I change them at the beginning of the season and always carry a spare onboard. It really comes down to fuel quality, better fuel=less headaches. I currently use a Racor filtration system which in my opinion is better than the yamaha system.
Good luck
Chris Moffatt
Miss Dorothy II
2007 2520XLD...
Good luck with the new boat. I bought a used 2520XLD in Virginia (loaded w/only 100hrs on the engines). Took a while to get used to how they handle. Every time I fish this boat, I like it more and more. If you are having it custom built make sure you are aware of the placement of rod...