Cleaning Bolts and Removing Mower Blades

What happens here

The presenter mentions that this is new territory for him but expects it to be a straightforward part replacement. He uses a DeWalt impact driver with a wire brush attachment to clean off grass and grime from the bolt heads holding the blades. He then uses the impact driver to loosen and remove the bolts, detaching the blades. For a stubborn bolt, he uses a large pipe as a breaker bar extension on a wrench to gain more leverage. He shows a severely gouged blade as one of the problems.

Goal: Clean around the blade bolts and remove the damaged mower blades