I need to find needles for my necchi model 3101FA in Wisconsin

Unfortunately, it may be difficult to find:

https://www.sewingpartsonline.com/needle-plate-necchi-nz33lg.aspx

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Perhaps one of these vendors can help (you'll probably need to email them):

http://www.sewingpartsonline.com/necchi-sewing-machine-parts-model-list.aspx

Necchi Home Sewing Machines www drdanessmh com

Necchi needle plate

You might also look on eBay:

necchi 549 needle plate

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Search the internet for:

Necchi 3101FA Manual

Sometimes you can get lucky to find one for free.
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Basic Tips for All

1. Always turn the handwheel TOWARDS you (counter clockwise) as turning it in the opposite direction (away from you, clockwise) may knock the timing out requiring repair from a service center.
2. Always be sure your presser foot is in the DOWN position before sewing. Sewing with the presser foot in the up position will cause your thread to tangle and your bobbin to jam.
3. Change needles regularly (after 16 hours of use) as dull/weak needles can cause damage to your machine and fabric. Only use SINGER needles on your SINGER sewing machine.
4. Always be sure you are using the correct bobbin for your machine. Class 66, Class 15 and Class 15J bobbins look very similar. However, using the incorrect bobbin class in your machine can cause damage.

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Q.
How do I thread my 2/3/4/5 thread serger? (14T967, 14T968, 14T957)
Why is my electronic machine beeping? Why won't my machine sew? Why will my machine start to sew then stop?
Q.
How do I sew denim and heavy fabrics?
Q.
Why is my bobbin not winding evenly?
Q.
Why won't my machine pick up the bobbin thread?
Q.
Why is my machine skipping stitches?
Q.
Why is the thread looping/bunching under my fabric?
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Why is the thread looping/bunching on top of my fabric?
Q.
Why doesn't my stitch pattern match what is on my machine?
Q.
How often should I oil my machine?
Q.
What types of thread should I use?
Q.
I can't see the take-up lever? ,,,,,,

try these 2 links for a manual, it should have the information in it you need. you can choose which place to buy the manual from.
Necchi 3101 FA 3102 FB Instruction Manual
Necchi 3101FA Parts

on my 2 necchi's,, I put the needle in with the flat side to the back
of the machine.

here is 2 links for a manual

http://www.sewingpartsonline.com/instruction-manual-necchi-574fb-download.aspx

http://www.sewingpartsonline.com/instruction-manual-necchi-574fb.aspx

Send me an email and I will scan the manual and email it to you. It is not very detailed with the machine being made in China but if you concentrate on the pictures you can eventually figure it [email protected]

Perhaps you have a bent needle? Change the needle, make sure the size of the needle matches the fabric you are working with. Use a size 90 or 100 for Jeans, and a 70 for lighter weight fabrics.
Change your needle frequently! A professional changes after each project, you could get away with 2 or 3 projects. And when you start sewing make sure the threads are under the feet, to the back of machine, don;t start at the raw edge, or you have a bird nest real fast. This is because your machine as an oscillating rotary system. (going back and forth and not in circles) Those systems are more sensitive to jamming. Sorry I could not help you earlier.

It is at the needle screw area. Item #20 on the picture.

http://www.sewingmanuals.com/Sewing_Machine_Manuals/Sewing_Machine_Manual_Pics/Necchi_Pics/Necchi_3101i.jpg