1995 Johnson/Evinrude Outboards 9.9, 15 four-stroke Service Repair Manual P/N 503140, Page 73Get this manual

1995 Johnson/Evinrude Outboards 9.9, 15 four-stroke Service Repair Manual P/N 503140, Page 73

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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