I read through the pile of posts about this and only found one person who posed the same situation / question as I will here but no answers were given.
Last year (after i got a used 2305) I felt like I had to readjust the deck every time I installed it. I went through the whole setup instruction (per manual and forum advice) and got everything perfect.
With Deck OFF, I adjusted the main link next to tire and got the little "thumb" piece within 1/8" of the mower height cam. Next I adjusted lift arms to around 1/16" from frame stops. Everything worked great until I attached deck.
With deck ON, I couldnt rotate knob. I'm guessing the weight of deck took up some play in all the linkages and causes the thumb to now rest on the height can. At that point I readjusted everything above to work correctly with the deck on. Again... things worked great. Great mowing height, knob rotated when all the way up, etc...
Take the deck off, now there is no weight on those lift arms and when I lift the 3 point all the way up, the lift arms hit the stops. I'm guessing that is bad as well.
If I adjust the lift arms to be within 1/16" with deck off, when I install the deck, those lift arms are about 1" below the stops... is that normal? Sure doesn't leave much adjustment for mowing height.
Should I adjust everything with deck on and not worry about the arms hitting stops?
Last year whenever I took deck off, I'd turn adjust the arms so they don't hit the stops, then after I installed deck, I'd re-adjust everything so I could get higher height. It would be a 15 - 20 min adjustment every time I put the deck back on. I take it that's not normal...
I love the tractor but my experience is that it's a PIA to convert it back to a mower. Maybe I'm blessed because I also have a bobcat ZTR that requires no adjustment. But dammit, I like driving the tractor and sometimes i want to use that to mow!