I purchase a new John Deere riding lawn mower in 2...

I purchase a new John Deere riding lawn mower in 2008 from a John Deere dealer. This year the engine fail with less than 90 hours. I changed the oil and filters every year. I wrote to John Deere and they said I apologize you have not been happy with the performance of your LA115. We regret anytime a customer is less than fully satisfied .