OK, thanks for the suggestions. I have the the Deere wrench. Is it necessary remove the side panel to get at the filter and remove it completely. It's a tight fit. If you remove the panel, how? It appears that there is only one screw attaching the panel to the frame.
The panel can be a bit finicky to remove and replace as it's really wedged in there and you don't want to break any of the tabs. On my X500 I just remove the 8mm bolt which holds the panel and then the panel has enough free play to easily get a wrench on the filter and remove it.]