Which action describes proper post-run pump maintenance?

• A. Wipe down the exterior and close the drain valve.
• B. Disassemble the drive system.
• C. Drain the fuel tank and replace oil.
• D. Inspect for leaks, verify lubrication, clean strainers, drain water from the priming system if needed, and check gauges.

Answer: (D)

Post-run pump maintenance focuses on making sure the unit is safe, ready for the next use, and protected from damage. After a run, you want to check for leaks so you can catch any worn seals, gaskets, or connections before they become bigger problems. Verifying lubrication is important to keep bearings and gears coated and protected from wear, especially after the strain of pumping. Cleaning the strainers removes debris that could restrict flow or cause damage when the pump restarts. If the priming system holds water, draining it as needed helps prevent stagnation, corrosion, or freezing in the lines. Finally, checking gauges gives a quick read on pressures and system health, helping you spot issues that aren’t obvious by touch or sight.

The other options don’t cover these essential checks. Wiping the exterior and closing a drain valve omits critical internal inspections and could leave the system unready or even trap water in the priming path. Disassembling the drive system is unnecessary for routine post-run care and could introduce damage. Draining the fuel tank and replacing oil is more about general engine maintenance and isn’t specifically targeted at restoring readiness after a run.