Tell me about my machine that does not go through problem.  I am really sucking up with threading problem on my Brother. It is going out of position.

Needle and threads are not connecting each other.

 

Can you help me?

There must be button on the machine and needle. If you push that button, this helps you to line up your needle and finally helps you in threading.  

The automatic thread must lined up with the wheel just above in the Brother SE400. If it is not lined up, it may not be working. You have to turn the wheels until make sure that lines are coming together. 

You should make sure that your needle is installed correctly.  The hook which is responsible for catching thread cannot be seen because it is small. 

Please, re-check your needle and its installment. Generally, problem of thread is always associated with needle issue.  

For bringing needle in to right position, you should always push the button for the purpose to make it in right position. Brother occasionally face this needle issue. Also, make sure that, your needle is accurately incorporated.  

And, also look to your auto thread.  On occasion, I also struck in to these problems.