I believe the Kawi EX500 and EX250 have the same/similar maintenance intervals: 1000km first oil & check cables, etc, 6000 km second maint w/ oil etc, 12,000 km...etc - I don't have the book with me so only remember the km right now, sorry
Go into Echo or Cycleworks and look at the new 500's and ask to see the owner's manual if you have time tonight (they close at 6 pm) or this weekend