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    1991 Mercury 150 Blackmax Poppet Valve

    I bought a boat a little less than a year ago with a Blackmax 150. The oil injection has been removed so I premix at 50:1, I do a lot of idling and it has had a problem with fouling the plugs ever since I got it. I have cleaned carbs, and check all recirc lines, and rebuilt the fuel pump. After...
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    Mercury Black Max 150 Fuel Leak

    I have a problem with fuel leaking out of one of the small hose fittings on the top side of the block just behind the reed block, I have changed and put tie wraps around this hose to try to get it to stop but nothing is working. Now I'm wondering if it is not leaking from around the house itself...
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    Mercury Black Max 135 Carburetors

    I bought a 1995 Ranger R77 Sport with a 1991 mercury black max 135 a few months ago, and it has ran great with the exception of a rough idle. I finally got around to ordering the carb kits and pulled them off and rebuilt them yesterday, after putting them back on it ran better but still a...
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