I have just recently picked up a 1990 imported Kawasaki zzr. The Speedo is in kph. In the lower centre of rev counter there is a four digit counter that only advances when the bike is moving. The thing is though, it only advances ever 3/4 of a kilometre and I can not work out what it is for. It will not reset and only goes up to 9999. any ideas as to what it is for. taz.