I don't think there is. I did my 50 hour service yesterday and while I was under there greasing stuff and changing the hydraulic filter, I was also checking everything else out too. Nothing looked adjustable at all.
also, you other xg3025 owners, when I was doing my service yesterday, I was expecting the oil pan to be split with two drain plugs because of the proximity of the front drive shaft, but my drive shaft goes under mine, and there was only 1 drain plug....so did I read it wrong or is the oil pan with 2 drain plugs for that reason only on the small frame tractors?