How to adjust the three screws on the cam on the nose of the old bee sewing machine

1. Open the nose to see if the bottom shuttle positioner moves. If so, put it back to the original position marked by the red arrow to see if the needle is deformed. The needle tip will be worn and deformed after long-term use. It is best to change a new needle and adjust it outward to the plane of the groove.

2. Loosen the three screws fixed on the hook to facilitate the adjustment of the position of the hook. The hook of the rotary hook is aligned with the arrow position, and the distance between two rounds is less than one round, which is the best. If you want to make a thick material, you can adjust the spacing of a hair and tighten three screws, so it is adjusted.