We have a John Deere Mower F525, while I was mowing I hit something and the mower deck quit turning. Have checked fuses and belts, but mower deck will not engage. Any suggestions?

Hi,
That would be the four fuses beneath the seat? Just a memory-jogger, but that machine will not engage the deck with the park brake or brake on. The deck will shut off when park applied.
Peace,
Clarke