1981 Johnson/Evinrude 4HP Outboards Service Repair Manual P/N 392069, Page 15Get this manual

1981 Johnson/Evinrude 4HP Outboards Service Repair Manual P/N 392069, Page 15

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TUNEUP PROCEDURE When owner brings motor to you for tune-up, for some minor operating malfunction, the following procedure should used as guide to determine the cause of the malfunctionWrite down the