I have a new to me '02 250 JD skid steer. When I got it, it had 204 hours on the hour meter and there was the icon of an hour glass flashing in the hour meter window. Thinking this indicated a need for maintenance, I changed all the fluids and filters. Now the hour glass flashing is much slower, but still there. Does this indicate a need for further maintenance or what? Is there a way to reset it?