1976 Evinrude 40HP outboards Service Repair Manual P/N 406447, Page 36Get this manual

1976 Evinrude 40HP outboards Service Repair Manual P/N 406447, Page 36

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Before installing the plug, sure the plug seat in the cylinder head is clean and{ obstructionsSee Figure 4-19 Screw tl1e plug in hand, then tighten to the specified 17-12 to 20-12 foot-poundsIf thread