I jus got a yamaha 40hp motor. It has 110-115 psi. on both cylinders. Is that good?
B bill j Seaman Apprentice Joined Nov 27, 2007 Messages 47 Apr 5, 2010 #1 I jus got a yamaha 40hp motor. It has 110-115 psi. on both cylinders. Is that good?
9 99yam40 Fleet Admiral Joined Sep 7, 2008 Messages 9,116 Apr 6, 2010 #2 Re: 1991 yamaha 40 hp compression spec? I would have to say it looks good to me. Less that 10% difference between the 2
Re: 1991 yamaha 40 hp compression spec? I would have to say it looks good to me. Less that 10% difference between the 2
