90HP Yamaha won't plane my C-Dory 22

Wefings · Posted: Wed Jul 16, 2014 7:28 pm Post subject:

Yamaha does NOT recommend a 2 Micron Filter .Only a 10 .
Marc

Sunbeam · Posted: Wed Jul 16, 2014 7:35 pm Post subject:

I always like to read "how it all turned out." Thanks for posting.

I don't know that much about outboards, and even on inboards there are people who have differing theories on filtration, but one that I tend to believe, at least for inboard engines (because the person from whom I received the info is knowledgeable) is that if you only use a very small filter (such as 2 micron), then it's actually counterproductive because larger particles can "punch" their way through the filter. So if only one filter 10 micron may be better (of course if you have a 10 followed by a 2 then that's different).