Clutch or transmission trouble

Hello all, I hope I can get some help here. I have a 02 grizzly 660 and I’m having trouble with it. I was plowing with it a couple of weeks ago and it just stopped moving unless I gave it full throttle, then it would barely crawl. It was a very cold day that day so I thought that that had something to do with it. I left it sitting that night and came back the next day and nothing. From what I read I thought maybe my belt got wet but I opened the cover on it and everything was dry other than there was some belt shavings inside around the cage. I replaced the belt today thinking that it would solve my problems but it still will not budge. I’d appreciate any help. Thank you