Singer Heavy Duty Model HD6600C Manual

The Singer Heavy Duty Model HD6600C is a high-performance sewing machine designed for handling tough fabrics like denim, leather, and canvas. It features a powerful motor, adjustable presser foot pressure, built-in stitches, automatic needle threader, top drop-in bobbin, and a heavy-duty metal frame. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Heavy-duty metal frame, powerful motor, automatic needle threader, top drop-in bobbin system, adjustable presser foot pressure, built-in LED light, and multiple stitch options.

Unpacking and Setup

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

1. Remove machine from packaging: Lift carefully, as it is heavy.
2. Attach power cord: Plug into machine and wall outlet.
3. Install foot controller: Connect to machine port.
4. Attach accessory tray: Slide into position if included.
5. Install needle: Use screwdriver to secure needle with flat side to the back.
6. Wind and insert bobbin: Follow threading diagram.

WARNING! Machine is heavy; use two people for lifting to avoid injury. Ensure all connections are secure before powering on.

First-Time Operation

Power on machine; follow initial setup steps.

1. Thread the machine: Follow numbered path on machine; use automatic needle threader.
2. Insert bobbin: Place bobbin in case with thread unwinding counterclockwise.
3. Select stitch: Turn stitch selection dial to desired pattern.
4. Adjust stitch length/width: Set dials according to fabric type.
5. Test on scrap fabric: Ensure proper tension and stitch formation.
6. Adjust presser foot pressure: Use dial for thicker or thinner fabrics.

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

Specifications

• Model: HD6600C Heavy Duty
• Motor: High-torque, heavy-duty motor
• Stitches: 110 built-in stitches including utility, decorative, and stretch
• Stitch Length: Adjustable up to 6mm
• Stitch Width: Adjustable up to 7mm
• Maximum Sewing Speed: 1100 stitches per minute
• Presser Foot Pressure: Adjustable dial
• Bobbin: Top drop-in, Class 15 transparent bobbin
• Needle: HAx1 sewing needle, size 14/90 included
• Power Supply: 120V AC, 60Hz
• Weight: Approximately 14.3 lbs (6.5 kg)
• Warranty: 25-year limited warranty

Controls and Settings

Access controls via front panel dials and levers. Front Panel: Power switch, stitch selection dial, stitch length dial, stitch width dial, reverse stitch lever, thread tension dial.

Additional Features: Automatic needle threader lever, bobbin winder spindle, presser foot lifter, free arm conversion lever.

Stitch Selection: Turn dial to select from 110 built-in stitches. Stitch Length: Adjust from 0-6mm for different fabrics. Stitch Width: Adjust from 0-7mm for zigzag and decorative stitches. Thread Tension: Adjust dial for balanced stitches (default 4). Presser Foot Pressure: Adjust dial for fabric thickness (higher for thick, lower for thin).

Stitch Selection and Adjustments

Supports utility, decorative, and stretch stitches for various fabrics.

1. Select stitch: Turn dial to desired number (refer to stitch chart).
2. Adjust length/width: Set dials based on fabric and stitch type.
3. Test tension: Sew on scrap fabric; adjust tension dial if needed.
4. Use reverse: Hold lever to reinforce seam beginnings and ends.
5. Change presser foot: Lift lever to remove; snap on appropriate foot.
6. Utilize free arm: Remove accessory tray for sewing cylindrical items.

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

Threading and Bobbin Winding

Proper threading is essential for optimal performance.

1. Wind bobbin: Place thread on spool pin, guide through tension disc, wrap around bobbin, press foot controller to wind.
2. Insert bobbin: Place bobbin in case with thread unwinding counterclockwise; pull thread through slot.
3. Thread upper thread: Follow numbered path on machine from spool to needle.
4. Use needle threader: Push lever down and hook thread through needle eye.
5. Pull up bobbin thread: Hold upper thread, turn handwheel toward you to bring up bobbin thread.

WARNING! Always turn power off when threading. Ensure threads are properly seated in tension discs.

Maintenance and Cleaning

Unplug machine before cleaning. Regular maintenance ensures longevity.

1. Clean lint: Use brush to remove lint from bobbin area and feed dogs.
2. Oil machine: Apply sewing machine oil to designated points as per manual (if required).
3. Check needle: Replace bent or dull needles regularly.
4. Clean exterior: Wipe with dry cloth; avoid liquids on electrical parts.
5. Store properly: Cover machine when not in use to prevent dust accumulation.

CAUTION! Do not use compressed air to clean; it can force lint deeper. Never spray cleaners directly on machine.

Regulatory Information

UL Listed: Complies with safety standards for household sewing machines. Copyright © Singer Manufacturing Company. For support, visit www.singer.com or contact 1-800-4-SINGER. This product is designed for household use only.

Troubleshooting

Reset: Turn power off and on if electronic functions malfunction.

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