Really? They were actually pretty popular. They were made from the mid-60s all the way up into the mid-80s. Ski-Doo bought them out in the 70s sometime, so they started getting Rotax motors and they started to look more like orange Ski-Doos. I have a '73 Capri 340 fanner I really like it. It's no speed demon, but it is surprisingly comfortable to ride and a lot of fun, too!
Maybe this will help:
Download the 1971 parts manual PDF, open it and scroll about half way down.
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