As it turns out, not all beginners pay attention to the wear of the ring and the jet nozzle impeller due to sand and small stones. Some do not know that this parameter is subject to adjustment. We shot this video to explain and show the principle of this process. The jet nozzle is a design in which all parts are replaceable and maintainable. The weakening of a water jet is usually caused by sand and stones entering the water intake, which is easily corrected within a few minutes.