So i expect youre going to spray it yourself then, yes its painted from the factory so paint stripper and a selection of wire brushes both powered and hand would do the job, might take a while, but who cares, refurbs shouldnt be rushed. if you do use paint stripper, wear goggles and also with the wire brushing, you wouldnt want that stuff in your eyes! Might be an idea to paint a layer of rust cure solution on the bare frame before re-painting too, you will need to suspend the frame from something (tie it up to the rafters) so you can spray all over including underneath, give it all a wipe down with a lint free rag thats dampened with white spirit to clean and de grease it before the rust cure and painting process.