I found a set of wheel weights that are currently painted white.
Outside of washing and degreasing is there any more prep I should do before spraying the Kubota Orange?
Depends how long you want this paint job to last, and how good you want it to look. A good prep job can make even cheap paint out last the most expensive paint with a poor prep.
I would at least scrape and or sand any rust, if you don't use one of the newer rust converters on it.
Also, slightly rough up the existing paint before putting down a good primer coat, then spraying the top coat.
I don't mind painting and don't mind doing prep work; but I expect to paint my own equipment one time only.
Robert