I put a new fuel line & rebuilt the carb for my XL-800AM today.I had to start the saw about 3 times to get the idle setting right & the 3rd time I got knocked on my keister.The plug wire had a bare spot by the plug shield & was shorting out.I dropped the saw about 3 ft.onto my porch & it just kept running.Lol Now I need to get a new coil lead.