My bernette 65 machine is giving me a number of problems:
> the thread is getting all tangled and knotted in the bobbin area
> the thing-a-ma-gig that turns around with the bobbin in it misses its timing every now and again and the needle hits a solid part in stead of a part where there is a gap, causing the needle to break and me to swear
> on top of this my darling better half (whom I love dearly) has decided to take the little hook bit apart where it seemed the thread was snagging and now we cant remember how it fits back together
Anybody got some advice or a workshop manual (for the bernette, not my spouse)? Thanks :-)
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thread the machine correctly( follow the operators manual)
wind the bobbin properly and when placing the bobbin in the bobbin carrier pull the thread down the small slot and under the spring plate
thread for the needle always comes in from the left (The side of the groove in the needle ) and out the cut away side
pull a long piece of thread for the needle out and hold it while you turn the machine over
after 1 or 2 revolutions the needle thread will bring up the bobbin thread and you then pull both threads out a bit
if you don't have a user/operators manual there are 2 options
one is to go google and type in --user manual for bernina bernette model 65 sewing machine and down load the pdf version
the other option is to visit manchester shops ( cloth and fabric shops ) and talk with the sales people as may of these places have a sewing circle of people who will be only to willing to help you.
try changing the needle --make sure the needle is the right one for the fabric being sewed try a different thread make sure the bobbin is not over filled make sure the bobbin is turned the right way in the bobbin case make sure the thread has not come off the thread take up lever
Grasp the threads and hold them down when you start your seam. If it still happens make sure your thread is seated into your upper tension mechanisms. If that still isn't solving your problem... CLEAN between the tension discs with some sturdy fabric folded in half. (wax build up from threads can cause issues)
Have you replaced the needle with a new one? Your needle may be bent or in wrong, or the wrong size. You may have a bad needle. Check that the upper thread path is running freely and is not tangled or wrapped around anything. Make sure that the bobbin is unwinding in the correct direction as well, most bobbins, this is clockwise as the bobbin faces you. If you are using inexpensive thread, it could be the thread that is the culprit. Uneven thread in the needle will not flow through the needle properly, and cause bunching as well. Save it for the bobbin, and use good thread in the top.
Presumably neither of you has or knows how to adjust your bobbin tension so, I'm going to presume it's your hook. Make sure you are threading the machine coorectly then you'll need to remove your needle plate by removing the two screws, pull out your hook (this is the part your bobbin sits in) but make sure you note which way it sits inside your machine. Have a look at the plastic hook for any sharp edges or burs, you may need to replace your hook or try and gently sand (400grit) the plastic if possible. The key part of the hook is the small blunted point as this is what catched the loop of thread behind the needle. Please make sure that when you put your hook back in, that it is on the left side of that little guard sticking out on the lower right of your machine.