch Settings: Length (0-4mm), Width (0-7mm). Tension: Adjust upper thread tension dial (0-9). Presser Foot Pressure: Adjustable knob for thick/thin fabrics. Speed: Controlled by foot pedal pressure or speed slider.

Stitch Selection & Settings

Select from 110 stitches including straight, zigzag, decorative, and buttonhole.

Turn stitch selection dial to desired pattern number.
Adjust stitch length for fabric type (longer for basting, shorter for fine fabrics).
Adjust stitch width for zigzag and decorative stitches.
For buttonholes: Use automatic one-step buttonhole foot; machine measures button size automatically.
Use reverse stitch button to reinforce seam beginnings and ends.

Tip: Refer to stitch guide chart in manual for recommended settings for different fabrics.

Threading & Bobbin Winding

Proper threading is essential for optimal performance.

Raise presser foot and needle to highest position.
Place thread spool on spool pin; follow numbered threading path on machine.
Use automatic needle threader: Lower lever, hook thread, release lever to pull thread through needle eye.
Bobbin winding: Disengage needle mechanism, place thread on spool pin, wind bobbin evenly.
Insert bobbin: Drop bobbin into compartment with thread unwinding counterclockwise; pull thread through slot.

WARNING! Always turn power off during threading. Ensure bobbin is inserted correctly to prevent jamming.

Care & Maintenance

Unplug before cleaning. Regular maintenance ensures longevity.

Clean lint from bobbin area and feed dogs after each project.
Oil machine as per manual instructions (use only Singer recommended oil).
Replace needle regularly (after 8-10 hours of sewing).
Cover machine when not in use to prevent dust accumulation.

CAUTION! Do not use compressed air to clean; it can force lint into mechanisms. Never oil without unplugging machine.

Regulatory Information

UL Listed: Complies with UL safety standards. FCC Part 15: Class B digital device; complies with interference limits. Copyright © Singer Manufacturing Company. All trademarks are property of Singer. For support, visit www.singer.com or contact 1-800-4-SINGER.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Thread bunching underneath	Incorrect threading/bobbin	Re-thread top and bobbin; ensure bobbin inserted correctly.
Needle breaks	Wrong needle type/bent needle	Use correct needle for fabric; replace bent needle; ensure needle is fully inserted.
Machine won't start	Power connection/foot pedal	Check power cord; ensure foot pedal is plugged in; check power switch.
Uneven stitches	Tension issues	Adjust upper tension; re-thread; clean tension discs.
Fabric not feeding	Feed dogs lowered/thread jam	Raise feed dogs; clear thread jam from bobbin area.

Reset: Turn power off, unplug for 60 seconds, then restart.

Service: 1-800-4-SINGER; www.singer.com for authorized service centers.