Operation Manual for a Singer Model 66 Sewing Machine

The Singer Model 66 is a classic treadle sewing machine manufactured from 1905 to 1950s, featuring a vibrating shuttle mechanism, reverse stitching capability, and various stitch length adjustments. This robust machine operates via foot treadle power and includes attachments for buttonholes, ruffling, and hemming. Below are key sections covering setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Cast iron body, vibrating shuttle bobbin system, tension dial, stitch length regulator, reverse lever, presser foot, and treadle power system.

Unpacking and Setup

Carefully unpack and inspect all components. Place on stable surface or in treadle cabinet.

1. Assemble treadle cabinet: Follow cabinet instructions for proper assembly.
2. Mount machine: Secure machine to cabinet using mounting brackets.
3. Install belt: Connect treadle belt to handwheel and treadle mechanism.
4. Oil machine: Apply sewing machine oil to all moving parts before first use.
5. Thread machine: Follow threading diagram for proper upper and lower threading.

WARNING! Machine is heavy; use proper lifting technique. Ensure cabinet is stable before operation.

First-Time Operation

Before sewing your first project, practice on scrap fabric.

1. Thread machine: Follow numbered threading path from spool to needle.
2. Wind bobbin: Use built-in bobbin winder with thread from spool.
3. Insert bobbin: Place bobbin in shuttle with thread pulling counterclockwise.
4. Adjust tension: Start with medium tension (4-5) and adjust as needed.
5. Practice stitching: Use both hands to guide fabric while operating treadle.
6. Test reverse: Engage reverse lever to reinforce stitches.

CAUTION! Keep fingers away from moving needle. Always turn handwheel toward you.

Technical Specifications

• Manufacture Years: 1905-1950s
• Bobbin System: Vibrating shuttle, front loading
• Stitch Length: Adjustable 6-20 stitches per inch
• Needle System: 15x1 standard domestic needles
• Presser Feet: Low shank attachment system
• Thread: Standard cotton and polyester threads
• Weight: Approximately 30 pounds (machine only)
• Power: Treadle operated (some models converted to electric)
• Bed Type: Standard flat bed
• Throat Space: 7-8 inches of working space

Controls and Adjustments

Main controls located on machine face and side panels.

Front Controls: Stitch length regulator, tension dial, reverse lever, presser foot lifter.

Side Controls: Handwheel, bobbin winder disengagement, light switch (if electrified).

Stitch Length: Turn regulator for shorter/longer stitches. Tension: Adjust dial for balanced stitches (higher numbers = tighter tension). Presser Foot Pressure: Adjust screw above presser foot for thick/thin fabrics. Reverse: Push lever toward machine for backward stitching.

Using Attachments

Various attachments available for specialized sewing tasks.

1. Buttonhole Maker: Creates uniform buttonholes of various sizes.
2. Ruffler: Creates gathers and pleats automatically.
3. Hemmer Feet: For rolled hems and edge finishing.
4. Zipper Foot: For installing zippers and piping.
5. Binder: Attaches bias tape to edges.

Tip: Ensure machine is properly threaded and tension adjusted before using attachments.

Basic Sewing Techniques

Master these fundamental techniques for successful sewing.

1. Straight Stitching: Guide fabric evenly under presser foot.
2. Seam Finishing: Use zigzag attachment or finish seams separately.
3. Gathering: Use ruffler attachment or long stitches pulled to gather.
4. Darning: Lower feed dogs or cover with darning plate for free motion.
5. Button Sewing: Use button foot or sew manually with zigzag stitch disengaged.
6. Quilting: Even feed walking foot recommended for multiple layers.

WARNING! Never force fabric through machine. Let feed dogs move fabric naturally.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Care & Cleaning

Proper care preserves machine finish and function.

1. Cleaning: Use soft brush to remove lint from bobbin area and feed dogs.
2. Oiling: Apply sewing machine oil to all moving joints and friction points.
3. Storage: Cover machine when not in use to prevent dust accumulation.
4. Surface Care: Wipe with soft cloth; avoid harsh chemicals on decals.

CAUTION! Use only sewing machine oil. Never use household oils which can gum up mechanism.

Warranty Information

Original warranties no longer apply due to age. Service available through authorized Singer service centers or qualified vintage machine technicians. Replacement parts may require sourcing from specialty suppliers. For technical support, contact Singer customer service or consult vintage sewing machine forums.

Troubleshooting

Professional Service: Recommended for electrical issues or major mechanical repairs.

Resources: Singer support services and vintage machine specialists