Mercury KD4

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    Boonie

    Canada Member - 1 Year
    Replies: 38
    Topics: 2
    #227169

    Thanks , I’ll check it out.

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    Boonie

    Canada Member - 1 Year
    Replies: 38
    Topics: 2
    #227180

    So I cleaned the inside of my KD4 gas tank with 1500 bb,s and varsol . Shake and bake method. Works great. Taking the bb’s out and this came out of the tank as well. Any idea what it is?

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    Boonie

    Canada Member - 1 Year
    Replies: 38
    Topics: 2
    #227183

    It says Zenith which is probably a carb part but for what?

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    Boonie

    Canada Member - 1 Year
    Replies: 38
    Topics: 2
    #227184

    Why would someone do this. Welded together. Should I cut apart or leave?

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    green-thumbs

    US Member - 1 Year
    Replies: 418
    Topics: 38
    #227205

    All of the aluminum clamp assemblies have the two halves welded together except some early pre ww2 versions.
    It is not uncommon to see repair welds on clamp brackets that were damage post factory.

    The brass part you found in gas tank is part of the fuel filter that
    broke off the shut off valve or fitting. The filter is usually broken off,
    clogged or corroded or all of the above.
    Repair MAY be possible. See what others say.

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    Boonie

    Canada Member - 1 Year
    Replies: 38
    Topics: 2
    #227206

    Just seems strange to weld something when there is a screw/bolt as well.
    I thought that might be a filter of some sorts but didn’t see how it would connect?

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    green-thumbs

    US Member - 1 Year
    Replies: 418
    Topics: 38
    #227252

    Kiekhaefer, both man and company did things their way. Labor and other costs figure into cost to manufacture a product, The basic design of the 5.5 cu in single and 11 cu in twin K Model Mercury (and Wizards) remained the same while MANY improvements in detail were made. What was right stayed, what was wrong got changed.

    The clamp haves are a right and a left, which could lead to confusion
    on the assembly line amd replacement parts. With the halves welded into a single unit the problem goes away.

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    Boonie

    Canada Member - 1 Year
    Replies: 38
    Topics: 2
    #227257

    Wow. Love hearing about the old stuff.
    Thanks guys

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    mercuryspecialist


    Replies: 80
    Topics: 9
    #227283

    I would advise you to check the fitment, but the “01” picture appears to me to show the fuel tank fuel filter element still attached to it’s retaining nut, where the nut presses into the fuel shut-off valve. As the pictures are quite small for me to see, “02” might be where a portion of the fuel filter element was broken-off. We do have new old stock fuel filter elements, but the nut would have to be removed and reinstalled into the fuel shut-off valve, or another (carefully) created from a larger brass or stainless “square nut”. (stove bolt nut). I would apply some Teflon pipe sealant to the fuel shut-off valve threads before installing to the fuel tank to better ensure against an external fuel leak..

    Regards,
    Joe

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    Boonie

    Canada Member - 1 Year
    Replies: 38
    Topics: 2
    #227294

    Nice tight friction fit.

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    dave-bernard

    US Member - 2 Years
    Replies: 1281
    Topics: 17
    #227303

    those filters have a thread on the bottom that screw into a bridge in the fitting. very thin . it looks like the threads have broken off in the first pics.

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    Boonie

    Canada Member - 1 Year
    Replies: 38
    Topics: 2
    #227364

    Need a part # for a water pump impeller for this Kd4?

    Buccaneer
    Buccaneer

    US Member - 1 Year
    Replies: 4268
    Topics: 758
    #227382

    This is what I have in my notes…….

    18-3072 Sierra impeller for Mercury KD4

    Overall Diameter : 48mm 1.89
    Shaft Size Diameter : 11mm .433
    Depth :13.5mm .531
    Blade :6

    Prepare to be boarded!

    Buccaneer
    Buccaneer

    US Member - 1 Year
    Replies: 4268
    Topics: 758
    #227383

    In looking at my photos on my KD4, it appears I used parts from two different KD’s, one had a wobbler pump,
    but I ended up using the Sierra impeller somehow!
    Also looks like I make my own impeller drive bushing last winter. Don’t believe I ever got around to running
    it to see if it worked.
    Other’s have done the retrofit “different than I, so hopefully someone will say how.

    DSCN8599

    Prepare to be boarded!

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    kirkp

    US Member - 1 Year
    Replies: 171
    Topics: 10
    #227386

    The part number for the vane impeller is M-50-137. Couldn’t find where you have said what your serial number is. According to the info I have, depending on the number you could have a oscillator style impeller. On the first page of your post fifty2One posted pictures with all the part numbers you’ll need.

    Kirk

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