Application

Except that the rotary hook needs to control the oil supply to avoid contaminating the clothes, it is not necessary to control the oil supply of each part. When the capacity of the oil pump at the needle bar is limited, the oil amount can be adjusted to a small amount by screwing the adjusting screw on the left end of the upper shaft by an appropriate amount. If the amount of oil in the hook is too large, turn the adjusting screw out.