Which plugs for an '81 25HP Evinrude?

E

estero

Recruit
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Sep 3, 2006
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I just bought a used Evinrude, model number E25RCSA which appears to be in very good condition. It has NGK plugs although my stepson keeps telling me it should have Champions. It seem to run okay, but I found a sticker on a wire which suggests Champions L77J4 or AC M40FFX. I hope somebody can let me know if I should replace the plugs with Champions or if it's okay to leave the NGKs.
 
O

ob

Admiral
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Aug 16, 2002
Messages
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Re: Which plugs for an '81 25HP Evinrude?

The engine is a 1980 model.Anyway ,the recommended plugs are Champion QL77JC4 gapped at .030" or for sustained high speed operation L78V surface gap plugs.Champion QL82C is listed as an alternate plug also gapped at .030"
 
E

estero

Recruit
Joined
Sep 3, 2006
Messages
2
Re: Which plugs for an '81 25HP Evinrude?

Thank-you very much, ob! We just picked up some QL77JC4 and will gap and put them in now.
 
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