Janome MyLock 184D Manual

The Janome MyLock 184D is a professional-grade overlock sewing machine designed for creating clean, finished edges on fabrics. It features 2/3/4 thread overlocking capabilities, differential feed for stretch fabrics, easy threading system, built-in rolled hem, adjustable stitch length and width, free arm capability, and built-in LED lighting. 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 Types & Applications 7. Threading Instructions 8. Maintenance & Cleaning 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Overlock sewing head, differential feed system, free arm, LED work light, stitch length/width dials, rolled hem lever, tension dials.

Feature	Description
Differential Feed	Prevents stretching or puckering on various fabrics
Rolled Hem	Creates narrow, professional hems on lightweight fabrics
Free Arm	Allows easy sewing of sleeves and other tubular items
LED Lighting	Bright illumination of work area
Stitch Length Dial	Adjusts stitch length from 1-4mm
Stitch Width Dial	Adjusts stitch width from 3-7mm
Tension Dials	Individual tension control for upper and lower loopers
Threading System	Color-coded threading paths for easy setup
Cutting Width	Adjustable fabric trimming width
Power Switch	Turns machine on/off

Installation & Setup

Unpack and inspect contents. Place on stable sewing table.

Remove packaging materials and protective covers.
Install presser foot: Align with shank and lower lever to lock.
Connect power cord: Plug into machine and wall outlet.
Install needles: Use Janome 130/705H needles, flat side to back.
Thread machine: Follow color-coded threading guide.

WARNING! Keep fingers away from needles and cutting blades during operation. Always unplug when not in use.

First-Time Operation

Power on machine; test on scrap fabric first.

Select stitch type: Choose 2, 3, or 4 thread overlock as needed.
Adjust tensions: Start with recommended settings for fabric type.
Set stitch length: 2.5-3mm for standard overlocking.
Test on scrap: Check stitch formation and adjust as needed.
Begin sewing: Guide fabric gently without pulling.

CAUTION! Always use the correct needle type and size for your fabric. Replace dull or bent needles immediately.

Specifications

Machine Type: 2/3/4 Thread Overlock
Stitch Length: 1-4mm adjustable
Stitch Width: 3-7mm adjustable
Differential Feed: 0.7-2.0 ratio
Rolled Hem: Built-in capability
Needles: Janome 130/705H system
Lighting: LED work light
Power Source: 120V AC, 60Hz
Speed: Up to 1300 stitches per minute
Weight: Approximately 15.4 lbs (7 kg)

Controls and Settings

Access all controls from front and top of machine. Main Controls: Power switch, stitch length dial, stitch width dial, differential feed dial, tension dials.

Adjustments: Stitch Length (1-4mm), Stitch Width (3-7mm), Differential Feed (0.7-2.0), Upper Looper Tension (0-9), Lower Looper Tension (0-9), Needle Tension (0-9).

Special Functions: Rolled hem lever, free arm conversion, cutting width adjustment, presser foot pressure.

Stitch Types & Applications

2-Thread Overlock: Lightweight finishing, delicate fabrics. 3-Thread Overlock: Standard overlocking, most woven fabrics. 4-Thread Safety Stitch: Strong seams, knit fabrics.

Select appropriate stitch type for fabric and purpose.
Adjust tensions according to fabric weight.
Test stitch on fabric scrap before starting project.
Use differential feed for stretch fabrics to prevent waving.

Tip: Use rolled hem for lightweight fabrics like chiffon and organza.

Threading Instructions

Follow color-coded threading paths for proper setup.

Raise presser foot and needles to highest position.
Follow numbered threading sequence: Upper looper (blue), lower looper (green), needles (red/yellow).
Ensure threads are properly seated in tension discs.
Pull threads under presser foot toward back.
Test threading by manually turning handwheel.

WARNING! Always thread with power off. Never force threads through guides.

Maintenance & Cleaning

Regular maintenance ensures optimal performance.

Clean lint and dust after each project.
Oil moving parts as recommended in manual.
Replace needles regularly.
Check and replace cutting blades if dull.
Store covered when not in use.

CAUTION! Unplug machine before cleaning or maintenance. Use only Janome recommended oils.

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
Thread breaking	Incorrect tension/threading	Rethread completely; adjust tension settings.
Skipped stitches	Dull/bent needle	Replace needle; ensure correct type/size.
Fabric puckering	Differential feed setting	Adjust differential feed ratio.
Uneven stitches	Tension imbalance	Balance upper and lower looper tensions.
Machine won't start	Power/thread jam	Check power connection; clear thread jam.

Reset: Turn power off/on if electronic issues occur.

Service: 1-800-631-0183; www.janome.com