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HK

wrote:
On Wed, 26 Mar 2008 08:17:41 -0700 (PDT), wrote:

What about the fact that you may well be voiding your warranty? What
about the fact that today's fuel systems work on precise pressures and
an extra filter may very well change that? What about the fact that
the computer my very well sense a problem with the fuel delivery and
not work correctly?

There are two fuel pumps between the line and the injectors. I doubt
an external filter will have any effect at all.

My last two outboards came pre-rigged with external fuel filters bearing
the engine manufacturer's brand name.

Page 46 of the latest Yamaha outboard catalog says, in part:

"Our 10-micron high performance fuel/water separating filter is
specifically designed for use with the on-engine filters in all Yamaha
EFI, HPDI and carbureted outboards."

The filters allow a flow rate of 90 gph at 10 microns, the catalog says.
That's much much higher than either my two two outboards dared to burn
at WOT.