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40S spark plugs

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gary

01-16-2003 12:46:57




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i have a 40s i recently bought and it had two different plugs in it and i know they are both probably the wrong ones, in my service book it just says 14mm plugs. does anyone know of a good plug they use with brand name and number??? thanks




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Niner

01-19-2003 15:51:17




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 Re: 40S spark plugs in reply to gary, 01-16-2003 12:46:57  
Gary, Follow this link for a cross ref. for these plugs.

http://www.ytmag.com//jd/messages/92418.html



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Clooney

01-16-2003 13:25:11




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 Re: 40S spark plugs in reply to gary, 01-16-2003 12:46:57  
Gary, the book calls for Champion H-10 but I have had better luck using Champion H-12. If are going to use the called for H-10 at least use H-10C as the copper is much better at not fuel fouling.
~Set the gap at .025" those Dubuque's don't like a big plug gap with the stock 6 volt ignition....



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Wayne in Tn.

01-16-2003 13:36:52




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 Re: Re: 40S spark plugs in reply to Clooney, 01-16-2003 13:25:11  
Gary, if you are just going to be puttering around and not doing any hard work for extended periods of time, then you can expect plug fouling with the 40. Good idea is to keep a set of new ones extra all time. I know everyone has thier favorite brand, but I have had better luck with the Autolite # 216 plugs. Also when a problem arises, on the Dubuques, that is the first thing to do: Install a new set of plugs, gapped at .025

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