Excellent video Bah 53 finder's and possible keepers for to fix up on days to tinker with ! I know years ago my late dad found a Yellow Chainsaw made back late 1960's to 1970s it Skill power tool company from Winnipeg Manitoba Canada 🇨🇦it need fuel line and spark plug it plus rip cord! Lol still runs perfectly no problem ever it 52 CC motor I heard and hard find parts for but Orange and White Skihl some parts work on it ! Plus found push mower Yellow Poulan brand with 3.5 hp Briggs and Stratton only needed air filters and spark plug to it fire up ran for 23 years he find those at Local Tranfer Station Dump in metal bin bought for $50.00 , another $25.00 in parts to fix up with and help lots out since!
the snomobile motor is a Rotax , on the fan cover you will find the bore and stroke as well as the model number on a small metal tag . you should check what it is , some are rare and valuable to a snomobile connasuer . My guess is early 70s , I have owned a few real old Ski Doo machines.
That lawn boy looks like one of the 50s Iron horse models. If you can get that running it might actually be worth quite a bit. I see a few on Ebay listed for over $1,000. I don't know if people actually pay that much these days, but I do know the individual parts are quite valuable.
I think the model code was C-10 but not certain...it would be on the part of the shroud that covers the side of the cylinder head, and the serial number was below it I think. That's from knowledge I got from an old dude awhile ago, so I could be mistaken, but It's definitely worth some effort.