1989 Johnson/Evinrude Outboards 88 thru 110 150 thru 175 models Service RepaIr Manual P/N 507757, Page 108Get this manual
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Ignition Component Replacement Ignition Coil Removal
2 Apply light coating of ripe-Guad grease to the ribbed portion of the spark plug ceramics and to the openings of each of the spark plug lead