Question

what should an operator do to relieve hydraulic system pressure when shutting down a tractor?
cycle all scv controls through all positions and then return them to neutral.
place the scv control levers in the extend position.
hold the scv control levers in the retract position when the cylinders reach the end of travel.
place the scvs in the continuous detent position.

Explanation:

To relieve hydraulic system pressure when shutting down a tractor, cycling all SCV (Selective Control Valve) controls through all positions and then returning them to neutral helps release any built - up pressure. Other options don't properly relieve the pressure. Placing in extend, retract, or continuous detent positions can leave pressure in the system.

Answer:

Cycle all SCV controls through all positions and then return them to neutral.