Hope this helps you get it apart, if you're Tine Seals are leaking gear oil. Tine shaft replacement is usually needed to stop it leaking; because when dirt and grit get between the seal and the shaft over time it grinds a grove in the shaft; then the oil seals won't hold oil even after replacing with new seals. In this video when I say 9/16 bolt it's a 3/8's inch bolt; that needs a 9/16's wrench or socket...and so on. I have worked this tiller like a Horse for at least twenty years, it's on its' third motor. These are good tillers worth fixing, and the new Pony at Home Depot today is $1599. (01/06/2022) Best of luck!