What corrective action should be taken if a generator has improper or contaminated fuel?

When a generator has improper or contaminated fuel, the best corrective action is to drain the fuel and replace it with proper fuel. Using incorrect or contaminated fuel can lead to a range of issues, including reduced efficiency, engine knocking, poor performance, and even damage to the engine components. Poor fuel quality can introduce particles, water, or other contaminants that can clog filters, cause leaks, or lead to corrosion within the fuel system.

By draining the contaminated fuel and replacing it with the correct type of fuel, you ensure that the generator operates as designed, minimizing the chance of malfunctions and extending the lifespan of the equipment. This step addresses the underlying problem effectively, restoring the generator's ability to function optimally. Other options, such as increasing engine speed, adding a fuel stabilizer, or changing the oil, do not directly address the issue of improper or contaminated fuel and may not resolve the root cause of operational problems.