You would be surprised at how many parts are still available from your local Evinrude dealer. Do yourself a big favor and get a parts book specific for your motor. If you go to the dealer with part numbers in hand, all he has to do is order it and take your money. But if you don’t have the part number he might not give you the time of day because he doesn’t have the book either.
I don’t have that particular book, but if I did, I’d give you a copy. Perhaps somebody else has it?
And as Richard suggested, lots of parts are right here from various members. Post a want ad on this website’s classified ads page (Webvertize). The ad is free.