Singer 6268 Service Manual

The Singer 6268 is a versatile sewing machine designed for home use, featuring multiple stitch patterns, automatic needle threading, adjustable stitch length and width, built-in buttonholer, free arm capability, and a durable metal frame. This service manual provides detailed information for maintenance, troubleshooting, and repair procedures. Below are key sections covering safety, features, disassembly, maintenance, adjustment, and troubleshooting.

1. Features at a Glance 2. Safety Precautions 3. Disassembly Instructions 4. Technical Specifications 5. Parts Identification 6. Maintenance Procedures 7. Timing Adjustment 8. Tension Adjustment 9. Lubrication Guide 10. Electrical System 11. Troubleshooting Guide

Features at a Glance

Key components: Metal frame construction, stitch selection dial, built-in buttonholer, automatic needle threader, free arm, drop feed, reverse stitch lever, bobbin winder, and foot pedal control.

Feature	Description
Stitch Patterns	Multiple built-in stitches including straight, zigzag, and decorative patterns
Automatic Needle Threader	Simplifies threading process
Built-in Buttonholer	One-step automatic buttonhole function
Free Arm	Removable extension table for cylindrical sewing
Stitch Length/Width Control	Adjustable settings for customization
Drop Feed	Allows for free-motion sewing
Reverse Stitch Lever	Secures stitches at beginning and end
Bobbin Winder	Built-in bobbin winding mechanism
Foot Pedal	Variable speed control
Light	Built-in work area illumination

Safety Precautions

Always unplug machine before servicing. Use proper tools and follow instructions carefully.

Disconnect power: Unplug from electrical outlet before any disassembly.
Use insulated tools: When working on electrical components.
Wear protective gear: Safety glasses when handling springs or small parts.
Work in clean area: Keep workspace organized to prevent lost parts.
Follow torque specifications: Do not overtighten screws.

WARNING! Risk of electric shock. Always disconnect power before servicing. Moving parts can cause injury.

Disassembly Instructions

Step-by-step guide to accessing internal components.

Remove top cover: Unscrew 4 Phillips screws on top housing.
Remove side panels: Remove screws from both sides.
Access motor: Remove motor mounting screws and disconnect wires.
Remove stitch selection mechanism: Carefully detach linkage rods.
Access bobbin case: Remove needle plate and hook assembly.
Remove free arm: Detach extension table screws.

CAUTION! Keep screws organized. Note wire connections before disconnecting.

Technical Specifications

Model: Singer 6268
Type: Electronic Mechanical Sewing Machine
Stitches: 68 built-in stitches
Stitch Length: 0-4mm adjustable
Stitch Width: 0-5mm adjustable
Speed: Up to 750 stitches per minute
Needle System: 130/705 H
Bobbin: Class 15 transparent
Power Supply: 110-120V, 60Hz
Motor: 70 Watt DC motor
Weight: 12.5 lbs (5.7 kg)
Dimensions: 15.4" x 7.1" x 12.2"

Parts Identification

Major components and their part numbers for reference.

Upper Assembly: Handwheel (Part #6268-001), Stitch Selector Dial (6268-002), Tension Assembly (6268-003), Needle Bar (6268-004), Presser Foot (6268-005).

Lower Assembly: Hook Assembly (6268-006), Bobbin Case (6268-007), Feed Dog (6268-008), Shuttle (6268-009).

Electrical: Motor (6268-010), Foot Controller (6268-011), Power Cord (6268-012), Light Bulb (6268-013).

External: Free Arm (6268-014), Extension Table (6268-015), Accessory Box (6268-016).

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

Cleaning: Remove lint and dust from bobbin area after each project.
Oil points: Apply sewing machine oil to designated points monthly.
Needle replacement: Change needle after 8-10 hours of sewing.
Bobbin case: Clean and inspect for burrs monthly.
Check belt tension: Ensure proper motor belt tension quarterly.
Electrical check: Inspect power cord and connections annually.

Tip: Use only Singer recommended oils and parts for maintenance.

Timing Adjustment

Proper timing is critical for stitch formation.

Set machine to straight stitch, longest length.
Remove needle plate and bobbin case.
Turn handwheel until needle is at lowest position.
Check hook point: Should be approximately 0.04" above needle eye.
Adjust by loosening hook set screw and repositioning.
Test with fabric scrap after adjustment.

WARNING! Incorrect timing can cause skipped stitches or needle breakage.

Tension Adjustment

Balanced tension ensures proper stitch formation.

Upper tension: Adjust via tension dial (higher number = tighter).
Bobbin tension: Adjust small screw on bobbin case (clockwise = tighter).
Test balance: Sew on two layers of fabric; stitches should look identical on both sides.
Fine adjustment: Make small changes and retest.

CAUTION! Over-tightening bobbin tension can damage spring.

Lubrication Guide

Apply oil to moving parts as specified.

Location	Oil Type	Frequency
Hook race	Sewing machine oil	Every 3 months
Needle bar	Sewing machine oil	Monthly
Presser bar	Sewing machine oil	Monthly
Take-up lever	Sewing machine oil	Monthly
Motor bearings	Light machine oil	Annually
Handwheel shaft	Sewing machine oil	Every 6 months

Note: Wipe excess oil after application to prevent staining fabric.

Electrical System

Circuit diagram and electrical component testing.

Power Requirements: 110-120V AC, 60Hz, 0.7A. Motor: 70W DC with speed control circuit. Foot Pedal: Variable resistance control (0-10k ohms). Light: 15W bulb, replace by removing socket cover. Fuse: 1A slow-blow fuse located near power inlet.

Testing: Use multimeter to check continuity of foot pedal, motor brushes, and power cord. Replace worn brushes when less than 1/4" remaining.

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
Machine won't run	Power issue, foot pedal, motor	Check power outlet; test foot pedal continuity; inspect motor brushes.
Skipped stitches	Needle, timing, thread	Replace needle; check hook timing; use correct thread.
Thread breaking	Tension, burrs, thread quality	Adjust tension; check for burrs on needle plate; use quality thread.
Uneven feeding	Feed dog, presser foot pressure	Clean feed dog; adjust presser foot pressure.
Noisy operation	Lack of oil, loose parts, lint	Oil machine; tighten screws; clean lint from hook area.
Buttonhole not forming	Settings, mechanism	Check buttonhole settings; lubricate buttonhole mechanism.
Light not working	Bulb, socket, wiring	Replace bulb; check socket connection; inspect wiring.

Reset: Unplug for 5 minutes to reset electronic controls if malfunctioning.

Service: For parts and technical support, contact Singer at 1-800-4-SINGER or visit www.singer.com