What Is The Correct Spark Plug And Gap For My 1989 Mercury 25 Hp?
L lawste1 Recruit Joined Aug 25, 2009 Messages 1 Aug 25, 2009 #1 What Is The Correct Spark Plug And Gap For My 1989 Mercury 25 Hp?
corm Lieutenant Junior Grade Joined May 12, 2000 Messages 1,241 Aug 25, 2009 #2 Re: 25 Hp Plug & Gap NGK BP8H-N-10 or Champion equivalent gap is .040
