I'm having problems with my spedometers on my boat. The speed they are showing is way off. Does anyone know how I could calibrate them to be more true?
There should be a little dial under the dash on the left side that you can calibrate it with. Its small so you may need to get under there to see it. Good luck
If I remember correctly the little dial on the 04's is actually on the right, but basically, with a GPS and that dial you can calibrate. If it's way off, it may be time for a new paddle wheel.