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    Force Motor Running Rough at Times

    Here comes another novice question from a "ragbagger" turned "stinkpotter." :D My 1998 Force 90 idles smoothly, runs the same at low and WOT speeds, but it is fairly rough at "medium," pre-planing speeds. Is this a common thing or do I need to do something more to this fine motor...
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    Idle Speed

    My reference library is still limited, so I have not been able to find out the idle speed for my Force 90. Would anyone happen to know? Would appreciate your help once again. :D
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    Spark Plug ID's

    This may be an easy question for some of you out there, but I would like to find out how much difference there is between CHAMPION L76V and L78V and also the corresponding NGK BUHW and BUHW-2. Would appreciate your response. :) (By the way, I found handy plug cross-reference tables at...
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    Decarbing Gas Additive

    Right now I have good compression in my Force 90, so I am just considering the possibility of using a gas additive for preventing carbon build up. What specific brands would you recommend and where could I purchase them? (Of course, there are those who say that if you use good gas and good oil...
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    Decarbing Gas Additive

    Right now I have good compression in my Force 90, so I am just considering the possibility of using a gas additive for preventing carbon build up. What specific brands would you recommend and where could I purchase them? (Of course, there are those who say that if you use good gas and good oil...
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    Starting Instructions -- 90HP

    Because I have not been able to get my hands on a 1998 Bayliner or Force owners manual -- as apposed to the aftermarket repair manuals -- I need help with a fairly simple subject: STARTING IT. When it is warm, no problem, one turn of the key, and she purrs. But WHAT ARE THE INSTRUCTIONS WHEN...
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    Testing Temperature Sensor

    Thanks to SELDONT's help, :) I have found the temperature sensor and have tested the wiring harness and the horn -- and it works. My next project is to make sure that the sensor itself is operational. Other then taking it down to my friendly ($$$ :rolleyes: ) Mercury dealer, do you have...
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    1998 Force 90HP Overheat Alarm

    I have just purchased the boat and motor and it runs well, but I would like to know more about the water temperature overheat alarm. The seller lost the original manual and a promised manual from Bayliner is still "in the mail". :( <br /><br />How does the warning sytem work? Does the...
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    Water temperature alarm buzzer

    I am looking for a simple high water temperature alarm buzzer for a 1998 Force 90HP OB. So far I have not been able to locate anything, except the typical guages/senders and a unit for an I/O. Your suggestion would be appreciated. :)
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    Alcohol in Gasoline

    I boat in SW Florida and usually buy premium gas at a Shell station in Venice. How can a person know if the gas contains alcohol (ethanol) or not (Shell states that it does NOT add methanol alcohol)? Would I be more safe buying gas at a fuel depot on the ICW, as far as alcohol content in...
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