Water Separator

II Loose Screws

New Member
Apr 1, 2008
5
Forked River Beach
I am new to an I/O engine. My last boat had an Mercury Outboard and every year I changed the water separator. My questions:

Do I/O's have one?
Do they have to be changed every year?
Where are they located?

I have a 2006 Amberjack 270 with a
6.2 MPI Horizon Bravo III MCM


Any help would be appreciated
 
Yes you should have one.
Not a bad idea to change it every year. Make sure to relive the pressure on your fuel system prior to removing the filter.
Follow the fuel line and you should see it mounted. Looks like an oil filter somewhat
This is all lined out in your Merc manual
 
Thanks Weave appreciate it. I figured it would be in the manual, unfortunately its on the boat down that is in storage. Just sitting home getting spring fever and figuring out what I have to do.

Thanks again!
 
Ohhh yeah....Some tricks I have learned from the more experienced guys here is to:
Use a ziplock bag when removing it to catch any spilled fuel.
Fill the new filter with fresh fuel before installing it.
 
Ohhh yeah....Some tricks I have learned from the more experienced guys here is to:
Use a ziplock bag when removing it to catch any spilled fuel.
Fill the new filter with fresh fuel before installing it.


Excellent tips. Or when the mechanic is pulling the outdrive and putting in the new impeller have them change the fuel filter.
 
and if you don't? (like I did):smt017

Have you run it since? Some have reported problems getting flow through the filter without "priming" it I guess. My understanding is that it makes things a heck of a lot easier when starting after the change.
Imagine trying to prime roughly a pint of fuel into the filter....
 
My understanding is that it is not necessary to prime the fuel filter on the 5.0 MPI. When you turn the key to the engine, this charges the fuel pump to cycle on if pressure is low, and that will fill the filter anyway. Then you start it with the start button.
 
I may stand corrected then:thumbsup:. Just something I have always been told and never tried otherwise.
Don't want to hijack but,
While we are on this topic, What's the proper way of de-pressurizing the system before removing the filter? I know there is a valve but not quite sure how to do it properly even after reading the manual. :smt100
 
I have never poured fuel into the filter..... as I felt as I would be introducing unfiltered fuel to the system. I just click the ignition on a few times to run the fuel pump (MPI engines)
 
I too am new to i/o my last boat had a 175Johnson,I used a racor separater,I like that it separated to the bowl on the bottom and could also drain it from there,can I use this type on an I/o ??
 

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