Threading your machine is the first step before any sewing happens
A sewing machine will not sew if the thread is not in the right path. Threading means guiding the thread from the spool, through a series of guides and tension discs, and finally through the needle eye. If you skip a guide or miss the needle, the machine will either not catch the thread or create loose, uneven stitches. Most machines follow the same basic path, though the exact location of guides varies by model.
The good news: once you thread your machine a few times, the motion becomes automatic. You will recognize the guides by feel and sight. If something goes wrong later — skipped stitches, bunching thread, broken needles — re-threading is often the first fix to try.
Key Takeaways
- Always raise the presser foot before threading, because raising it opens the tension discs so thread can pass through.
- Thread the machine from top to bottom, following the guides printed or marked on your machine's body, then through the needle from front to back.
- The bobbin (the small spool underneath) has its own threading path and must be wound and inserted correctly for the machine to catch both threads.
- If stitches look loose on top or bunched underneath, re-thread both the top thread and bobbin before adjusting tension.
Raise the presser foot before you begin
The presser foot is the metal arm that holds fabric down against the feed dogs (the teeth that move fabric forward). When the foot is down, it also closes the tension discs — two metal plates that grip the thread. If you try to thread with the foot down, the thread cannot pass through the discs, and you will struggle to get it in place.
Lift the presser foot lever (usually on the back or side of the machine) all the way up. You will hear or feel a small click. Now the discs are open and the thread can slide through. Keep the foot up while you thread the entire machine.
Follow the thread guides from spool to needle
Place your spool of thread on the spool pin at the top of the machine. The spool pin is a small rod, usually on the right side of the machine's upper body. Make sure the thread unwinds smoothly — if the spool is backwards or loose, the thread will tangle.
Now trace the path downward. Your machine has small hooks, loops, or notches marked along the body. These are the thread guides. Pull the thread gently and guide it through each one in order. The path usually goes down the right side of the machine, then across toward the center. Look for a larger guide called the tension assembly — this is where the two tension discs sit. Push the thread between the discs. After the tension assembly, the thread continues down and usually through a small loop or guide just above the needle.
Check your machine's manual or look for numbers or arrows printed on the body — many manufacturers mark the path so you know the correct order. If you do not have the manual, take a photo of your machine's threading path and keep it nearby for reference.
Thread the needle from front to back
The needle is at the bottom of the thread path. The needle has an eye (a small hole) on the front side, just above the point. Always thread from front to back — that is, push the thread through the eye toward the back of the machine, not the other way around.
If the needle is hard to see, raise the needle to its highest point by turning the hand wheel (the large wheel on the right side of the machine) toward you. This brings the needle up and makes it easier to thread. Some machines have a needle threader — a small wire loop on the machine body that helps guide thread through the eye. If yours has one, follow the instructions in your manual for how to use it.
Once the thread is through the needle, pull a few inches of thread down and to the back of the machine. This tail will be caught by the bobbin thread when you start sewing.
Wind and insert the bobbin correctly
The bobbin is a small spool that holds thread underneath the needle plate. It works together with the top thread to create a stitch. Before you can use the bobbin, you must wind it — fill it with thread from your spool.
To wind a bobbin, place an empty bobbin on the bobbin winder (a small rod on top of the machine, separate from the main spool pin). Guide thread from your spool through the bobbin winder's guide, then wrap it around the bobbin a few times by hand. Press the bobbin winder against the machine body (it usually clicks into place) and press the foot pedal or start button. The machine will wind thread onto the bobbin automatically. When the bobbin is full, the winder stops or disengages automatically.
Once the bobbin is wound, insert it into the bobbin case. The bobbin case is usually under the needle plate — you may need to remove a cover or plate to access it. Place the bobbin in the case so the thread unwinds in the direction marked on the case (usually clockwise). Guide the thread through the small slot or guide in the bobbin case. Pull the thread so it sits in the tension spring — a small metal piece that grips the bobbin thread. Leave a few inches of thread hanging out.
Check your threading by looking at the path
Before you sew, visually trace the entire path one more time. Start at the spool, follow the thread down through each guide, through the tension discs, through the needle, and down to the bobbin case. If any guide is skipped or the thread is loose in a guide, pull it out and re-thread that section.
A common mistake is threading the needle but forgetting to pull the thread through the last small guide just above the needle. Another is placing the bobbin in the case backward so the thread unwinds the wrong way. Both will cause stitching problems.
Once everything looks correct, lower the presser foot. This closes the tension discs and locks the thread in place. Now you are ready to sew.
What to do if stitches look wrong after threading
If you start sewing and the stitches look loose, bunched, or uneven, the first step is to stop and re-thread. Loosen stitches on top usually mean the top thread is not threaded correctly or is not caught in the tension discs. Bunched or tight stitches underneath usually mean the bobbin thread is not threaded correctly in the bobbin case.
Raise the presser foot, remove the thread from the needle, and pull the thread out of all the guides. Start over from the spool. Make sure the thread passes through the tension discs — you should feel slight resistance when you pull it. If the problem persists after re-threading, the needle may be bent or inserted backward, or the tension may need adjustment. But threading is the first thing to check.
Frequently Asked Questions
Do I have to raise the presser foot every time I thread?
Yes. The presser foot lever opens the tension discs. If the foot is down, the discs are closed and the thread cannot pass through. This is the most common reason threading feels stuck or impossible.
What if I cannot see the needle eye well enough to thread it?
Raise the needle to its highest point by turning the hand wheel toward you. Use good lighting or a small lamp. If your machine has a needle threader, use it — it is a wire loop that guides thread through the eye automatically. Some people also use a needle threader tool (a small metal device you can buy separately) if the machine's built-in threader does not work.
Can I thread the needle from back to front instead of front to back?
No. The needle eye is designed to catch thread from the front. Threading from the back will not work and may damage the needle. Always push thread through from the front side of the needle toward the back of the machine.
What happens if I forget to wind the bobbin?
The machine will not create a complete stitch. You will see thread on top but no stitch will form, or the fabric will not move forward. You must wind a bobbin and insert it before sewing.
How do I know if the bobbin is threaded correctly in the case?
The thread should sit in the small tension spring or slot in the bobbin case. Pull the thread gently — you should feel slight resistance, similar to the top thread. If the thread pulls out easily or does not sit in the spring, remove the bobbin and re-thread it in the case.