1981 Johnson/Evinrude 4HP Outboards Service Repair Manual P/N 392069, Page 28Get this manual

1981 Johnson/Evinrude 4HP Outboards Service Repair Manual P/N 392069, Page 28

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Advance speed control until mark centered under rollerSee Figue 3-18 is
this pOi.nt the throttle should just begin to Sometlmes thoughit is difficult to tell when the carbuetor's throttle shaft