Can you crank a jet ski out of the water?
Yes. You can crank and start a jet ski out of the water.
However, without water, there will be no cooling for the engine,
exhaust, and driveline. So generally it is not recommended to let
the engine run more than a few seconds. Many people crank a jet ski
out of the water to prime the fuel system prior to placing the jet
ski in the water.