There is threading diagrams for lots of Necchi models at www.sewusa.com, try this link
http://www.sewusa.com/Threading_Diagrams/Threading_Pages/Necchi_Sewing_Machine_Threading/Necchi_523_threading_Diagram.htm
one of them should be similar to yours.
Simple things to try though would be the following:
Is the needle fully into the housing?
Is the needle in the right way? flat shank to the back is the norm. If its around the wrong way the rotary hook can't catch the top thread when the needle is down at its lowest point to make a stitch. So always check this first.
Is the bobbin in the right way and the thread fully into the tension spring. Again refer to the link above for images on how to do this the right way.
If you go through those steps and still can't get the needle to pick up the bobbin thread, then it is possible that the timing is out. In which case probably time to take it to a service man to have this reset. Timing is the sequence between the rotary hook and the needle moving together to form a stitch.
I appreciate your frustration; not all models will be on SewUSA but often the threading up will be ver similiar between models, especially the bobbin. And the top threading will usually be a very similar sequence, thread will run from the spool across to the left and through a thread eye, then usually down through tension, back up to a take up lever which moves up and down, then down to the needle, with a couple of thread guides to keep it lined up. You could try viewing the pages at www.sewing.about.com, this is a free information site and has lots of trouble shooting and general sewing help too. Sorry but not every make and model has free manuals online, most times you will have to pay for a copy of a manual to actually get specific info for your machine. But there are lots of similar machines and I think one of those Necci threading images would be very close to your machine.
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You can get Necchi instruction manual from Necchi website: http://www.sewusa.com/Sewing_Machine_Manuals/Necchi_Sewing_Machines.htm".
Makesure the needle is in the machine correctly- all the way up into the needlebar, make sure that it is threaded correctly, etc. If this all checks out ok,take the bobbin case out of the machine. There are two ears on either side ofthe bobbin case- turn the left one to the left and the right one to the right.Remove the silver ring, and inspect the piece of metal that the ring came off of(looks like a circle with the top cut off). You have to locate the hook whichis the piece that looks like a half moon inside the big round metal piece.Locate the tip of it, turn the hand wheel toward you until the needle is in thelowest position, at this point the tip of the hook should be flush with top ofthe left side of the cut off circle.
Checkwhether underneath thread is looping on the fabric. If so then you've mis-threadedthe top, probably haven't raised the presser foot when threading so you can getthe upper thread into the tension. You need to thread the upper part with thepresser foot up. (You can put it down to thread the needle.)
Not picking up thread can be several issues, like bobbin is miswound, bobbincase isn't snapped in properly, you're using the wrong type bobbin, machine isout of time, needle is bent or burred, machine is dirty and in need of dustbunny eviction and a little oil but most of the time the issue is once againmisthreading: sewing machine needles have a front and a back and they have tobe placed in the needle holder correctly.
In that case your manual is needed, take all the thread offthe machine (yes, spool off the spool pin, bobbin out of the bobbin case), pullthe needle plate and clean your machine thoroughly, using brush and vacuum (notcompressed air) and oiling per the instruction manual. Put it all backtogether, putting in a 80/12 needle, correctly oriented. Hang on to theneedle thread when you fetch up the bobbin thread.
Each and every seam you start is going to be done this way:
1) Pull the tail of the top and bobbin thread behind the presser foot
2) Put the work under the needle and use the hand wheel to lower the needleinto the work
3) Drop the presser foot
4) Holding the thread tails behind the foot, take a couple of stitches.
5) Drop the thread tails and sew normally.
Hope this will help you. Good Luck.
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I am trying to help a lady in a retirement center. I thought the first question was free but somehow ended up paying $12.00 to answer one question! I was unable to get all the info I needed. The web site given for threading instructions didn't seem to go by model #s, so it was a **** shoot trying to guess which threading instrutions I should choose. Please reply.
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