OK, I have not been fooling with my new LX 2610 this summer much. I have got in my head somewhere, maybe here - that the hydro filter needs changing at the 50 hour mark, which my tractor just passed. I got the filters a while ago and went out to change them this morning and looked at the owners manual to do it. I thought it seemed strange to change the filter without changing the hydro oil. IT says nothing in the owners manual about doing this filter change. CONFUSED.