If engine speed check shows the MWS apparatus is running at a different speed than rated, you should:

If engine speed check shows the MWS apparatus is running at a different speed than rated, you should:

• A. Continue testing and adjust later
• B. Recalibrate the RPM gauge
• C. Stop the testing until the problem is corrected
• D. Increase throttle to match

Answer: (C)

When the engine speed isn’t at the rated RPM, testing at that moment would not reflect how the MWS system should perform and could mask a real problem or cause unsafe operation. The pump’s performance and the test readings depend on running at the correct speed, so you must stop testing and fix the issue before proceeding. Simply continuing would produce invalid results, and adjusting the RPM gauge or increasing throttle without correcting the underlying cause won’t address the real discrepancy and could stress the equipment. After identifying and correcting the cause—whether it’s a governor issue, fuel delivery, air intake, or a faulty tachometer—you can safely re-test to ensure the engine runs at the proper speed and the readings are valid.

When the engine speed isn’t at the rated RPM, testing at that moment would not reflect how the MWS system should perform and could mask a real problem or cause unsafe operation. The pump’s performance and the test readings depend on running at the correct speed, so you must stop testing and fix the issue before proceeding. Simply continuing would produce invalid results, and adjusting the RPM gauge or increasing throttle without correcting the underlying cause won’t address the real discrepancy and could stress the equipment. After identifying and correcting the cause—whether it’s a governor issue, fuel delivery, air intake, or a faulty tachometer—you can safely re-test to ensure the engine runs at the proper speed and the readings are valid.