Kubota 1120 RTV Kioti DK-40, MF-135, Ventrac 4500Y
Remove left bolt as your looking from the front and loosen right bolt. These are carriage bolts in slots on the bottom. If they just spin you might want to wedge a Screwdriver between the Frame and Radiator. See the Massey Vintage forum as a lot of other Posters have asked the same ? including me.