Janome 9000 bobbin will not rewind can hear like a belt slipping

SOURCE: I have a Janome 9000. I was winding a bobbin and

Is there thread caught in the bobbin winder?

SOURCE: what type of bobbin does the machine use. I

they are called janome bobbins, but need to be flat ( there are some out there with a curve). the best place is to try an janome store as i have had a few that will not fit

SOURCE: I just purchased a Tacsew

Hi Diane...you can wind bobbins while you are sewing your product, or you can wind them seperately. To wind them seperately, pull out the bobbin case, lift the presser feet up and lock them in the up position, undo the threading beyond the tension assembly. The takeup will create a birdsnest if you don;t pull the thread from it. Wind your bobbins, the re-thread your machine, insert your bobbin case, drop the presser feet, pick up the bobbin thread and sew away. If you need any other input, call me at 888-283-9640.

Robert with National Sewing Supply

SOURCE: Janome 9000 bobbin thread ends up on top of fabric

change the needle--
Correct needle insertion is mandatory for proper use of your sewing machine.
Raise the needle bar to the highest point, then loosen the needle clamp screw to remove the old needle.
Place the new needle in the needle clamp with the flat side of the needle facing the back, (round needle, the groove in the needle should face away from the shaft).
Push the needle all the way up as far as it will go. Then tighten the needle clamp screw.

rethread the top thread--top & bobbin
check the bobbin to make sure the bobbin is not damaged
reinsert the bobbin in the case correctly

SOURCE: Janome MC11000 - my bobbin case becomes dislodged

My bobbin case was jumping all the time...had it in for repairs and would bring it home and even though the tech had attached a test sew piece with different colored bobbin and top thread I could not get it to sew without the bobbin jumping. I thought that he had lied about that being sewn on this machine...finally, I found that you should start with plenty of thread in your hand when threading machine...so that once you feel it click into the tension...DO NOT PULL the thread, it pops it out of the tensioner...just loosely thread and hold tension with your thumb and forefinger while using the needle threader.