haha, I kinda had to break it to do it. it still works tho and if I did it again I'd know what to do so I wouldn't break it as bad. you have to take it apart and then kinda break the odometer out. or, if you want to spend some time, just turn the gear back until it's to 0. (that will take a while)
note: this is a odometer off my old dx cluster. I swaped in a ex/si.