The automatic threader is not working. I believe a spring or other small part in the threader broke. I have tried to thread the machine manually but haven't been succesful. Is the threader replaceable?

to make manual threading of a needle easy buy a needle threader
it is a instrument that has a very fine piece of wire in a loop that you push through the eye of the needle , put the thread in that loop and pull the loop back out of the eye and the needle is threaded
available from most any shop that sells material , cotton , thread or sewing machine shops
cost --pack of 2 for $1.00 or there abouts

Usually you have to manually move the needle up and down until its height matches the threader height. Newer machines have an automatic needle stop that generally matches the threader but most older machines need to be manually manipulated.

HINT: If you do need to manually thread your needle, lick your index finger and then rub the back of the needle's eye. Your thread will literally "leap" through the eye! This works for hand-sewing needles too!

..

Always make sure you rotate flywheel to raise the needle to its highest position before trying to use the threader. additionally the correct needle has to also be used so the threader wire and needle eye line up properly.
Cheers,
Embroidery Services
San Diego, CA

have a pro x and I can't get the thread to catch the bobbin thread, can you help?

Threaders only work with certain combinations of needle and threads. Too small an eye or too big a thread and its a no go. The book should give an idea of the combos you can do. Make sure the needle is inserted completerly up inside that needle clamp.

Do you mean the auto needle threader?

Mine won't work on very small needle sizes so I resort to the old manual needle threader for these. Ditto for twin needles.

Otherwise its a case of pulling the auto threader down so the hook swings into the needle eye, then pulling the thread over the face of the needle and catching it into the hook, then release the threader so it pulls back through the needle eye, taking the thread with it.

The only other thing that springs to mind is "is the needle at the top position in its stich cycle so that the threader lines up with the needle eye?

hope these ideas help a little.

When you activated the threader, the needle was down and the threader came off or broke.

If it is not broken, you may be able to push it back into place.

Turn off the power and tip the machine back on some towels so it does not slip and with a flash light check the area where it fits and see if you can get it back into position.

If not, will have to thread the needle the old fashion way.

Check with your Brother dealer to see if they can look at the machine while you wait.

They may be able to get it back together or they will have to replace the threader.

It is possible they will have one in stock, or they may have to order it.

You need to check to see that there is a small hook going through the eye of the needle when you use the threader. A flashlight or bright light will help. So will a magnifying glass. If it isn't, then no amount of trying will help.
If it goes through the eye, you need to see that your thread hooks into it so that the thread can be pulled through.
sewman7

Needle threaders are generally finicky things. Check to make sure the needle eye is at the correct height for the threader to connect. Gently pull down the threader and wiggle the handwheel slightly to get the needle eye where it needs to be. The threader may have been been bent or slightly rotated so it doesn't connect properly. Also, if you are not aware, a needle threader will usually not work on needles smaller than 80/12 because the eyes are too small.

Admittedly, a needle threader is a very nice function to have. If you find it will not work, there are some things you can do to make manual threading easier. One hint I found that works well is to lick your finger. Swipe it across the back of the needle eye. Then begin with the thread end immediately above the needle eye and gently slide it down to the eye. The needle usually has a tiny groove above the eye that helps guide the thread. The thread tends to jump right through.

...

These machines are nothing but TROUBLE and always will be. Get rid of it. Save yourself much time and frustration.