How Do I Keep My Baby Lock Overlocker Sewing Well?

Short answer: keep the threading path clear, use suitable needles and thread for your project, and pay attention when the sound or stitch suddenly changes. Follow your model's manual for routine cleaning and any lubrication instructions; models differ.

What should I check before assuming there is a fault?

Try a fresh needle of the correct type, confirm that the presser foot is lowered, check that the thread is seated correctly and test on a fabric offcut. On a knit seam, fabric choice and differential feed also affect the result. If you have an air-threaded machine, follow its own procedure for the loopers and needles rather than a generic diagram.

If stitches remain inconsistent or the machine sounds wrong, stop and book a professional check. See Fabric Mouse servicing and repairs or explore current Baby Lock machines and accessories if you are planning an upgrade.