The movement of the cloth is entirely carried by the teeth. When it turns out that the fabric doesn't move at all, it's only the teeth that are the problem. If the teeth are set too low, it is impossible for the material to move forward. When adjusting, first turn the head of the machine, loosen the screw of the tooth lifting crank, and then gently lift the tooth frame with a screwdriver to make the cloth feeding tooth direction. It is enough to expose the needle plate 0.8-1 mm above. It is the standard size of the height of the teeth. As long as it is adjusted to this position, the cloth can move normally. Finally tighten the screws. When screwing the screw, also turn the machine head up.
