I had the odometer on my K75 go out twice due to worn and broken gears. There are 4 plastic reduction gears that allow the small electric motor in the odometer to turn the numbers over. I had to replace all of my gears as several teeth broke off. I asked Jeff at www.odometergears.com to make a set for me and he now has them for sale.
I know I saw a few threads recently with people who had the same problem with their odometer that I have, so I thought I'd let everyone know that there is a fix out there that doesn't require buying a new gauge pod.