I have a pretty new Husqvarna TS142 with an 18.5-HP, 540-cc Briggs and Stratton Endurance Series V-Twin which I bought in January. Yesterday, as I was mowing, blue smoke started coming out the front and when I checked under the hood, I saw oil present on and under the engine. I am guessing that it blew the head gasket. The engine still runs and starts fine so I assume there is no other damage. It is still under warranty, but I did not get an extended protection plan, so getting it transported to and from a repair facility will likely cost a lot more than a new gasket and the time it takes me to replace the gasket. I understand this is not a particularly complicated repair. My question before I undertake this however is whether or not there are other possibilities I might not be considering and should I be looking at anything else on this. Also, is there anyway for me to verify this before I begin my efforts. It's a bit messy under there right now and it's not readily apparent where the oil is actually coming from. Is there anywhere else the oil could be coming from aside from the head?