Riccar Sewing Machines - Page 4 - Recent Questions, Troubleshooting & Support
Needle hits bobbin casing.
Don't know if you have a manual or not. You can read the manual from the link below. I would look for the bobbin area in the manual. There should be a section showing the bobbin area for cleaning and oiling. It may as simple as removing and reassembling the bobbin case.
It could be the timing and would require a service repair technician.
https://www.manualslib.com/manual/545699/Riccar-9600.html
I have bought new needles for my Riccar overlocker now the stitching is loopy and messy
Verify you are using the correct needles for your machine. Some needles vary by a fraction of an inch but will make a big difference in serging success.
Remove all the threads from the machine.
(Always cut the threads below the spools, raise the presser foot, and pull the threads DOWN through the needles--Never pull up!)
ALWAYS RAISE the presser foot when threading.
Be sure to always thread each thread in the proper order--threading out of order will usually fail.
Rethread from the beginning and give each thread an extra little tug when threading the tension disk.
If a thread breaks, it is usually less frustrating in the end to remove all the threads and rethread from the beginning. Trying to rethread a broken thread will most likely cause problems.
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