Our 2001 420 has an ST50 but the display and wind indicator and speed instrument were just replaced at boatyard but the speed is about 25% too high, and the wind direction 180 degrees off. In reading about how to calibrate I found two sets of instructions---one says to enter dealer mode by holding the disp and true wind buttons down for 12 seconds until it flashes to dealer mode. That doesn't work.
The second from the manual says to go out and do two circles with the boat, then turn on, and then it will automatically calibrate? Anyone done that?
The second from the manual says to go out and do two circles with the boat, then turn on, and then it will automatically calibrate? Anyone done that?