X2 what five points said. Them numbers would be a good starting point, usually the rears are a little lower than the fronts.Hello Mick and welcome to the forum! Spots to check for tags can be under the seat, under the hood, on the back by the hitch area, below the steering near the floor. I'll see if if I can find something for you unless someone jumps in. Meanwhile enjoy looking through the forum.
Front should be @14 psi and rear @12 psi based upon a a husqvarna I have (just a ballpark) You can vary your pressure depending on your yard conditions and what you are doing with your mower such as using a loader, pushing a blade, dragging a plow etc. Lower pressure for better traction, more pressure for a heavier load.