On the g1 bikes it can be changed back and forth. Hold the reset button on the engine hours or something like that can't remember right now for sure. It's in the owners manual if you can't figure it out. If its a g2 bike and they're not supposed to do it then I'm not sure.
I tried it yesterday as I couldn't remember for sure. Set it to the odometer reading. Press and hold the menu/select button for a few seconds and it will go back to normal. Helps if the bike is running. You know you did it right then when the speedometer goes back to zero.