Ok after reading manual... I always read the manual first! The "Retard" position as I read it, is to slow the tractor from freewheeling down a hill or maybe offloading from the trailer for example. But is the tractor suposed to actually have powered movement in a real slow motion while in the retard position? Is that position something like a deep under gear? Or is it only for hold back? Mine does not have any power to move the tractor in that position. And I did get the manual downloaded so I can completely read it now thank you so much. Im in the Bitterroot Valley by the way.
On the models with no holding valve you use the retard position to "stick it" to the hill by leaving it in "retard" the opposite direction you are traveling. At least that is my understanding. If I am wrong I am certain to get flack in the morning.