Mine wouldn't start for **** when I first got it, so I took it back to the Dealer and had them give 'er a quick once over while I watched. Turned out that two of the fuel lines were crossed, and the choke wasn't hooked-up, from the factory. I wanted to ask how it got through their (the Dealer's) Start-up and QC, but I figured it was running, the price was right (they did this for free), and I didn't want to be That Guy.
Ever since then she's run like a champ!
That is, until I dropped a tree on it this past spring and had to rebuild it....