I used to work for Bombardier before they sold that division. I spoke with some engineers that had worked on their four-wheeler design in the early days. They told me that they designed to the bare minimum and didn't worry about warranty claims. They figured that most people only used them for a few hours a year, so they'd be out of warranty on years, before they got close to the number of hours. So say a two year warranty with 1000 hours. 1000 hours sounds great, and you'd rarely get there unless you were using it commercially, but if something failed at 25 months and 250 hours, you weren't covered.