How do I put the bobbin in - Necchi 3102 Mechanical Sewing Machine

It is probably one of two things,
1st..always put the needle plate on before you install the bobbin case. You can lock the bobbin case down by putting the needle plate on after putting the bobbin case in. Take off the plate and remove the bobbin case, install the needle plate, then install the bobbin case.
2nd...your bobbin case may be damaged now, if it is scratatched or chipped get a new case.

Good Luck

You should first make about 10 wraps manually with the thread around the bobbin before putting it on the machine to wind the bobbin--continue to hold the thread tail for a few seconds after you start the machine so the thread will not slip off the bobbin. Some people will put the thread tail through a hole in the bobbin, put the bobbin on the pin and wind with the machine. The only problem with that is if your machine is finicky (like some computerized model), any thread hanging outside the bobbin may cause the machine to malfunction.

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Real Important: The objective is to even the top and bobbin tensions equally.
1. Remove bobbin case. Put bobbin in (rotating counterclockwise).
2. Put thread under the tension plate. Let the bobbin hang from finger and bob up and down lightly.
3. Adjust tension. The bobbin should extend one inch every time it is bobbed.
4. Put one drop of oil on race the bobbin case sets on top of. Replace the bobbin case and bobbin.
5. With the pressure foot up thread the top and give little tugs as you do this. There should be no snags or resistance. Make sure the thread goes in between the tension disc.
6. Now, put pressure foot down. Give a little tug to see if there is a resistance. Set the tension to four is a good start.
7. Try a piece of rag to sew. Set the tension on top to adjust for a perfect stitch.

Hai, I think you put the big size bobbin. So only jumping the bobbin. Please try to put the correct size bobbin.

I have a 241-12 Singer. New to me. It was running great. Then the bobbin thread ran out. Put in one prewound bobbin that came with it, even though the bobbin appeared different. The bobbin thread didn't feed and the machine jammed up. I finally wound the old bobbin and put it in. It will only feed about 6" of thread before the bobbin thread breaks. It becomes so tight I can't get it to feed. Both bobbins will not feed. However I don't believe it's the bobbin tension because thread will pull through fine when pulled manually (if it hasn't been in the machine yet). What am I doing wrong?

Hi there,

Well you may please follow the steps below -
1. Remove the bobbin from the sewing machine. Note: whether you have a drop-in, front or side-loading bobbin on your sewing machine. A drop in bobbin will load from the top, may be via a removable bobbin case cover near the machine-fed dogs. A side or front loading bobbin needs to be loaded into a removable bobbin case under the machine.
2. Choose the right size bobbin for the sewing machine.
3. Wind thread onto your bobbin. Your sewing machine should have a standard thread spool to hold the thread and a short, squat post wide enough for a bobbin.
4. Put the thread and empty bobbin into position on your sewing machine. Wrap the thread around the bobbin to start it. On most machines, disengage the needle by turning the smaller hand-wheel on the machine toward you. Push the bobbin post into position, securing the bobbin into place. Press gently down. Thread should begin to wind neatly onto your bobbin.
5. Break the thread, push the bobbin post back into an inactive position and remove the bobbin. Tighten the hand-wheel. Thread your sewing machine again if necessary before loading the bobbin.
6. Remove the bobbin case cover and put the bobbin into position. The thread should slide through a catch on the bobbin case and up through the cover.
7. Access the bobbin case for a front or side mount bobbin. Lift the catch and remove the removable bobbin holder. Put the bobbin into the holder and run the thread through the holder, bringing it to the front. Lift the catch and slide the bobbin holder back into the case. Hold your needle thread gently forward with your left hand and turn the hand-wheel. The needle thread will pass down into the machine and catch a loop of the bobbin thread. Pull this loop up and slide both threads to the back before beginning to sew.
Good Luck!!

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put the bobbin in its case then pull some thread out and pass it thru the bobbin case slot and under the tension spring .. put the bobbin and case over the shaft that is in the main unit .. the open side of the case goes in first .. make sure the bobbin doesnt fall out .. rotate the bobbin case until its finger lines up with the notch in the main case .. the bobbin case should latch in place on the shaft notch .. place the top thread under and to the back of the pressure foot then turn the machine one turn .. that will loop the top thread around the bottom (bobbin) thread ... now use a card or screwdriver to push both threads from under the pressure foot toward the back of the machine ..

The bobbin fits into a bobbin case (holder), the bobbin case is what you take out to put a new bobbin in. The bobbin case fits into the hook (it has a spindle in the center) which you do not take out of the machine unless you are doing maintenance. If you just ordered a bobbin holder, it could be for another machine. you must get a case made for the machine, a generic one will not work.

most likely you do not have the correct bobbin that fits on the bobbin pole.

on the bottom of the pole there may be a small knub in which the small hole on the bobbin should slip onto this holds the bobbin in palce, (if the wrong bobbin is used and if could be just a slight difference in the boobin ) the pole will not spin correctly and not fill the bobbins,

I have seen different bobbins with the same machine with such a slight difference that the owner did not realize it.

The bobbin winder question is a frequent one and it is very easy to solve. If you look at the shaft where the bobbin sits on the bobbin winder, you will notice that it has a slot in the middle of the shaft, an opening if you will. This is where you use a flat screw driver and open that space more to give more friction to the bobbin so it is not loose on the shaft. That slot was made for that. There are different bobbins on the market so thats why the slot is there. If it is too tight, grab a pair of pliers and close the gap. The metal of the bobbin winder on that shaft is malleable exactly for this reason. No need to put plastic bag material or anything like that. Use it as it was intended for.