All the new fourstroke skis are pretty sensitive to fuel and fuel delivery. First did you Really Treat the fuel before storing it last year, good fuel shelf life is like a month tops without additive. Second have you checked the fuel filter up by the fuel tank, I am also sending youa .pdf file of a parts list for your ski, see if locating it with this will help
jeremy
http://www.worldofpowersports.com/oem/fiche/honda/FICHE-HON-H20-ARX1200N3-02-03-04.pdf
Mechanic
PWC Service Shop Owner/Builder