Ethanol _Do Yamaha and Merc protect from it differently?

edwardh1

Petty Officer 2nd Class
Joined
Nov 26, 2003
Messages
137
Yamaha seems to say you MUST have a water seperating , 10 micron fuel filter. Yamaha dealers here say we dont sell a boat new or used without one.

The Merc Outboard site says something like: extra filters will restrict fuel flow and we have already protected the engine.

Do new Mecr outboards say 90, 115 HP have a 10 micron water separating filter under the motor cover?
 
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