How to Fix Skipped Stitches on an Embroidery Machine: 7 Step-by-Step Troubleshooting Tips

1. Check the Needle: The Most Common Cause of Skipped Stitches

• Replace with a new needle: First, check if the needle is bent, has a dull tip or burrs on the surface. A slight bend can be detected by rolling the needle on a flat surface; the most reliable solution is to replace it with a new one to eliminate consumable-related issues at the source.
• Ensure correct installation: The needle must be fully inserted to the top, with the long groove side facing the operator or the front of the machine. Incorrect installation will directly affect thread hooking.
• Match the needle size to the thread and fabric: The needle size must be compatible with the embroidery thread and fabric. A large needle paired with thin thread will leave excessive movement space for the thread in the eye, leading to frequent skipped stitches. For thin fabrics such as silk, use a small needle (e.g., #60/8); for thick fabrics such as denim, use a large needle (e.g., #90/14).

2. Check the Threading Path: Ensure Smooth Thread Movement Without Obstructions

• Rethread the machine properly: Refer to the embroidery machine manual to rethread the top thread, ensuring each step passes through the corresponding thread guides and tension discs to avoid thread movement abnormalities caused by missed threading.
• Inspect the smoothness of the threading path: Check all parts the top thread passes through, including the take-up lever hole, three-eye thread guide, needle plate hole and tension discs, for burrs or grooves worn by the thread. If the surface feels rough, gently sand and polish it with fine sandpaper to eliminate thread resistance.

3. Adjust Thread Tension: Achieve Optimal Tension for Both Top and Bobbin Thread

• Adjust the top thread tension: Overly tight top thread tension can disrupt the hook's thread hooking. You can moderately reduce the tension value (e.g., from 5 to 3-4) and test embroidery to check the result after adjustment.
• Calibrate the bobbin thread tension: The bobbin thread tension should not be too tight. The judgment standard is: hold the bobbin case, pull the thread end gently—the bobbin thread should be pulled out evenly and smoothly without loosening or falling off.

4. Check the Hook: Calibrate the Condition and Timing of This Core Component

• Clean and polish the hook: Remove the needle plate and check if the hook point (the crescent-shaped small hook) is dull, frayed or damaged. If there are slight burrs, gently polish it with fine sandpaper of about 600 grit; replace the hook with a new one if it is severely worn.
• Inspect and calibrate the thread-hooking timing: Turn the machine handwheel and observe the coordination between the needle and the hook. The standard thread-hooking timing is: when the needle drops to the lowest point and then rises about 1.5-2 millimeters, the hook point should move exactly above the needle eye, ready to catch the top thread loop. If the timing is off, adjust the hook phase according to the machine manual; if you are not proficient in the operation, it is recommended to ask a professional for help.

5. Check the Embroidered Fabric and Hoop: Ensure Stable Fabric Fixation

• Tighten the fabric fully: Tighten the fabric in the embroidery hoop to a taut state like a drum skin to provide stable support for the needle during embroidery.
• Use backing paper as needed: When embroidering on thin or stretchy fabrics, place 1-2 layers of non-woven backing paper or stabilizer under the fabric to increase its stability and prevent it from jumping with the needle.

6. Check the Embroidery Presser Foot: Ensure Proper Pressure and Position

• Inspect the presser foot condition: Check if the presser foot spring has sufficient pressure and if the presser foot is deformed. Replace relevant parts in a timely manner if the pressure is insufficient or the presser foot is deformed.
• Calibrate the presser foot position: When the needle is at the lowest point, the gap between the presser foot and the needle plate should be controlled at 0.5mm-1.5mm; adjust it promptly if the gap is too large.

7. Optimize Embroidery Parameters: Adapt to the Embroidery Scenario to Reduce Malfunctions

• Moderately reduce the embroidery speed: When embroidering complex patterns or corner parts, lower the embroidery speed appropriately (e.g., from 850 stitches per minute to 650 stitches per minute) to reserve sufficient time for mechanical thread hooking and reduce hooking errors.
• Use high-quality consumables: Always choose qualified embroidery threads and needles. Inferior consumables are prone to thread breakage, needle damage and other problems, which greatly increase the probability of skipped stitches.

Daily Maintenance Tips for Embroidery Machines