I bought a 2nd hand Necchi Lydia3 544.Tried stiching but needle thread keeps breaking. Could thread quality have anything to do with it?

1. Check the thread: Make sure you are using a good quality thread that is appropriate for the type of fabric you are sewing. Poor quality thread or thread that is not suitable for the fabric can cause shredding and breaking.
2. Check the needle: Make sure you are using the correct size and type of needle for the fabric you are sewing. A bent or damaged needle can also cause thread shredding and breaking.
3. Check the tension: Check the upper thread tension to make sure it is set correctly for the type of fabric you are sewing. If the tension is too tight, it can cause the thread to shred or break.
4. Check the threading: Make sure the upper thread is threaded correctly and that there are no tangles or knots in the thread path.
5. Check the presser foot: Make sure the presser foot is properly installed and that the fabric is being held firmly in place while you sew.
6. Check the machine settings: Double-check that the machine is set to the correct stitch length, stitch width, and other settings for the type of fabric you are sewing.

If you have tried these steps and are still experiencing issues, you may want to consult with the technician who serviced your machine

The problem most likely is not the bobbin. The problem is the top thread. If thread is knotting, tangling under the fabric, it is a top thread problem.

Remove the top thread from the machine. ALWAYS RAISE the presser foot and rethread from the beginning.

If there are still thread clumps under the fabric, you will need to increase the top tension. (The extra thread appearing under the fabric is excess top thread hanging up under the fabric.) You may need to keep adjusting the top tension until both top & bobbin threads meet in the middle of the fabric.

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Be sure you are using the correct needle for stretch fabric.

All About Needles

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&ved=0ahUKEwjmkeKwzpbOAhVPVWMKHVBjAAQQFgg3MAQ&url=http%3A%2F%2Fwww.schmetzneedles.com%2Flearning%2Fpdf%2Fschmetz-needle-chart.pdf&usg=AFQjCNHTR52AmqwzvyCjbXmD5Ch52Va5_Q&cad=rja

Set your machine for a zig-zag (or stretch stitch if you have it) to accommodate the fabric stretch.

Use a good quality thread. Avoid old or bargain bin threads. Cotton thread will break easier than polyester.

You may need to adjust the tension for the fabric.

How to Sew Knits and Stretch Fabrics with Sewing Machine

3 Things To Know Before Sewing With Lycra SewsNBows

Sewing Spandex Tips

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Have you tried loosening the upper tension? Remove the upper thread, RAISE the presser foot and rethread from the beginning (make sure it follows the correct thread pathway). Sometimes the upper thread jumps out of a thread guide or wraps around something. Or try a different brand of thread? Avoid old or bargain bin threads--use good quality thread. Could also be the incorrect needle for the thread/fabric, ie thread too large for the needle eye.

Sewing Machine Thread Keeps Breaking

NMSU Checklist of Common Machine Troubles

Why Does My Thread Keep Breaking While Sew

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Search the internet for:
Manufacturer + Model + the word "Manual"

or search YouTube videos for "sewing machine threading." You may not find your exact machine, but many machines have similar threading patterns. Be sure to raise the presser foot before threading the upper thread so it will seat properly in the tension disk.

If the thread is breaking at the needle, it could be several problems:
Threaded incorrectly--#1 cause
Upper tension too tight
Install a brand new needle compatible with the fabric & thread
Make sure the thread is not too large for the needle eye
Avoid old, fuzzy, bargain bin thread

All About Needles

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Skipped stitches
1. The needle is not inserted correctly
Remove needle & reinsert needle( flat side towards the back of machine)
2. The needle is damaged
replace with new needle
3. The wrong size needle is being used
Choose a needle to suit the thread & fabric
4. The foot not attached correctly
Check & attach correctly

The tread only breaks in the needle. what can i do . i don't get to sew anything . I tread the needle and get everything ready and start the machine and as quickly as that the tread is broken and the machine has not sewn at all.

Try changing threads. If you're not using embroidery thread specifically, the "treatments" they use on different threads can really cause problems.

This may be of help:

How to Thread Necchi Sewing Machine

Even though your machine is probably a different model, machines generally thread the same.

Something that may help is ALWAYS RAISE the presser foot when threading the top thread. This allows the thread to seat fully in the tension disk and helps eliminate those loose threads under the fabric.

If the bobbin thread still just lays on the fabric, the top tension is too loose. Tighten the top thread tension so it will pull the bobbin thread up into the fabric. Tension is a tug-of-war between the top and bobbin threads. Neither should win nor lose. Tension is accurate when both threads meet in the middle of the fabric. Also, keep in mind that tension is not static, ie it will most likely need to be adjusted whenever you begin a new project because the thread, fabric, needle, and stitch selection can change the tension.
http://www.threadsmagazine.com/2008/11/02/understanding-thread-tension

You shouldn't need a separate spool for the top thread if your machine has the vertical spool pin. Most spools will work unless you are trying to use the huge spools that are made for sergers. In that case, you can wind thread onto a bobbin and then use the loaded bobbin as your top thread--in effect, you would wind 2 bobbins, one for the bobbin thread and one for the top thread. If my thread spools are taller than the spool pin (causing the spool to flop around when I stitch), I simply slip a plastic drink straw over the spool pin and, Voila!, the spool pin is taller than the thread spool.

Another helpful hint: AVOID using old or bargain bin threads. Quality thread will limit a lot of sewing problems and frustration.

Install a brand new needle every 8 hours of sewing time. Frequently, problems are a result of using old, damaged, or dull needles. When having problems, the first course of action is replace the needle. A lot of time can be spent trying to find resolutions to a problem when a brand new needle is all that's needed. If you hear the needle strike something strange, it's probably best to replace the needle as it has probably been damaged or bent. A hard strike of the needle can knock the machine out of time which would require a visit to the service repairman.

Second step to problem resolution--rethread the machine. Remove the thread completely from the machine and start over from the beginning. Verify the thread path is correct.

Also, using the correct needle type and size for the project is important. Don't use needles whose eyes are either too small or too large for the thread. Use a needle made for the type of fabric and project. Use embroidery needles when embroidering, use ball point needles for knits, use sharps (universal, microtex...) for woven fabrics, leather needles for leather, denim needles for denim/heavy fabric, etc.
https://www.schmetzneedles.com/all-about-needles/

Last but NOT least, perform maintenance on your machine every 8 hours. Clean lint and loose threads from the bobbin area, the feed dogs, and under the needle plate. OIL (use good quality sewing machine oil) and apply just a drop or two every place according to the manual. Do NOT use 3-in-1 oil, cooking oil, motor oil, WD40 or any oil other than fresh, good quality sewing machine oil!

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hi! there wind thread on bobbins winder 4 times by your hand rotate clockwise,insert in shaft bobiins winder on top of your machine near hand wheel push latch to engage loop thread on disc winder tension start your machine on pedal foot automatically winder disengage if already filled up of thead pull this winder and insert to bobbins casing insert thread to slot and pull out winder should rotate clockwise as shown.insert on shuttle hook casing and close cover needle plate.next thread your upper

threading tension as shown on red threading from spool pull threading and loop to dial tension threading and insert thread to lever needle and to needle hole tip. pull tread under the needle foot and feeder tooth.rotate hand wheel counter clockwise to hook up thread bobbibs and appear at top of needle plate,teo thread shoul appear,set dial tension to # 3 and stich to # 8 range to # 12 depend on fabric and layer of fabrics and set on straight stich sewing,let needle on upper position insert fabric for trial sewiing.put down foot needle lever. manually by hand rotate for assurance needle is free to sew if obtruction on loop bobbins thread occurs adjust all tension gradually then try again until free from sewing w/o problem star sewing.