Adjusting the BW213D drum roller vibrating motor speed

One of the important abilities of rollers is their vibration. This vibration can be adjusted in two levels, high and low. In the model BW213D roller, the speed of the vibrating motor must be adjusted in each of these modes. In low mode, the vibration engine speed should be equal to 1800 and in high mode, it should be equal to 1900. We use Tachometer RPM Tester to measure engine speed. DT-2234C+ model, which is used to measure the speed of small engines.