This is my 1985 413K and when I got it we were sure that it wouldn't push much snow. I only had trouble with one storm due to very wet snow.
It's got a 7' fisher hydranlic plow with a plastic scrapper edge. The plastic really reduces the weight of the plow.
I learnt really quick to stop when the plow starts to lift over the snow. Back up and then hit it again. I plowed all winter and it was a blast....I alsmot rolled it one night when I was backing up and missed a snow bank....it almost sent me over.
One thing bad is trying to drive it with big boots and a big jacket....shifting, plow lever, armstrong steering and it didn't like to idle.....on top of that trying to drink a pepsi.