Manual for Singer Sewing Machine HD6600C

The Singer HD6600C is a heavy-duty sewing machine designed for home use, featuring a powerful motor, 110 built-in stitches, automatic needle threader, adjustable presser foot pressure, top drop-in bobbin system, automatic tension control, built-in needle plate thread guide, and free arm capability. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

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

Features at a Glance

Key components: Heavy-duty metal frame, LCD display, stitch selection dial, automatic needle threader, top drop-in bobbin, free arm, accessory storage, and foot pedal.

Feature	Description
Built-in Stitches	110 stitches including utility, decorative, and stretch stitches
Automatic Needle Threader	Easy needle threading with push-pull lever
Top Drop-in Bobbin	Easy bobbin insertion with clear cover
Adjustable Presser Foot Pressure	Control for different fabric thicknesses
Automatic Tension Control	Maintains consistent stitch quality
Free Arm	For sewing cuffs, sleeves, and other tubular items
LCD Display	Shows selected stitch number and settings
Heavy-Duty Metal Frame	Provides stability and reduces vibration
Built-in Needle Plate Thread Guide	Helps with twin needle sewing
Accessory Storage	Built-in compartment for feet and accessories

Unpacking and Setup

Unpack and inspect contents. Place on stable surface.

Remove all packaging materials from machine and accessories.
Place machine on sturdy table or sewing cabinet.
Connect foot pedal to machine and plug into power outlet.
Install needle following instructions in manual.
Wind bobbin and thread machine as described in threading section.

WARNING! Machine is heavy; lift with care to avoid injury. Ensure power cord is not damaged.

First-Time Operation

Power on machine; follow setup prompts.

Thread machine: Follow threading path marked on machine.
Insert bobbin: Place bobbin in bobbin case with thread unwinding clockwise.
Select stitch: Turn stitch selection dial to desired stitch number.
Adjust settings: Set stitch length and width as needed.
Test sew: Use scrap fabric to test stitch quality and tension.

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

Specifications

Model: Singer HD6600C
Type: Heavy-Duty Electronic Sewing Machine
Stitches: 110 built-in stitches
Stitch Length: Adjustable up to 4mm
Stitch Width: Adjustable up to 6mm
Speed: Up to 850 stitches per minute
Bobbin: Top drop-in, Class 15 transparent bobbin
Needle: HAx1 sewing needle, size 14/90 included
Presser Feet: All-purpose foot, zipper foot, buttonhole foot, button sewing foot included
Power Supply: 110V, 60Hz
Warranty: 25-year limited warranty

Controls and Settings

Access controls via front panel and dials.

Front Panel: Power switch, stitch selection dial, stitch length dial, stitch width dial, reverse stitch button, thread cutter button.

LCD Display: Shows selected stitch number, recommended presser foot, and stitch settings.

Stitch Length: Adjustable from 0-4mm. Stitch Width: Adjustable from 0-6mm for zigzag and decorative stitches. Reverse Stitch: Button for reinforcing stitches. Thread Cutter: Built-in thread cutter on side of machine.

Stitch Selection and Applications

Select stitches using stitch selection dial. Refer to stitch chart for applications.

Straight Stitch (1-3): Basic sewing, topstitching, basting
Zigzag Stitch (4-6): Overcasting, appliqué, stretch fabrics
Buttonhole Stitch (7-10): One-step automatic buttonholes
Decorative Stitches (11-80): Decorative sewing, quilting, heirloom projects
Stretch Stitches (81-110): Knits, elastic, activewear

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

Threading and Bobbin Winding

Proper threading is essential for good stitch quality.

Raise presser foot and needle to highest position.
Place spool on spool pin and follow threading path marked on machine.
Use automatic needle threader: Push lever down, hook thread, pull back.
Wind bobbin: Place thread on spool pin, wind through bobbin winding tension disk, press bobbin winder shaft.
Insert bobbin: Drop bobbin into case with thread unwinding clockwise, pull thread through slot.

WARNING! Always turn power off when threading machine. Ensure thread is properly seated in tension disks.

Maintenance and Cleaning

Regular maintenance ensures optimal performance.

Unplug machine before cleaning.
Remove needle plate and clean lint with brush provided.
Clean bobbin area and feed dogs regularly.
Oil machine as instructed in manual (specific points only).
Cover machine when not in use to prevent dust accumulation.

CAUTION! Use only Singer recommended oil. Do not use compressed air to clean machine.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © Singer Manufacturing Company. For support, visit www.singer.com or contact 1-800-4-SINGER. This product meets applicable UL standards.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Machine not running	Power connection	Check power cord connection; ensure foot pedal is plugged in properly.
Thread breaking	Tension/thread quality	Rethread machine; check tension settings; use quality thread.
Uneven stitches	Threading/tension	Rethread top and bobbin threads; clean tension disks; adjust tension.
Needle breaking	Needle/bent needle	Replace needle; ensure needle is inserted correctly; check for bent needle.
Fabric not feeding	Presser foot pressure	Adjust presser foot pressure; clean feed dogs; check stitch length setting.
Bobbin thread bunching	Bobbin threading	Remove and reinsert bobbin; ensure thread is through tension spring.

Reset: Turn machine off and unplug for 30 seconds to reset electronics.

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