White Rotary Sewing Machine Model 77 Manual

The White Rotary Sewing Machine Model 77 is a classic vintage sewing machine featuring a rotary hook system, built-in bobbin winder, adjustable stitch length, reverse stitching capability, built-in light, and various presser feet attachments. This manual covers operation, maintenance, troubleshooting, and care instructions for optimal performance.

Features at a Glance

Key components: Rotary hook system, built-in bobbin winder, stitch length dial, reverse lever, tension control, presser foot lifter, built-in work light.

Machine Setup

Unpack and inspect contents. Place on stable sewing table.

1. Position machine: Ensure stable surface with adequate workspace.
2. Connect power: Plug foot pedal into machine, then plug into wall outlet.
3. Install needle: Loosen needle clamp, insert needle with flat side to back, tighten.
4. Wind bobbin: Place empty bobbin on winder, thread through tension disc.
5. Insert bobbin: Drop bobbin into case with thread unwinding counterclockwise.

WARNING! Keep fingers away from needle area during operation. Unplug when not in use.

Basic Operation

Power on machine; test functions before sewing.

1. Thread machine: Follow numbered threading path from spool to needle.
2. Set stitch length: Turn dial to desired setting (2.5mm for general sewing).
3. Adjust tension: Start with setting 4, adjust based on fabric and thread.
4. Begin sewing: Lower presser foot, gently press foot pedal to start.
5. Reverse stitching: Hold reverse lever to reinforce seams.

CAUTION! Always turn hand wheel toward you. Never force the machine.

Specifications

• Machine Type: Rotary sewing machine
• Stitch Length: 0-4mm adjustable
• Stitch Type: Straight stitch only
• Bobbin Type: Class 15 metal bobbins
• Needle System: 15x1 household needles
• Presser Feet: Low shank attachment system
• Power Source: 120V AC, 60Hz
• Motor Type: Standard AC motor with foot control
• Weight: Approximately 25 lbs
• Dimensions: 15" W x 7" H x 6" D

Controls and Settings

Main controls located on machine body. Stitch length dial, reverse lever, tension control, presser foot lever.

Stitch Length Dial: 0 (basting) to 4 (long stitches). Reverse Lever: Hold down for backstitching. Tension Control: 0-9 settings (4 recommended for medium fabrics). Presser Foot Pressure: Fixed setting for general sewing.

Bobbin Winder: Push bobbin to right to engage winder. Light Switch: Separate switch for work light. Hand Wheel: Manual control, always turn toward user.

Threading Instructions

Proper threading is essential for good stitch quality.

1. Raise presser foot and needle to highest position.
2. Place thread spool on spindle at top of machine.
3. Follow numbered threading path: Through first thread guide, around tension discs, through take-up lever, down to needle.
4. Thread needle from front to back.
5. Pull up bobbin thread by holding needle thread and turning hand wheel.

Tip: Always thread with presser foot raised to open tension discs.

Stitch Selection

Model 77 performs straight stitch only with adjustable length.

1. Standard sewing: 2.5mm stitch length for most fabrics.
2. Basting: 4mm or maximum length for temporary stitches.
3. Reinforcing: 1.5-2mm for strong seams on heavy fabrics.
4. Fine fabrics: 1.5mm for delicate materials.
5. Reverse stitching: Use reverse lever at beginning and end of seams.

WARNING! Do not change stitch length while needle is in fabric.

Maintenance & Cleaning

Regular maintenance ensures optimal performance and longevity.

1. Daily: Brush out lint from bobbin area and feed dogs.
2. Weekly: Oil moving parts with sewing machine oil (2-3 drops).
3. Monthly: Clean tension discs with folded fabric strip.
4. As needed: Replace needle after 8-10 hours of sewing.
5. Storage: Cover machine when not in use to prevent dust accumulation.

CAUTION! Use only sewing machine oil. Never use household oils.

Accessories

Standard accessories included: Zipper foot, buttonhole foot, hemming foot, seam ripper, needles, bobbins, screwdriver, dust cover.

Safety Information

Always follow safety guidelines to prevent injury and machine damage.

• Unplug machine when changing needles, cleaning, or not in use
• Keep fingers away from moving needle and feed dogs
• Do not sew over pins - remove them as you sew
• Use proper lighting to see sewing area clearly
• Keep hair and loose clothing away from moving parts
• Do not force machine - let it sew at its own pace

EMERGENCY: To stop immediately, lift foot off pedal and turn hand wheel to raise needle.

Troubleshooting

Professional Service: For electrical issues or major repairs, contact authorized White sewing machine service center.