Before the season starts

• Repair any damaged or worn parts.

• Turn the pump by hand to check it has not seized.

• Hitch the sprayer to the tractor and connect the pump to the power take-off shaft.

• Clean the inside of the sprayer tank, remove the nozzles and then flush the machine with a tankful of clean water.

• Wash and replace the filters, fit a clean set of nozzles and then spray out another tank of clean water, checking the spray pattern.

• Make sure all the nozzles have the same output. To do this, run the machine and collect water from each nozzle for half a minute. By using a measuring jug to collect the water, the exact output of each nozzle can be obtained. Replace any unsatisfactory nozzles. Nozzles will wear with use and will need replacing after a time.

• Check for leaks.

• Carry out a static calibration test, and record the results.

Plate 13.12 Both spray booms can be individually folded in and out from the tractor seat. The outer sections can be folded in to reduce overall boom width when spraying narrow headlands.

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