1999 Speedster Winterization

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That is the upper flush port, that is where you pour antifreeze into. Make sure you follow that line, there is probably a "T" and that will exit on the rear of the boat on the pump support mount. That is where I put the expansion plug vs. trying to clamp it. If not, all your antifreeze will just run out the back of the boat and never get into the engine.

Since you are pouring the anti-freeze into the flush port, do the engine has to be running? I would think that you don't need to run the engine since there is not a lot of pressure when you pour vs using a garden hose.
 
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