Threading a bobbin on a Brother machine takes about two minutes once you know where the parts are
A bobbin is the small spool that holds the thread underneath your fabric. It works together with the top thread to create a stitch. On Brother machines, the bobbin sits in a case under the needle plate, and threading it is straightforward: you wind thread onto an empty bobbin using the machine's winding mechanism, then place the wound bobbin into its case and pull the thread through a tension slot. The whole process—winding and installing—takes less time than threading the needle itself.
This guide walks you through both steps: winding a fresh bobbin and installing it so your machine is ready to sew. The exact location of parts varies slightly between Brother models, but the principle is the same across their home sewing machine range.
Key Takeaways
- Wind the bobbin first by placing an empty bobbin on the bobbin winder spindle, threading the machine's top thread through the bobbin winding guide, and pressing the foot pedal or using the speed dial until the bobbin is full.
- Remove the wound bobbin and place it into the bobbin case with the thread tail pointing toward the tension slot.
- Pull the bobbin thread through the tension slot in the bobbin case so it sits in the small notch.
- Insert the bobbin case back under the needle plate, making sure it clicks into place.
- If your bobbin is not winding evenly or the machine skips stitches, the bobbin may not be seated correctly or the thread may not be threaded through the tension slot.
Locate the bobbin winder and empty bobbin
On most Brother machines, the bobbin winder is on the right side of the machine, near the top. It looks like a small spindle or post sticking up. Your machine came with several empty bobbins—they are plastic spools about the size of a coin. If you have lost them, Brother bobbins are inexpensive and widely available; check your machine's model number to order the correct type, as some models use slightly different bobbin sizes.
Before you start, make sure your machine is off and the presser foot is up. The presser foot lever controls the tension discs, and raising it opens them so thread can pass through freely during winding.
Wind thread onto the bobbin
Place an empty bobbin onto the bobbin winder spindle. It should sit flat and slide on easily. Take the thread from your top spool and guide it through the bobbin winding guide—a small notch or hook on the machine near the winder. This guide controls how evenly the thread winds onto the bobbin.
Wrap the thread around the bobbin two or three times by hand to anchor it, then hold the thread end lightly. Press the foot pedal or use the speed dial (depending on your model) to start winding. The bobbin will spin and fill with thread. Stop when the bobbin is full—most machines have a sensor that stops automatically, or you will feel resistance when the bobbin is packed. Do not overfill; the thread should form a smooth, rounded dome on top.
Cut the thread and remove the full bobbin from the spindle. Trim the thread tail to about 3 inches.
Open the bobbin case and insert the wound bobbin
Raise the presser foot and needle to their highest positions. On most Brother machines, the bobbin case is under the needle plate. You may need to remove the needle plate first—check your manual for your specific model. The bobbin case is usually a small metal or plastic housing with a hinged or removable cover.
Open the bobbin case cover. You will see a small metal or plastic case inside with a tension slot—a thin vertical opening on one side. Place your wound bobbin into the case so the thread unwinds from the top and the thread tail points toward the tension slot. The bobbin should sit flat in the case.
Thread the bobbin through the tension slot
Pull the bobbin thread gently so it slides into the tension slot. You should feel a slight catch as the thread sits in the notch. This tension slot controls how tight the bobbin thread is during sewing. If the thread does not catch, pull it a bit more firmly—it should seat with a small click or snap.
Leave about 3 to 4 inches of thread tail hanging out. This tail will be pulled up by the needle when you start sewing, and you will catch both the top and bobbin threads under the presser foot before you begin.
Close the bobbin case and find it
Close the bobbin case cover. It should click or snap into place. If it does not close smoothly, the bobbin may not be seated correctly—open it again and check that the bobbin is sitting flat and the thread is in the tension slot.
If you removed the needle plate to access the bobbin case, replace it now. Make sure it is aligned properly and clicks into place. Your machine is now ready to sew.
Troubleshooting a bobbin that will not wind or thread correctly
If the bobbin is not winding evenly—if it looks lumpy or the thread is loose—the thread may not be threaded through the bobbin winding guide. Stop, raise the presser foot, and rethread the guide. The guide is a small notch near the winder; the thread must pass through it for even winding.
If the machine skips stitches or the bobbin thread breaks during sewing, the bobbin may not be seated in the case or the thread may not be fully in the tension slot. Remove the bobbin case, check that the bobbin sits flat, and pull the thread firmly into the tension slot until it catches. Reinsert the case and try sewing again.
If you are using a bobbin that is old or damaged, it may not wind smoothly or hold tension correctly. Brother bobbins are inexpensive; replacing an old one often solves winding and tension problems.
Frequently Asked Questions
Can I use a bobbin from a different brand in my Brother machine?
Some universal bobbins work in Brother machines, but Brother bobbins are designed for the exact tension and fit of your machine. Using a different brand may cause tension problems or skipped stitches. Stick with Brother bobbins for your model to avoid trouble.
How full should the bobbin be before I use it?
The bobbin should be full enough that the thread forms a smooth, rounded dome on top, but not so full that it bulges or the thread is loose. A properly wound bobbin looks neat and compact. If you overfill it, the thread may slip during sewing and cause tension problems.
What if the bobbin thread will not catch in the tension slot?
Pull the thread more firmly toward the slot. The thread should snap into the notch with a small click. If it still will not catch, the bobbin case may be damaged or the tension slot may be blocked. Check for lint or thread bits in the slot and clean it with a small brush if needed.
Do I need to rewind the bobbin every time I change thread color?
Yes, if you want a different color in the bobbin. Wind a fresh bobbin with the new thread color, then install it as described. If you are sewing with the same color on top and bottom, you can reuse the same bobbin until it runs out.
Why does my bobbin keep coming loose from the case?
The bobbin case may not be clicked fully into place, or the bobbin itself may not be seated flat in the case. Open the case, check that the bobbin sits level and the thread is in the tension slot, then close the case firmly until you hear or feel it click. If the case is damaged or the clip is broken, the case may need to be replaced.