Re: OMC 25hp 32 C.I. Flywheel compatibility

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July 26, 2018 at 1:25 am #80131
Don
Participant

    US Member

    Well, I know that flywheels did change over the years…Excluding the models using the points, I kinda feel as you do, that the ignition function would be the same. The changes were like you say, to accommodate different starters/recoils, etc.
    Did you try putting the newer flywheel back on to see if the problem reappeared? If so, I would compare WOT timing between the two flywheels, then I would do cranking output tests on the sensor and charge coil using the peak reading voltmeter, then compare these readings to the newer flywheel.