If its the fan, I would of had problems ages ago. The new battery only lasted a few hours. Second last job last week I could tell it was going flat. Last job it really struggled to get started, but it did. Half way through the job the blades stopped. I loaded onto trailer (incase I couldnt get it going again) and checked fuses. They were fine but no way was the engine starting again. Went to mechanic and started right up with a jump start. Ive had to replace an exhaust on a older machine. Had one welded up on last machine. Where the pipe splits into 2, the crack is on one of those pipes where its welded onto the exhaust "stack" or what ever its called!