When you use your tractor, you need to take a few precautions. Make sure that you check the entire lawn for dangerous items that you could run over. The harder the item, the more it can damage your tractor blades and you. From watering utilities to large rocks, you can be permanently injured by running over something dangerous. Replacing your tractor blades can be very easy but make sure that you know when to change them because a tractor does not work correctly without sharp tractor blades.