I get major tangles with lower thread and cannot sew. I've cleaned the shuttle and machine, changed needle, thread, bobbin and wonder if the shuttle is damaged....How could I tell? If so, is a replacement available? My CS-80 is four years old and very reliable so far...Can anyone help? Thanks, Michelle

Check your bobbin threading tension (is bobbin thread loose on bobbin?); check needle thread tension (does it snag or jump when feeding?)

Be sure bobbin case, etc. is properly installed in shuttle housing.

It is possible that the "shuttle" isn't moving properly. It's also possible that it has a burr. Since it appears that you not little to nothing about these machines I would take it in and have it serviced. Tell the service person about your problem. Ask them to clean, oil, and time it.... and look for issues with parts. it will cost you about $150 or more if it needs parts.

First change that needle. It's likely bent. A bent needle won't create a stitch.

Then double check your timing. It sounds like you have it ******** a bit... But that's hard to determine from a description. Before you start the timing process, make sure that your needle bar is in the correct position. (typically the upper timing mark on the needle bar is just below the lower needle bar guide when the needle is at its very lowest point) If necessary loosen the needle bar holder and make a correction. Once the needle bar is positioned correctly... then move on to the shuttle/needle timing.

Good luck!

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

Upper thread breaks
1.needle may be in backwards
Correct needle insertion
Correct needle insertion is mandatory for proper use of sewing machine.
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 or if using a round needle--the groove in the needle should face away from the shaft.
Push the needle all the way up to the stop or as far as it will go, then tighten the needle clamp screw
2.upper tension may be to tight--try 3 to 5
3.the needle may be bent or damaged--try rolling the needle on a flat surface to see if it's bent or not
4.thread may be hanging up in bobbin case--check area for loose threads or lint
???
Lower thread breaks
The most probable cause of lower thread breaking is improperly wound bobbin
1.always start with a empty bobbin
Never wind one color over the other
2.choose thread that is identical in color & type as the one to be used for upper threading
3.wind the bobbin evenly across & in layers
4.don't wind the bobbin so full that it would be tight & hard to insert into bobbin case
5.bent bobbin--replace
6.lint built up in the bobbin case--frequent cleanings will eliminate this problem, the more often you use the sewing machine the more often it needs to be cleaned
7.thread catching on the bobbin spring or latch on bobbin case, check to see that the bobbin is inserted completely & correctly, & that you are using the right kind of bobbin

also check the thread take up lever to make sure the thread has not come off of it cause that can make the machine jam up also

Hello

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

If the bobbin does not fit snugly into the bobbin case, then get new bobbins. You need class A or 15 and they do not cost very much. Make sure they are plastic and not metal.

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.


There should be a tension setting for your bobbin thread, as well as your top thread. It sounds to me like your bobbin tension setting is not in sync with your top thread.

most common solution to this is to remove the top thread completely from machine and re thread it with the presser foot UP not down. This will allow the top thread to engage properly in the top tension disc

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.

Hi

Thanks for using FixYa. The upper thread could be tangled. Remove the thread completely from the machine. The correct size spool cap should be used for the size of the thread spool. Re-thread the machine according to the directions in the manual.

Place a spool of thread on a spool pin and check the upper threading.
Remove the bobbin and make sure the bobbin is threaded properly in the shuttle race. Remove any loose threads or lint in the shuttle race.

Also please check that the bobbin is installed in its case rightly. Needle thread is too tight. Hold the thread lightly to keep the end from going down into the shuttle.

The needle could be thread incorrectly. Thread the needle eye from the front to the back.
The needle could be bent or improperly inserted and install a new needle with the flat side of the needle facing the back.

Please do rate the solution and revert for further assistance.


Thanks
Rylee

Hi!

Check to see if the lower thread be tangled. Also, the bobbin could be threaded improperly in the shuttle hook. Rethread the bobbin in the shuttle hook.
How to detangle a thread---

When a machine stops operation due to tangled thread, do not turn the pulley by force.
If the pulley is turned by force then, lower thread might not be picked up correctly and stitches might not be formed correctly.

If threads get tangled, remove a needle plate and cut the tangled threads by scissors or cutter.

Do rate the solution if you find it helpful & useful.

Thanks
Rylee

To address my needle thread tangling (horribly) in the bobbin compartment, I rethreaded the bobbin. I cleaned the bobbin and the feeder feet, I changed the bobbin and the thread. I changed the tension on the needle thread and the bobbin thread. NO FIX! Then, I changed the needle - the problem was fixed instantly. I sewed awhile and then put the original needle back in. No problem. I think perhaps that the problem is being caused by the needle getting out of alignment somehow during sewing. If you are having the same issue, try it. It can't hurt!