Yeah I know what the triangle block does. I'm talking about that arm sticking up from between the rails. It has the straps connected to it at the bottom, I think its supposed to pivot in there. Having never really seen a snowmobile suspension before, how it's supposed to work is not immediately apparent.That first picture if it does what Polaris does it is for adjusting the spring tension i.e suspension for a soft, medium and firm ride out of the springs. Not sure on the Arctic Cats though but Polaris ones from that time do that.
And dan is dead on had it happen even to mine on the older Polaris square ones from the early '90s been lucky so far with the newer version they put out in the late '90s from them. It just happens but as he said not enough of a snow flap or not in the right position and not enough snow on the heat exchangers will cause overheating.
I change out springs every few years it is one item that people tend to forget about. For the cost of them I just replace them for the 40-60 bucks they cost for the pair and be done with it. Did it last year on the one as they were 8 years old and starting to sag just a little bit so changed them out before anything bad could happen. Have to do it on the other snowmobile this November when I am healed up from another surgery the 28th along with 96 new 1" studs as well so guess who gets to sit on the cold concrete floor with a dremel tool,lol.
So basically I can extend a flap and make a bracket to keep it off the track, and it should redirect enough snow to avoid any overheating issues.
I think the springs are ok, I can bounce on the machine and it doesn't bottom out and they are on the lowest setting. I think that flap got ripped up dragging it off of trailers.
It's getting close, I need to get a battery and front end parts. Nice to save something from the scrap yard and put it to use. I know the wife will be pleased, she's tired of seeing parts all over the place.