Juki DDL-8700--top & bobbin thread won't hold together for stitch
My machine was working fine and then I change the needle and now the threads will not make a stitch. I sew over the fabric and see the needle with top thread going through the fabric, but it doesn't pick up the bobbin thread and make a stitch. I have inserted another needle, but same problem exists. I have checked and the needle is inserted correctly, the machine is threaded correctly and I have played around with the bobbin and top thread tensions, but nothing works! Help please!
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needle too small or machine out of time. to time machine theres a mark on needle bar. lower needle bar till mark shows and raise bar till even with bar guide. take off feeder plate so u can see needle in relation to hook. when mark on needel bar is even with bar guide the hook should be 1/16 fron passing the needle. if not loosen 3 screws and trial and error it to get it right. use a small screwdriver and tighten just on screw when u hab aglined the hook to needle. do a full rotation and watch where needle is and needle bar mark. needel should be as clost to hook without touching.
machine is out of time and u probably have burrs on the hook since you broke the plate with a needle probably from pulling fabric and bending the needle. you instruction manual will tell u how to time machine and its really very simple. all u have to do is take off feeder plate, loosen the 3 screws that hold the hook then lower the needle with the wheel until the needle just starts to rise. bring the loose hook point to i/16 " fron the needle and tighten hook screws. machine must be tilted back to do this whole operation. it helps to have a short screwdriver to tighten the hook screws. remove burrs with lite emory paper stroking in the sale direction as the hook.
Hello Daniel, I suggest you start with a new needle. Back off the needle thread tension and the bobbin thread tension to a minimum and see how it sews. If it does not ravel the thread, you can increase the tensions until you acquire the stitch you want.
Cut the thread above the needle eye and rock the handwheel back and forth sharply to cut the thread with the sewing hook. If that doesn't work pretty promptly, undo the needle clamp and turn the handwheel, which should raise the needle bar. Then get into the bobbin case area and try to remove the bobbin case, cutting any threads you can. Keep rocking the handwheel and trying to pull out the needle (pliers help!), and eventually everything will loosen up.
Next, clean and lubricate the area under the needle plate and the shuttle, and reassemble. Put in a brand new needle, right way around and fully up in the machine. Load the bobbin case with a well-wound bobbin, and rethread the top of the machine and you should be good to go.
Hi, if your bobbin has thread, check to make sure the bobbin is inserted into the shuttle correctly. If it is loaded correctly, check to see if the needle is able to pull the thread through the throat plate. If it doesn't have thread, then all your sewing machine will do is make little holes because the bobbin thread is what catches the sewing needle thread to form the lock stitch to sew the material together . Check your manual on the sewing machine for where it is and how to put thread into it.
please check bobin case spring maybe need t adjust or rplace.
please check if you are wind bobin by correct way not too much titght or not too much loose. thread insaid bobin must be littel soft.
the last reason maybe the tip of stoper for hook id damaged and need to rplace.
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