1994 J150EXERV QL78Y or QL77JC4:confused: tom
G gotmeaboat Cadet Joined Feb 12, 2010 Messages 23 Jul 21, 2010 #1 1994 J150EXERV QL78Y or QL77JC4 tom
E ezeke Supreme Mariner Joined Sep 19, 2003 Messages 12,532 Jul 21, 2010 #2 Re: which spark plug? The motor started life with the QL77JC4. The Champion QL78YC is the currently recommended plug.
Re: which spark plug? The motor started life with the QL77JC4. The Champion QL78YC is the currently recommended plug.
