What kind of hydraulic oil does swisher zero turn mowers yous

SOURCE: I have a Grasshopper zero turn mower that uses

yes just reguler hydralic oil it wont hurt a thing. but dont use atf its for transmissions in vehicles

SOURCE: best way to change hydraulic oil in zero turn

I don't understand why you want to change, it is a closed system, so no contamination can get in. Anyway, there should be a small tank somewhere where the hydraulic oil is checked. You can siphon the oil out of there with a oil suction gun or turkey baster, and replace it with new fresh oil.
Do you have a reason why you think the oil is contaminated or has been overheated? It is quite a rugged oil meant to stand up to brutal environmental conditions like continuous use in high heat, and in plow trucks operating in extreme cold with continuous duty.

SOURCE: John Deere F620 zero turn mower

you probably have the belt on wrong, check your manual to see if you have it on right.

SOURCE: TORO Z5000 zero turn mower. right side

it should hold hydralic fluid there should be a resirvour somewhere on the back along with the pump you should be able to check the level there and if you don't get the leak stopped it will lock up the whole drive system.

SOURCE: Snapper Yard cruiser zero turn hydro pumps

should be on dip stick other wise use 90 wght wont hurt anything