Bernette 720 Sewing Machine Manual

The Bernette 720 is a versatile electronic sewing machine with 23 built-in stitches, 4-step buttonhole, automatic needle threader, top drop-in bobbin system, adjustable stitch length and width, free arm capability, LED lighting, and multiple presser feet. Powered by standard household power supply. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation & Setup 3. First-Time Operation 4. Specifications 5. Controls and Settings 6. Stitch Selection 7. Basic Sewing Techniques 8. Maintenance & Cleaning 9. Accessories 10. Safety Information 11. Troubleshooting

Features at a Glance

Key components: Electronic control panel, automatic needle threader, free arm, LED work light, accessory compartment, foot pedal, power cord.

Feature	Description
Built-in stitches	23 stitches including utility, decorative, and stretch
4-step buttonhole	Automatic buttonhole function
Automatic needle threader	Easy needle threading system
Top drop-in bobbin	Clear view bobbin system with quick loading
Free arm capability	For sewing sleeves and cuffs
LED work light	Bright illumination of sewing area
Stitch length adjustment	0-4mm adjustable stitch length
Stitch width adjustment	0-5mm adjustable stitch width
Reverse stitch button	For reinforcing stitches
Power switch	Main power on/off control

Installation & Setup

Unpack and inspect all components. Place on stable, flat surface.

Remove packaging materials and protective covers from machine.
Connect foot pedal to machine and plug into power outlet.
Install needle: Loosen needle clamp screw, insert needle with flat side to back, tighten screw.
Wind bobbin: Place thread on spool pin, follow threading guide, wind bobbin.
Insert bobbin: Open bobbin cover, drop in bobbin with thread unwinding counterclockwise.

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

First-Time Operation

Power on machine; follow basic setup procedures.

Thread machine: Follow numbered threading path from spool to needle.
Use automatic needle threader: Push lever down and hook thread through needle eye.
Select stitch: Turn stitch selection dial to desired pattern.
Adjust settings: Set stitch length and width as needed.
Test sew: Use scrap fabric to test stitch quality and tension.

CAUTION! Always start with needle in highest position. Keep work area well-lit.

Specifications

Stitches: 23 built-in stitches
Buttonhole: 4-step automatic
Stitch Length: 0-4mm adjustable
Stitch Width: 0-5mm adjustable
Bobbin: Top drop-in system
Needle System: HAx1 standard domestic needles
Lighting: LED work light
Free Arm: Yes, removable accessory compartment
Power Supply: Standard household power
Weight: Approximately 6.5 kg

Controls and Settings

Main control panel includes stitch selection dial, stitch length dial, stitch width dial, reverse button, power switch.

Stitch Selection: Turn dial to select from 23 built-in stitches including straight, zigzag, stretch, and decorative patterns.

Stitch Length: Adjust from 0-4mm (0 for darning, 4 for basting).

Stitch Width: Adjust from 0-5mm for zigzag and decorative stitches.

Reverse Stitch: Press and hold to sew in reverse for reinforcement.

Stitch Selection

Available stitch patterns and recommended uses:

Straight Stitch: Basic sewing, center needle position
Zigzag Stitch: Finishing edges, appliqué, stretch fabrics
Blind Hem Stitch: Nearly invisible hems
Elastic Stitch: Sewing elastic, stretch fabrics
Decorative Stitches: Various patterns for embellishment
Buttonhole Stitch: 4-step automatic buttonholes

Tip: Always test stitch on scrap fabric before sewing project.

Basic Sewing Techniques

Fundamental sewing operations and procedures.

Start sewing: Position fabric under presser foot, lower foot, press pedal gently.
Guide fabric: Let machine feed fabric; do not pull or push.
Reverse stitching: Press reverse button at beginning and end of seams.
Pivoting: Stop with needle down, lift presser foot, turn fabric.
Finishing: Raise needle to highest position, lift presser foot, remove fabric.
Thread cutting: Use built-in thread cutter on face plate.

WARNING! Never sew over pins. Remove pins before they reach needle.

Maintenance & Cleaning

Regular maintenance ensures optimal performance.

Daily: Brush out lint from bobbin area and feed dogs.
Weekly: Oil hook race and moving parts as per manual instructions.
Monthly: Clean entire machine, check for loose screws.
Needle replacement: Change needle after every project or 8 hours of sewing.

CAUTION! Always unplug machine before cleaning or maintenance.

Accessories

Standard included accessories:

All-purpose foot
Zipper foot
Buttonhole foot
Blind hem foot
Bobbin (4x)
Needles (assorted)
Seam ripper/Lint brush
Screwdriver
Spool caps

Note: Use only Bernette recommended accessories for optimal performance.

Safety Information

Important safety precautions for operation.

Always disconnect power when changing needles, cleaning, or not in use
Keep fingers away from moving parts and needle area
Do not operate with damaged cord or plug
Use proper lighting to see work area clearly
Keep machine away from water and moisture
Supervise children and beginners closely

Troubleshooting

Symptom	Possible Cause	Corrective Action
Machine not running	Power connection	Check power cord; ensure switch is on; check foot pedal connection
Thread breaking	Tension/needle issues	Rethread machine; check needle for damage; adjust tension
Uneven stitches	Threading/tension	Rethread both top and bobbin; clean lint; adjust tension
Fabric not feeding	Presser foot/feed dogs	Ensure presser foot is down; clean feed dogs; check stitch length
Needle breaks	Bent needle/wrong size	Replace needle; ensure correct insertion; check for bent needle
Bobbin issues	Winding/insertion	Rewind bobbin evenly; ensure correct insertion direction

Service: Contact authorized Bernette service center for repairs.

Support: Visit www.bernette.com or contact customer service.