Have a problem with my 149 Hydrostatic. Been working in a cemetery resetting tombstones, cleaning, etc. and putting some 'road time' on, hauling dirt and other material to other locations about 1/2 mile one way. Never too much weight on the trailer, maybe equivalent to 6-7 moderate size wheelbarrow loadss at a time. Hydro has been working well. Thursday nite I was almost to my destination with a load of dirt and the 149 started to very gradually slow down. When I was about 40' from my destination, there was no more movement, forward or backward. I left it where it was overnight, hoping it was just low on fluid. Next day, topped it off, started it up and no change. Hauled it home and removed the fenders, etc. No loose fittings, relief valves are ok. When it starts up, the drive shaft immediately turns, even when the hydro is in neutral. The short piece that comes out of the back of the pump assembly does not turn when the drive shaft turns. Starting to look like an expensive fix. The linkages appear to be ok. I read the hydro info and looked at the pictures on this website and I fear it's not the linkage.