It is not recommended to use oily products! Such as sesame and peanut, which will stick to the machine head after being beaten into mud paste! Install the motor wheel and the main engine wheel on the same horizontal line. The belt must be tightened, as loosening it can cause the motor to lose power. Before discharging the material, loosen it first (tighten clockwise, loosen counterclockwise). After plugging it in, adjust it to the appropriate thickness according to the needs, and then clamp it properly. The finer the grinding, the louder and more piercing the sound will be. This is a normal phenomenon, please feel free to use it! When moving the machine, lift the lower frame and do not lift the hopper to avoid breakage. The first use may result in a slightly black substance, which is a normal phenomenon. Just rinse with water after turning on the machine. After each use, clean with water and take out the grinding disc to dry.