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Water Lines Clean Out

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Deadeye

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If you have a Mercury Optimax, and probably a lot of other outboards, near the top where the “pee” stream comes out there is a Plug.

Unscrew that plug and screw into where it was a garden water hose.

What this does is run water Backwards through the entire system flushing out any bits and pieces that get stuck in there causing low water flow.

I turned the water on into mine and I could hear the water working it’s way through.

The stream went from this:




To this:




It also cleaned out the lower pickup ports so that the water flowed strong through them.





Just a quick and easy way to clean out your motor. Especially important if you fish in grassy or sandy/dirty water.


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Eternal Optimism. It's what drives me to fish. Next cast is THE cast that will provide the reason why I am here. Big Bass, Small Bass, No Bass-- Everyday and Every Time out learn something. What worked and what didn't and why. In the end go enough days and then, Today is the day that it will all come together and the Fish Gods will smile.


Oldfart9999

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Good reminder with pictures Fred!!!
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geneinnc

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There is a chance I get my new repower 150 today. I normally read the manual but I will see if Tohatsu/Honda has that option.

Good tip!

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Bassinkorea

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If you have a Mercury Optimax, and probably a lot of other outboards, near the top where the “pee” stream comes out there is a Plug.

Unscrew that plug and screw into where it was a garden water hose.

I too have an Optimax with a weak pee stream compared to others.
How are you attaching the water hose to the motor, I just can't see in the photos?
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FD

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@BK

There is a screw cap you remove to connect the hose.

Also if you take your left lower housing of there is a water filter that is not replaced during a normal Mercury service.  Its a pain to get to but the time spent is worth it. 

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Bassinkorea

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Thanks FD, I'll check it out next weekend when I get over to the boat.
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Deadeye

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If you have a Mercury Optimax, and probably a lot of other outboards, near the top where the “pee” stream comes out there is a Plug.

Unscrew that plug and screw into where it was a garden water hose.

I too have an Optimax with a weak pee stream compared to others.
How are you attaching the water hose to the motor, I just can't see in the photos?
Right beside the Pee Hole is a plastic plug. I use a crescent wrench to remove and replace mine. It has a Square Head on it.

FD is correct there is another water filter (a screen) that is located on the left side of the motor facing forward.
A zip tie holds the hose on, then once the hose is removed the part that holds the screen screws off.

As to how I screw the hose on to back flush, I reverse twist the hose several times then put it on the opening. That helps to allow you to twist the hose on.


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Eternal Optimism. It's what drives me to fish. Next cast is THE cast that will provide the reason why I am here. Big Bass, Small Bass, No Bass-- Everyday and Every Time out learn something. What worked and what didn't and why. In the end go enough days and then, Today is the day that it will all come together and the Fish Gods will smile.

Bassinkorea

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Thanks Fred  ~shade
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