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    1993 mariner od160931

    Gee, I sent you the manual link. Why not match up your motor with the info in the manual? The motor does not know it is grey and a Mariner.
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    1993 mariner od160931

    Gee, there is this manual in that group I sent. May not be the exact year, but likely close enough https://www.manualslib.com/manual/814763/Mercury-6.html
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    Merc 75 4 cylinders, 2 carbs

    Replace impeller, wearplate and the two gaskets that sandwich the wearplate. Inspect the upper pump body for scratches in the stainless steel cup. Replace upper pump if you find that. Inspect the pump base for melting or other defect, and replace it if that is found. Often the pump base...
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    Looking for idea's to hide window screws

    You can buy self stick foam weatherstripping. Some of it is 3/8" thick, which could cover the screws.
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    1977 Merc 500 water in oil

    You need to see where the gearcase is leaking. In my experience, most leaks on a motor of that vintage is the driveshaft seal. So if you can, use the gear lube pump tube to pressurize the gearcase. with a few PSI, and see where it leaks. Replacing the driveshaft seal is best by buying a new...
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    Fuel water Separators ,Why not universal fit?????

    Mercury OB, MerCruiser and Yamaha (all small thread) interchange. OMC OBs use the larger thread. Since I have one Merc OB and one Johnny OB, I installed a Merc one on my Johnny OB, so I only needed to buy one kind of filter for both kinds of motors. To add to your rant, Mercury OB, MerCruiser...
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    Mercury Gen 1 cables to OMC possible?

    You should check the travel direction on the MerCruiser throttle cables, as they may be different than the Merc OBs. I cannot remember how my MerCruiser worked, after all these years. Travel on the shift cable is real important, and I think Merc built in more travel than the OMC, do to the...
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    Trim motor

    Actually it depends on whether the PTT motor is a 2 wire or 3 wire motor. Three wire motors use solenoids to provide power to either the green or blue wires. A center-winding ground completes either the up or down circuit. The non-energized solenoid is open. 2 wire PTT motors use relays...
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    1993 mariner od160931

    What HP motor do you have?
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    Mercury Gen 1 cables to OMC possible?

    Merc OBs and OMC move their throttle cables differently. OMCs usually push the throttle open, while Merc OBs push the throttle closed. Some controls have places to attach the cables for both functions. They are therefore universal. if you do not have a universal control, I fear adapting...
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    1993 mariner od160931

    This site may have your motor. Remember the difference between Mercury OBs and Mariner OBs is paint color. https://www.manualslib.com/brand/mercury/outboard-motor.html
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    How is HP selected on old Elgin Outboards?

    Wow, parental controls way back then. Good stuff.
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    Quick Question for Merc Experts

    Generally too lean a mixture will cause the motor to bog when trying to accelerate. If she doesn't bog, and idles reasonably well, the idle mixture is fine. Mercs of your type will idle a bit faster when the idle mixture is too lean, but not a lot faster, mostly just smoother. They usually...
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    How is HP selected on old Elgin Outboards?

    OK thanks, and the reason to restrict throttle opening was???
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    Quick Question for Merc Experts

    Carb idle mixture screws richen the mixture when turned open (CCW).
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    Fuel water separator and fuel filter on 3L

    The cheaper aftermarket water separator can-type are less than $10. OE are more in the $25 range.
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    How is HP selected on old Elgin Outboards?

    I saw a utube video where a guy ran a 1957 Elgin 12HP, in 5HP, 7.5HP and 12HP "modes". The selection of power was via a keyswitch on the motor. How is this accomplished? RPM limiter? Cylinder deactivation?
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    1976 mercury 40hp flywheel question

    Make sure the ring of small bolts around the large flywheel bolt are tight. Sometimes they need Loctite to stay that way.
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    Fuel water separator and fuel filter on 3L

    If you have a lot of water in the fuel tank and the boat is trailered, you can usually pull the fuel gauge sender and stick one of those "shake-shake" Siphons in it. Put a piece of 1/2" copper on the free end of the siphon hose and stick it thru the garboard drain hole. Now use a funnel and...
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    Add telltale pee hole to 1965 Johnson 75 HP

    You might paint the trailer, as it is pretty rotted.......The hull looks real nice.
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