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Ex-Display MyLock 644D



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Ex-Display MyLock 644D Overview

Ex-display models are machines which have been used for demonstrations in our showroom. In order to keep these models in a condition as close to new as possible, our showroom models are regularly replaced. Some of our ex-display machines have been returned as incorrectly ordered, not required or the machine may have failed on arrival in which case the failed part is replaced. Each machine is checked and tested by our engineers before repacking. All of our ex-display machines come with the same manufacturers guarantee as a new machine, covering labour, carriage and parts (exc. consumables).

Wide range of overlocking features in a compact machine

Essential for creative overlocking techniques

The MyLock 644D is one of the most advanced Janome overlockers with speeds up to 1300 stitches per minute. It features electronic control, a handy needle threader, and an easy upper knife release. An instructional DVD ensures that you'll be overlocking with professional results in no time.

The MyLock 644D has 2 needles and 2, 3 or 4 thread stitching capabilities. Equipped with differential feed, which is adjustable from .05 to 2.25, the MyLock 644D provides increased control for handling all types of fabrics and is essential for creative overlocking techniques. And, you can adjust the cutting width of the knives up to 7.3mm, wider than any other MyLock overlocker.

Threading is simplified by colour-coded thread guides and an easy threading lower looper. Simply lay the thread into the guide, flip a switch, and the lower looper guide is threaded, the MyLock 644D is one of the lowest priced overlockers to have this feature. The guide is automatically returned to its normal position when you turn the balance wheel. And when you lift the presser foot for rethreading, the thread tensions are automatically released so you can draw the thread smoothly. Because a lower looper pre-tension control eliminates the need to change tension for rolled hems, you can switch quickly to rolled hemming without changing the needle plate.

Easy rolled hem change over

No need to change the needle plate for rolled hemming. Just slide the needle plate setting knob to the "R" position to switch the chaining finger to the rolled hemming position.

2 thread overlocking

Set your overlocker for 2 thread use by sliding thread guide from 3 or 4 thread position to 2 thread position and attach spreader to right looper.

Lower looper threading

By rotating the threading lever, the lower looper thread guides will be accessible, making threading easy. Turn the balance wheel and the threading lever will return to its original position.

Retractable knife

The upper knife can be quickly and easily deactivated when not required.

Adjustable cutting width

Easily adjust the cutting width to suit the thickness of the material. An easy way for correcting the seam tension.

Thread cutter

The thread cutter is conveniently located on the side of the machine and trims the thread neatly and easily.

Tension release

Lifting the presser foot automatically releases the tensions which allows you to easily draw the threads through when threading, just like a sewing machine.


Janome - Standard Guarantee Cover SMD Guarantee Cover
Mechanical Parts 2 Years 5 Years
Electrical Parts 2 Years 5 Years
Labour 2 Years 5 Years
Collection & Delivery N/A 5 Years

Main Features

  • 4 Thread
  • Use with 2 3 or 4 threads
  • Differential feed
  • Easy to follow colour coded threading
  • Easy thread "lay in" top tensions
  • Easy thread lower (left) looper
  • Quick change rolled hem
  • Rolled hem pre tensioner
  • Adjustable foot pressure
  • Pre threaded with 4 white cones
  • Instructional DVD
  • Soft dust cover
  • Weight 8kg approx.

In the Box

  • Foot Control
  • Instruction Manual
  • Instructional DVD
  • Lint Brush
  • Needle Threader
  • Needles
  • Oil
  • Screwdriver (Large)
  • Screwdriver (small)
  • Spanner
  • Spool Caps x 4
  • Spool Holders x 4 (Cones)
  • Spool Nets
  • Spreader (for 2 Thread Overlock)
  • Standard Foot
  • Tweezers
  • Upper Knife (on machine)