Just took out my new boat for the first time and the tach is reading super high seems like double what it likely should be. My builder is closed until Tuesday and I don't really care to haul it back up there so I hope to find an answer here and fix it myself, anyone have any idea's as to what I should look for to troubleshoot?
Some tachs or sending units have a setting for 8,6, or 4 cylinders. If you have one of these then and it is set on the wrong setting then it stands to reason as to why you seem high.