Thread the bobbin winder before you start winding

The bobbin winder on a Brother machine sits on the top right of the machine body. Before you wind any thread, you need to thread the winder itself — this is different from threading the needle. Take your thread spool (the one on the main spindle) and guide the thread to the small tension disc on the bobbin winder. This disc looks like a small metal or plastic slot, and the thread should pass through it. The tension disc controls how tightly the thread wraps onto the bobbin.

Once the thread passes through the tension disc, guide it to the bobbin. The bobbin sits on a small metal post on the winder. Push the bobbin onto the post until it clicks or seats firmly — you should feel it catch. Some Brother models have a bobbin that slides on from the side; check your manual if you are unsure which type you have. The thread should now be wrapped around the bobbin one or two times by hand to anchor it.

Key Takeaways

  • Thread the bobbin winder's tension disc before placing the bobbin on the post, or the thread will not wind evenly.
  • Push the bobbin firmly onto the winder post until it seats completely, or it will slip and wind unevenly.
  • Wrap the thread around the bobbin by hand one or two times to anchor it before you engage the winder.
  • Move the bobbin winder lever or button to the engaged position, then press the foot pedal or start button to begin winding.
  • Stop winding as soon as the bobbin is full — the winder will not stop automatically on most Brother models.

Engage the bobbin winder and start winding

Once the bobbin is seated on the post and the thread is wrapped around it, you need to engage the winder. On most Brother machines, there is a small lever or button near the bobbin winder post. Push this lever or button toward the bobbin — this disengages the main needle drive so the needle will not move while you are winding. If you do not engage the winder, the needle will move at the same time as the bobbin, which wastes thread and can damage the machine.

After you engage the winder, press the foot pedal gently or press the start button if your machine has one. The bobbin will begin to spin. Watch it as it winds — the thread should wrap evenly around the bobbin in neat, parallel rows. If the thread is bunching up on one side or wrapping unevenly, stop and check that the thread is still passing through the tension disc. If the thread has slipped out, re-thread it and start again.

Stop winding when the bobbin is full

Unlike some newer machines, most Brother models do not have an automatic stop when the bobbin reaches full capacity. You have to watch and stop manually. As the bobbin fills, the thread will wrap higher and higher up the sides. Stop winding when the thread reaches the very top edge of the bobbin — if you wind past this point, the thread will be too thick to fit into the bobbin case, and you will have tension problems when you sew.

Release the foot pedal or press the stop button to halt the winding. Then push the bobbin winder lever back to its original position to disengage the winder and re-engage the needle drive. Cut the thread between the spool and the bobbin with scissors. Remove the bobbin from the post by gently pulling it straight off.

Common winding problems and how to fix them

Uneven winding: If the thread wraps in a lumpy, bunched pattern instead of smooth rows, the thread is usually not passing through the tension disc correctly. Stop, re-thread the tension disc, and start a new bobbin. Do not try to fix an unevenly wound bobbin — it will cause tension problems when you sew.

Thread keeps slipping off: The bobbin may not be seated firmly on the post. Remove it, push it back on until you hear or feel it click, and try again. If it keeps slipping, the post itself may be worn. Contact a Brother service center if this happens repeatedly.

Bobbin fills too slowly: Check that the foot pedal is pressed all the way down or that the start button is held. If the machine is running but the bobbin is barely moving, the bobbin may not be engaged properly on the post. Stop and reseat it.

Thread breaks while winding: This usually means the tension disc is too tight. Check that the thread is actually passing through the disc and not caught on the edge. If the thread is threaded correctly and still breaks, the tension may need adjustment — see your manual for the tension disc adjustment screw, though this is rarely necessary on new machines.

When to wind a new bobbin

You need a new bobbin when the one in the machine runs out of thread during sewing. Most sewers wind a fresh bobbin before starting a new project so they do not run out mid-seam. If you sew frequently, it is useful to keep two or three bobbins wound and ready. This way you can swap them out quickly instead of stopping to wind a new one.

Brother bobbins are plastic and reusable — you do not throw them away. If a bobbin cracks or the post hole becomes enlarged, replace it with a new one. Brother sells replacement bobbins in packs, and they are inexpensive. Using the correct bobbin type for your machine model matters, so check your manual or the bobbin itself for the model number if you need to order replacements.

Bobbin winding on different Brother machine types

Most Brother domestic sewing machines — including the Brother XM2701, Brother CS6000i, and Brother SE625 — use the same basic bobbin winding method described above. The winder sits on top of the machine, and you engage it with a lever or button. However, some specialty machines vary slightly. Computerized models may have a start button instead of a foot pedal for winding. Embroidery machines may have a different bobbin type altogether.

If you own a Brother serger, overlock machine, or embroidery-only model, the bobbin winding process may differ. Check your specific machine's manual — it came with a printed guide or you can read a PDF from the Brother website by searching for your model number. The manual will show you exactly where the bobbin winder is and how to engage it on your particular machine.

Frequently Asked Questions

Can I wind a bobbin while the needle is threaded?

You can, but you should not. If you engage the bobbin winder without disengaging the needle drive, the needle will move while you wind, which wastes thread and can bend the needle. Always push the bobbin winder lever to the engaged position first — this stops the needle from moving.

What thread should I use for the bobbin?

Use the same thread as your top thread whenever possible. If you are using a heavy decorative thread on top, you may use a lighter bobbin thread on the underside, but matching thread gives the most balanced stitch. Never use thread that is thicker than the bobbin can hold, or it will not wind evenly.

How full should the bobbin be?

Wind the bobbin until the thread reaches the very top edge of the bobbin spool. If you wind past this point, the bobbin will be too thick to fit in the bobbin case. If you do not wind it full enough, you will run out of thread quickly and have to rewind often.

Why does my bobbin thread keep breaking when I sew?

Broken bobbin thread usually means the bobbin was wound unevenly or too tightly. Wind a new bobbin and make sure the thread passes smoothly through the tension disc. If the new bobbin still breaks, check that the bobbin case is clean and free of lint, and that the bobbin is inserted correctly into the case.

Do I need to oil the bobbin winder?

No. The bobbin winder is a straightforward mechanical part and does not need oil. If it becomes stiff or hard to move, it may have lint buildup — gently clean around the lever or button with a dry brush. If it still does not move freely, contact a Brother service center.