Great advice not to move nothing d/t high change of about fusing rust that might be more saveable. Don't waste time and pollute enviornment with dang wimpy wd40, which I will never again capitolize, as it evoporates fast and has nil rust protection, seen it rust over night floating on top of condensation layer. Only thing its good for is cleaning electrical terminals and oily stuff. Get serious and think ATF or diesel. In olden days they'd dunk a whole bike in a diesel barrel for months before attacking. Best way if not in a hurry is a barrel of molasses and water with stuff opened to let flow in everywhere for a season or more. ONLY rust will be removed, nothing else metal or other wise, but do take the seal and wires cables off.
There are solvent methods, acid alkaline treatment methods, electrolytic/galvanic methods and chelation method. Moles-asses weak organic acids grab on to metal oxide molecules so is the chelation process.
