At the 2021 September Fall Swap at the museum, I sold a 1972 Ski Doo TNT 340 to someone. I recently found the original owner's manual. I will send the manual at no charge to the person who bought it. If you can text me the frame serial number or the engine serial number and your name and address I will send you the manual. I know this is a long shot but if you see this you know who you are. See the photos for the number. Thanks for the site.