When you are making a label for your quilt how do u put a space between the words on a janome qdc4120

See "Z". Apparently there are two spaces with Z.

You will need a darning foot or free motion quilting foot for your machine (these feet are shorter than the regular feet which allows space between the foot and the needle plate to manually manipulate your fabric). Then drop the feed dogs and, if your machine does not have that capability, there should be a cover plate included with your machine that snaps over the feed dogs. Install a brand new needle in your machine, set it for a straight stitch, and test the stitch. Sometimes, the upper tension needs to be loosened a bit so the bobbin thread does not poke through the top of the fabric.

Then...practice, practice, practice...

How to Free Motion Quilt on Regular Sewing Machine

Free Motion Quilting Beginner Tutorial 1 of 4

FWIW, I've found it helpful to use a "Supreme Slider" on the base of my machine. It is slick and allows the fabric to move easily. Special gloves are helpful too because your hand will become dry and begin to slip on the fabric. Using cheap rubber gardening gloves works for some people.

supreme slider Google Search

quilt gloves Google Search

You need to drop the feed dogs, install a darning or free motion quilting foot (make sure the presser foot is lowered). Because you will not be using the machine to move the fabric, the stitch length selection is of no importance. Make sure the stitch width is set to zero. You should test FMQ on a scrap quilt sandwich of the same makeup of your project, ie quilt fabric with batting sandwiched between. The upper tension should be set so that both threads meet in the middle of the quilt sandwich. Because it is FMQ, some extra adjustment may be needed.

Once the tension is where you want it, you can practice FMQ until you can move it smoothly in conjunction with the machine speed.

Practicing on a white board with erasable markers is a handy way to learn to move smoothly. The most difficult part of free motion quilting is learning to move the fabric smoothly. Do NOT lack for practice as that is the only way to improve. Those people who make it look simple have been doing it for years!

How to Free Motion Quilt on Regular Sewing Machine

Free Motion Quilting for Beginners Part 1 Video from Sewing with Nancy

Free Motion Quilting

Learn How to Free Motion Quilt Stippling

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Are you looking for the free motion quilting foot for a Janome?
Here is a link to pictures on the internet; I find not parts for a Janome 5002, only 5001. You need to contact Janome's Service on the Internet.

janome quilting foot free motion quilting Google Search

I could not find an answer for you' Janome seem to have a good website that may answer your question.
Janome com
YouTube has help videos that are interesting but I didn't want to watch all of them for an answer.
Janome 9700 YouTube
I assume that you have the instruction manual but here is the link.
http://content.janome.com/userfiles/file/Inst%20book%20MC9700(En).pdf

See page 5 of the Owner's Manual:

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwi1_ObI8K_KAhVQ7GMKHTNECVsQFggdMAA&url=http%3A%2F%2Fjanome.com%2Fsiteassets%2Fsupport%2Fmanuals%2Feconomy-models%2Finst-book-7318-english.pdf&usg=AFQjCNETNSS3UbZEcBkH9FIWGMpqxsnDNw&cad=rja


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have you tried changing the needle?
have you tried adjusting the top thread tension?
it might be the needle and the thread are not compatable,, the needle may be to light for the thread.
if the suggestions don't help, sew on the sewing machine till it makes the loop and then stop the machine and take it to the repair man and let him see the loop and then ask him why it's making the loop.

it's possible that it could put to much stress on the motor or the motor could be slowly going out

Your question is a little vague... Put simply, here is how to make a quilt. Start by putting 2 pieces of material (good sides together) and sew a 1/4 inch seam. Keep on adding pieces until you have a quilt.

am I right that the feed dogs do not drop on this machine?

Yes, this is correct....but you have to change the needle plate to a thicker one, so the feed dogs will be below the needle plate.