How to Flush a Jet Ski

Saltwater can have harmful effects on your jet ski's motor and body. You should flush your engine after every ride to remove salt, debris and minerals that may clog the water passages inside your jet ski. If you do not regularly flush your jet ski, the engine may overheat and cause major damage. Jet skis run in fresh water should also be flushed occasionally to remove debris and minerals. Flushing your jet ski does not take much time and should be part of your regular maintenance schedule. Always flush your jet ski before you store it for the winter.

Things You'll Need

  • Flush kit (optional)
  • Fresh water hose
  • Towels
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Instructions

    • 1

      Remove your jet ski from the water. Wash the exterior with fresh water. Be certain that no salt remains on the jet ski. Thoroughly clean the jet nozzle, reverse gate, impeller and ride plate.

    • 2

      Allow the engine to cool down before you begin flushing. Unscrew the drain plug. Hook the hose up to the water injection port. Start the engine and let it run for a few minutes. Turn the water on while the engine is running. The water should flow out of the exhaust, impeller grate and cooling port. Let the engine run for about eight minutes with the water flowing through. Remove the hose and let the engine run a few more seconds before shutting it off.

    • 3

      Tilt your jet ski back on the trailer to allow any excess water to run off. Dry off the engine, battery compartment and exterior with towels.