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    Bypass Trim Tilt Switch 1978 80HP Mercury

    On a project boat I bought I have the control box and trim/tilt pump shown in the attached photos. The UP trim button on the handle doesn't work due to the wires from the trim tilt switch being non existent as can be seen in the photos. There were no wires from the switch attached to the pump so...
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    1978 80 hp mercury gear shift

    Does anyone have any pictures of the gear linkage and throttle connection on a 1978 80 hp mercury. I want to check if mine is connected properly and also what is the correct part for locking the gear cable onto the shaft.
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    Exhaust Plate

    I have just replaced the water jacket and exhaust plates on my 1978 80hp Merc. when I lay it over to replace the bottom bearing I noticed the gap shown by the arrows. Is this ok? Should that gap be there?
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    torque settings 1978 80hp Mercury

    Can anyone give me the correct torque settings for both the cylinder head water jacket bolts and the exhaust plate cover bolts. I am getting conflicting advice from the 2 manuals that I have down loaded. Also what is the best grease to put on the bottom crankshaft bearing before I replace it. Thanks
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    No telltale flow 1978 80hp Mercury

    I have just replaced the water pump body and impeller on my 1978 80hp Blueband Mercury outboard. I have no flow out of the tell-tale so I was wondering if it is ok to either blow air back up the tell-tale opening or poke something up their to see if it is blocked. Will this cause any damage or...
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    1978 80hp Mercury Power Trim Problems

    I have now bought 2 new solenoids and replaced all the wiring on the pump. I have separated the Purple, Blue and green wires and run them directly to the solenoid. I can now get the pump to run down by pushing the down button on the throttle handle and up by pushing the Trailer button on the...
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    1978 80hp Mercury Power Trim Problems

    Chris 1956, thanks for your reply. The plug does have 3 female connections but as you can see one is damaged / burnt. I will try to clean it up and then connect all 3 wires separately. Can I assume the horizontal connection is for the purple wire? I have also attached 2 pics of what I believe...
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    1978 80hp Mercury Control Box

    Does anybody have any experience or an exploded drawing of this control box? I would like to pull it apart as I think the upper button and the trailer button for the power trim aren't working. Thanks Brett
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    1978 80hp Mercury Power Trim Problems

    These are pics of the pump and control box
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    1978 80hp Mercury Power Trim Problems

    G'day everyone, we have a project boat going at the moment and are having a few problems with the power trim and tilt which was disconnected when we got it. The motor operates when we push the down button on the control box but nothing happens when we push either the up button or the trailer...
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