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#78781
Buccaneer
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    US Member
    quote FrankR:

    Um—bear with me, I’ll have to see if I can find that spec. I know that 25-30-35-40hp motors have various specs.

    EDIT: The Johnson service manual goes into great detail as to how it works, but doesn’t say at what vacuum. It only says that it should operate if running 2000 RPM in neutral and suddenly closing the throttle. Yeah, and if it doesn’t operate, you got a runaway motor on your hands. Cool.

    Frank, I presume that if I could indeed test the vacuum switch via "mouth"
    as Billy suggest, then the diaphragm most likely would be good yet,
    and perhaps no further testing would be required at a specific vacuum.
    It would be nice to know what the official procedure was suggest by OMC.
    Last time I tried vacuum testing something via mouth I got dizzy, lol.

    Prepare to be boarded!