Hi, my thread gets caught and pulls the materal into the foot and i can not sew due to the jamming and the thread get all bunched up by the bobbin

Likely top thread tension is too low (or none) or top thread is being caught by debris in hook race. Remove and clean bobbin area (hook race). Could also be a damaged bobbin case. Check top thread tension by comparing foot up to foot down while pulling top thread.

Check your stitch sample. Most likely the thread that is knotting up is the top thread. Try this:

Remove the top thread completely from the machine.
ALWAYS RAISE the presser foot and rethread from the beginning.

You may need to tweak the top tension. Increasing tension will pull bobbin thread up. Decreasing tension will allow bobbin thread to pull top thread down.

Had a similar problem with our Pfaff. Needed a replacement cam. broken gear.

Clean out the bobbin area if there are any thread tangles there.

Refer to the maintenance section of the manual - see the configuration of the bobbin case and shuttle race? The bobbin case as an extending arm and the race a notch. When inserting the bobbin case into the shuttle, turn the handwheel so the needle is at it's highest position. Then lift the lever on the back of the bobbin case and insert the cast into the shuttle, arm pointing straight up toward the bed of the sewing machine.

Now thread the machine with the presser foot up - always - and see if the tangling stops.

When you forget to lift the presser foot before threading the machine, the tension control does not open to capture the thread. Then when you begin to sew, the top thread has no tension, and the bobbin thread, which does have tension, pulls the top thread to the bottom in messy loops.

Make sure when you thread the machine, that you have the presser foot (the foot that rides on the fabric) in the 'up' position.Also make sure you get the thread down between the discs of the upper tension. Set the tension on '4'. Usually when you get thread bunching up below it's caused by improper threading of the upper thread.
Hope this helps!
Bob

Thread under the fabric is usually caused by improper top threading. Try this test, with presser foot up, pull on thread, it should feed smoothly. Now, put the presser foot down, it should barely move when pulled. Also, try a new needle.

email me for retiming instructions and remind me of your make, [email protected]

The problem is never the bobbin when you have this problem. It's the top thread. Take the thread off the top of the machine and rethread the top. Make sure the small tension dial is on 4 or 5 (the larger dial on the front left is for the pressure on the foot, not the thread tension.) After you thread the machine, put the pressure foot down but NOT on the thread. Then pull gently toward the back of the machine. When you do, the needle should bend slightly backwards before the thread comes through the machine. If it pulls with no resistance you could simply have "fluff" or remants of thread between your tension discs. If you do, put the dial on zero and using an old needle, clean between the discs and try threading the machine again with the "pull test" I described earlier.
No tension on the top of the machine, lets the bobbin tension win and it pulls all the thread to the bottom of the fabric.

Try these time savers:
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)
Step 2:
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.

Hi, Usually wrap-ups in the bobbin area are caused by the lack of tension on the top thread. The slack arm ( shinny lever that moves up and down while sewing) has to pull the loop around the bobbin case and it does so only if the tension on the top thread is sufficient to keep it from pulling more thread of the spool.
Try this: Thread the top of the machine all the way just short of the needle eye. When the presser foot is up the thread should pull through easily. Now drop the presser foot (this closes the tension discs) and pull the tread while adjusting the upper tension control.
If everything is working correctly you should feel the drag on the thread change if not something is keeping the discs from closing.
Most Janomes aren't too difficult to remove the nose cover, usually just one screw and you can get a look at the thread path. Look for thread wrapped around the mechanism.
Sorry, no easy answer but I hope this helps.