Start with threading and bobbin setup

Threading a Janome sewing machine is the first step before you can sew anything. The process is the same on most Janome models: raise the presser foot (the metal piece that holds fabric down), raise the needle to its highest point by turning the handwheel toward you, and then guide thread through the tension discs, thread guides, and finally through the needle eye from front to back. Raising the presser foot opens the tension discs so thread can pass through smoothly—this is straightforward to forget and causes tension problems.

The bobbin goes in the bobbin case underneath the needle plate. Wind thread onto an empty bobbin using the bobbin winder on the side of your machine: place the bobbin on the winder pin, guide thread through the tension guide on the winder, and press the bobbin against the winder wheel until it stops automatically when full. Insert the wound bobbin into the bobbin case with the thread end pulled through the tension spring, then close the bobbin cover. If you skip the tension spring, your bottom thread will be loose and stitches will look uneven.

Key Takeaways

  • Raise the presser foot before threading so the tension discs open and thread feeds smoothly through the machine.
  • Wind the bobbin completely before inserting it, and always thread the bobbin case tension spring or your stitches will be loose on the underside.
  • Test your tension on scrap fabric before starting a project—balanced stitches look the same on both sides of the fabric.
  • Clean out lint from the bobbin area every few projects and oil the machine according to your manual to keep it running smoothly.
  • Most Janome machines have a free arm for sewing circular items like pant legs, and a removable table that extends the flat surface for larger projects.

Adjust tension and test on scrap fabric

Tension controls how tight or loose your stitches are. On Janome machines, the tension dial is on the front of the machine and usually numbered from 0 to 9, with 4 or 5 as the default starting point. If your top thread is too tight, stitches will pucker and the fabric will bunch. If it is too loose, the bobbin thread will show on top and stitches will look sloppy. The bobbin tension is harder to adjust and rarely needs changing—start by adjusting only the top tension dial.

Before sewing your actual project, cut a small square of the same fabric you plan to use and sew a few lines on it. Look at both sides: balanced stitches should look nearly identical on top and bottom. If the top thread is too tight, turn the dial down one number. If the bobbin thread shows on top, turn the dial up one number. Make small changes—one number at a time—and test again. Once stitches look even, you are ready to sew your project.

Select stitch type and stitch length

Janome machines offer different stitch types: straight stitch for basic sewing, zigzag for stretchy fabrics and finishing edges, and decorative stitches for embellishment. Most machines have a stitch selector dial or buttons on the front panel. Straight stitch is the default and works for most projects. Zigzag stitch is useful when sewing knits or finishing raw fabric edges so they do not fray.

Stitch length is how far the needle moves forward with each stitch, measured in millimeters. Shorter stitches (around 1.5 to 2 mm) are stronger and better for seams that need to hold. Longer stitches (around 3 to 4 mm) work for quilting or topstitching. The stitch length dial or buttons are usually near the stitch selector. Start with a medium length around 2.5 mm and adjust based on your fabric and project needs.

Position fabric and use the presser foot correctly

Place your fabric under the presser foot with the needle positioned where you want to start sewing. Lower the presser foot by pressing the foot lever on the back of the machine—this engages the tension discs and holds the fabric in place. Never sew with the presser foot raised or your stitches will be loose and uneven. Guide the fabric with your hands but do not pull it; let the feed dogs (the metal teeth under the needle plate) move the fabric forward at their own pace.

For seams, align the fabric edge with one of the guide lines marked on the needle plate. The line marked 5/8 inch is standard for most sewing projects. Keep your hands relaxed and let the machine do the work. Sewing too fast or pulling the fabric causes skipped stitches and broken needles. If you need to stop mid-seam, raise the needle by turning the handwheel, raise the presser foot, and reposition the fabric before lowering the foot again.

Use the free arm and removable table for different projects

Most Janome machines have a free arm—a narrow section of the machine bed that you can access by removing the flat table extension. The free arm is designed for sewing circular or tubular items like pant legs, sleeves, or the cuffs of hats. Remove the table by sliding it toward you or unlatching it according to your machine model, and you can slide the fabric around the free arm as you sew.

The removable table extends your work surface for larger projects like quilts or home décor items. Attach it by sliding it back onto the machine bed or latching it in place. Having a larger flat surface reduces strain on your hands and gives you more control when sewing big pieces. Store the table in a safe place when not in use so it does not get damaged.

Clean lint and maintain your machine regularly

Lint builds up in the bobbin area and under the needle plate every time you sew. After every few projects, open the bobbin cover and use a small brush (usually included with your machine) to sweep out lint from the bobbin case and feed dogs. Do not use compressed air, which can blow lint deeper into the machine. Lint buildup causes tension problems, skipped stitches, and can eventually damage the machine.

Check your Janome manual for oiling instructions—some models need a drop of sewing machine oil in specific spots every few months, while others are sealed and do not need oiling. Never use household oil or WD-40; these are too thick and will gum up the machine. If your machine starts making grinding sounds or stitches become uneven despite proper tension adjustment, it is time to have it serviced by a professional technician.

Troubleshoot common problems

Skipped stitches usually mean the needle is bent, inserted backward, or the wrong size for your fabric. Remove the needle, check that it is straight, reinsert it with the flat side facing the correct direction (check your manual), and make sure the needle size matches your fabric weight. A size 80/12 needle works for lightweight fabrics, while size 100/16 is better for heavier materials.

Thread breakage happens when tension is too tight, the needle is bent or dull, or thread is not threaded correctly. Loosen the tension dial, replace the needle, and rethread the machine from scratch. Bunching or puckering on the underside means the bobbin thread is too tight or the bobbin is not wound evenly. Rewind the bobbin slowly and evenly, and check that it is inserted correctly into the bobbin case with the thread through the tension spring.

If the machine will not start, check that the presser foot is down (some models will not run with it raised) and that the power cord is plugged in. If the needle will not move at all, the handwheel may be locked—turn the small dial or lever near the handwheel to unlock it. Consult your machine's manual for model-specific troubleshooting steps.

Frequently Asked Questions

What needle size should I use for different fabrics?

Needle size is marked as two numbers, like 80/12 or 100/16. The first number is metric, the second is American. Size 60/8 or 70/10 work for delicate fabrics like silk and lightweight cotton. Size 80/12 is standard for most everyday sewing. Size 90/14 or 100/16 are for heavier fabrics like denim and canvas. Using the wrong size causes skipped stitches and can break the needle.

Why does my thread keep breaking?

Thread breaks when tension is too tight, the needle is bent or dull, or the machine is not threaded correctly. Loosen the tension dial by one or two numbers and test on scrap fabric. Replace the needle—needles dull after 8 to 10 hours of sewing. Rethread the entire machine from scratch, making sure the presser foot is raised so the tension discs open.

Can I sew stretchy fabrics like knit or jersey on my Janome?

Yes, but use a ballpoint or stretch needle (size 75/11 or 90/14) instead of a regular needle, and select zigzag stitch instead of straight stitch. Zigzag allows the fabric to stretch without breaking the thread. Test on scrap fabric first. If stitches still skip, your machine may need a professional cleaning or the needle may need replacing.

How often should I oil my Janome machine?

Check your specific machine manual—oiling frequency varies by model. Some machines need oil every few months of regular use, while newer sealed models do not need oiling at all. Use only sewing machine oil, never household oil. Over-oiling can damage the machine, so follow your manual exactly.

What is the difference between the presser foot being up and down?

Raising the presser foot opens the tension discs so you can thread the machine and remove fabric easily. Lowering it closes the tension discs and engages the feed dogs to move fabric. Never sew with the presser foot raised or stitches will be loose and uneven. Always lower it before you start sewing.