Question about Sewing Machines
I properly thread it and test tention, yet everytime I start to sew it gets completely jammed or makes one huge knot.
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Posted on Jan 02, 2017
Test your thread quality to start, thread your machine and LIFT the presser foot (this opens the tension disks). Pull your top thread straight back. If you feel no tension no mater how much thread you pull, your thread is good. If that your machine passes that test, then let me know, we can go to step 2. If not, try different spool of thread, same test until you get a smooth pull (tip: always check your thread this way when you thread your machine)
Pull on your threaded bobbin thread while it’s in the machine. Does it pull smooth and even? If so, go to step 3. If not, try a new bobbin (bobbins get bent or distorted if wound too tight).
Clean thoroughly in the hook and bobbin case area and oil 1-2 drop is all.
Thread knotting on the bobbin can be a lot of things but here's some guidance:
If the thread is loose on the bottom of the fabric, it's actually the top thread is too loose. Think of 2 little elves playing tug of war in your machine, one on toip and one underneath. If you have loops on bottom, the top needs to pull harder (tighten top tension)
Jamming bobbin case:
If it is damaged from turning out of place once, it could have rough spots on it that makes the thread hang on it, and keeps making it turn over and over. Use a finger nail board (fine sanding) and smoothall rough spots. Then reset the bobbin case taking care to put the notch in the bobbin case in alignment with the proper spot in the machine (basically 5 o’clock) when looking at the round area where the bobbin case goes.
Posted on Mar 18, 2009
When this happens it is because the thread tension was not right so it gets stuck under the bobbin case and the feed dogs. Use a bigger lint brush and take out the bobbin casing and clean out the shuttle. When you rethread pull slightly on the thread before you feed it through the needle. This will make sure the thread is properly in the tension discs.
Posted on Apr 09, 2007
SOURCE: Designer 1
Please, take this machine to an authorized technician before you attempt to set the timing on your own. An authorized technician will have a device to quickly tell you whether or not the timing is incorrect. If you change the timing yourself and that isn't your problem, you will spend far more money getting 2 problems fixed than the one original problem.
If the machine is making what I describe as a chattering sound, you may be able to clean the bobbin case and the ledge that it sets on and the problem will go away. This bobbin case should be operated with no lubrication. Some repairmen recommend " a drop of oil to make it run quieter". This generally makes it chatter louder. If there is any lube on the bottom of the black bobbin case, wipe it off and wipe the ledge that it rests on.
By the way, if the needle is hitting the raceway, you will be able to see the marks where it is hitting. In a Viking machine, this is normally caused by the "needle to hook clearance", not timing.
Posted on Feb 19, 2008
SOURCE: Shark Euro-Pro Sewing Machine
I had the same problem with my Shark Euro Pro 7133. My problem was in threading the upper thread. The manual does not quite explain so I had to figure this out the hard way.
In threading the upper thread . the thread first goes down from the spool througt a groove. When it comes up it must catch a silver lever that moves up and down before moving it down againPlease let me know whether this helps.
Posted on Jul 26, 2008
hello, I had the exact same problem and could not find the solution until i took my machine to my sewing sensei and i solved my tedious problem. It was actually not a tension problem at all but a threading problem. Make sure you have threaded your bobbin correctly and that when you pull on the bobbin thread that the bobbin turns the right way. (mine must spin anti clockwise to work) Make sure that when you pull up the bobbin thread using the needle that it is not over the feed dogs connective bar but under it. A big problem when the thread gets caught around the bobbin case wheel is that the thread is looped around the feed dogs once and that causes the thread to get caught around the bobbin wheel. In conclusion, thread the bobbin correctly and read over your instruction book before spending the money to get it fixe in s shop.
Posted on Mar 31, 2009
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