I'd been using a juki MO-644D for about a year when it  crashed. It would've cost more to fix than to buy a new one. I loved my Juki, its a great serger. So, I ordered another. It worked perfectly for about 6 hours. Then, all of a sudden, It would not pick up the top stitch. I re threaded 15+ times, replaced needles 4-5 times, I adjusted the tension, presser foot, stitch length, everything I would have done to my old Judi, to no avail. I returned it without any problems & received a replacement. I had issues with it too regarding the top stitch. I re threaded, replaced needles, adjusted tensions, etc. it is finally working great. I hope it conts. To work like a dream. If not I'll return it & purchase a serger from a local dealer. It will cost more, but at least I'll have a repair person I can talk too.
I'd been using a juki MO-644D for about a year when it  crashed. It would've cost more to fix than to buy a new one. I loved my Juki, its a great serger. So, I ordered another. It worked perfectly for about 6 hours. Then, all of a sudden, It would not pick up the top stitch. I re threaded 15+ times, replaced needles 4-5 times, I adjusted the tension, presser foot, stitch length, everything I would have done to my old Judi, to no avail. I returned it without any problems & received a replacement. I had issues with it too regarding the top stitch. I re threaded, replaced needles, adjusted tensions, etc. it is finally working great. I hope it conts. To work like a dream. If not I'll return it & purchase a serger from a local dealer. It will cost more, but at least I'll have a repair person I can talk too.