Old Singer Industrial Sewing Machine Manuals

The Old Singer Industrial Sewing Machine series represents classic heavy-duty sewing equipment designed for professional and industrial use. These machines feature robust construction, powerful motors, precision stitching capabilities, and durable components suitable for various materials including leather, canvas, denim, and upholstery fabrics. Below are comprehensive sections covering safety guidelines, machine features, setup instructions, operation procedures, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation & Setup 3. Machine Specifications 4. Controls and Operation 5. Threading Instructions 6. Stitch Adjustment 7. Maintenance Schedule 8. Troubleshooting Guide 9. Parts Identification 10. Safety Information 11. Warranty & Support

Features at a Glance

Key components: Heavy-duty steel frame, industrial motor, automatic lubrication system, reverse stitching capability, adjustable presser foot pressure, built-in light, and various stitch length controls.

Feature	Description
Motor Type	Industrial clutch motor with foot pedal control
Stitching Speed	Up to 1500-2000 stitches per minute
Stitch Length	Adjustable from 0-6mm
Needle System	DBx1 industrial needles
Presser Foot	Adjustable pressure with quick-release mechanism
Bobbin System	Rotating hook with class 15 bobbins
Lubrication	Automatic oiling system with visible oil reservoir
Reverse Stitch	Lever-operated reverse for secure seam endings
Thread Tension	Separate upper and bobbin tension controls
Work Space	Extended arm for large projects

Installation & Setup

Proper installation ensures optimal performance and safety.

Unpack machine and inspect for shipping damage.
Position on sturdy worktable at comfortable working height.
Install motor and connect drive belt according to tension specifications.
Connect to appropriate power supply (check voltage requirements).
Fill oil reservoir with recommended sewing machine oil.
Install needle and thread machine following threading diagram.

WARNING! Machine is heavy; use proper lifting techniques. Ensure stable mounting to prevent tipping.

Machine Specifications

Machine Type: Straight stitch industrial sewing machine
Stitch Type: Lockstitch (301)
Maximum Speed: 1500-2000 SPM
Stitch Length: 0-6mm adjustable
Needle Position: Center needle position
Presser Foot Lift: 5-13mm adjustable
Motor Power: 550W industrial clutch motor
Voltage: 110V/220V (check specific model)
Machine Weight: 35-45 kg depending on model
Dimensions: Varies by specific Singer industrial model

Controls and Operation

Front controls: Handwheel, stitch length regulator, reverse stitch lever, presser foot lifter.

Motor Controls: Foot pedal for speed control, power switch, motor positioning wheel.

Basic Operation: Position fabric under presser foot, lower presser foot, depress foot pedal to start sewing. Use handwheel for precise needle positioning. Adjust stitch length according to fabric thickness and project requirements.

Threading Instructions

Proper threading is essential for quality stitching.

Raise presser foot and needle to highest position.
Place spool on spool pin with thread unwinding clockwise.
Follow numbered threading path on machine head.
Thread through tension discs, take-up lever, and needle guide.
Thread needle from front to back.
Wind bobbin and insert into bobbin case following specific instructions.
Pull up bobbin thread by turning handwheel slowly.

Tip: Always thread with presser foot raised to ensure proper tension disc engagement.

Stitch Adjustment

Various adjustments for different materials and applications.

Stitch Length: Turn regulator knob - higher numbers for longer stitches.
Thread Tension: Upper tension dial (higher numbers for tighter tension).
Bobbin Tension: Small screw on bobbin case (turn clockwise to tighten).
Presser Foot Pressure: Adjusting screw above presser foot bar.
Needle Position: Ensure needle is straight and properly inserted.

WARNING! Make adjustments only when machine is stopped and power is disconnected.

Maintenance Schedule

Regular maintenance ensures longevity and consistent performance.

Maintenance Task	Frequency	Procedure
Oil machine	Daily (8 hours use)	Add oil to reservoir; oil points marked in manual
Clean lint	After each project	Remove needle plate and bobbin area; brush clean
Check belt tension	Monthly	Adjust motor position for proper belt deflection
Inspect needles	Before each use	Replace bent or damaged needles immediately
Full service	Annually	Professional inspection and adjustment

Troubleshooting Guide

Problem	Possible Cause	Solution
Thread breaking	Incorrect threading/tension	Re-thread completely; adjust tension
Skip stitches	Bent needle/wrong needle	Replace needle with correct type/size
Uneven stitches	Incorrect tension/dirty	Clean machine; balance upper/bobbin tension
Machine jams	Thread jam in hook area	Remove needle plate; clean hook area
Noisy operation	Lack of oil/lint buildup	Oil machine; clean thoroughly
Motor doesn't start	Power issues/foot pedal	Check power connection; inspect foot pedal cord

Parts Identification

Key components: Spool pin, thread guides, tension assembly, take-up lever, needle bar, presser foot, feed dogs, throat plate, bobbin case, handwheel, stitch length regulator, reverse lever.

Replacement Parts: Use only genuine Singer industrial parts for optimal performance and safety.

Safety Information

Essential safety precautions for industrial sewing machine operation.

Always disconnect power before changing needles or performing maintenance.
Keep fingers away from moving needle and feed mechanism.
Use proper lighting to ensure clear visibility of work area.
Wear safety glasses when changing needles or performing adjustments.
Ensure work area is clean and free of obstructions.
Never operate machine with damaged electrical cords or components.

CAUTION! Industrial sewing machines operate at high speeds - always maintain focus and keep hands clear of moving parts.

Warranty & Support

Singer industrial machines come with limited warranty covering manufacturing defects. Warranty period varies by model and purchase date. For technical support, parts, or service:

Customer Service: 1-800-4-SINGER

Website: www.singer.com/industrial

Authorized Service Centers: Available nationwide - consult dealer locator on website.