I did my own at 150 Miles , changed the oil and filter , frt and rear diff oil and gave it a good look at the brakes , susp and air filter. Every spring I do the same thing regardless of hours run or miles put on , It may seem excessive to some but I got 5 hard years out of my 250 Recon and had No problems in that time, as far as what the dealer does you may want to Buy the Honda TRX500 FE/FM manual and do it yourself it's easy and I find it more gratifying. call the dealer were you bought it and ask for whats involved or done and how much. It may differ from dealer to dealer . Good luck .