This can be a problem and can be detected by simply removing the open arm cover and run the machine again to see if the machine runs free. Occasionally, the feed dog is misaligned but generally not by itself. The problem will generally be from an applied force where the open arm cover has been removed as in careless cleaning, some sort of repair attempt, or the actual removal of, and failure to align the feed dog properly. The feed dog can be aligned parallel with equidistance spacing between the outside feed dog bars and the slots in the needle plate. Further adjustments can also be made to the lateral spacing on the X axis as well as the position of the center bar on the Y axis, but I won't go there this time around.
Answers & Comments
This can be a problem and can be detected by simply removing the open arm cover and run the machine again to see if the machine runs free. Occasionally, the feed dog is misaligned but generally not by itself. The problem will generally be from an applied force where the open arm cover has been removed as in careless cleaning, some sort of repair attempt, or the actual removal of, and failure to align the feed dog properly. The feed dog can be aligned parallel with equidistance spacing between the outside feed dog bars and the slots in the needle plate. Further adjustments can also be made to the lateral spacing on the X axis as well as the position of the center bar on the Y axis, but I won't go there this time around.