If your machine did not come with a little screw driver, you will need to purchase a r flat tip screw driver. Usually, you can find small screw drivers in an eye glass kits too. Take your needle, your foot, bobbin, etc. all moving parts off and set aside. Then use your screw driver to remove the bottom plate. Sometimes it could be sitting right there you might can turn your machine upside down and you should here where it's at without having to disassemble the whole bobbing casing. I hope this was helpful.
SOURCE: Elna SU missing stiches and breaking thread
it sounds like the needle hook timing is out. You need to get the needle in the lowest position and measure the gap from the needle to the hook point on the bobbin shuttle. It should be 1/4". You will need to remove the foot and foot plate to be able to see. I use a 1/4" drill bit as a gauge. If you need to adjust it, you will need to remove the free arm cover to the right of the foot and loosen the 2 allen head screws that hold the drive gear. Adjust the gap, tighten the screws and retry. Usually if the needle catches the thread to early, it will make a bad stitch and the upper thread will break. If it catches to late, it will make thread loops and the machine will skip stitches. Good luck, these are a good machine and worth fixing. Phil
SOURCE: Old Elna SU (blue on top with black 'Elna' logo)
You take the thread down the left side of the silver wheel and then gently tug it upwards so that it clicks into the wheel. Then pass the thread through the rear of the thread take up lever(this should be raised), from left to right. Then take the thread down and slip it into the thread guide, down slip into the needle clamp and then thread through the needle from front to back.
SOURCE: elna pro4e needs thread spool holder.
You could contact your Elna dealer or buy on of these at a fabric store - http://www.allstitch.com/mediaviewer.cfm?mediaID=12772
SOURCE: How to thread an Elna 2005
Hi. I've searched a number of my sources for a manual for your machine, but the closest I could find is for the 2002-2004-2006 models at http://www.mastersewusa.com/info_elna_2002_2004_2006.html
Threading should be similar enough between your machine and the ones covered in this manual that you can see what's going wrong.
Hope this helps!
Robbie
SOURCE: I just inherited an Elna
You need to pull them up from the retractable position for storage and transport, many Elnas have the retractable thread spools like this to protect them from breakage.
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