What lisalu does not like about this machine
I can't say I there is anything I really dislike about this machine. But as an early model serger it does present some challenges you won't find on newer models.

Threading it is not for sissies - it is somewhat difficult and requires some physical contortions and good eyesight. It gets a tad easier once you have done it a few times.

It takes the old industrial type needles DCX1 which are available online, as are the knives, loopers and other parts, but are nearly impossible to find in a store. And with the round shank it is a little harder to insert it correctly. (A trick that helps me is to thread the needle BEFORE inserting it so I can see which way it goes. And that makes needle threading easier too.)

Setting stitch length and width and adjusting the tension is very hands on and requires some practice to get it right (not a deal breaker for me, I'm used to it)

Switching from 3 thread serging to a rolled hem and vice versa is a complicated, multiple step process that makes you think twice about whether you really want to make that rolled hem! The tensions have to be offset and then reset, which is somewhat fiddly and tedious.

Parts of the manual are badly translated from Japanese, but the pictures and step-by-step explanations for each procedure are good enough to get the job done.

BOTTOM LINE: If you are used to mechanical sewing machines and don't mind manually threading and setting the tensions, stitch width/length, etc. then you won't have a problem with this machine. If you don't require a lot of fancy feats from a serger/overlocker and you mainly want a solid reliable machine to finish edges and seams and do rolled hems then you will be happy with this. If all that meets your needs AND you are looking for a very low cost machine that won't give you repair headaches then you will love it like I do!