A buddy of mine just bought a brand new Yamaha Grizzly 450. We rode our machines a few miles the day he picked it up and his engine overheating light kept coming on. The radiator wasn't muddy, the fan only came on once, and we were riding very easy terrain. To be safe, we immediately cut our ride short, stopped every time it came on to let it cool, and retruned the ATV to the dealer ASAP.
According to the dealer, the engine is screwed.
If this happened to you, how would you go about getting the dealer to give you a different brand new machine?
I honestly don't think just "fixing" the lemon engine, or replacing the engine is fair. A man spends $6K on a new machine, he doesn't want to feel cheated, or worry about future problems...