Start with the manual and a clean machine

Before you thread anything, read the manual that came with your machine. Every model is different — the bobbin goes in a different place, the presser foot works differently, and the tension dial means something different depending on the brand. If you don't have the manual, search the manufacturer's website by model number; most post PDFs free.

Clean out the machine first. Lint and dust collect inside, especially around the feed dogs (the metal teeth that move fabric under the needle) and the bobbin area. Use a small brush — many machines come with one — to sweep out loose fibers. A can of compressed air works too, but use short bursts and hold the machine so dust falls away from you, not into the motor.

Check that the presser foot is up. This opens the tension discs so thread can pass through them smoothly. If the presser foot is down, the discs clamp shut and thread won't feed properly.

Key Takeaways

  • The presser foot must be up before you thread the machine, or thread won't seat in the tension discs.
  • Wind the bobbin on the machine's winding post, following your manual's diagram for which direction the thread wraps.
  • Thread the top with the presser foot up, following the path marked on your machine — usually down the left side, through guides, and into the needle from front to back.
  • Insert the bobbin into its case with the thread tail pulled through the slot, then snap the case into the machine.
  • Bring up the bobbin thread by turning the handwheel toward you while holding the top thread, then pull both threads to the back before sewing.

Wind and insert the bobbin

The bobbin is the small spool that holds thread underneath the fabric. Most machines come with empty bobbins and a winding post on top of the machine. Check your manual for the correct bobbin type — they vary by machine, and using the wrong one can jam the mechanism.

Place an empty bobbin on the winding post. Thread the machine's bobbin winder by following the path shown in your manual — this usually means wrapping thread around a tension guide on the winding post. Holding the thread end, press the bobbin against the winding wheel (a rubber wheel on the side of the machine). The wheel spins and winds thread onto the bobbin. Stop when the bobbin is full; most machines have an automatic shutoff that stops the wheel.

Once the bobbin is wound, remove it and trim the thread tail. Insert the bobbin into the bobbin case — a small metal or plastic holder that sits under the needle plate. The thread tail should pass through the slot in the case; pull it so it sits in the tension spring. Snap the case back into the machine, making sure it clicks into place.

Thread the top of the machine

With the presser foot still up, place a spool of thread on the spool pin at the top of the machine. The thread should unwind toward you, not away. If your machine has a horizontal spool pin (thread sits flat on a pin), use a spool cap to hold it in place.

Follow the threading path marked on your machine. This path is usually printed or embossed on the machine body and shows exactly where thread goes. Typically, thread runs down the left side, through one or more guides, through the tension discs (a pair of metal discs that grip the thread), through more guides, and finally into the needle from front to back. The needle eye is small; use a needle threader if your machine has one, or hold the thread steady and push the needle eye onto it rather than trying to push thread through.

Pull about 6 inches of thread out behind the needle. This gives you slack to work with when you bring up the bobbin thread in the next step.

Bring up the bobbin thread

Hold the top thread loosely in one hand. With your other hand, turn the handwheel (the large wheel on the right side of the machine) toward you — one full rotation. This lowers the needle into the bobbin area and brings the bobbin thread up through the needle plate.

When you turn the wheel back toward you, the needle will catch the bobbin thread and pull a loop up. Gently pull on the top thread to bring the bobbin thread all the way through. You should now have both threads — top and bobbin — coming up through the needle plate.

Pull both threads toward the back of the machine, under the presser foot, and to the side. This prevents them from tangling when you start sewing. Some machines have a thread guide or clip at the back to hold threads in place.

Set tension and stitch length

Tension controls how tight or loose the thread sits in the fabric. Most machines have a tension dial on the front, numbered from 0 to 9 or labeled with a range. Start at the middle setting — usually 4 or 5. You can adjust this later if stitches look wrong.

Stitch length is how far the machine moves fabric forward with each stitch. Most machines have a dial or lever marked in millimeters or with numbers. Start at a medium setting, around 2.5 to 3 millimeters. Shorter stitches (1 to 1.5 mm) are for detailed work or topstitching; longer stitches (3.5 to 4 mm) are for seams in heavier fabric or basting.

Select a stitch pattern. Most machines have a dial or touchscreen showing different stitch types — straight stitch, zigzag, decorative stitches, and others. For your first project, use the straight stitch, which is the most common and reliable.

Test on scrap fabric before your project

Cut two small pieces of fabric — something you don't mind ruining — and stack them. Place them under the presser foot so the needle is about half an inch from the edge. Lower the presser foot. This closes the tension discs and engages the feed dogs.

Turn the handwheel toward you to lower the needle into the fabric, then press the foot pedal gently. The machine should move fabric forward and create a line of stitches. If the machine makes noise but doesn't move fabric, the presser foot may not be down. If stitches look loose or tight, adjust the tension dial slightly and test again.

Sew a few inches, then lift the presser foot and pull the fabric toward you to remove it. Trim the threads with scissors. Look at the stitches: they should look even and sit in the middle of the thread. If top thread is visible on the bottom or bobbin thread shows on top, tension needs adjustment — consult your manual for which direction to turn the dial.

Maintain your machine between projects

After each project, brush out lint from the bobbin area and feed dogs. This takes 30 seconds and prevents jams and skipped stitches. Store the machine in a dust cover or bag to keep lint out.

Change the needle every 8 to 10 hours of sewing or after hitting a pin. A bent or dull needle causes skipped stitches and can damage fabric. Needles are cheap — a pack of 10 costs a few dollars. Keep the same needle size and type your machine came with until you learn to match needles to fabric weight.

Oil your machine only if the manual says to do so. Many modern machines are sealed and don't need oil. If yours does, use only sewing machine oil — never household oil — and explore just one or two drops in the spots the manual shows.

Frequently Asked Questions

What if the needle won't go through the fabric?

The needle may be bent, dull, or inserted backward. Remove it, check that it's straight, and reinsert it with the flat side facing the correct direction — your manual shows which way. If it still won't penetrate, the needle is too thin for your fabric; try a larger size. Never force the handwheel; if it won't turn, stop and check what's blocking it.

Why are my stitches skipping?

Skipped stitches usually mean the needle is bent, dull, or inserted wrong. Change the needle first. If that doesn't fix it, the bobbin may not be wound evenly or inserted correctly — rewind it and reseat the bobbin case. Lint around the feed dogs can also cause skipping; brush it out.

The thread keeps breaking — what's wrong?

Check that the presser foot is down; if it's up, the tension discs won't grip thread and it will snap under tension. Make sure thread is seated in all guides and the tension discs. If thread is old or cheap, it may be weak; try a new spool. If the needle is bent or the eye is damaged, change it.

Can I use any thread in my machine?

Use thread made for sewing machines — it's smoother and stronger than craft thread. Match thread weight to your fabric: thin thread for lightweight fabric, heavier thread for denim or canvas. Polyester and cotton thread both work well for most projects. Avoid old thread that's been sitting in sunlight; it becomes brittle and breaks easily.

How do I know if my tension is set right?

Sew a test seam on two pieces of fabric stacked together. Look at both sides: stitches should look the same on top and bottom, with thread sitting in the middle of the seam. If top thread is loose and visible on the back, increase tension (turn the dial to a higher number). If bobbin thread shows on top, decrease tension (turn the dial lower).