Hi everyone, first post on this forum. Looks like a very helpful site! Anyway, I could not resist posting because I also have A lawnmower with this kohler xt7 engine. It's the last year toro super recycler (bought in april). I have always purchased lower line $200 dollar yard machines and decided to spend some more $$ and get a higher quality one. This mower was awesome all year long - started on the first pull every time. Followed the service schedule to the tee since I paid over $500 for this thing (replaced plug, drained oil, run it dry prior to storage and changed air filter). Went to fire it up this spring and it ran for about 2 minutes and choked out. Would not restart! I thought maybe a put old gas in it since the gas I used was about 3 months old - 87 oct. Replaced with new and still would not start. I talked to my local Toro dealership and they said to unscrew the nut on the carb bowl and make sure fuel is flowing through there. Flushed it with new fuel and the fuel went through successfully, but since i have no experiene with this i dont know if there was a partial blockage. Still did not start so i took it in to them and after about 1 week they said it was burning oil and some gasket had a leak? I am still learning about how these engines work, but for a 1 year old motor this is unacceptable. They are still checking with kohler about a kit to fix this and if it is covered under warranty. I will be furious if they come back and say it was "bad gas". I am wondering if what js is speaking of related. This mower may have about 15 hours of use!