Dammit seru! I was gonna see if I could get him to finger-it-out fer hisself, fercrissakes!Open the carb drains and let the gas drain out of the float bowls. Catch the drainage in a container and look at it to see if it's got crud and/or water in it. If it does you should pull off the tank and flush it out. Then try running some carb cleaner in the gas. See what happens after a tankful. It may require cleaning the carbs which will require removing them.
I hope you have a manual. They are invaluable.
Let us know.