Brian,
I found a PDF online of an RSV owners manual which is in the post
https://www.yamahaventure.nl/pdf/ownersmanualxvz13tf.pdf
On page 3-20 it gives the pressures, but in kPa which I converted over to PSI. It states 400 kPa is max on the rear shock, which translates to 58 psi maximum rear shock pressure. The front shock maximum pressure is 7psi