Manual for Singer HD6600C

The Singer HD6600C is a heavy-duty sewing machine designed for home use, featuring a powerful motor, multiple stitch patterns, automatic needle threader, adjustable stitch length and width, built-in buttonholer, free arm capability, and LED lighting. Powered by 120V AC, 60Hz. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation & Setup 3. First-Time Use 4. Specifications 5. Controls and Settings 6. Connecting Accessories 7. Stitch Selection & Sewing 8. Special Functions 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Heavy-duty metal frame, built-in stitch patterns, automatic needle threader, drop-in bobbin system, free arm, LED work light, foot pedal control.

Feature	Description
Built-in stitches	Multiple stitch patterns including straight, zigzag, decorative
Automatic needle threader	Easily threads needle with lever mechanism
Drop-in bobbin	Top-loading bobbin with clear cover
Free arm	Removable extension table for cylindrical sewing
LED work light	Bright illumination of sewing area
Stitch length/width dial	Adjustable for custom stitch settings
Buttonhole foot	One-step automatic buttonholer included
Power switch	Turns machine on/off
Speed control slider	Adjusts maximum sewing speed
Reverse stitch button	For reinforcing stitches

Installation & Setup

Unpack and inspect contents. Place on stable table or sewing cabinet.

Remove machine from packaging: Lift carefully from carrying case.
Attach power cord: Plug into machine and wall outlet (120V).
Install foot pedal: Connect to machine port, place on floor.
Attach accessories: Install presser foot, needle, thread spool pin.
Insert bobbin: Wind bobbin, place in bobbin case following diagram.

WARNING! Machine is heavy; lift with care. Ensure stable surface to prevent tipping.

First-Time Use

Power on machine; follow setup steps.

Thread machine: Follow numbered path on machine; use automatic needle threader.
Insert bobbin: Place wound bobbin in case, pull thread through slot.
Select stitch: Turn stitch pattern dial to desired setting.
Adjust settings: Set stitch length and width as needed.
Test sew: Use scrap fabric to check tension and stitch quality.

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

Specifications

Model: Singer HD6600C Heavy Duty
Stitches: Built-in stitches including utility and decorative
Motor: Heavy-duty 1.0 amp motor
Speed: Up to 1100 stitches per minute
Buttonholes: One-step automatic buttonholer
Needle Positions: Adjustable needle position
Lighting: LED work light
Power Source: 120V AC, 60Hz
Included Accessories: All-purpose foot, buttonhole foot, zipper foot, seam ripper, needles, bobbins, spool caps

Controls and Settings

Main controls located on front and side of machine.

Front Panel: Stitch pattern dial, stitch length dial (0-4 mm), stitch width dial (0-5 mm), reverse stitch button, thread tension dial.

Side/Rear: Power switch, power cord socket, foot pedal connector, handwheel, bobbin winder spindle.

Stitch Selection: Turn pattern dial to desired stitch icon. Tension Adjustment: Adjust dial for different fabrics (3-5 for medium weight). Speed Control: Use foot pedal pressure or speed slider. Needle Threader: Pull down lever, hook thread through guide, release.

Connecting Accessories

Various feet and attachments for different sewing tasks.

Turn off machine before changing accessories.
Remove current foot: Lift lever, slide off foot.
Attach new foot: Position under needle clamp, lower lever to lock.
Common feet: All-purpose (general sewing), zipper foot, buttonhole foot, button sewing foot.

Tip: Ensure presser foot is correctly installed and lowered before sewing.

Stitch Selection & Sewing

Supports straight stitch, zigzag, stretch stitches, decorative patterns.

Select stitch: Turn pattern dial to desired setting.
Adjust length/width: Set dials for fabric type and stitch style.
Position fabric: Lower presser foot, guide fabric gently.
Start sewing: Press foot pedal lightly to begin, increase pressure for speed.
Reverse: Hold reverse button to backstitch at beginning and end.
Finish: Raise needle, lift presser foot, remove fabric, trim threads.
Buttonholes: Attach buttonhole foot, select buttonhole stitch, follow automatic cycle.

WARNING! Never pull fabric forcefully; let feed dogs move it. Keep hands clear of moving needle.

Special Functions

Automatic Needle Threader: Use lever for easy threading. Free Arm: Remove extension table for sewing sleeves and cuffs. Bobbin Winding: Wind bobbin using built-in winder without threading needle.

Care & Maintenance

Unplug before cleaning. Remove lint and dust regularly.

Cleaning: Use small brush to remove lint from feed dogs, bobbin area.
Oiling: Apply sewing machine oil to designated points as per manual (if required).
Needle replacement: Replace bent or dull needles regularly.
Storage: Cover machine when not in use to prevent dust accumulation.

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

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
Machine not running	Power connection	Check power cord is plugged in; ensure power switch is on.
Thread bunching underneath	Incorrect threading/bobbin	Re-thread top and bobbin; ensure bobbin inserted correctly.
Needle breaks	Wrong needle/bent needle	Replace needle; ensure it is inserted fully and tightened.
Uneven stitches	Tension settings	Adjust thread tension; re-thread; check needle size for fabric.
Machine skipping stitches	Needle/thread mismatch	Use correct needle type for fabric; ensure needle is not dull.
Noise during operation	Lint/dust buildup	Clean bobbin area and feed dogs; check for loose parts.

Reset: Turn off, unplug for 1 minute, then restart.

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