How do you change hydraulic oil in bobcat 753?

To change the hydraulic oil in a Bobcat 753, first, park the machine on a level surface and shut off the engine. Remove the hydraulic oil filler cap and drain plug to allow the old oil to fully drain out, then replace the drain plug. Fill the hydraulic system with new oil through the filler cap, ensuring you use the recommended type and amount specified in the owner's manual. Finally, check the oil level with the dipstick and run the machine briefly to circulate the new oil, re-checking the level afterward.