It doesn't stitch properly..........the stitch is very loose.

There could be a few reasons why the stitches on your New Home 910 sewing machine are tight and the fabric is not feeding forward properly. Here are a few things you can try:

1. Check the tension: Make sure that the tension on your sewing machine is properly adjusted. The tension controls how tightly the thread is pulled through the fabric. If the tension is too loose, the stitches will be too loose, and if it is too tight, the stitches will be too tight. You can refer to your sewing machine manual or a tension chart to help you adjust the tension properly.
2. Check the needle: Make sure that you are using the correct needle size and type for the fabric you are sewing. Using the wrong needle can cause the stitches to be too tight or too loose, or it can cause the fabric to bunch or pucker.
3. Clean and oil the machine: Make sure that you are regularly cleaning and oiling your sewing machine to keep it in good working order. Debris or lint can build up in the machine and cause problems with the stitching.
4. Check the feed dogs: The feed dogs are the small teeth that move the fabric through the machine as you sew. Make sure that they are not clogged or damaged, and that they are properly aligned with the needle.
5. Seek professional help: If you have tried these steps and are still experiencing problems with your sewing machine, it may be necessary to seek the help of a professional. A qualified sewing machine technician will be able to diagnose and repair any issues with your machine.

Use a brand new needle that is best suited for the thread weight and type of fabric you are stitching.
All About Needles

Be sure that you ALWAYS RAISE the presser foot when threading the upper thread. This releases the tension disk so the thread will seat properly. Also, if it continues to have loose stitches underneath, tighten the upper tension.

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try these links and see if they can help you

http://www.sewingsupport.com/sewing-how-to/sewingsupport-articles/sewing-machine-troubleshooting-guide/my-stitches-are-coming-out-with-little-loops-in-them.html

sewing machine stitch is loose Bing video

What Causes Loose Understitch in Sewing eHow

Oh You Crafty Gal Sewing Lesson 10 How to Fix Tension on Your Sewing...

http://en.allexperts.com/q/Sewing-3237/loose-stitch.htm

Have you selected the proper stitch. Look at the decorative stitch line 1,2,3,or 4, then the number above the stitch. Your screen should say 1:24 for line one, stitch 24. Make sure you are using the recommended foot. Embroidery unit is disengaged. Then makes sure you have selected the proper weave or thickness of material button. If it still won't sew, try a different type of fabric button and try that. This will change the tension. The tension could be too tight or too loose for that stitch.

Rethread your machine and make sure the thread is properly in the tension disk. Tighten the tension a little at a time once you are sure everything is threaded properly.

If you're getting the bunching of thread on the bottom of your fabric, make sure that you have the machine threaded properly on top. If you pull the thread through the needle with the foot up, you feel little or no resistance. If you put the foot down, the thread should become harder to pull and the needle will bow. If this doesn't happen, the upper tension is not working correctly or is too loose.

you need to make sure your bobbin is still feeding when you are sewing this model has a issue with dropping (ripping) the bobbin thread and then the stitch doesn't hold. you may also need to adjust the thread tightness it may be to tight or to loose

The bottom stitch is affected by the TOP thread tension :) First go back and make sure your bobbin tension is correct since you adjusted it. It should drop slightly when held suspended by danging it by the thread. If it reels out to the floor it is too loose. If it doesn't drop at all it is too tight.

Now that you have that adjusted look at your top tension. If it is loopy on the bottom side of the stitch the TOP tension is too loose. Increase the top tension.

Now take some scrap material and set machine to a wide zig zag, medium length stitch and sew a bit. Compare the top and the bottom sides of the stitch. They should look identical. Remember the TOP side effects the bottom and the BOTTOM tension effects the top side. Adjust accordingly until they look identical with no loose threads or loops and no puckering (puckering means it's too tight).

A. To correct loose stitches, try the following: (1) Balance the thread tension. If the stitches are loose on top of the fabric, decrease the tension to the next lower number. If they are loose on the underside set the tension to the next higher number. (2) Make sure the needle/upper thread follows the threading path. (3) Check to see that the bobbin case is threaded properly. (4) Use a different size needle. For fine fabrics, use a smaller needle (size 9, 11); medium-weight fabrics require a size 14 or 16. And use a size 18 or "Denim" needle for heavy corduroy or denim.

I found a screw on the bobbin case (where you put the cotton for the underside stitching) which was very loose. I tightened it and that created more tension for the bottom thread which solved the problem.