I have encountered someone with an 853 Bobcat that has blown the engine. Seems like it broke a rod. The machine has the proper oil level, so i was thinking that the machine has been abused in some way. After looking at youtube today I am wondering if something like this happened... http://youtube.com/watch?v=haebSH8dlkA It's a swimming pool company so you know they have the lowest quality labor. I have seen similar damage from "stunt drivers" operating the machines at 90 degree angles. It's an old machine, but this seems like a reasonable assumption. Any ideas?