The ML644D includes essential features for simple overlocking. The differential feed system of two feed dogs virtually eliminates puckered edges on woven fabrics and stretched edges on knits. Its unique rolled hem conversion feature eliminates the need to change the needle plate, foot, or tension setting for rolled hemming. Janome has restructured the lower looper guides for easy access. Colour-coded guides are easy to follow for 2, 3, or 4 thread overlocking. All of the features on this machine are specially designed to make this overlocker the easiest to use on the market today.
| Number of Threads | 4 |
|---|---|
| Overlock Stitch | Using 2, 3 or 4 threads |
| Flatlocking | Yes |
| Rolled Hemming | Yes including lower looper pretension slider |
| Cover Hem | No |
| Top Cover Hemming | No |
| Chain Stitch | No |
| Threading Chart | Yes |
| Colour Coded Thread Guides | Yes |
| Program Stitch Display | No |
| Type of Tension | Manual, lay-in type |
| Tension Release | Yes, lift presser foot |
| Sewing Speed | up to 1300 stitches per minute |
| Adjustable Stitch Length | 1mm to 5mm |
| Adjustable Cutting Width | 3.1mm to 7.3mm |
| Differential Feed Ratio | 0.5mm to 2.25mm |
| Adjustable Foot Pressure | Yes |
| Free Arm | No |
| Needle System | Janome Ballpoint HAx1SP |
| Machine Weight | 8Kg |
| Machine Cover | No |
| Quick change to rolled hem | Yes |
| Retractable Upper Knife | Yes |
| Two Thread Converter | Yes |
| Thread Cutter | Yes, on face plate |
| Accessory Box | Yes |
| Waste Tray | Yes |
| Foot Control | Yes |
| Carry Handle | Yes |
| Instructional DVD | Yes |
- Presser Foot (on machine)
- Pack of needles (HAx1SP)
- Spool Holders x 4
- Screwdriver (Lge)
- Screwdriver (Sml)
- Spool Caps x 4
- Lint Brush
- Tweezers
- Spanner
- Nets x 4
- Oil
- Spare Upper Knife
- Needle Threader
- Spreader for 2 thread
- Lint Catcher
- Accessory Box
- Foot Control
- Instruction Book
