Singer 6700C Heavy Duty Manual

The Singer 6700C is a heavy-duty sewing machine designed for handling tough fabrics like denim, leather, and multiple layers of material. It features a powerful motor, adjustable presser foot pressure, built-in stitches, automatic needle threader, drop-in bobbin system, and a durable 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, drop-in bobbin, adjustable presser foot pressure, built-in LED light, stitch selection dial, and reverse stitch lever.

Unpacking and Setup

Unpack and inspect all contents. Place on stable, level surface.

1. Remove machine from packaging: Carefully lift machine from box, remove all protective materials.
2. Attach power cord: Plug power cord into machine and into grounded electrical outlet.
3. Install foot pedal: Connect foot pedal to machine port, place on floor in comfortable position.
4. Attach accessory tray: Slide accessory tray into position if included.
5. Install needle: Use screwdriver to loosen needle clamp, insert needle with flat side to back, tighten securely.

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

First-Time Operation

Power on machine; follow setup steps for threading and bobbin.

1. Wind bobbin: Place thread spool on pin, guide thread through bobbin winder tension, press bobbin onto winder shaft, engage winder.
2. Insert bobbin: Open bobbin cover, drop bobbin into case with thread unwinding counterclockwise, pull thread through slot.
3. Thread upper thread: Raise presser foot, guide thread through threading path following numbered guides, use automatic needle threader.
4. Draw up bobbin thread: Hold upper thread, turn handwheel toward you to lower and raise needle, pull thread to bring up bobbin thread.
5. Test stitch: Place fabric under presser foot, lower presser foot lever, gently press foot pedal to begin sewing.

CAUTION! Keep fingers away from needle area during operation. Always turn off and unplug for maintenance.

Specifications

• Machine Type: Heavy-Duty Mechanical Sewing Machine
• Motor: High-torque, powerful DC motor
• Stitches: 10 built-in stitches (straight, zigzag, stretch, decorative)
• Stitch Length: Adjustable up to 4mm
• Stitch Width: Adjustable up to 5mm
• Presser Feet: Includes general purpose, zipper, buttonhole, and blind hem feet
• Needle System: HAx1 (15x1) household needles
• Bobbin: Class 15 transparent bobbin
• Maximum Sewing Speed: 1100 stitches per minute
• Power Requirements: 120V AC, 60Hz, 0.7A
• Weight: 14.5 lbs (6.6 kg)
• Dimensions: 15.4" x 6.7" x 12.2" (with accessory tray)

Controls and Settings

Access controls via front panel and dials. Front Panel: Stitch selection dial, stitch length dial, stitch width dial, reverse stitch lever, presser foot lever.

Stitch Selection: Turn dial to select desired stitch pattern (straight, zigzag, stretch, decorative). Stitch Length: Adjust from 0-4mm (0 for buttonholes). Stitch Width: Adjust from 0-5mm for zigzag and decorative stitches. Reverse Stitch: Press and hold lever to sew in reverse for securing stitches. Presser Foot Pressure: Adjust dial for different fabric thicknesses (higher number for thicker fabrics).

Stitch Selection and Adjustments

Select appropriate stitch for fabric type and project.

1. Straight stitch: For seams, topstitching, basting (length 2.5mm for medium fabrics).
2. Zigzag stitch: For finishing edges, sewing stretch fabrics, appliqué.
3. Stretch stitches: For knits and elastic fabrics to prevent popped seams.
4. Decorative stitches: For embellishments and decorative sewing.
5. Buttonhole stitch: One-step automatic buttonhole with buttonhole foot.

Tip: Always test stitch on fabric scrap before starting project. Adjust tension if needed (normal setting is 4).

Threading and Bobbin Winding

Proper threading is essential for good stitch quality.

1. Upper threading: Follow numbered path from spool pin to needle. Use automatic needle threader by pushing lever down and hooking thread through hook.
2. Bobbin winding: Disengage clutch by pulling handwheel outward. Place spool on pin, thread through guides, wind evenly onto bobbin.
3. Bobbin insertion: Ensure bobbin rotates counterclockwise when pulled. Draw thread through tension spring.
4. Thread tension: Upper tension dial (0-9), bobbin tension adjusted with small screwdriver (factory set, rarely needs adjustment).

WARNING! Always raise presser foot when threading. Ensure machine is off when winding bobbin.

Maintenance and Cleaning

Regular maintenance ensures optimal performance and longevity.

1. Daily: Brush out lint from bobbin area and feed dogs after each project.
2. Weekly: Remove needle plate to clean underneath, oil moving parts with sewing machine oil (2-3 drops).
3. Monthly: Check belt tension, inspect electrical cord for damage.
4. Needle replacement: Replace needle after 8-10 hours of sewing or with each new project.

CAUTION! Unplug machine before cleaning or maintenance. Use only sewing machine oil, not household oils.

Accessories

Standard accessories included with Singer 6700C.

Safety Information

Important safety precautions for operating heavy-duty sewing machine.

• Always unplug machine when not in use, during maintenance, or when changing accessories.
• Keep fingers away from moving parts, especially needle area.
• Do not operate with damaged power cord or foot pedal.
• Use proper needle for fabric type to prevent breakage.
• Ensure adequate lighting in work area.
• Keep machine away from water and moisture.
• Do not place objects on foot pedal when not in use.
• Supervise children and pets near operating machine.

WARNING! Never sew over pins; remove pins as you sew to prevent needle breakage and injury.

Troubleshooting

Service: For technical support, contact Singer Customer Service at 1-800-4-SINGER or visit www.singer.com. Authorized service centers available nationwide.