Modle 8072 bobbin thread won't engage machine makes cick-clack noise when I press on presser foot

Threading the Baby Lock BL2400 sewing machine can be done by following these steps:
1. Raise the presser foot: Lift the presser foot lever to raise the presser foot.
2. Thread the upper thread: Take the thread spool and place it on the spool pin at the top of the machine. Follow the numbered threading path indicated on the machine or in the instruction manual. Typically, the thread will go through a series of thread guides, tension discs, and the take-up lever. Make sure the thread is properly seated in each guide and tension disc.
3. Thread the needle: Thread the thread through the needle from front to back. You can use the automatic needle threader if your machine is equipped with one, or manually thread the needle by holding the thread with one hand and passing it through the needle eye.
4. Load the bobbin: Wind a bobbin with the desired thread and place it on the bobbin winder spindle on top of the machine. Follow the specific instructions for your machine model to wind the bobbin correctly. Once the bobbin is wound, place it in the bobbin case and thread the thread through the appropriate guides or tension mechanism, ensuring the thread is properly engaged in the bobbin tension spring.
5. Insert the bobbin: Insert the bobbin case into the machine's bobbin compartment, making sure it is securely in place. Follow the threading path indicated on the machine or in the manual to ensure the bobbin thread is correctly threaded.
6. Bring up the bobbin thread: Hold onto the top thread with your left hand and turn the handwheel toward you with your right hand to lower and raise the needle. As the needle rises, a loop of the bobbin thread will appear above the needle plate. Gently pull the top thread to bring the bobbin thread loop up through the needle plate.
7. Pull both threads to the back: Hold both the top thread and bobbin thread together and gently pull them toward the back of the machine, ensuring they are out of the way of the needle.
8. Perform a test stitch: Once you have threaded the machine, insert a fabric scrap under the presser foot and lower the presser foot lever. Select a straight stitch or another desired stitch on the machine and slowly begin sewing to test the stitching.
Remember to consult your Baby Lock BL2400 instruction manual for specific instructions and diagrams related to threading and operating your particular machine. It will provide you with detailed guidance tailored to your machine's features and functionalities.

OR you can watch the video below

Here are the steps to thread a Euro-Pro 382 sewing machine:

1. Raise the presser foot lever to release the tension discs.
2. Place the thread spool on the spool pin and slide it to the right until it clicks into place.
3. Pull the thread end from the spool and insert it through the thread guide located at the top of the machine.
4. Pull the thread down through the tension discs, then wrap it around the bobbin winding tension disc located on the top left of the machine.
5. Insert the thread end through one of the holes on the bobbin and push the bobbin onto the bobbin winding spindle.
6. Push the bobbin winding spindle to the right to engage the winding mechanism. Hold the thread end and press the foot pedal to start winding the bobbin.
7. When the bobbin is full, cut the thread and push the bobbin winding spindle back to the left.
8. Remove the bobbin from the spindle and place it into the bobbin case.
9. Hold the thread end and turn the handwheel towards you to raise the needle to its highest position.
10. Pull the thread from the bobbin case and insert it through the thread guide located above the needle.
11. Thread the needle from front to back and pull the thread out about 6 inches.
12. Lower the presser foot lever to engage the tension discs and pull the thread towards the back of the machine.
13. Hold the thread end and turn the handwheel towards you to take up the bobbin thread.
14. Close the bobbin cover and you're ready to start sewing.

Check that top thread tensioner is engaging.

After threading top thread, with presser foot up, rotate tension selector to 4. Then move presser foot down (this engages top thread tensioner). Make a slow steady pull of the top thread. Compare tension to when foot was up (no tension) to foot down (selected tension). If you move presser foot up and down while slowly pulling the top thread, you should feel the change from no tension to selected tension.

If you find there is no tension on the top thread, the top thread will loop and nest on bottom side of fabric. Rethread top thread per machine instruction. If still no top thread tension, either the tensioning mechanism has failed or it has not threaded properly.

Once you have verified the top thread tensioner is working, you need to check bobbin thread tension. Make a slow steady pull on the bottom thread. You should feel tension similar to the top thread with tension selector set to 4 and foot down. If the bottom thread tension feels loose, similar to top thread presser foot up, then likely the bottom thread has escaped the bobbin case tensioner. Reload bobbin and recheck bobbin tension.

The manual may be helpful:

Brother CS 8072 Operation Manual

be sure to ALWAYS RAISE the presser foot when threading the top thread.

How to Thread Brother CS 8072 Sewing Machine eHow

http://support.brother.com/g/b/faqend.aspx?c=us_ot&lang=en&prod=hf_cs8072eus&faqid=faqh00000485_000

Are the feed dogs fully up and clean?
With the unthreaded machine transport a piece of paper with the feed dogs?
Is there a presser foot pressure adjustment? -- if so, it may need tweaking.
Do you have a tangle of thread under the needle plate (= throat plate) or hook and bobbin case area?
Do you have the stitch length set to greater than 0?

Top thread problem, Not enough tension on top=loops on the bottom of the fabric; too little tension on the bottom = loops on top of the fabric. Yes, I know it seems backwards. See: http://www.picturetrail.com/sfx/album/view/22521551
Dollars to donut holes, you either threaded the top of the machine with the presser foot down (it has to be UP to let the thread into the top tension), or you're trying to sew with the presser foot still up (which is an issue common to people trying to sew bulky seams).

Take the thread off the top of the machine, take out the bobbin case and give the machine a cleaning, rethread the machine, fetch up the bobbin thread and hold the bobbin and top thread ends together under and behind the presser foot for the first 2-3 stitches of each seam.

Raise the presser foot and turn the hand wheel to put the needle at the highest position. Next open the slide plate by sliding it towards you. Make sure the bobbin is empty (remove any remaining thread or use a new bobbin). Slide the plate forward (partially closed) so that the arrow on the plate lines up with the arrow on the machine bed. Bring the thread from the needle under the presser foot and wind it around the presser foot screw (on the left of the assembly) once. Make sure that the thread is in the spring groove. Press the One-step Button hole A button (has a bobbin symbol by it). Then begin running the machine. Watch the winding process carefully and stop when you have enough thread on the bobbin. Do not let the thread continue to wind past the outermost line on the bobbin (black). Slide the plate fully closed and raise the needle. Pull the thread to the back of the machine to a length of 4" and cut the thread in the middle of the loop you just pulled through.

Now position your fabric under the presser foot, lower the presser foot and select your stitch. Begin sewing.

The manual is available for sale or download here: http://www.singerco.com/accessories/instruction-manuals/search . Just enter the model number. The direct link is: http://www.singerco.com/uploads/download/1272_6268-_-6268_6267-wholeas-of-6_23_05-special.pdf . Pictures for winding the bobbin are on page 16 (page 18 of the PDF).

I hope this helps.

Cindy Wells
(make sure that the machine is correctly threaded before starting to wind a bobbin)

It is your top threading, totally rethread, then with presser foot up, pull on top thread, it should feed smoothly, now put the presser foot down, pull thread, it should barely move. This should seat the thread in the tension discs.

The bobbin case is not in the shuttle.

Raise the needle to it's highest position.

Lift the lever on the back of the bobbin case and hold it open as you insert the case into the shuttle; arm on the case pointing up. You may have to turn a bit to the left or right - it will click when in place.

It sounds like you are not threading the machine properly. The best way is to make sure the presser foot is in the up position. This keeps the tension disc open and the thread slides into the tension easier. Also make sure you have the bobbin in and threaded correctly into the bobbin case.