Reply To: Restoration of 1964 3hp Johnson JH 19A

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October 7, 2021 at 11:04 pm #247883
DAN ANDERSON
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    Being that your model has a fixed high speed orifice it is more likely to effect wide open throttle. If the screen is restrictive (holes a little small or too few) then the motor will run rich. Like wise if not restrictive enough would be lean. These little motors are pretty touchy.. Wouldn’t be a problem with an adjustable needle. Hope that helps!

    Dan in TN