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    Merc 75 HP idle adj. which carb?

    :confused: I have a 1994 Merc 75 hp that has a rough idle . Runs good at high speed. I want to adjust the idle mixture screws. My Merc Service Manual explains the procedure. My question is does it matter which carb I start with. Thanks for any replys.
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    Merc 75 HP running rough at idle

    Greetings Guy's. I have a 1994 Merc 75 ELPTO which I bought last year. I took the plugs out and the piston heads appeared to be covered with a lot of carbon. I sprayed Power Tune on each and let sit for 3 days. Took the boat out over the weekend. Motor starts up okay,runs great at high speed...
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    Wrong Motor?

    I have a 1991 Maxum 1700XR. This boat is rated for up to a 75hp motor. It currently has a 70hp Force, which is giving me some problems. I have , from a previous boat , a 1978 Merc 500 4 cylinder. This motor runs great and has very low hours. My question. If I put the Merc on and attempt to pull...
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    Need help with prop selection

    Gentlemen I need your help with a prop question.Yesterday I took the wife for our first outing since purchasing a 1991 Maxum 1700XR with a 1991 Force 70 HP model 708A91B.The motor idles and runs good. Fresh gas. The best I could do was 4500 RPM and 30MPH on the boat speedometer at WOT. I don't...
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    Compression Question

    Guy's ,I need a few suggestions. I have a 1991 Force 70 HP Ser.#016768 Model 708A91B. My Force Service Manual states #1cyl-125-145 PSI. #2 & #3 cyl-135-150 PSI. I currently have #1-120 PSI, #2-120 PSI, #3-125 PSI. Should I begin looking for a new engine.
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    thread sealant question

    Greetings All. I would like to install a fuel filter/water separator in my 1991 Maxum 1700 XR which I purchased late last year.I've read many posts about what thread sealant other boaters are using.A lot of guys seem to prefer Permatex Aviation form-a-gasket No.3 sealant.However,when I read...
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