Bobbin size for Juki Frou Frou HZL-11

When experiencing a sewing machine jam and encountering an error message like "lower pressure foot" on the Juki HZL-F600 Quilt & Pro Special, it indicates there may be an issue with the machine's threading, bobbin, or pressure foot. Here are some steps you can take to troubleshoot and resolve the problem:

1. Rethread the Machine: Start by completely rethreading both the top thread and bobbin thread. Ensure that the threads are properly seated in the tension disks, thread guides, and the bobbin case. Follow the threading instructions in the machine's user manual to ensure correct threading.
2. Check the Bobbin: Remove the bobbin and inspect it for any tangles, knots, or thread buildup. Clean out any lint or debris in the bobbin area. Make sure the bobbin is wound correctly and placed in the bobbin case with the thread feeding in the correct direction.
3. Verify the Pressure Foot: Double-check that the pressure foot is properly attached and lowered. Ensure that it is securely in place and there are no obstructions preventing it from making proper contact with the fabric.
4. Adjust Thread Tension: Incorrect thread tension can also cause sewing issues. Experiment with adjusting the tension settings on the machine to find the optimal balance for your fabric and thread. Refer to the machine's user manual for guidance on adjusting thread tension.
5. Clean and Lubricate: Regularly clean and lubricate your sewing machine to ensure smooth operation. Follow the manufacturer's instructions for cleaning and lubrication, and pay special attention to the bobbin area and the needle area.
6. Seek Professional Assistance: If the issue persists after attempting the above steps, it is recommended to contact a qualified technician or the Juki customer support for further assistance. They can provide specialized guidance and troubleshooting specific to your Juki HZL-F600 Quilt & Pro Special machine.

Remember to always consult the machine's user manual for specific instructions and guidance. If you're uncertain or uncomfortable performing any troubleshooting steps, it's best to seek professional help to avoid potential damage to the machine.

Try searching for Juki HZL 7800 user manual
may also try searching in YouTube, they usually have bobbin removal videos there
i just fixed my machine with same problem, the distance between niddle and bobbin was out of adjustment. Try searching for service manual for your machine, they have all adjustment procedures there.
I am not sire what the specs are for Yours, mine is Janome.
there is three factors that may cause your problem.
1-niddle tip either too high or too low for bobbin hook to pick up
2- niddle tip is too far from bobbin
3- bobbin timing is out of adjustment
I set all three according my service manual it runns better than new
good luck!

Hi,
If when you remove the needle plate, you may find that the hook is not rotating around the black bobbin case, then the probable cause is a broken gear.
Juki does not make the gear available as a replacement part. The machine must be sent to the Juki service center and there seems to only one left in the US.
Contact Juki and if you have the original box to ship it in they may pay part of the shipping cost.
I have had to do this, I hope you find a simpler solution.

Try removing the needle and the presser foot from the machine. If there are threads above the needleplate, gently try to remove those. Then go below the needle plate and, using tiny scissors, try clipping and gently pulling out threads, if necessary, with tweezers.

Try installing a brand new needle. Sometimes a bent or dull needle will cause lots of racket.

You should consult your owner's manual for maintenance--cleaning and oiling instructions. Most sewing machines do require oil--some more frequently than others. Most machines also need frequent oiling in the bobbin/hook area. Be sure to use only good quality sewing machine oil for your machine--NO 3-in-1, WD-40, cooking oil, or old brown stinky oil.

If it continues to make the noise, you should probably have it serviced. Since it is less than a year old, it might still be covered under warranty, so don't delay.

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Here is you manual:

JUKI HZL K85 Service Manual

JUKI HZL G210

your machine is not a self oiling machine, you should put the oil on the needle bar, and to the bobbin.

so many different versions to disengage the drive, but all are located on the right hand side of the machine on the part that allows you to rotate the sewing mechanism by hand. there is likely a button or that part will pull outwards

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