Crank seal replacement

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  • James Calamon

    US Member - 1 Year
    Replies: 10
    Topics: 10

    1970 Evinrude 33 / 33053m Have engine out and doing everything but crank seals, but wanted to know how hard it would be t replace them and if there indicators for leaking crank seal. Bought motor sitting sideways in the back of a boat i bought, so I have no history. It shows some lower end work, but has original coils and ignition parts.


    US Member - 2 Years
    Replies: 555
    Topics: 48

    Put some oil on the crank at the seal and turn the motor over, assuming reed plate is in place.  If you see bubbles, replace the seal.



    Canada Member - 2 Years
    Replies: 5507
    Topics: 292

    Here’s how I test the top seal for leaks while spinning the motor over with a wrench and the plugs out.


    US Member - 2 Years
    Replies: 4246
    Topics: 42

    Your statement  …doing everything but crank seals…  confuses me.  Do you have the powerhead all apart?

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