What's Inside a Lawn Mower Transaxle?

I love gears, pulleys, and power transmission systems - but I've never actually taken a milling machine to the side of a lawn mower gearbox to find out what's happening! (This is a single-ratio, variable speed transmission, no gear shifting) Here you go. Steps: #1 Find old lawn mower #2 Take it apart. Or better yet, work with your kids to take it apart. #3 Take it apart and clean the grease out - very messy. #4 Mill the side away #5 Watch the gears work over and over. Because it's awesome! Huge thanks to Dad, who always helps with tools and shop space.