1995 Johnson Evinrude "EO" 60 LV 90, 115, 150, 150C, 175 Service Repair Manual, P/N 503151, Page 98Get this manual
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Spark Plug Information The spark plugs should be removed and examinedA spark plug should be replaced if the electrodes are badly worn, if it has cracked insulator, or is badly fouled Before installing