How to Troubleshoot a Kawasaki Jet Ski

Kawasaki jet skis are a type of machine called a personal watercraft which is designed to be used with a single person. Early models of jet ski required the user to stand on the machine to maneuver it on the water. When problems occur with the machine, you need to find the cause. One common problem that can occur with the jet ski is when the engine does not start.


1) Verify that the engine interlock switch is set to the “Right.” The engine will not start with the switch in the “Left” position.

2) Verify that the fuel valve is in the “On” position before starting the jet ski. Pull the choke knob so that is it all the way out. Press the “Start” button to start the engine.

3) Remove the cap for the fuel tank and fill the machine with gas. The engine may start and then stop or not turn over at all if the fuel level is low.

4) Open the engine compartment and disconnect the spark plug wires from the spark plugs. Remove the spark plug from the engine with the spark plug wrench. Clean the end of the spark plug with clean rag or cloth. If the spark plug is really dirty it needs to be replaced with a new one.

5) Open the compartment for the battery and check for loose cable connections. Tighten the battery cables on the battery with the wrench.

6) Examine the jet pump on the back of the jet ski and remove any debris that is in the pump. Debris that is in the jet pump can cause the engine to overheat.

Extra tips:

*Some Kawasaki jet skis require a specific oil to gas mixture to run properly.

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