Sewing Machine Skipping Stitches: Check the Needle and Thread Path Before You Suspect Timing
If you are asking why is my sewing machine skipping stitches, first prove that a stitch is actually missing. When fabric advances normally but some needle penetrations fail to form a lockstitch, the first checks are the needle, its installation, the needle-thread-fabric combination, upper threading, bobbin state, and only the user-accessible cleaning steps documented for