I have a 580R with a Cat C13 engine and I was harvesting like normal and then the engine just died pulling it down to 1400rev so I stop, it wouldn`t even pull it self along. So I changed both fuel filters one on the bottom of the fuel tank a cartridge type and the motor one was a spin on type. so after changing the fuel filters I went back harvesting with full power. After 3 hours it did it again now after changing the fuel filters a 2nd time it never fix it. I have taking the fuel line off the fuel take and the fuel looks very clean so I know I have a problem some where els. Any help would be great don't know what to do next.