Just bought the tractor from a neighbor, but have used it before. Seems to me that I recall pressing the forward pedal on the HST and getting throttle response as well as selecting fwd/rev. Thought maybe a linkage was loose/missing, but don't see where it could be missing from! Looks like a hole for a link in the throttle lever, but nothing on the arm from the HST shift mechanism. Am I mistaken about the throttle control?