Now here Murray Ohio has been out of business for over 10 yrs so some parts are hard to come by. But it should have a Sundstrand hydro pump. It sound there is a seizure in the are of the shaft. but I wouldn't mess with it unless you can find the IPL for the hydro pump for you find its model number.
Just to note Briggs took over the Murray line but not the Peerless transmissions which Husqvarna did not providing parts for the older transaxles.
