How do you change oil on 1840 case skidsteer loader?

To change the oil on a 1840 Case skid steer loader, first, ensure the machine is on a level surface and the engine is cool. Remove the oil drain plug and allow the old oil to completely drain into an appropriate container. Replace the drain plug, then remove the oil filter and install a new one, making sure to lubricate the rubber gasket. Finally, refill the engine with the recommended oil type through the dipstick tube, check the level, and run the engine briefly before checking again for leaks.