Do you guys take your mowers to your dealer before the start of the year for a complete servicing? I've never done it, but i spoke with a competetor who swears by it. I've always just changed the filter/oil, replaced belts when needed, and checked air filter. Only carry my machine to the dealer when it breaks and it is something i can't/don't want to fix. What does everyone do? What do you get when you take it?