Janome Memor Craft 10001 bobbin tension

There is. It's the little screw on the side of the bobbin case. Be sure to mark its position BEFORE making any changes and turn it only 1/8 to 1/4 of a turn per adjustment.

However, if the pin damaged the bobbin case or anything else, that may need to be repaired or replaced. Sometimes, just biting the bullet and purchasing a brand new bobbin case eliminates a lot of frustration--not that expensive. Besides, I have several bobbin cases on hand because I change thread weights between quilting and regular garment sewing and it is just easier to have a bobbin case set up specifically for one use--eliminates the need to make constant adjustments to the bobbin tension between projects.

Be sure you've changed out the old needle. It could also be an easier fix by just removing all the thread and rethreading the machine again--always raise the presser foot when threading the top thread.

Bernina 1630 Parts

..

I am not sure about this particular machine but in most machines there will be a nob on the front loose low numbers like 0 1 -2 work well on number 3. If the nob is not on the front check and see if it is on the side.

Remove the thread from the machine. ALWAYS RAISE the presser foot and rethread the machine from the beginning. Verify the path is correct. The standard tension setting is the midway point although you will most likely need to tweak this for your particular machine.

If you are still having problems, you may need to readjust the bobbin tension.


Understanding Thread Tension Threads

This is caused by the tension between the bobbin and needle threads being out of balance. If the knots between the stitches are on the bottom side, then you need to tighten your needle thread tension a little at a time until the knot is in middle of fabric. The reverse of this is if the knots are on the top, then either your bobbin tension is too loose or your needle thread tension is too tight. If this occurs, then loosen your needle thread a little at a time to see if knot goes down in middle of fabric. If it does not, then you need to increase the tension on your bobbin thread. This done by taking bobbin case out and tighten the small screw located in the middle of the spring on the side of the case. You only need a slight, steady pull on the bobbin thread - the more you put on the bobbin, the more you are going to have to put on the needle thread.

These are the instructions in the manual:
Adjusting the Thread Tension
Balanced thread tension:
Small amount of the needle thread shows on the wrong side of the fabric.
When the needle thread tension is too tight:
The bobbin thread shows on the right side of the fabric. Reduce the tension by turning the tension dial to a lower number.
When the needle tension is too loose:
The needle thread forms loops and the stitches look shaggy.
Increase the tension by turning the dial to a higher number.

However, if you have recently changed the needle check that it is pushed right up in the slot. Other thing that springs to mind is making sure that the bobbin thread is correctly placed in the bobbin, and that the chamber is not full of lint and threads.

sounds as if it has insufficient top tension, clean between discs then re thread with presser foot down

Upper thread breaks
needle may be in backwards
Raise the needle bar to the highest point, then loosen the clamp screw to remove the old needle, place the new needle in the clamp with the flat side to the back of the machine
Push the needle all the way up to the stop or as far as it will go, then tighten the needle clamp screw
upper tension may be to tight
the needle may be bent or damaged
thread may be hanging up in bobbin case--check area for loose threads or lint
check for burrs on the needle plate & on the bobbin case

change the needle--needle must be correct one for fabric sewn
adjust the top tension--make sure there is no lint or loose threads
in the top tension dial
also clean under the needle plate & in the bobbin area for lint or loose threads
make sure the bobbin is inserted correctly--some bobbins only go one way

BRAND new Janome 1420qdc. New needle, doesn’t need oil. Will NOT wind a bobbin. Used almost an entire spook of thread doing this. At my wits end. HELP!

Have you got the needle in the correct way around - the thread must lie in the groove in the needle. Is the machine correctly threaded? Try release the tension a bit and check that the bobbin tension is not too loose and bunching up under the needle plate. The instructions for bobbin tension setting are:- Check that the thread is tight around the bobbin. Make sure that the bobbin is in the right way around - the bobbin thread should double back on itself coming out of the bobbin holder. The bobbin tension adjustment is the small screw in the plate on the bobbin case that the thread passes under as it comes off the bobbin and goes out. This might not be exactly the same as yours but should give you an idea of the position.