Machine not sewing, fabric does not move underneath the pressurefoot

Is it a new needle? Also make sure that the needle size, tension, thread thickness etc, is suitable for the fabric sewn. Sometimes there is a whole host of lint and threads jammed underneath the needle plate and under that, this could cause that problem too. : -)

increase the needle thread tension

Did you pre-wash the fabric? Sometimes the finish applied at the factory causes problems. Also, be sure to use a ball point needle on knit fabric. Sometimes, using a walking foot, teflon foot, or roller foot will help the fabric move smoother through the machine. It could be that your machine is experiencing a problem with the back-n-forth movement of the stretch stitch. Otherwise, here are more guidelines to review:

30 Best Tips for Sewing Knits with Serger Sewing Machine Serger Pepper

Sewing Spandex Tips

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4 essentials to solve thread tension issues

The scarf is on the needle itself. It is an indentation on the back of the needle above the needle eye where the thread can sit as the needle penetrates the fabric. As the needle penetrates the fabric, the thread sinks into the indentation thereby resisting fraying or pulling on the thread.

The needle attaches to the bottom of the needle bar. The needle bar is the mechanism that moves up and down to drive the needle through the fabric.

All About Needles

Bernette deco 600 diagram Google Search


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Are the feed dogs up? Can you see them moving?
Sew without fabric and you should see the feed dogs moving back and forth under the needle plate. There may be jammed threads in it if it is not moving. Not sure about your machine but most needles plates either flip up or can be unscrewed to check underneath for clogging.

1.check the needle & see if it's bent--if so replace
2.lay the needle on a flat surface & roll the needle over if it doesn't roll true replace
3.check for blunt needle-if needle makes a popping sound when needle penetrates fabric
4.needle is not all way up in holder
on my mechanical sewing machine sometimes the threads come off the take up lever, that causes the thread to bunch up under something I'm working on
also check thread in bobbin

If this machine has a needle position adjustment and it is on the center position -

and you are sewing a zig-zag stitch and using a presser foot with a narrow opening this could break the needle

and the needle plate is a single hole, this will break the needle.

and you are sewing a straight stitch with a new needle and it breaks, the machine needs to go in for servicing.

Hello,
Here are a few things to try.

* Raise your feed dogs if your machine has this feature.

* When you start to sew a seam, hold the upper and bobbin thread tails. Hold them back and out of the way as you sew your first couple of stitches. This will keep them from getting caught in your machine.



* Your fabric may require a different needle. Generally, heavier fabrics require larger needles and thinner fabrics, smaller needles. You may also need a larger needle if you’re sewing through many layers of fabric. And make sure to use a ballpoint needle for knit fabrics and a sharp needle for woven (or a universal needle for either). And make sure your needle is appropriate for the type of thread you’re using.


* Adjust the pressure of your pressure foot, it may be too light for your fabric.


* If your upper thread and bobbin threads are different types, try using the same thread for both. And use a good quality, brand name thread.



* Change your needle plate. Try switching to a needle plate with a smaller hole (a straight stitch needle plate).


Important Note: If you change your needle plate, check to make sure your needle aligns perfectly with this smaller hole before starting to sew. A misaligned needle could hit the plate and break, which could be dangerous. And make sure to change your needle plate back for zigzag and other wide stitches.

Hope this helps.

Several things could be happening. It may be the hook/needle timing. Or it could be the feeddogs are not moving (that's the toothy looking part under the presser foot that moves the fabric). Recommend removing thread and bobbin (needle and presser foot). Slowly move the handwheel and put your finger on top of the feeddogs to determine if they are moving back and forth and are high enough to move the fabric. Check to make sure you had not manually lowered the feed dogs. You may need to take it to an authorized Husqvarna Viking dealer for their assistance. You can find the closest dealer at the Husqvarna Viking website - http://www.husqvarnaviking.com/us