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:
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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