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    tachometer related to voltage regulator

    having trouble with tach readings, I purchased this used engine to put on the boat and wanted to see where I was reving at..purchased new faria tach and adusted the dial on the back as per manufactures guidline. The readings have been erratic. could the voltage regulator be the cause? I have...
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    91 merc 40 hp cutting out at wot

    I have 91 merc 40 hp 2 stroke 4 cylinder,was rebuilt due to over heating...stock pistons and rings with a good honning,new switch box,fuel pump and water pump kit & triggar coil,cleaned carbs and new plugs...5 tanks of mixed fuel with oil injection hooked up for break in...I have disconnected...
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    mercury tachometer and harness

    i have a 1990 merc 40hp classic ,2 stroke 4 cylinder...what should the rpm be at wot ?..currently 5200 rpm..prop is 13 pitch...and this is being measured with a scan tool from work...i am currently looking into a tach and wiring (5 pin) but my dealer is having a hard time finding what i...
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