Honda Shadow Aero, Recommended tire pressure?

I have a 2007 Honda Shadow Aero 750, What is the recommended tire pressure for this? It shows I have 10 psi in the front which looks to be impossible. Because it is not flat or even close when parked and when sat on. (I'm 300 pounds, I think it would droop. And the back says I have 25. How much do I need?

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