Singer HD44S Heavy Duty Manual

The Singer HD44S is a heavy-duty sewing machine designed for tackling tough fabrics like denim, leather, canvas, and multiple layers. It features a powerful motor, metal interior frame, adjustable presser foot pressure, built-in stitches, automatic needle threader, drop feed for free-motion sewing, and a variety of included accessories. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Unpacking & Setup 3. First-Time Operation 4. Specifications 5. Controls and Functions 6. Stitch Selection & Settings 8. Maintenance & Cleaning 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Heavy-duty metal frame, Powerful motor, Automatic needle threader, Adjustable presser foot pressure, Drop feed lever, Built-in LED light, Accessory storage.

FeatureDescription
MotorHigh-torque, powerful motor for heavy fabrics
FrameFull metal interior frame for stability and reduced vibration
StitchesBuilt-in utility stitches (straight, zigzag, blind hem, etc.)
Needle ThreaderAutomatic, easy-threading system
Presser Foot PressureAdjustable dial for different fabric thicknesses
Drop FeedLever to lower feed dogs for free-motion sewing/darning
LED LightBright light over needle area
Bobbin SystemTop drop-in, class 15 transparent bobbin
Stitch Length/WidthAdjustable dials
Included FeetAll-purpose foot, zipper foot, buttonhole foot, etc.

Unpacking & Setup

Unpack all contents carefully. Place on a sturdy, flat table.

  1. Remove machine from box: Lift by the carrying handle, not the accessory box.
  2. Install foot controller: Plug into machine port and electrical outlet.
  3. Install needle: Use included screwdriver; flat side faces back.
  4. Wind bobbin: Follow path diagram; place wound bobbin in drop-in case.
  5. Thread machine: Follow numbered path; use automatic needle threader.

WARNING! Machine is heavy; use care when lifting. Ensure work area is well-lit and stable.

First-Time Operation

Plug in power cord. Turn power switch ON.

  1. Select stitch: Turn stitch selection dial to desired pattern (e.g., straight stitch).
  2. Adjust settings: Set stitch length and width as needed.
  3. Test on scrap fabric: Practice controlling speed with foot pedal.
  4. Adjust tension: For balanced stitches; refer to manual guide.
  5. Engage drop feed: For free-motion work like darning or quilting.

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

Specifications

Controls and Functions

Main Controls: Power switch/light, Stitch selection dial, Stitch length dial, Stitch width dial, Reverse stitch lever, Bobbin winder spindle, Handwheel.

Special Functions: Automatic needle threader (lever), Presser foot pressure dial, Drop feed lever, Free arm (accessory tray removable).

Stitch Settings: Length (0-4 mm), Width (0-5 mm). Tension: Adjust upper thread tension dial (2-6 for most fabrics). Needle: Use Singer needles size 14/90 or 16/100 for heavy fabrics.

Stitch Selection & Settings

Refer to stitch chart on machine. Common uses:

  1. Straight Stitch (1-3): General sewing, seams.
  2. Zigzag Stitch (4-6): Overcasting, stretch fabrics.
  3. Blind Hem Stitch (7): Nearly invisible hems.
  4. Decorative Stitches (8-23): For embellishment.

Tip: Always test stitch and tension on a fabric scrap before starting your project.

Maintenance & Cleaning

Unplug machine before any maintenance.

  1. Cleaning: Remove needle plate and bobbin case. Use small brush to remove lint.
  2. Oiling: Apply 1-2 drops of Singer sewing machine oil to designated points (see diagram) periodically.
  3. Needle: Change regularly, especially when dull or after hitting a pin.
  4. Storage: Cover machine when not in use to prevent dust accumulation.

WARNING! Do not use compressed air to clean; it can force lint deeper. Use only recommended oil.

Regulatory Information

FCC Compliance: This device complies with Part 15 of the FCC Rules. Copyright © Singer Sewing Company. All rights reserved. For support, visit www.singer.com or contact 1-800-4-SINGER.

Troubleshooting

SymptomPossible CauseCorrective Action
Thread bunching underneathIncorrect threading/bobbinRe-thread top and bobbin; ensure bobbin is inserted correctly.
Needle breaksWrong needle/bent needle/fabric pullUse correct needle type/size; don't pull fabric; insert needle fully.
Machine skips stitchesDull needle/incorrect needle/threadChange needle; use quality thread appropriate for fabric.
Machine is noisyLint/dust/lack of oilClean and oil machine as per manual.
Fabric not feedingFeed dogs lowered/stitch length set to 0Raise feed dogs (drop feed lever up); adjust stitch length.

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

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

Singer HD44S Heavy Duty Manual © - All Rights Reserved 2025