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    Overheated?? Probably!! what to check??

    I knew I'd be back. Bought a used boat (didn't pay much) It has a Mercruiser w/GM 4 cyl. Boat is an '83, some confusion about motor, drive says 3.0 and valve cover says 120 don't think that is a valid combo. Engine serial is 6809214. When bought boat seller said it needed a pump and had a new...
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    Help with which manual to buy

    Sorry but searches have not yet given me the true information I need. Have an 84 model boat w/ a 120 hp Mercruiser 4 cyl. Though I am confused that the outdrive shows it to be a 3.0L and I thought that a 120 was a 2.5L. Regardless, it appears that the Mercuiser manuals are numbered 1,2,6, etc...
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    89 OMC Cobra 120hp weaknesses???

    Looking at a used boat with the above power system. What weaknesses are there in the OMC/Cobra system that I should be aware of and be looking for? I am an accomplished general mechanic but know nothing "specific" about the OMC/Cobra units. Also. it seems that I remember OMC touting the fact...
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    Mercruiser 488??

    Looking at a used boat on craigslist. Said to have a mercruiser 488. Looking at the accompanying pics it is a black motor and it does say 488 on the valve cover. The outdrive is white/gray and is too obscure to really get a look at the shape. Does anyone know what this is? Says the boat is an...
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