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    If a coil looks the same as another ... is it?

    I have a 90hp 1984 Mariner needing coils and I see people selling them from other HP motors but they look the same. For example, would a 1987 150hp Black Max coil that looks like mine be the same? Is there a difference in the ignition coils based on horse power or are the mostly the same if...
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    What are the numbers on the back of the coil?

    I am trying to locate some replacement coils for my 84 Mariner 90hp I6 and I was curious as to what the blue green looking numbers mean on the coils. Of the six I have four have the number 1364, one is 0025 (it has a metal contact going from the ground to the ferrite core) and one is with white...
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    How to check and test a Mercury Mariner Coil

    The technician at CDI gave me some pointers on how to check a coil and I thought I would pass them on. The first step is to do a Ohms test to see if the coil is good before going on to the visual internal ferrite core inspection. Meter Test: 1. With your ohm meter, measure the coil ground...
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    How do I DVA test stator non-starting motor

    Trying to figure out some electrical problems as the motor I got used has never made a spark. How do you do a DVA test on the stator if the motor will not run on its own power? I have plenty of charged marine batteries to turn the motor but I did not know if that would even get close to...
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    Any clue who made or makes this trim & tilt unit?

    I just got this from a scrap yard (sad what people throw away for a few $). They charged me $16.00 for it. I hooked it up and it went forward and reverse perfectly (not under load) but I have no idea who makes it. There are no identifying marks so I was going to guess a overseas manufacturer...
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    Trim Tilt Unit Identification help

    I bought this today at the metal scrap yard (it works perfectly) but I do not know what the brand is or what it fits. I cannot find any manufacture markings. I have a '83 Mariner Straight 6 90hp that I had hoped this may work with after some configuration or modification but I didn't want to...
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    Mercury Mariner 90hp no ignition spark help

    I am debating on buying a '83 Grumman 5.0 and it has a 90hp Mariner on it that seems to have a few problems. The owner says it fired up last year and that he replaced a switch box but I am not sure what was really done. A little history before getting real dirty. The motor looks good. He...
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