20 Most Recent Singer 4830 Questions & Answers

Your first step is to go to the Singer site and download your user manual -- it's available free. You need to check to make sure that you are inserting it properly in the first place. Please keep in mind that the bobbin does NOT turn--the thread unwinds from the stationery bobbin. Next, I would manually sew using the hand wheel and no fabric with the needle plate off and observe what it's doing. You CAN replace the bobbin case if necessary.

Inserting a bobbin Raise presser foot. Turn hand wheel toward you until needle is in its highest position. Open slide plate and remove empty bob bin. . Pull 4" (10 cm) of thread from replacement bobbin and insert bobbin into case as shown. . Holding bobbin in place guide thread into notch (1 ) and then down the slot to the left and guide around into notch (2). . Draw several inches of thread diagonally across the bobbin toward the back of the machine. . While holding thread on outside, close the slide plate allowing thread to extend through the slot between the slide plate and needle plate.

Your machine uses a Class 66 metal bobbin. I can get a bunch of them from eBay--just do a search on Singer 4830.

Belts on sewing machines have what is called a "tensioner." That is a piece--usually at the bottom of the belt--that has (generally) two screws, also generally Allen screws, that should be loosened, but not removed. Once loosened, you can increase the tension on the belt, but it should be adjusted JUST ENOUGH so that the teeth grab. Be very careful not to tighten too much; if you do, you can burn out a bearing over time.

Clean the bottom. The place that nail going into it. You can use Vaccume too.

I can give you instructions but can't download it on here, if you email me [email protected] I will send instructions but remind me of your problem

it sounds like the sewing machine needs to be checked at a sewing machine shop to see if it needs to a adjustment.

here is a free manual for the machinehttp://www.singerco.com/uploads/download/445_4830_4832.pdftry using a new needle--make sure the needle is the right one for the fabricmake sure the top thread has not come off the thread take up levertry using a different bobbinmake sure the bobbin is not over fullmake sure the bobbin is turned the right way in the bobbin case

This machine uses a Singer Class 66 plastic bobbin.

here's a free pdf downloadable manualhttp://www.singerco.com/uploads/download/445_4830_4832.pdfalso change the needle