Tractor starts, engine runs, blade moves but tractor won't move in forward or reverse. Cleaned out all debris. Belt is on all pulleys okay... everything else seems to be working okay. What else?

This might take two people but , with engine off, push in the cltch, put in gear and release the cluch while the other person reaches under the fram above the deck to check on bellt tension. Also. Check your linkage between the shifter and the trans, the linkage could be froken or disconnected.

Did anyone dink around with the rod that comes out the back that disnegages the driveline so it can be pushed?

Tractor starts but doesn't move replaced the tranny twice but nothing

Did you take off rear tire and lose key