I am demoing a 2000 Exmark Lazer HP from a dealer that has 1200 hours on it. Is 52 inch/23 Kaw motor. The acres I have mowed Friday night and today look like a carpet for a yard. Looks just like golf course mowing. One property takes me 5 hours to mow Saturdays with a Sears 44" rider but the Lazer cut it down to 3-1/2 hours and half the land was mowed up to last month with a big bushhog mower so I went 1/2 speed or less for that area. This may be typical for hydo's (I don't have hydro now) but whenever I move one of the wheel driving levers the mower squeaks pretty loud. My wife took it for a joy ride in the back of our 5 acres without the mower blades engaged and you can still hear it from the back of our property. Is this normal on a Lazer HP or a hydro in general? Is hydro or something else going out? How do you tell if hydro is starting to go out?