In four years, the only problem I had was "sputtering" and conking out. I think it was bad gas that I didn't drain from last year. After running about 20 minutes and draining the fuel bowl of the old gas, it seems to run fine. Anyhow...what temperature should the engine be running at after usual riding and at idle? Just wondering because I want to make sure my engine is not running lean. Anyone have a service manual in PDF form?