Threading Problems: Check the Manual Before Adjusting Tension

When stitching becomes irregular, check threading, bobbin insertion, needle condition, and compatible supplies before changing unfamiliar tension parts. Use the exact machine's troubleshooting sequence. A problem can look like a tension issue while actually coming from a missed threading step or unsuitable component.

Stop and make the machine safe

Follow the manual before accessing the needle or bobbin area. Do not pull fabric forcefully to clear a jam. Use the instructed method for removing tangled material or thread. If operation is abnormal or a part is damaged, stop using the machine and seek appropriate support.

Rethread in the stated order

Check the presser-foot and take-up-lever positions the manual requires. Follow the entire thread path rather than correcting only the section that looks loose. Confirm spool arrangement and any cap guidance. A skipped guide can cause trouble even when the visible thread route appears plausible.

Check the lower thread and needle

Use a compatible bobbin wound and inserted as directed. Confirm the needle's system, type, size, orientation, and condition. Check the chosen thread and fabric combination. A recent change to a needle, foot, or bobbin is a reason to inspect that change before altering unrelated settings.

Test one change at a time

Use suitable scrap and the recommended basic settings. Record the symptom and the change you made. Avoid adjusting internal screws based on a generic online fix. If the official troubleshooting sequence does not resolve the problem, contact support or service with the exact model and symptom.

• Follow the whole threading sequence from the manual.
• Confirm compatible bobbin and needle setup.
• Change one appropriate variable at a time.