This model doesn't have an a timer adjustment that I can find.  To set the timer, you  push a switch next to the hydraulic lever and a green light lights up, then you move the lever for how long you want the timer to activate it.  Supposedly, when you key it all off, that clears the timer but I don't think it's clearing on this one and also, I don't think anyone has set a timer on this tractor anyway.

   I'm beginning to think it has something to do with the timer mechanism that is tied to the #1 lever but I'm going to switch the hydraulic  lines around and see if  #2 or 3 or 4 work as they should or if they have problems too.  So far, it appears the other hydraulic levers and outlets are working properly, but I'll switch to make sure.