Waterwitch 571-20

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  • cshort


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    #274354

    What compression should my waterwitch have and how do i set the timing


    The Boat House


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    Topics: 111
    #274363



    The speed of the motor is controlled by advancing or
    retarding the timing so there is no timing adjustment.
    The timing is changing as you twist the speed lever.
    New compression was likely 75lbs. I don’t have
    anything giving that specification but that was
    common for motors at that time because of the
    low octane fuel.
    I have a 1936 – MB-20 Twin, and a 1937 – 571-20 Twin.
    This is the compression readings for them.
    I suspect your readings will be similar if it was run much
    as the oil back then wasn’t what it is today.
    Do you have spark?
    Coils are often bad in these and hard to come by.
    Tubs


    The Boat House


    Replies: 4549
    Topics: 111
    #274364

    .

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