Janome MyLock 634D – Professional Serging Made Easy

When you want to make the most of your serging time with professional results, the MyLock 634D is unmatched. It features 2 needles and 2, 3, or 4-thread overlock stitching for versatile performance. Threading is a breeze thanks to color-coded thread guides and an easy lower looper threading system. You can even switch to rolled hemming quickly—without changing the needle plate.

Feature Highlights

The Janome MyLock 634D, with its electronic control, is the most advanced MyLock serger. Its differential feed ratio (0.5 to 2.25) gives you greater control for all types of fabrics and special effects.

Threading is simplified with color-coded guides and a self-threading lower looper. Just lay the thread into the guide, flip a switch, and it's threaded. When you turn the balance wheel, the guide automatically resets to normal position. Lift the presser foot to release thread tension, making rethreading smooth and effortless.

Switching to rolled hemming is quick and easy, with no need to change the needle plate. The lower looper pre-tension stitch eliminates tension adjustments for rolled hems.

Technical Features

• 2, 3, or 4-thread serging
• Lay-in thread tension dial
• Threading chart with color-coded guides
• Tension release device for effortless threading
• Easy-access lower looper guides
• Changeable thread guide
• Quick-change rolled hem
• Lower looper pre-tension setting slider
• Retractable upper knife
• Adjustable foot pressure
• Snap-on presser feet
• Adjustable stitch length: 1mm – 5mm
• Differential feed ratio: 0.5 – 2.25
• Adjustable cutting width: 3.1mm – 7.3mm
• Maximum sewing speed: 1,300 spm
• Waste chip box included

Built-In Stitches

• Standard Serging
• Rolled Hemming
• 3/4 Thread Serging
• 2 Thread Serging
• Picot Edging
• Narrow Hemming
• Decorative Overedging
• Gathering
• Pin Tucking

Included Feet

• Standard Serging Foot

Included Accessories

• Upper Knife (1)
• Needle Threader
• Set of Needles
• Thread Stripping Discs
• Standard Needle Plate
• Spool Nets (4)
• Spool Caps (4)
• Spool Holders (4)
• Spreader
• Tweezers
• Lint Brush
• Screwdrivers (Large & Small)
• Spanner
• Oil
• Waste Chip Box