Apr 12, 2018 / Johne Deere 4120 hydralic fluid change #1 T Treeman999 New member Joined Feb 3, 2018 Messages 4 Location Rusk , Texas Tractor John Deere 4120 I changed the hyd. oil and filter with not much problem. I was unable to get the "screen" out to clean it. Only 750 hours on tractor so I just left it alone.
I changed the hyd. oil and filter with not much problem. I was unable to get the "screen" out to clean it. Only 750 hours on tractor so I just left it alone.