The selected tractor must always be powerful enough to operate the sprayer efficiently under the working conditions that will be encountered. Tractors fitted with cabs must have efficient air filtration systems. All protective guards must be in place. Trailed sprayers are often close-coupled to the tractor, so it is essential that the drawbar and the PTO shaft are correctly adjusted for turning. PTO shafts must be disengaged when making very tight turns.
Part fill the tank with clean water and move the sprayer to uncropped waste ground.
Remove the nozzles. Although not using any chemical at this point, get into the habit of wearing a coverall, gloves and a face visor when working with the sprayer. Engage the PTO and gently turn the shaft, increasing speed slowly to operating revs. Flush through the spray lines, then switch off the tractor. Refit the nozzles and check the liquid system again for leaks.