Carburetor kit for a t540xp worked great. I bought the saw when it first came out. Used it less than 10 hours and put it away for the winter with CA. Pump gas in! No local shop wanted to work on it and I was originally intimated by the fuel injection cpu and messing up a new $800 saw so it sat on a shelf for all these years. Almost bought a new carb for it the other day at about $200, but decided to order a kit give and it a shot instead. It was super easy to work on and only took about 30 minutes.