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    Trying to calibrate new tach

    Hi Folks, I have a 1982 Fisherman 204 that I just purchased this year with a 2000 Johnson 130. The engine "seems" to be idling normal around 700 rpm but a brand new Teleflex tachometer is registering between 1300 to 1400 rpm. The unit has an adjustment screw for "fine tuning". I have a very good...