For a piston pump, inspect check valves, valve seats, O-rings, seals, plunger cups and cylinders. Change the diaphragms and oil every 500 hours of spraying or every 3 months
Pampu ya piston, onani ngati zotchinga madzi, ma ling'I, zotchingira, zotsekera komanso silinda. Sinthani masefa ndi mafuta maola 500 akadutsa mukupopera kapena pa miyezi itatu iliyonse 