Brand new Juki having thread breakage and tension problems
 

Has anyone else had thread breakage or upper tension problems with the Juki hzl dx7? I just opened my new machine today and I am confident it is threaded correctly. I can start sewing but within a minute the upper tension goes super tight and the thread breaks. I have checked everything I know. Help??

Have you checked the spool of thread itself? Some will "hang up" on certain machines.

Sometimes a machine doesn't like a certain thread or if you are FMQ it doesn't like to go in a certain direction. After checking all the obvious like threaded correctly top and bottom try a new needle and different thread. All of my dinky mechanical Brother machines take any thread but my new used Brother PQ1500 doesn't like cotton bread to FMQ and will break thread if I move the sandwich to the left. Also be sure the thread and needle size are a good match. Keep us posted on how it goes so maybe we can get another idea on solving

Hi, I have the Juki HZL-DX7, and I always use a thread stand. I did have a few problems when I used the horizontal spool pin on the machine, even with cross-wound spools. I've had the machine for a year now, and have used many different types and weights of threads, always with a thread stand, with no problems whatsoever.

It does sound like the problem is with the spool of thread. Most machines come with two spindles to accommodate spools of thread that are stacked (vertical feed) or cross wound (horizontal feed that needs to come off the top of the spool). I have a thread stand for cross wound threads. I have to treat polyester thread like cross wound thread and feed off horizontal spindle or some of it slides off the spool and under it and ties onto the spindle until it breaks. Good luck as you pursue the solution to the problem so you can enjoy your new machine without frustration. I know a couple of people who really love their JUKI machines.

I haven't seen a spool with a slit in it for years. What brand has this now?

If you are using the horizontal spool, be certain that the cap keeps the thread from winding on spool. I have had the machine for a little less than a year and the only time I had trouble with the thread was when I used the thread stand. I had threaded it through both loops and as a result, it put too much resistance on the thread. If all of the advice doesn't solve the problem, phone your dealer or the Juki company. They are great.

Call your dealer if you have one. Sometimes you can get a lemon, rare but it can happen. A pal fiddled and fiddled with a new machine, finally called the dealer who said, "it should be working perfectly!" He took it back and the replacement worked well right out of the box.

That's a gem of a dealer! The dealers here never say that's a defective machine here is a brand new one without a big hassle if ever. One reason I won't buy from a dealer anymore.

Yes, the machine can be a lemon. Take the machine back to the dealer right away and demo what the machine is doing wrong. Check the warranty on the machine too.

There's so much variation in dealers! It makes shopping that much harder, I completely understand opting out of the whole dealer thing. I'm very lucky, the place that sold us my Juki 2010 told me that if there was an issue in the first 7-10 days they'd give me another new machine. They were also $100 less than Amazon. They have free lifetime lessons too but that's pretty standard I believe. I've bought two machines from them and I send folks there all the time. We have another dealer in town that told me "mechanical machines are basically crap" (but he carries the Juki 2200Mini which is just like the 2010 go figure) but he won't carry the more basic beginner mechanicals so he doesn't get my business. Honestly it's easier to get machines on Amazon.

same issue
 

I am having the same sort of issue. My machine is just about a year old, has already spent time at Juki (about a month). Mine dethreads at the start...once I get it to sew, it is okay, but getting it to sew means rethreading several times. When I compare it to my other machine the tl2000 qi, this one is a pain in the butt. I am actually considering buying another 2000 and using this one only for zigzag. Very disappointing.

Lift your presser foot to open the tension discs and see if the thread pulls through smoothly. If there's any kind of tension or "bumpy" feeling as you pull it through, it's in the threading.
Also, where is it breaking? Is it shredding or just snapping?

Coats and Clark cotton thread spools have the little slit.

I won a set of C&C cotton thread at guild door prize drawing. The spools have the snap spool, no slit. I remember the old spools had the slit but thought they would be long gone by now.

This happens on my frequently. Also from time to time the thread will get looped around the raising thread bar and will jam up. All of this is related to the spool of thread hanging up. The way I have tried to resolve this most of the time is to turn the spool around so it leaves the spool with the thread to the front side facing you. It seems to work for me.