How do you check the hydraulic oil fluid on a kubota L3350 tractor?

To check the hydraulic oil fluid on a Kubota L3350 tractor, first ensure the tractor is on a level surface and the engine is turned off. Locate the hydraulic oil reservoir, typically found near the rear of the tractor, and remove the dipstick or cap. Clean the dipstick, reinsert it fully, then remove it again to check the oil level; it should be within the marked range. If the level is low, add the appropriate hydraulic oil as specified in the owner's manual.