The clothes go back and forth

When sewing clothes, the clothes often move back and forth, that is, one step forward and one step backward. This is caused by the fact that the feeding teeth are too high. The teeth are exposed on the needle plate and the plane is too high. The teeth are always exposed outside the needle plate and move back and forth, causing the cloth to move back and forth.
When adjusting, loosen the crank screw of the lifting teeth, press the teeth down lightly with a screwdriver to lower the feed teeth to the standard height, that is, the teeth are exposed to the size of the needle plate 0.8-1 mm, and then tighten the crank screws.