I have an S240. A few weeks ago, I was cutting the grass and hit a pine root and it stopped the mower cold. The blades ran rough for a few minutes and then settled down. I cut the llawn two more times without issues. This past Sat., I cut the lawn for about an hour. The deck shuddered hard and the blades stopped working. Once it cooled down, the blades will engage (rough) and run for a few seconds before they stop again. Is the PTO ruined? Is is something on the deck? What do I need to look for? I am a LOUSY mechanic, but it is going to be weeks before I can get someone to look at it. ANY and ALL good advice will be appreciated!!! THANKS!!