You need to wash it good with a pressure washer to get all the dirt off you can. After that you can use some oven cleaner to cut the old paint, may have to do it several times. I think the easiest was to get rust off is to sand blast. Lots of people use wire brushes or wire disks on a drill but I dont think you can get all the rust with that method. After you have the grease, dirt, paint, and rust off then you can do any body work if you want. Clean everything with paint thinner before you start with the primer to remove the sand and things that might have gotten on there. Primer will take about 1/2 a gallon to do the whole tractor. If your going to do a decent job I think you need an air compressor and at least a siphon type paint gun. You can get them about anywhere and will probly pay for itself in the end. After the primer dries then you should put two coats of paint. Will probly take about 2/3 of a gallon for the Super A. Follow the directions of the paint for the thinner depending on if you brush it on or spray it on. I dont think it matters one way or another on cast parts. If you use the hardner you need some kind of breathing devise. If you decide not to use a hardner then after the paint dries it will be "soft" for several months and will scratch easly. After the paint sets up then put it back together. The bolts heads will have to be touched up after assembly. Make sure you dont paint the threads on the bolts. Then add the new decals.
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