Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

Folks I am in need of help in the form of information---I have a Stanley(Murray) Model 525607x692B ---52 inch rider.   While mowing today it hung in the forward drive.  Cut  two acres of grass just going forward.  Can,t see anything wrong with the linkage but my foot operated lever will not go to neutral or reverse. Called Engine Southwest, the parts source in this area and they tell me the hydrastat comes in  2 pieces---the differential  ($215.00)  and the Pump-($310.00) It could hardly be the pump for it runs too well in forward.  I suspect it to be the differential  My question---can anyone tell me if I could install my present pump on the new differential or does it take special know how? Would appreciate any help----Your friend--Will