Merc 120 XR 1996, Specs call for Champion L77JC4 which is an extended electrode plug, motor currently has L76V surface gap plugs which is recomended for 1995 and older. Any ideas which one is best, don't have any idea if piston will hjt electrode on LL77JC plug, Have had foweling problems with L76V's. Just want to be safe and not cause any damage.
Joe
Joe