How add hydraulic oil to a John Deere excavator?

To add hydraulic oil to a JOHN DEERe excavator, first ensure the machine is on level ground and the engine is off. Locate the hydraulic oil reservoir, typically marked with a cap labeled for hydraulic fluid. Remove the cap and use a funnel to pour the appropriate hydraulic oil into the reservoir, checking the oil level with the dipstick if available. Replace the cap securely after adding the oil and check for any leaks before starting the machine.