I have a running engine out of a waverunner WR500 Jet Ski PWC. Wave Runner 500. Will also work in the Wave Jammer. And you can swap it into the LX650 or the WR650, if you just want to make a ski run again to sell or ride, but you may have to swap the love joy coupler.
Use it for the power plant for a John boat jet boat conversion.
This is the engine, fuel tank, start stop buttons and complete electronics.
I can start it for you also when you pick it up to show it still runs.
It has 130 PSI in both cylinders.
Here is a video of the compression and it running in the ski and completely out of the ski: https://youtu.be/otE-I8chf7g?si=P8LOPn8EhsR5MZfX