Sluggish forward and reverse

[Calvins753]

My 753 Bobcat suddenly decided that it didn’t want to go forward or reverse. At first it was sluggish and now barely moves. The engine is running fine. The troubleshooting guide tells me the hydrostatic pump replenishing are not seating. Can anyone tell me the location of these valves? Help please

 

[reaperman]

Did you check the drive belt?