How do I get a wizard rider,probably in the 1990-1996 model year range, appears to be hydro drive, to free roll? I've put the F-N-R levr in the "n" position, and moved the speed selector to various position, but still no roll... I know some hydro's have a release valve lever on the rear somewhere,but I've not found one on this mower. It's a 14.5 hp B&S motor, with a 42 cut I believe.
Thanks for the help!

Look closer at the rear of the mower there should be a disengage lever. Are you sure it is not a manual and the park brake is on?