Having given up on finding the needle "lost" in the bobbin area, I have disassembled the bobbin case and do not remember how to reassemble it. Just two little silver parts that screw in after (I think) the bobbin case is laid in. The main problem being one with a little engraved arrow on it.

hi there.
not sure if the manual will help you out,but go to this link and have a read up.
Singer 2263 Instruction Manual Page 14
or this on a youtube video.
.
How to pull apart and reassemble the bobbin case area on front loading...
or this video.
How to Fix and clean the bobbin case area on your own sewing machine

if none of the above help try this link.
singer sewing machine model 2263 bobbin case is disassembled need...

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

Singer Sewing Machine Needle... Repair Questions - Fixya

www.fixya.com/support/p7766091-singer_sewing_machine_needle_bar

Recent Singer Sewing Machine Needle Bar questions, problems & answers. ... 0 Answers I am having a problem with a Singer Sewing Machine, Model 6268. When I try wind the bobbin it seems as though the needle is scraping the metal area ...

My Singer Curvy 7880 will not wind bobbin. It starts to wind ...

www.fixya.com/.../t24096734-singer_curvy_7880_will_not_wind_bobb...

Apr 12, 2014 - Neec to - Singer Sewing Machines question. ... When I try wind the bobbin it seems as though the needle is scraping the metal area under the ...

I oiled my machine and cannot put the needle plate back on ...

www.fixya.com/.../t24483790-oiled_machine_cannot_put_needle_plate

May 22, 2014 - I have a Singer Sewing machine, Model #6268. .... When I try wind the bobbin it seems as though the needle is scraping the metal area under ...

Repairing a Sewing Machine ' ThriftyFun

www.thriftyfun.com/.../Machines/Sewing_Machines/Repairing-a-Sewing...

My sewing machine keeps jamming, down in the bobbin area. ... If it seems really tight, on the side of your bobbin, there should be a little tiny screw for which you .... Itried everything else first: changed needles, to a brand new spool of thread and bobbinthread, ... My Kenmore sewing machine model 158.16800 freezes.

Do you have some pictures of the area involved. I know how to put these things back but I can't think how to explain it to you.. pics might help me show you.

Brother has an outstanding service department, and if you don't have a manual, they should have one. Should have a pic of how it goes together.

Just a thought check that your needle is in properly it makes a differene

Is the bobbin winder on? If so, turn it off.
Otherwise, is there power to the machine?
And this happened while you were sewing? Cut the thread above the needle eye. Rock the handwheel back and forth firmly to try to cut the thread jam below the needle plate with the sewing hook. If that doesn't work, open the bobbin case area of the machine and try to pull the bobbin case out, cutting any threads you can see with a seam ripper. Still won't come? Take the needle out of the needle clamp and throw it away (it's bent!), and take the screws out of the needle plate (=throat plate) and take the needle plate off after cutting any threads you can reach under the fabric. Keep cutting and pulling out any thread you find, and eventually, you'll be able to turn the handwheel. Clean all the thread bits, lint, and junk out of the area under the needle plate, the bobbin and bobbin case, and the shuttle area... there will be directions in your manual on how to clean the machine, including the shuttle area. Reassemble. Put in a brand new needle, right way around and fully up in the needle clamp. Rethread from scratch.
Always hold the thread ends behind the presser foot for the first couple of stitches of each seam.

See also: http://www.picturetrail.com/sfx/album/view/22521551

Cut the thread above the needle eye and rock the handwheel back and forth sharply to cut the thread with the sewing hook. If that doesn't work pretty promptly, undo the needle clamp and turn the handwheel, which should raise the needle bar. Then get into the bobbin case area and try to remove the bobbin case, cutting any threads you can. Keep rocking the handwheel and trying to pull out the needle (pliers help!), and eventually everything will loosen up.

Next, clean and lubricate the area under the needle plate and the shuttle, and reassemble. Put in a brand new needle, right way around and fully up in the machine. Load the bobbin case with a well-wound bobbin, and rethread the top of the machine and you should be good to go.

Upper thread breaks
needle may be in backwards

Raise the needle bar to the highest point, then loosen the clamp screw

to remove the old needle, place the new needle in the clamp with the flat

side to the back of the machine

Push the needle all the way up to the stop or as far as it will go, then

tighten the needle clamp screw

upper tension may be to tight

the needle may be bent or damaged

thread may be hanging up in bobbin case--check area for loose threads

or lint

Sounds like the bobbin case has shifted inside the rotary hook area. Have you got the manual? if so, does it give directions to remove the bobbin case as part of the cleaning instructions? If you have never taken it out, perhaps take pics with your digital camera to help you put it back in correctly. It is held in by a magnet underneath it. Remove the needle plate, pressure foot and needle, and the bobbin.

Have a good look at the bobbin case, it should have a stopper which sits against a little bump and might have two red marks to line up correctly. Are these lining up or has it shifted a little. If so, then lift out the bobbin case by holding the edge closest to you and lifting it upwards and towards you. Brush the underneath area out carefully to remove any lint or thread bits with your little brush bringing the lint out of the area and into a bin (dont push it around into the area under the rotary hook) and don't blow it out with air. Have a good look at the bobbin case too and check it for any damage, if you dislodge it while stitching the needle can strike it and as its plastic there may be little marks or bits of plastic now, if so, give them a gentle rub with fine grade sandpaper (away from the machine works) or a nail file to smooth off. I found that mine had a couple of holes and the thread was then catching on the rough edge of plastic and jamming constantly. I actually bought a new bobbin case after 3 goes to sort this out.

Now put the bobbin case back into place, lining up the red marks if it has them. Manually turn the flywheel towards you through a stitch sequence, the holder should sit still while the hook goes around it.

Reassemble the machine, rethread and test sew. I hope this helps, if you have tried all this already, then perhaps take it to your Elna dealer for further investigation/service.

Do you have the bobbin thread going the right way, according to owners manual some go clock wise some go counter clock wise when you pull the thread after bobbin inserted in bobbin case