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    1978 Mercury 800 80hp Water Pump

    I replaced the water pump impeller on my 1978 Mercury 800 80hp. The lower housing was easy to remove but now when I try to reinstall it there seems to be something wrong. It will go on then stops about an inch or so from mating. I'm obviously doing something incorrectly but I don't know what to...
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    Starting Issues 1978 Mercury 800

    I recently purchased a well used 1978 Mercury 800 80hp outboard and I am working on getting it running. The previous owner could not tell me the last time it ran. I have replaced a good portion of the wiring and now I am getting spark. Now the issue is fuel. I tried priming and starting but it...
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    Mercury Switch

    I recently purchased a well used 1978 Mercury 800 80hp outboard. The internal wiring is a mess. I am curious to know what the "Mecury Switch" does. I am going to need to replace the switch because there is only one wire left on it and it's badly worn.
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