The first service I would have them do, just to be sure. I had the first one done on my Kawasaki at the dealer just to be safe though I'm certain they didn't do everything they were supposed to do. From here on out I do them myself. After the warrenty runs out I'll buy my oil and filters elsewhere. Most dealers will honor the warrenty if you buy the oil and filters from them, that way they and you have proof you did them incase something should need done under warrenty.