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    Another F115 idle and stall issue

    Hey guys, been a member for a little while now, been doing lots of reading but this is my first post. Im a marine mechanic by trade, but primarily only work on Mercruiser sterndrive go fast stuff; Fountains, Formulas, Cigarettes etc. (500hp, 500efi, 700sci, so on and so on). So my experience...
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    Need help with timing on '75 merc 850

    My motor can be a pain in the *** to get started as well as almost stalling when I try get on it from a standstill most of the time. once i fiddle with it enough times it will eventually get up and go and once its there its golden. Its very frustrating and Ive tried many things to fix it. Ive...
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    Where do I add power trim fluid??

    Attached is a picture of my power trim pump, its attached to a 1975 Mercury 850, I'm curious as to where I would add trim fluid. Thanks
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    Dual batteries on an outboard?? please help

    I have a 197something mercury 850. Im putting in a small stereo unit this season and Im planning on setting up a second smaller battery to run the stereo off of since outboards do not provide much charging power and i don't want to drain the battery on the water. I was going to wire up a switch...
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    76 Merc 850 fuel pump rebuild?

    Hey guys, I've been having some fuel delivery problems with my motor. Im rebuilding the carbs as well as the fuel pump. I know how to do the carbs but I don't know what to do with the fuel pump, or where it even is for that matter. Whenever i pump the bulb in the fuel line, it never gets stiff...
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    1976 Merc 850 not peeing properly

    I have a merc 850 and its not peeing like it should, i assume something is clogged in the tube, because i took apart and replaced/cleaned the water pump. I also cleaned out the short tube the connects the block to the hole in the side of the motor housing. My question is does anyone have any...
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