Cleaning, Installing New Spindle, and Tightening

What happens here

Before installing the new spindle, the presenter uses a wire brush attachment on his impact driver to thoroughly clean the mounting surface on the mower deck, ensuring it's free of debris. He then carefully aligns the new spindle and starts threading the six mounting bolts from underneath. He mentions orienting the grease fitting slightly off-center to avoid interference. He proceeds to tighten the bolts in a criss-cross pattern, similar to tightening a car wheel, to ensure even pressure and proper seating. He repeats the process for the other broken spindle off-camera.

Goal: Install the new spindle securely onto the mower deck