Juki MO-623 Garnet Series Serger

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The Juki MO-623 serger is a 1-needle, 3-thread overlock machine. The Juki MO623 is from the most reliable serger brand on the market with the least repairs - Juki.

If you’re looking for reliable, dependable serger sewing machines, Juki sergers fit the bill perfectly. Juki machines are known as one of the most reliable out on the market today, especially since they are known for having the fewest repairs.

The Juki MO623 is in the Garnet line of sergers for the home, suitable for both beginner or experienced sewists to use for creating sports wear or evening wear with incredible ease.

Your projects aren’t limited to apparel either. With the Juki MO623, you can create crafts, accessories, and even home décor. For your ease, Juki has put in a color-coded threading system to make the machine easy to thread. Simply follow the color coded path to get your threads into the guides.

Tension adjustment is much easier with the MO623 as well, thanks to the 1-rotation tension dials. Normal positions are highlighted to give you simple and consistent adjustment for your tensions.

This Juki Serger offers an upper and lower knife system to make cutting easier, smoother and more consistent. The entire system is run off a one drive that is dedicated to this role to provide  you with a very even and smooth cut.  

Rolled hems are also a veritable breeze – all you have to do is flip a switch and you're ready to create beautiful rolled hems on your Juki MO623 Serger. The presser foot has multiple functions and can sew overlock stitches, add tape, add elastic or ribbon, or even add sequins. The presser feet snap on, meaning you can change out a presser feat in a snap – literally!

Seam allowances are made much easier with the built-in seam guide that takes the guesswork right out of your sewing. If you struggle to see your project, this serger has bright LED lights to help you see your project more clearly. In addition, the MO623 can reach up to 1,500 spm in speed, uses 2 or 3 threads, and machine size 11 or 14 needles.

Juki offers a 2 year electronic warranty, 5 year mechanical warranty, and 90 day labor warranty only if the serger is used for home sewing purposes. 

The Amazing Home Serger - The Juki MO623!


  • Sewing Speed: Max 1,500 spm
  • Number of Threads: 2/3 Threads
  • Needle: Household Machine Size 11 or 14
  • Overlocking Width: Standard: 4mm
  • Rolled Hem: 1.0 - 1.5mm
  • Stitch Length: 1 - 4mm (Standard: 2.5mm) / Rolled Hem: 1.0 - 1.5mm
  • Tension: Industrial Type Dial / 1 Rotation
  • Built-In Rolled Hemming: Right Needle / 2 or 3 Thread
  • Flat Lock: 2 or 3 Thread
  • Universal Presser Foot: Tape, Ribbon, Narrow Elastic Application
  • Presser Foot Lift: 5mm
  • Dimensions: 270mm (w) × 260mm (d) × 295mm (H)
  • Weight: 7.0 kg (15 lbs.)

Included Accessories

  • Foot Controller
  • Nets
  • Spool Caps
  • Tweezers
  • Cleaning Brush
  • Looper Threader
  • Needle Box
  • Small Screwdriver
  • Oiler
  • Accessory Bag
  • Dust Cover
  • Foot Control/Power Cord
  • Instruction Manual


  • Color Coded Threading Guides throughout the machine make threading easy and efficient
  • Adjustable Stitch Length by simply turning the knob inside the machine within the range of 1 -4mm
  • 1-Rotation Thread Tension Dials with normal tensions highlighted for simple, consistent tension adjustment
  • Easy Dial Knife Adjustment makes the upper knife completely self-adjusting
  • Heavy Duty Knife System operates with dedicated drive to assure consistent and easy cutting of light to heavy weight fabrics
  • Automatic Rolled Hemming can be created with built-in finger tip control; there is no need to change the foot or plate
  • Sewing Light is placed to give optimum lighting to the fabric and needle areas
  • Multi-Purpose Foot is equipped with a slotted tape guide for sewing woven tape, elastic, sequins and ribbon
  • Sewing Width Gauge is conveniently located on the guard cover for easy access

28 Reviews

  • 5
    3-thread Juki MO-623

    Posted by FruGal on 23rd May 2021

    This serger does fewer things than a 4 or 5-thread model, but it does them well. Is it easy to thread? Not especially, but not harder than the average serger. You only have to deal with 3 spools and thread paths, so in that sense it is a little faster to thread. I chose this because 90% of my sewing is just 3-three thread seams, so there was no need to spend more for extra features I don't need. I sew women's clothing using light to medium weight woven and knot fabrics. I use the serger for both seam finishes and garment construction. If I need a 4th thread I just use my regular machine. It handles all these fabrics well, and sewing knit tops, leggings etc. can be done in minutes. While it's fine to use a regular sewing machine for knits, this is best for times when I just want to get it done in a hurry. I don't normally sew heavy denims, canvas etc. so I can't comment on that. I also didn't buy the extra attachment for 2-thread rolled hems. I seldom sew these. Be aware that if you need to do this type of hem, you will need the attachment.

  • 5
    great basic serger

    Posted by Lisa on 27th Aug 2018

    my purpose has always just for overlocking fabric edging to prevent fraying. had simple juki 3 thread serger from the 80's that finally quit 5 years ago. went with a up to 5 thread name brand (but not juki) serger due to a super duper deal. i ended up using only the 3 thread function and it was not as quiet nor as smooth with the fabric pull. so came back to this simple basic just what i need brand and model. so far i have only used it for thin and medium weight fabric and both came out with pretty even taunt stitching. i will have to remember the tensions adjustments for different fabric weight. leave lots of varied weight scrap fabric around for the "testing" before sewing the actual project! the only CON: no cut away remnant catch tray

  • 5

    Posted by Sewing Girl on 18th Dec 2017

    Great little machine! I needed a 2nd serger just for quick serging! I love it! You cant go wrong with a juki!! Its my 3rd! Serger arrived faster then delivery date! Thank you Amazon!

  • 4
    3 threads not a good idea., choose 4 or 5 thread.

    Posted by Javier Garcia on 18th Dec 2017

    The machine is amazing the way it works and the use., but the problem is it's only 3 threads!!!!, if I would of know at the time., 3 thread won't work all your clothes will break so fast., not a good idea., invest in 4 or 5 thread that's my advice!, but as I mention this design works amazingly.

  • 5
    Perfect home machine

    Posted by julie meyer on 18th Dec 2017

    I was looking for an easy-to-use home serger for an easy-to-accept price. This was a great choice. I've only been using it for a month now, but it does everything I ask it to do and I feel like my ability to produce clothing has expanded and is faster. Definitely recommend this if you are looking for a serger to use at home.

  • 5
    Five Stars

    Posted by FIDELIS AKPA on 18th Dec 2017

    very good

  • 5
    I recommend this machine!

    Posted by Olga on 22nd Nov 2017

    Thank you for your answer, for your quick service! I am so glad that I bought this Juki MO-623 Garnet Series Serger! Thank you!

  • 5
    I am glad I bought it.

    Posted by L.F on 9th Oct 2017

    Small machine, easy to use. Works well with stretch and regular fabrics. But on thin fabric the seam looks different than the one done on industrial machine.

  • 4
    Juki serger

    Posted by P. Kehler on 9th Oct 2017

    Purchased the serger as a gift for my wife and she was very excited! Works very well and the price was the same or better than ANY other site, nice not having to shop around. It did everything it said it did and was not a disappointment. The video it came with was a little outdated but very quick and easy in describing what it can all do. I purchased Juki because of the quality in the name brand and not the functions, but from what I hear from my wife it does everything she could need. If you buy the extra feet (like all sergers) than it could do even more. Value for the money, compact and well made.