She normally gets the dust blown off her with the compressor, however I couldn't drive it to the compressor last time I was there. Bathing a tractor on a limited water supply in the middle of a drought will rank a low priority although understand the dust is not great for them in the long run.Give that girl a bath to start with!
I was having a hey of a time starting my girl and a good pressure wash, new battery and some tape over the rubbed through wires kept her going.
This winter is a rewire, it will be a hey of a lot easier to do so cause she doesn't look like a dirty girl?