Small Engines (Lawn Mowers, etc.): cub cadet RZT 50 inch, cub cadet rzt 50, hydro pumps

Question
what would keep my zero turn cub cadet from moving forward or backwards. It crank no problem, however will not go forward.  What can I DO.

Answer
There are a number of things that could be the problem.  The starting point would be checking that the belt/s are tight and engaging their pulleys.  Then that the input pulleys on the hydro pumps are turning the input shaft.  Also that the bypass valves on the pumps are engaged.  Check these things and let me know what you find.  Thanks, PK.