Does anybody know what the temperature values Temp1 en Temp2 stand for? Is it in Fahrenheit? And what's the difference between 'Hour meter' and 'MR hour meter' To avoid the 'How do you activate the service menu discussion' Switch it off (in stand-by). Press the button below the 9 and wait for 3 second (do not hold down the button, just press it). Then press left, up, left and right. Swith the screen on.