Hi I have a John Deere 5410 that has 610 hours on it .it's always been kept in a shed .I used it about a month ago to bushhog and it worked perfect but I went to start it the other day and the steering will barely work also the front end loader is sluggish .all of it seems like it's not getting enough hydraulic oil to it .the hydraulic oil is full looks brand new .it's almost as if the oil is bypassing.i had a hydrostatic mower one time that had power steering and sometimes the deck lift lever wouldnt return to neutral position and it would act just like this does but the only remote lever is in neutral position on the tractor .I was wondering is there some kind of lever wouldnt r know or something on the tractor that could have accidentally gotten moved to create this problem .I can't find anything but I thought someone else might have had the same thing happen to them .I guess my next step will be to replace oil filter and check the screen in the back .It just seems like if that was the problem then it would have gradually gotten worse over time .it worked perfect the last I used and the oil looks like you just poured it out of the can.if anyone has any ideas I would appreciate it very much .