How do you change the hydraulic fluid in a Massey Ferguson 240?

To change the hydraulic fluid in a Massey Ferguson 240, first ensure the tractor is on a level surface and the engine is off. Remove the hydraulic fluid drain plug located at the bottom of the reservoir to let the old fluid drain completely. Once drained, replace the plug, then refill the reservoir with the appropriate hydraulic fluid through the fill cap, ensuring it reaches the correct level indicated on the dipstick. Finally, run the tractor briefly to circulate the new fluid, then check the level again and adjust if necessary.