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    Temperature:

    I have a 2005 Mercury 150 Saltwater engine. I recently moved the boat from salt water to fresh lake water. I have alway noticed that my water temperature ran on the high side...and no change moving to fresh water. It idles at about 175 degrees and then while underway (less than five mph) the...
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    "Contains 10% Ethanol".

    I found this on another site "Just curious if anyone has heard anything about the ethanol that is now being used in the gas supply affecting outboard engines"? No real responses. I looked thru this site and did not find any comments either…have there been?<br /><br />I am particularly...
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    Starting problem:

    Most likely my problem...I recently had my motor serviced (oil change etc.) in prepration for spring operations. Today I washed it and tried to crank it up. After several attempts I discoverd that during servicing the "dead man switch" was off. After reinstating I tried again...still no start. I...
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    Service Manual:

    I am trying to purchase a Service Manual for a Mercury 2004 150 SaltWater (normal carberator type). The Mercury website "seems" not to carry or show that engine (probably my lack of knowledge on finding it). In any case I would like to add that maunal to my learning curve.Thanks.
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    Fuel Shut Valve

    Question… Fuel Shut Off Valve:<br /><br />Engine…Mercury 150 Saltwater / Carbureted <br /><br />I have heard of two schools of thought on engine shut down at the end of the day. This is on the Texas Gulf Coast where summer heat and humidity rule.<br /><br />One school suggests (requires...
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    Muffs vs Engine block connection flushing:

    I am uncertain as to which is better...using the muffs to flush my outboard (used mostly in salt water) or to use the hose connection on the engine block?
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    Water temperature vs. water pressure gauges

    I am a new boat owner and also thinking of adding a water pressure gauge. I have a Mercury 150 Saltwater with a "water temperature” gauge. The range is 0 to 220 degrees, initially didn’t notice it registering beyond about 175, then I noticed it was up to almost 200. I contacted my local marina...
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