Small Engines (Lawn Mowers, etc.): Snapper rear axle seems to have locked up, snapper riding lawn mower, riding lawn mower

Question
I have a Snapper riding lawn mower and it used to run and cut grass then i moved it over to the side of the garage and then i tried to push the mower but the rear axle does not let the wheels turn at all. Any clue what this might be? Maybe a neutral switch disengaged?/

Answer
If your mower is the typical Snapper it has a disk drive system.  If you look underneath you will see a large aluminum disk in the rear.  This is deriving by the engine.  There is also a rubber coated disk perpendicular to the alumnium disk.  When the rubber disk is touching the metal disk the rear axel is in gar. When the rubber disk moves on the metal disk the transaxel is turns as the disk moves across the disk the transaxel goes faster or slower or into reverse. The point between forward and reverse is neutral.  Sit on the seat and push the clutch in and out.  Is theatre resistance?  Does the rubber disk move away from the metal disk?  It has to be to be able to push the mower.  It sounds like the rubber disk is engaged.