Hydroharry, I would not clean a newly repainted Cub Cadet with the WD-40.... I see a lot of tractor owners clean them using soap and water, compressed air, and a soft cloth.
I use WD-40 on my International 1450 because it will begin to remove any rust. We always kept a 55 gallon drum of WD-40 in the shop, and this is what we used to disassemble and clean the molds, and other machine related parts after any period of a production run. Sometimes that would run for months on end, and we'd have to shut down to service the mold and machine.
I generally just spray the tractor's outside down. I don't make it a point to contact every square inch of the tractor because in short order, your rag becomes absorbed, which allows you to cover area not sprayed. By then, I grab another clean and dry rag because the absorbed rag tends to swirel around and not pick up the grease/dirt dislodged by the WD-40. The clean rag picks it up like no body's business! I usually just wipe down what ever I can reach on the fossil fuel burner, and storage tank.
Tires and rims get a liberal dose, and wiped down as well as the outside perimeter of the voltage regulator! You can mostly tell if you are leaving behind any film, much like if you were using a carnauba wax. I think the warmth of the sun helps the liquid to be absorbed into the metal.
Again, this application would be for non-show International Cub Cadets. If you use the WD-40 sparingly, the tractor does turn out to be rather dry, and dries over the course of a day or two. You may spray your clean rag with the WD-40, and then wipe down your tractor for more of a "dry" approach. But, if your going to be joined up in a plow day, or you plan to wrangle through some heavy dust clouds....its best not to put anything on your tractor before-hand that is going to make dust collect. You will see, that the WD-40 will cut grease, grime, and dirt that plane old soap and water won't touch. I have not noticed and damage or removal of paint on my "work clothes" Cub Cadet. Over the course 8 years that I owned a model 71, I have discovered a great preventative maintenance that will leave your International Cub Cadet respectably clean!