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    Blackmax 150 won't start.

    I have tried literally everything I can think of. I usually don't have any issues beyond cleaning the carbs etc but this one is stumping me. I have good spark on all cylinders, compression is 115-120 on all cylinders, carbs cleaned with new gaskets, new fuel lines, new plugs, and fresh gas...
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    Mercury Powerhead Swap

    Hi guys, I have a 200 2.5l xri s/n OD239688 that smoked the number 4 cylinder last June. I have since found a 1982 150 Blackmax s/n 6181651. I can buy the complete motor but I would like to just swap the Powerhead if possible. Everything is older on the Blackmax and I don't really want to...
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    Mercury 200 xri

    I think my 200 had a piston lock up on me. It's a 1987 year model it looks and ran great. I think it had been bored out before, can it be rebuilt even if it has been rebuilt before?
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