[cub149]

I had someone call me today wanting to sell me a 128. He said it runs really good but after mowing with it for 40-45 minutes it starts to loose power/bog down. He can let it sit for about 15 minutes and it will run good again for another 45 min. Then the same thing. Could this be a carb issue? Trash in the fuel lines?
I haven't seen it yet, just wanted to get an idea of what it could be.