Hi Jim. Not that it affects me in any way - But the Parts Catalogue says "Built in Spain" rather than "Built for Spain". That would be made for general sales, maybe not N.America?
The filter mesh is available as a seperate Part Number from the 'can' on that particular model which is why I suggest it must have been replaceable, therefore removable as 'beenthere' has noted.
Bodin: As far as washing the mesh - Any clean solvent - Parts cleaner, Brake cleaner, White Spirits, Kerosene, Spray-Gun Cleaner, even petrol if you have nothing else, would do the job.
I'm interested to see a pic or two of the air intake plumbing from Bodin as there are a couple of other Oil Bath filter set-ups listed.