Axle tool
 

Years ago I bought a special tool to suit the FJR1300 I had as the same as the XT no tools are supplied to remove wheels in the kit.

I couldn't find one for my XT660Z so I thought I'd make my own.

So bought a 22mm combination spanner, Cut off the open end and welded on a 14mm bolt.

So 22mm ring for the back axle and 14mm bolt head for the front axle.

It's not perfect but it works. Just take a 14mm bolt and turn a 14mm nut into it until it locks tight. If the flat surfaces don't line up perfectly, play around with a thin washer.
I used it before I cut off a 14mm hex head for the tool kit.