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    Motor running or not

    Hello, I have a mercruiser 3.0 (2007) Do I need to have the motor running when I torque the six bolts when connecting the lower unit to the upper housing???
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    Impeller issues

    Hello, I have a 2007 Mariah with a merc. 3.0 over the weekend I replaced the impeller, and now the engine overheats on the muffs. What could I have done wrong????
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    Bell housing gasket

    I have a 2006 mercruiser 3.0 alpha 1 gen.11 I noticed the bell housing gasket on the sterndrive is split, will this let water into my sterdrive and is this a hard repair to fix. Also what gasket sealant do I need????
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    Help connect me

    Hello, I have a 2007 Mariah 18FS - I have installed four round led lights, the problem is how do I connect them to my acc. switch. My acc. switch has power to it now and has three terminals on the back please help
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    Help with fluid issues

    Hello, Could somebody help with these concerns, I have a 2006 mercruiser 3.0 1. Do I check the oil once the engine is hot and running?? 2. I use Gear Lube plus rom mercury - where is this oil used?? 3. What oil do I use for my trim/tilt 4. I have a oil resevoir mount on the side of my engine...
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    100 hour service

    Hello, I have a mercruiser 3.0 ( 2006 year) with the alpha one drive, I am getting close to my 100 hour service to be completed on my engine . What all should I be asking the service shop to do. Should I ask for anything extra to be done???????????
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    What switch do I need

    Heres what I would like to do I have installed LED lights in my boat I would like ti use only one switch to control all four lights. What I would like to do is turn the forward two light on or the aft two light and then all four light at the same time. What kind of switch can do what I need...
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    Mercruiser fuel/water seperator

    Hello , I have a Mariah FS18 mercruiser 3.0 Is their a certain location that the fuel/water seperator has to be mounted ???????
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    How do I install LED lights

    ]Hello, I would like to install a total of four LED lights in my boat (exterior lights ) two of the light will be placed towards the bow and the other two lights will be placed aft midship. 1. How do I connect all four lights together 2. Is their a way to turn the front and rear lights on...
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    Hull dearise for transducer install

    Hello, I have a Mariah FS18 with a mercruiser 3.0 I would like to install a thru hull transducer in my boat (the one that you have to drill a hole) The spec on my boat states the dearise is 18 degrees. 1. Is the entire hull 18 degrees or portions of the hull ??? 2. How and where do I measure...
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    REplacing a fuel pump filter

    Hello, I have a 2007 Mariah FS18 with the mercruiser 3.0 I would like to change the fuel pump filter, but how in the world can you get to it and when you do how is it replaced?????????
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    Carb filter

    Hello, I have a Mariah 18FS with the mercruiser 3.0 with a TKS carb on it (2006) I do I replace the carb filter. It looks like were the filter goes is a solid piece and does not look like it would unscrew. any ideas????????
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    Thru hull transduser

    Hello, I have a 2007 Mariah ES18 and would liketo mount a thru hull transducer. Do these transducers get drilled thru the botton of the hull or the transom????
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    Is this a good tune-up

    Hello, I would like to give my Mariah FS18 with the mercruiser 3.0 a good tune-up with the following items. Please advise if anything else is needed 1. Cap and Rotor 2. Plugs and plug wires ( what is best?? ) 3. Carb filter 4. Fuel filter Do I need anything else????????
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    Steering play HELP!!!!

    Hello, I have a Mariah 2007 FS18 with the mercruiser 3.0 in it. If I hold the steering wheel at 12 o clock I can move it to the 11 and 1 o clock positions before I have any movement in the steering is this normal and if not how can I fix this issue????
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    How to locate size

    Guys, I have an 2007 mercruiser 3.0, how can I find the prop size on my boat. It looks like the prop has been painted
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    Tune-up items needed

    Hello, I am very new to the boating scene. I have a 2007 Mariah FS18 and would like to give it a tune-up (idles rough).The engine is a mercruiser 3.0 2006 model year serial #1A005910. What all do I need to buy and where to buy these items, could one of you guys please provide a list of items...
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