My sewing machine gears jammed.

he error E6 on a Singer Soulmate 5500 sewing machine is typically associated with a threading error. If you have confirmed that the thread is correctly threaded and the bobbin is in good condition, here are a few other things you can try:

1. Check the needle: Make sure the needle is the correct size and type for the fabric you are sewing, and that it is securely inserted into the machine.
2. Check the tension: The tension of the thread may be incorrect. Adjust the tension dial until the thread is feeding through smoothly.
3. Clean the machine: Dirt and debris can build up in the machine over time, causing issues with the threading and operation. Clean the machine thoroughly and make sure the threading path is clear.
4. Check for thread jams: Remove any thread that may be jammed in the machine and clear the path for the thread.

It is covered here in videos and articles. Try running it with no thread in it at all. If it runs, it is a problem with threading. Speed issues are caused by the foot controller rather than the machine UNLESS, it is an issue with the motor itself.

https://www.google.com/search?q=Brother+FS155+Sewing+Machine.+E6+error

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Sewing Machine: Needle won't move
A disengaged clutch, broken drive belt or internal drive gear failure can prevent the needle from moving. Engage the hand wheel clutch if you have it disengaged for bobbin winding. If the needle won't move with the clutch engaged, unplug the sewing machine and check the drive belt.
https://www.searspartsdirect.com/diy/symptom/sewing-machine-repair/1234596/needle-won-t-move/smac1011147
How to Fix Brother Sewing Machine Error Code E6 Q: What does E6 error message mean? A: The motor locked up because thread is tangled Q: How to fix E6 error message? A: Do the following:

• The upper thread could be tangled. Remove the upper thread and any loose threads. Raise the pressure foot, raise the needle to its highest position and rethread the machine.
• Remove the bobbin and bobbin case to clean any lint or loose threads. Install the bobbin case so that the projection on it aligns with the spring. Then install the bobbin into the bobbin case.
• The needle could be bent. Replace the needle making sure the flat side is facing the back.

Follow the instructions below if you receive the error message "E6"
1. Check if the machine rattles and stops as soon as the sewing starts
- Upper thread could be tangled or threaded incorrectly
- Check that the thread take-up lever is threaded

- Raise the presser foot to raise the needle to its highest position and re-thread the machine
2. Remove the bobbin and bobbin case
- Clean any lint or loose threads

- Install the bobbin case so that the projection on it aligns with the spring and install the bobbin into the bobbin case

3. The needle could be bent
- Check that the needle does not hit the needle plate
- Replace the needle if necessary
- Make sure the flat side is facing the back
If the problem persists, your machine may require service.
If the machine is in warranty, call Brother Customer Service at 1-877-Brother (1-877-276-8437) for warranty options.
If the machine is out of warranty, contact a Brother Authorized Service Center for repair by clicking on the link below:
http://www.brother-usa.com/service/default.aspx
https://help.brother-usa.com/app/answers/detail/a_id/54048/~/error-message-e6

have you checked to see if the bobbin is turned in the right direction?
have you checked to see if the top thread has come off the thread take up lever?
if these suggestions don't help then I suggest taking the machine in for a check up.

try these things
new needle
rethread machine--presser foot & needle to highest position
keep a check on the thread take up lever, when the top thread come
off the thread take up lever it can also make the machine jam

a part of the computer is malfuctioning, & needs to be checked
try a new needle
rethread the machine using every thread guide
clean under the needle plate & in the bobbin area for loose threads & lint

In my Brother CE-4000, it appears as though the feed dogs (which you can change to a higher position or a lower position) are allowing the bobbin case to spin all the way around and then the needle hits the bobbin case. When the feed dogs are in the lowest position, the bobbin case does not spin all the way around when the needle moves up and down (and therefore the needle does not get stuck in the bobbin case. I am wondering if this is a problem with the feed dogs/case?

try re-threading your machine. usually when the machine is jammed at the bobbin or when the needle gets stuck to the bobbin thread, it means that there is an error with the thread. make sure that the thread isn't pulled through the wrong side of the needle, wrapped the wrong way around the wheels on the top, and that the bobbin is threaded correctly. if this doesn't work, you may want to contact their hotline.

The way I solved this problem was to take a break! When I resumed I was more patient and found that I wasn't doing the bobbin right. I took my time and got it right this time....hooray!