1981 Johnson/Evinrude 4HP Outboards Service Repair Manual P/N 392069, Page 10Get this manual
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SPECIFICATIONS Models J4WCE4WC Weedless gearcase, standard length J4BRCstandard gearcase, standard length J4BRLCE4BRLC standard gearcase, long shaft hp (2.8 kW) at 4500 4000 to 5000
and stroke