What spark plug do I need for a 1986 40 hp evinrude
T TEConrad Recruit Joined Apr 12, 2009 Messages 4 Apr 14, 2009 #1 What spark plug do I need for a 1986 40 hp evinrude
Vic.S Rear Admiral Joined May 4, 2004 Messages 4,721 Apr 14, 2009 #2 Re: spark plug From the BRP parts list I get L77JC4 or the suppressed version QL77JC4 or QL16V which is a surface gap plug From Contiuouswave.com I get L78V surfaced gapped or QL77JC4. gapped plugs 0.030"
Re: spark plug From the BRP parts list I get L77JC4 or the suppressed version QL77JC4 or QL16V which is a surface gap plug From Contiuouswave.com I get L78V surfaced gapped or QL77JC4. gapped plugs 0.030"
E EN2 Chief Petty Officer Joined Nov 19, 2007 Messages 404 Apr 14, 2009 #3 Re: spark plug My OMC manual says .040.
Vic.S Rear Admiral Joined May 4, 2004 Messages 4,721 Apr 15, 2009 #4 Re: spark plug Yes you will find 0.040" in older manuals but current recommendations are for 0.030" in practically all cases. Same has applied to my own engine. Any problems with fouling open it back up again.
Re: spark plug Yes you will find 0.040" in older manuals but current recommendations are for 0.030" in practically all cases. Same has applied to my own engine. Any problems with fouling open it back up again.
T TEConrad Recruit Joined Apr 12, 2009 Messages 4 Apr 15, 2009 #5 Re: spark plug Thanks for the information
