1994 Johnson/Evinrude Outboards 40 thru 55 Service Repair Manual P/N 500608, Page 113Get this manual

1994 Johnson/Evinrude Outboards 40 thru 55 Service Repair Manual P/N 500608, Page 113

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Spark Plug Information The spark plugs should removed and examinedspark plug should replaced if the electrodes badly worn, if it has cracked insulator, is badly fouledBefore installing the spark plug