I have a 1963 Johnson model number rkl25d 40hp, what plugs should be in it? What should the gap be?:
M mjeff278 Cadet Joined Aug 27, 2007 Messages 14 Aug 28, 2007 #1 I have a 1963 Johnson model number rkl25d 40hp, what plugs should be in it? What should the gap be?:
Joe Reeves Supreme Mariner Joined Feb 24, 2002 Messages 13,262 Aug 28, 2007 #2 Re: what plugs????????????? Champion J4C or J6C, gapped at .030 . The J6C is slightly hotter and may provide improved performance. Try both.
Re: what plugs????????????? Champion J4C or J6C, gapped at .030 . The J6C is slightly hotter and may provide improved performance. Try both.
Silvertip Supreme Mariner Joined Sep 22, 2003 Messages 28,771 Aug 28, 2007 #3 Re: what plugs????????????? Check the reference book where you will buy the plugs. That book also tells you the plug gap. You should come up with Champion J4C gapped at .030.
Re: what plugs????????????? Check the reference book where you will buy the plugs. That book also tells you the plug gap. You should come up with Champion J4C gapped at .030.
M mjeff278 Cadet Joined Aug 27, 2007 Messages 14 Aug 28, 2007 #4 Re: what plugs????????????? thanks guys
