Seaking 5hp impeller replacement.

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    AnotherSteve

    US Member - 1 Year
    Replies: 16
    Topics: 2
    #198466

    Hello,
    I’m the proud owner of a Seaking 5hp. which I believe to be a 1964 or 65 vintage.
    Model GG18801A
    SN 36X882526

    This mighty motor doesn’t seem to be pumping any water so since the intake port looks
    clear I figured I’d change the impeller. I believe on this motor the impeller is on the drive shaft
    as opposed to being behind the prop. I’ve read that the power head must be removed to do this as
    the drive shaft needs to be disconnected there so the lower unit can be dropped.

    Is this so?

    Thanks,
    Another Steve

    Ah to be young and foolish again instead of old and still foolish.

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    dave-bernard

    US Member - 2 Years
    Replies: 1130
    Topics: 14
    #198470

    easy way to tell if it is on the prop shaft is if it is a shift motor it must be on the driveshaft….

    Mumbles
    Mumbles

    Canada Member - 2 Years
    Replies: 4510
    Topics: 432
    #198478

    The powerhead needs to be removed so the shift linkage can be undone. The driveshaft will slide right out of the crankshaft .

    frankr
    frankr


    Replies: 5147
    Topics: 48
    #198479

    Your motor is a 1963

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    green-thumbs

    US Member - 1 Year
    Replies: 402
    Topics: 38
    #198480

    Per reference source,,,GG18801A was 1963 Gale Division of OMC
    5 hp Gale Model 5D22B. Impeller is in leg/tower
    The more difficult it is to access impeller, the less likely that it has been
    checked or replaced. You are wise to put it at top of to do list.
    From what I can tell by looking at after market manual your Sea King
    is serviced about the same as other OMC 5hp of early 1960s.
    Louis

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    AnotherSteve

    US Member - 1 Year
    Replies: 16
    Topics: 2
    #198483

    frankr : Thanks. I was close.

    dave-benard: It is indeed a shiftable model.

    Mumbles: When doing research on pulling the power head I found reference to “seven screws”
    that would need to be removed. If the screw heads are located on the outside of the motor
    I’ve only been able to find four of them. Is there a handy dandy diagram that shows these screws?

    Thanks

    Ah to be young and foolish again instead of old and still foolish.

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    AnotherSteve

    US Member - 1 Year
    Replies: 16
    Topics: 2
    #198484

    Thanks green-thumbs.
    Other than the impeller and filling the gearbox it’s ready to go.

    Ah to be young and foolish again instead of old and still foolish.

    Mumbles
    Mumbles

    Canada Member - 2 Years
    Replies: 4510
    Topics: 432
    #198493

    Here’s the layout of the seven screws and the two 3/8″ brass nuts holding the shift rod on. There will be a small lock washer between the nuts.

    IMGP0411

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    AnotherSteve

    US Member - 1 Year
    Replies: 16
    Topics: 2
    #198500

    Thanks Mumbles!

    Ah to be young and foolish again instead of old and still foolish.

    Avatar
    outbdnut2

    US Member - 2 Years
    Replies: 1254
    Topics: 65
    #198505

    Being a 1963, did the Sea King 5s have a thermostat like most of the Johnson/Evinrudes of that era?? If so, it won’t pump ,much for water until it warms up, and even then you may only see a spray discharging. Look and see if there is a thermostat housed on the cylinder head’
    Dave

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    AnotherSteve

    US Member - 1 Year
    Replies: 16
    Topics: 2
    #198507

    And a tip of the hat to you outbdnut2.

    When I pull it apart I’ll check for a thermostat.

    Ah to be young and foolish again instead of old and still foolish.

    frankr
    frankr


    Replies: 5147
    Topics: 48
    #198510

    NO thermostat on the Gale. Be sure to replace the cork gasket in mumbles’ picture. And the o-ring. Those parts keep water out of the crankcase. 303355 gasket and 303347 o-ring.

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    AnotherSteve

    US Member - 1 Year
    Replies: 16
    Topics: 2
    #198513

    Here is a newbie question.
    Where do I obtain the parts frankr?

    Ah to be young and foolish again instead of old and still foolish.

    frankr
    frankr


    Replies: 5147
    Topics: 48
    #198519

    Here is a newbie question.
    Where do I obtain the parts frankr?

    Any Evinrude dealer, or several on-line, or several aomci members. That stuff is very common and used for years

    1.-Wards-Sea-King-Trim-Group

    5-1-Magneto

    5-4-Carburetor

    5-5-Carburetor-Parts-List

    • This reply was modified 3 months, 2 weeks ago by frankrfrankr.
    • This reply was modified 3 months, 2 weeks ago by frankrfrankr.
    Attachments:
    frankr
    frankr


    Replies: 5147
    Topics: 48
    #198526

    More

    5-6-Powerhead

    5-7-Powerhead-Parts-List

    5-8-Exhaust-Housing-and-Bracket

    5-9-Exhaust-Housing-and-Bracket-Parts-List

    Attachments:
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