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For wiring diagrams, contact Riccar directly.

Riccar Sewing... | Answered on Jun 21, 2017


Install a brand new needle (confirm it is installed facing the correct direction).

If it still doesn't pick up the bobbin thread, the machine is probably out of time. Search for sewing machine timing or take it for service.

Riccar Sewing... | Answered on Jun 04, 2017


Need to research web sites selling used machines, ie eBay, Amazon, Craigslist, Etsy...

Riccar Sewing... | Answered on May 20, 2017


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.

Riccar Sewing... | Answered on Apr 25, 2017


increase the needle thread tension
the term is bird nesting and is caused because the needle thread is not pulling the bobbin thread up

Riccar Sewing... | Answered on Apr 22, 2017


You better contact the local service.

In case you have any Mac issues - http://bit.ly/2oONirp

Riccar Sewing... | Answered on Apr 21, 2017


Are you sure your machine is an RX-204B instead of an RZ-204B?

Riccar Sewing... | Answered on Apr 20, 2017


Could be something with the gear that turns the bobbin case. Sounds like it needs service.

Riccar Sewing... | Answered on Apr 14, 2017


An older mechanical machine? Possibly could use a good cleaning and oiling. Old oil may have solidified and preventing things from moving.


Wheel on right side that controls the needle up and down is very tight...

Riccar Sewing... | Answered on Apr 12, 2017


The belt has to go around the motor shaft then under the roller on the pivoting lever (it's called the hall sensor) then around the brush roll. It may be easier to remove the top cover of the nozzle housing by removing the 5 screws from the bottom of the vacuum.

Riccar Vacuums | Answered on Feb 23, 2017

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