Interesting. I always thought that the 4110 was like the 4010 except for a little bigger engine and split hydraulic system. Maybe this is on the second hydraulic system that my 4010 doesn't have?
The 4010 hydraulic filter is behind a cap that is behind the horizontal rod that holds the 3 ph lift arms. No way anything can damage it. Its location does require removal of one rear wheel though, to get the rod out of the way.