What's good compression on a 40hp Mercury outboard
H H20man1 Recruit Joined Jul 19, 2011 Messages 3 Jul 27, 2011 #1 What's good compression on a 40hp Mercury outboard
Barnacle_Bill Admiral Joined Feb 8, 2004 Messages 6,469 Jul 27, 2011 #2 Re: Compression Its more important that they all be within 10lbs of each other.