One-Touch Air Threading Made Simple
Experience effortless setup with the HUSQVARNA® VIKING® AMBER™ Air S|400 Overlock Machine. Its one-touch air threading system quickly threads the loopers with the push of a button, giving you more time to focus on sewing.
Air Threading Loopers
The HUSQVARNA® VIKING® AMBER™ Air S|400 makes threading simple with its air threading loopers. Just insert the thread into the looper guide, push it through, and the machine does the rest—giving you fast, reliable threading every time.


16 Decorative & Utility Stitches with 4/3/2 Thread Capability
The HUSQVARNA® VIKING® AMBER™ Air S|400 overlock machine offers 16 stitch options for trimming, stitching, overcasting, and decorating. With 4/3/2 thread capability, you can create strong seams, professional finishes, and creative details in less time.
16 Decorative and Utility Stitches using 4/3/2 Sewing
Trim, stitch, overcast and decorate projects in half the time


Differential Feed for Perfect Fabric Control
The HUSQVARNA® VIKING® AMBER™ Air S|400 features a differential feed system with two sets of feed teeth that work independently to move fabric smoothly. This prevents stretching on knits and eliminates puckering on lightweight fabrics, while also allowing you to create intentional gathers and decorative effects with ease.
Details
Air Threading Loopers
With the HUSQVARNA® VIKING® AMBER™ Air S|400 one-touch air threading overlock, threading your overlock machine loopers is a breeze.
Built-In Needle Threader
Easily thread both the right and left position needles with the adjustable built-in needle threader.
Differential Feed
Eliminates stretching of knit fabrics, puckering of lightweight fabrics, and can automatically gather fabric.
LED Lighting
Illuminates the sewing area for clear visibility to reduce eye strain
Lay-In Tension
Easily place your threads in the tension discs and clearly see that the threads are securely in the tensions
Adjustable Stitch Length, Cutting Width and Presser Foot Pressure
Select best stitch length, fine tune cutting width, and adjust the amount of pressure used on your fabric for smooth seams on all types of fabric.
Extra Presser Foot Height
Easy to fit and sew several layers or heavy fabrics.
4 / 3 / 2 Thread Sewing
Provides multiple options for decorative and utility overlock sewing.
Stitch Safety Lock
When the front cover is open, the Stitch Safety Lock engages and the machine will not sew.
15 Stitches
Fast sewing with professional results
What’s Included
Accessories included:
- Screwdriver (large)
- Screwdriver (small)
- Double-ended wrench
- Tweezers
- Needle set
- Thread nets
- Spool holder
- Lint brush
- Waste tray
- Needle holder/converter pin
- Upper cutter
- Looper threading wire
- Accessory box
- Foot control
- Cover
- Instruction manual
Additional Features
- Air-Threading Loopers
- Built-In Needle Threader
- 15 Stitches
- Differential Feed
- LED Lighting
- Built-In Thread Cutter