Earlier today, for some reason, I picked up one of my old Tachs that I had laying around. It's a Faria Tach off of a boat with that had a Yamaha 150 on it.<br /> Flipped it over and read these words...<br />"adjust tach by turning dial toward number that corresponds to your alternator".<br /> (little dial with numbers 1-2-3-4-5-6). <br />That sort of confused me and I figured the word "cylinders" would have made it easier to think about.<br /> Then I noticed it was pointed toward "5"...and I've never turned this dial.<br /> Just makes me wonder...Is I missing sumpin here?