New to the forum, not much experience but not scared to make a mistake. I bought a 97 craftsman GT3000 hydro for cheap money, pulled and rebuilt the motor. Put it back in, runs like a top but the tractor won’t move. It is a hydro transmission and it was working just fine before I pulled the motor. I’ve tried purging the transmission, I checked engine speed by tightening the spring on the governor, I’ve replaced the belt and I tried pulling the motor foreword to tighten the pulley. I’m not a hundred percent sure but the belt seems kind of loose. The belt turns the transmission fine When it’s running. I’m not sure but seems loose. Kind of a shot in the dark but I know there’s some experience on here and figured I’d throw it out there. Pictures included because I know you’ll ask.