Empty and clean sprayers thoroughly after each day's use. Empty unused insecticide into its original container. To clean, add a warm detergent and water solution to the sprayer, agitate, pressurize, and spray through the hose and nozzle. Repeat the above step three times with clean water. Place a few drops of oil on the leather plunger cup to keep it pliable.
Repair Save the manufacturer's manual that comes with the sprayer.
Repairing the hand-compressed air sprayer is not difficult. Most sprayers are similar in construction. Some parts are interchangeable. The manual will be needed to troubleshoot and repair the sprayer when if it malfunctions. Maintain extra gaskets, valves, nozzles, hoses, and small spare parts used in the sprayers.