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    1993 Mercruiser 350 Ski Magnum carbed oil type

    Gee, what kind of oil is specified for your motor? I will bet it is FC-W oil. FC-W oil is specifically designed for sterndrive and 4 cycle OB motors. Why not use that?
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    Bildge pump removal

    A lot of those pumps have screens under the pump body. Under the screens, which are not fastened, are 2 - 4 screws.
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    Mercury 80 HP outboard

    The correct way is to set the carbs to 1-1/2 open, and run it on the water. Make sure the mixture is exactly 50::1 and tune the carb idle mixture to run as best as possible while allowing smooth acceleration.
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    Mercury 80 HP outboard

    I will assume that is a Merc from the late 70s or early 80s. They really liked a precise 50::1 gas::oil mix. When tuned properly, they will idle OK on that. However, it does not take much in tuning or fuel mix to make a lousy idle. My advice is to mix a fresh 50::1 fuel source and run it on...
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    1992 Mariner 200 EFI, lost power

    Check your fuel for water or other contaminate. drain the carbs and see what is there. Water is likely. If that doesn't get it, check spark on all 6.
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    Mercury 80 HP outboard

    No, the difference is backpressure on the exhaust. In the driveway there is no backpressure. In the water there is some backpressure. What is your idle speed? Have you made any changes or repairs to timing or carbs?
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    Mercury 80 hp portable fuel tank

    Doubtful. 2 cycle oil mixes very easily with gasoline, especially in portable fuel tanks.
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    Spark plugs for a Merc outboard

    I once compared the BUHW and BUHW-2 spark plugs. The BUHW-2 had a slightly thicker ring electrode. That seemed to be the only difference. I do not think it makes a large difference, because my '73 850 and my '77 1500 shared ign systems, pistons, carbs and a whole lot of other parts, yet the...
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    Slip/moored boat what do you do with your trailer?

    Gee, it depends on the HOA. Lean it upright against a fence, comes to mind.
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    Spark plug location on coils

    Usually the top coil goes to top cylinder... Maxrules likely has a wiring diagram for your motor. Compare the colors of the wires to the coils with the diagram and make sure they match. Also, compare the wire colors on the switchbox to the diagram to make sure no one got creative.
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    97 Merc 200 carb, slow to plane out and no top end

    Reeds were stainless steel? If timing is good, and spark on all cylinders, carbs are next possibility.
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    Will a 2001 elpt 90hp lower work on a 2005 90hp elpto?

    SEI Engineering make replacement gearcases for OBs. Their application data may give you the answer.
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    Muriatic acid on stripped outdrive. Is it safe?

    Acetone is fine to clean the surface. Paint thinner is OK as well. use a self-etching primer. Rattle can gloss black is fine.
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    Muriatic acid on stripped outdrive. Is it safe?

    Muriatic acid is strong stuff. Likely too strong at full strength for aluminum. Get some nice course, medium and fine waterproof sandpaper and a bucket of water. Sand her down, hose it off, after dry, spray with self-etch primer, and then topcoat. Sanding is not that hard, even by hand.
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    Remove Driveshaft Housing without Lifting Powerhead?

    It would be nice to know what motor. Generally, the upper and lower motor mounts hold the midsection to the transom clamp. The gearcase and powerhead bolt to the midsection. If you unbolt the gearcase, the driveshaft will come with it.
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    97 Merc 200 carb, slow to plane out and no top end

    V6 Mercs do not have the 2+2 feature. Every cylinder on your motor runs continuously. Reed valves almost never wear out. I doubt yours's needed to be replaced. You might check timing at idle pickup and max spark advance. Maybe you messed something up when changing the reed valves. Do all...
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    1998 115 (E115SLECM) VRO leaking fuel

    You can get a brand new OEM OMS pump for $500, or a rebuild kit for $200, which has a 50% chance of fixing your issue. You pays your $ and takes your chances.
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    Fuel for older Evinrude/ Johnson

    Your first tank of e10 will tend to loosen some old crap in the fuel tanks. Be prepared to change the fuel filter after the first tank. Watch the rubber fuel lines for failure. Most fuel lines have already been changed to alcohol-resistant by now, but keep an eye on 'em. J/E motors after...
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    Epoxy resin to seal new decking

    Polyester resin and some medium weight cloth will seal it well enough. No need for epoxy. Amazon has both resin and cloth for a decent price.
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    1996 venom 200 double problems tachometer/reverse

    I have a 1998 Johnny 150HPV6. I have had some issues where the shift rod gets hung up due to corrosion, and will not go down into reverse. The fix is to drop the gearcase and figure out what is jamming the shift rod. You might like to see if this is your issue. Remove the cowling. Spin the...
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