I've been doing an engine overhaul on a 1980s Tecumseh 7hp iron block vertical shaft engine for another forum member; valves, ignition, charging system etc and just when I thought that I was nearing the end I've found that some vandal has carved a chunk out of the air cleaner backplate and canister. Those parts were still current on Atco 24s etc using the horizontal shaft Tecumseh H50/60 right up to the 1990s so there should be a few around, but not, it appears, in the UK . In the USA, yes, with the appropriate carriage, duty and vat etc., but not over here.
If anyone has a backplate and canister to sell, please contact me - all reasonable expenses paid . Otherwise I will have to get the welding gear out, not really my forte!