The thaw has begun ! It looks like temperatures are going to stay above freezing, the Robins are returning to CT, and this huge pile of snow is starting to melt ! Before you know it, the grass will be growing, and it will be time to take the mower out again. You have about a 50/50 chance that the fuel you left in it last year didn't clog up the carburetor, and stop it from starting this year.