Threading is piece of cake due to the color-coded thread guides and its self-threading lower looper. Just simply lay the thread into the guide, flip the switch, and the lower looper is threaded. Simple as that!
When you turn the balance wheel the guide is automatically returned to its normal position. And when you raise the presser foot for rethreading, the thread tensions are automatically released allowing you to draw the thread smoothly.
This self-threading serger also lets you quickly switch to rolled hemming without changing the needle plate. A lower looper pre-tension stitch eliminates the need to change tension for rolled hems.
If you want the professional results, and to make the most of your serging time, the MyLock 634D is unmatched.