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    Shaft length question

    What dimension do manufacturers mean when they quote the shaft length for an outboard? Is it from the transom to the prop centre line or what? How do i know what shaft length i need for my boat? Thanks for any info
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    What is this ?

    Glued and ti-wrapped on to the ignition coil cover on the right hand side of my Mercury 90hp o/b (3 cyl, 1989 model) is a small black component with a blue wire coming out of the top and three wires coming out of the bottom (white black and green). The wires disappear into the ignition area...
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    Sparky problem

    My 1989 Merc 80hp 3 cyl came to me from its previous owner with NGK BUZHW-2 plugs fitted. These, I am told, are high resistance plugs.<br /><br />I have had problems starting the engine when warm. I have reverted to BUHW-2's but have yet been able to test the engine. Would this make any...
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    Spark plug advice please?

    My 1989 Merc 80hp 3 cyl came to me from its previous owner with NGK BUZHW-2 plugs fitted. These, I am told, are high resistance plugs. Why would the previous owner wish to use these when the recommended plugs are BUHW-2. (I am assuming this was deliberate rather than a mistake)<br /><br />Anyone...
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    A question for Trent

    In a previous reply to someone with a bad idle problem, you said "Its time to clean the carbs and put a kit into it."<br /><br />What sort of kit do you mean? Is it a straight forward job balancing/ tuning the carbs afterwards?
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    Anyone know what normal compression figure is?

    Anyone know what the normal cylinder compression figure should be for a 1989 80hp 3 cyl Merc o/b? I am getting 110 psi on each cylinder with the engine cold. Is this OK? Thanks in anticipation.
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