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JUKI® MO-644D 2/3/4-Thread Home Serger Sewing Machine
2/3/4-Thread Overlock • Differential Feed • Rolled Hem • Up to 1,500 SPM
The JUKI® MO-644D Home Serger is a versatile overlock sewing machine designed for garment construction, seam finishing, and decorative fabric applications. Its 2-needle configuration supports 2, 3, and 4-thread overlock stitching for a variety of sewing projects.
Equipped with differential feed, the MO-644D allows users to adjust fabric feeding to help control stretching, gathering, and seam appearance when working with compatible knit and woven materials.
The built-in rolled hemming capability provides an additional finishing option for lightweight fabrics and decorative edges, while the adjustable stitch length and cutting width help accommodate different sewing requirements.
Color-coded threading guides and accessible adjustment controls make this serger a practical choice for home sewing enthusiasts, garment makers, and users looking to expand their overlock sewing capabilities.
With a maximum listed sewing speed of 1,500 stitches per minute, the JUKI® MO-644D provides efficient overlock performance for compatible domestic sewing applications.
Key Features
- 2/3/4-Thread Overlock: Supports multiple thread configurations for garment construction and edge finishing.
- Two-Needle Configuration: Provides stitching options for compatible overlock applications.
- Differential Feed: Helps control fabric movement when sewing knit, stretch, and woven materials.
- Built-In Rolled Hem: Allows narrow decorative edge finishing without changing the stitch plate.
- Color-Coded Threading: Provides visual guidance for threading the machine.
- Adjustable Thread Tension: Allows operators to adjust thread tension according to the selected stitch and fabric.
- Adjustable Stitch Length: Supports different seam and finishing requirements.
- Adjustable Cutting Width: Allows adjustment of the fabric trimming position.
- Upper and Lower Cutting Knives: Trim compatible fabric edges during overlock sewing.
- Multifunction Presser Foot: Supports selected specialty sewing applications according to the machine configuration.
- Integrated Seam Guide: Assists with maintaining consistent seam allowances.
- High-Speed Sewing: Maximum listed speed of up to 1,500 stitches per minute.
Applications
- Home garment construction.
- Overlock seam finishing.
- Knitwear and stretch garments.
- Sportswear and casual apparel.
- T-shirts, blouses, and dresses.
- Rolled hems and decorative edges.
- Selected gathering applications.
- Fabric edge trimming.
- Clothing alterations.
- Home sewing and creative textile projects.
Technical Specifications
| Brand | JUKI® |
| Model | MO-644D |
| Machine Type | Domestic Serger / Overlock Sewing Machine |
| Thread Configuration | 2 / 3 / 4 Threads |
| Number of Needles | 2 |
| Needle Sizes | Household #11 – #14 (Verify Needle System) |
| Maximum Sewing Speed | Up to 1,500 SPM |
| Maximum Stitch Length | 4 mm |
| Differential Feed | Yes |
| Rolled Hem Capability | Built-In |
| Cutting Width | Adjustable |
| Threading System | Color-Coded Threading Guides |
| Dimensions (W × H × D) | 10.6" × 13.5" × 11.5" |
| Weight | Approximately 15 lbs |
| Recommended Use | Home Sewing, Garment Construction & Overlock Finishing |
| Condition | New |
Included Accessories
The supplied product information identifies the following accessories. Exact package contents should be confirmed for the unit being purchased.
- Standard Presser Foot (A15016340B0).
- Foot Controller and Power Cord.
- Needle Pack.
- Screwdriver.
- Looper Threader.
- Thread Nets and Spool Caps.
- Cleaning Brush and Needle Inserter.
- Oiler.
- Tweezers.
- Vinyl Protective Cover.
- Accessory Pouch.
- Instruction Manual.
JMJ Sewing Machines Recommends
JMJ Sewing Machines recommends the JUKI® MO-644D for home sewing enthusiasts, garment makers, and sewing students looking for a versatile serger with differential feed and multiple overlock stitch configurations.
For knit and stretch fabrics, adjust the differential feed according to the material to help reduce unwanted stretching or gathering.
Before beginning a project, select the appropriate needle and thread, adjust the stitch settings, and test the machine on a sample of the intended fabric.
For rolled hemming, follow the manufacturer's recommended settings for stitch length, cutting width, thread tension, and fabric selection.
IMPORTANT — MACHINE USE & PRODUCT CONFIGURATION
The JUKI® MO-644D is a domestic overlock sewing machine designed for compatible home sewing applications.
This is not an industrial overlock sewing machine.
Industrial sewing tables, external servo motors, and industrial stands are not included.
Fabric compatibility depends on material thickness, needle selection, thread type, and machine adjustments.
Always disconnect the machine from electrical power before changing needles, replacing cutting knives, or performing maintenance.
The machine's overlock stitching functions are intended for seam construction and edge finishing. It does not replace every function of a conventional straight-stitch sewing machine.
Confirm the manufacturer's accessory package and electrical configuration before purchasing.
For assistance selecting the appropriate sewing machine, contact JMJ Sewing Machines.
The JUKI® MO-644D Home Serger Sewing Machine combines 2/3/4-thread overlock capability, differential feed, rolled hemming, and adjustable sewing controls for garment construction, seam finishing, and creative home sewing projects.