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    Mystery Outdrive Gear Oil Leak

    I see, your not talking about the seal itself but the machined surface on the case around the seal, correct?
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    Mystery Outdrive Gear Oil Leak

    I will try a vacuum test on it as well and see what happens. On the upper unit seals doesn’t the upper seal hold oil in and the lower seal keep water out? So when would the upper seal ever be in a vacuum state?
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    Mystery Outdrive Gear Oil Leak

    It’s installed. actually bought a new one when I replaced everything else. Is there an advantage/disadvantage to taking everything off at once. The only reason I didn’t was because I just bought and replaced all the gaskets and did t want to damage them.
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    Mystery Outdrive Gear Oil Leak

    I'll start at the beginning with this in hope is provides additional content to my issue. At the start of boating season last year I changed the water pump housing and impeller, reinstalled and filled with gear oil. I noticed that when I filled the oil it only took about 3/4 of a litre of oil...
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    '88 Mercury 100 HP Ignition Problems

    I have a 1988 100 HP Mercury outboard. I have replaced the rectifier, stator, trigger and switch box and I still cannot get a spark on any of the 4 cylinders. I plan on replacing the coils, but from what I hear it is not common to have all 4 coils go out at the same time. I have ran all the...
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    Rectifier Problems

    I have a 1988 100hp Mercury outboard. I can get it to fire when I unhook the yellow wires from the rectifier but when I hook them up I cannot get it to fire. I have replaced the rectifier, the trigger and stator. Does anyone have an idea what the problem is?
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    Adjusting Oil Pump for a 100HP Mercury

    I have an 1988 100HP Mercury Outboard that I have recently done some carb work on. When I took the carbs off I had to remove the swivel arm that connects the oil pump to the carb and throttle linkage. When I did this I forgot to mark where the oil pump swivel arm was on the oil pump. I read the...
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    88 Mercury 100 HP Outboard

    I have a 1988 100 HP Mercury outboard. I have taken it out 6 times this year and I have had no issues. It fired up great and ran great the whole time. Last time I took it out it ran great all day until I went to bring it back into the dock and as I brought it back into neutral the engine stalled...
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    1988 Sea Ray Seville Stringer Replacement

    I started to repair a few soft spots in the floor of my boat and the more I dug the more rotted wood I found. As it is now I have tore out all of the wood from the driver?s side seat back to the transom. This includes removing all of the stringers from that point on. Luckily the front part of...
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