Overhaul, the only steel and iron brush or sandpaper smooth grinding wheel as it will give the pump at work to reduce fuel consumption or power consumption 9% - 14%.

• 检修时，只需用钢刷和铁砂纸或砂轮打磨光滑，这样可使水泵在工作时的油耗或电耗降低9%25-14%25。