I have a sewing machine-single needle model 03914, but I don't how to put the needle for delicate fabric and for thick fabric?

Make sure you're using the correct size needle for the fabric you're sewing.
Delicate / Very light weight.... china silk, fine lace, organza....size 8 or 9 .....Light weight taffeta, lining fabric, thin velvet, synthetic sheers size 9, 10 or 11.... Medium weight cotton nylon, crepe, knits, flannel, spandex, linen, poplin, wool, muslin size 12 or 14..... Heavy weight fleece denim, leather, vinyl upholstery fabric size 14 or 16....Very heavy weight ; heavy canvas ; thick leather size 16 or 18

Difficult to say since we don't know anything about the leather. Generally, a soft, thin leather can be sewn on a domestic machine. However, a thick leather will cause problems. A domestic machine does not do well stitching thick leathers/fabrics. Usually, leather stitching will require a heavier needle, ie a leather/denim needle, which is a size 16. Frequently, manufacturer recommendations limit serger needles to no larger than a 90/12 needle. Using a needle that is too large could strike resulting in broken parts or knocking the machine out of time. Also, sewing thick fabrics places undue stress on the machine. It can cause gears to break or the motor to overheat and burn out. Be aware that a serger trims the fabric as it stitches, so there could be issues with the knives trying to cut the leather.

Guess I am somewhat confused why you would want to use a serger to stitch leather. Normally, a sewing machine that stitches one single line of thread is sufficient for leather. Overlocking uses multiple threads which increases the thickness of the seam.

If you cannot get thick fabric under the needle, it is probably too thick to sew with your machine.

That is the wierdest error message I've ever seen on a sewing machine. Did you try a brand new needle? Are you sewing thick fabric (does the message appear when sewing light-weight fabric? Remove the bobbin case from the machine and check for thread wrapped somewhere. If you are not able to find an answer on your own, then it's probably best to take it for service.

Janome MC10000 Warning Machine Wont Sew

On what

Feed dog lever should lower the feed dogs, these are the teeth that grip and move the fabric foward and backwards as the needle goes up and down, they are under the needle plate.

Only time you would lower the feed dogs is if you want to do free motion embroidery or darning perhaps.

So no, don't touch for normal seam stitching. If you are sewing very heavy fabric you may want to lessen the pressure on the presser foot a little (if your machine has this adjustment it will be a knob on top of the head above the pressure foot area).

You may find that your machine doesn't really like very thick fabrics. Sewing something like upholstery weight with a domestic machine is pretty ambitious; an industrial strength machine is best bet.

Hello,
Here are several things to try.

* When you insert your new needle, make sure it’s positioned correctly (usually with the flat side away from the bobbin, but consult your manual), that it goes all the way into the holder, and that the screw is securely tightened.


If there doesn’t seem to be a problem with your needle, try the following:

* Check your pressure foot and make sure it’s attached securely.


* Change your pressure foot Your pressure foot may be bent, causing your needle to hit it.


* Don’t sew over pins a needle that hits a pin can break. Always remove the pins from your fabric before they reach your needle.


* Don’t pull your fabric as you sew. You could be bending your needle back, causing it to hit your needle plate instead of going into the hole. Just guide your fabric, letting it feed on its own.


* Check your needle plate and make sure it's securely in position.


* Change your needle plate. If you’ve been using a straight stitch needle plate (a plate with a small hole, often used for sewing fine, delicate fabrics), switch to a needle plate with a wider hole.


* Check the position of your needle. Sewing machines with zigzag capability allow you to adjust the position of your needle – right, left, or center. If your needle is not positioned correctly, it may be hitting your needle plate or pressure foot.


* Un-thread your machine and remove your bobbin. Clean any loose thread or lint out of your
bobbin case. Re-thread your machine, reinsert and re-thread your bobbin.

* Change your bobbin. There could be a nick along the edge of your bobbin spool that’s catching your thread as you sew.

Also, before 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.

I hope these solutions help you.

Hello,
Here are some solutions to try.

* When you insert your new needle, make sure it’s positioned correctly (usually with the flat side away from the bobbin, but consult your manual), that it goes all the way into the holder, and that the screw is securely tightened.


If there doesn’t seem to be a problem with your needle, try the following:

* Check your pressure foot and make sure it’s attached securely.


* Change your pressure foot Your pressure foot may be bent, causing your needle to hit it.


* Don’t sew over pins a needle that hits a pin can break. Always remove the pins from your fabric before they reach your needle.


* Don’t pull your fabric as you sew. You could be bending your needle back, causing it to hit your needle plate instead of going into the hole. Just guide your fabric, letting it feed on its own.


* Check your needle plate and make sure it's securely in position.


* Change your needle plate. If you’ve been using a straight stitch needle plate (a plate with a small hole, often used for sewing fine, delicate fabrics), switch to a needle plate with a wider hole.


* Check the position of your needle. Sewing machines with zigzag capability allow you to adjust the position of your needle – right, left, or center. If your needle is not positioned correctly, it may be hitting your needle plate or pressure foot.

Hope this helps.

Hello,
Here are some things to try.

* Your broken needles may have been too thin for your fabric. Make sure your replacement needle is appropriate for the weight and type of your fabric and thread. You may also need a thicker needle if you’re sewing through bulky layers of fabric.

* When you insert your new needle, make sure it’s positioned correctly (usually with the flat side
away from the bobbin, but consult your manual), that it goes all the way into the holder, and
that the screw is securely tightened.


If this doesn’t seem to be the problem

* Check your pressure foot
Make sure it’s attached securely.

* Change your pressure foot
Your pressure foot may be bent, causing your needle to hit it.

* Don’t sew over pins
A needle that hits a pin can break. Always remove the pins from your fabric before they reach your needle.

* Don’t pull your fabric as you sew
You could be bending your needle back, causing it to hit your needle plate instead of going into the hole. Just guide your fabric, letting it feed on its own.

* Check your needle plate
Make sure it's securely in position.

* Change your needle plate
If you’ve been using a straight stitch needle plate (a plate with a small hole, often used for
sewing fine, delicate fabrics), switch to a needle plate with a wider hole.

* Check the position of your needle
Sewing machines with zigzag capability allow you to adjust the position of your needle – right, left, or center. If your needle is not positioned correctly, it may be hitting your needle plate or pressure foot.

I hope this helps.

it may be that your motor belt needs tighening or the belt may be damaged - you can check belt and adjust tension yourself once side cover is removed.

if you are sewing thick seams and the needle is resting on the seam as you begin to sew you may have to help the machine to get started. if the fabric is not thick it must be belt tension.

scott.