You push the button under the dashbord and keep pushed in and at the same time switch on the ignition, then will the indication on the speedo start flashing with the current calibration and will go from left to right automatically if you don´t do anything and then goes over to km reading. If you like to change the caliberation you just pusch the button at the position you like to chnage and stepwise push the button to the desired number for each position.
Thord
