Winterize EX 343 Questions

[Guntersville230]

Has anyone winterized the 343 themselves and/or have photos/suggestions. I am a good ways away from my dealer and need to do it myself. I have previously winterized all our other nautique boats, but since this will be my first time on a our 2015 SAN 230 just wondered if there were any quirks or unique things to be aware of. Its an open cooled system with no heater.

[swatguy]

You need a big crescent wrench fit the manifold plugs. It's pretty straight forward. Your manual has a great diagram of exactly where all the plugs are in the engine. Just don't forget the ballast system.

[NautiqueJeff]

Here you go.

[Guntersville230]

Thanks guys!

[toomuchuv]

The diagram is a little vague when it comes to #1 (knock sensors). Just make sure you take the WHOLE thing out and not just the bolt that holds the sensor in place. I believe you need a 1" or 1-1/16" wrench. I also take the water and ballast pumps apart to inspect/change the impellers.

[Guntersville230]

I wasn't really certain what to do there (knock sensors) so thanks for the clarification!

[Paxdad]

If you do not have a CAT motor there is a small plug in the port side bottom of the fiberglass muffler. I always pull this plug and verify that there is no water in the muffler.

[scottb7]

I have never heard that there is a need to drain the muffler. Do you have any documentation that indicates the necessity? Or just doing for fun of it? I think there is plenty of room for expansion of any water in it.

[Paxdad]

It must be for fun.......

[jhiestand]

I've just gotten to the draining aspect of winterizing my "new to me" 343 and can't figure out how to get the knock sensor plug off in order to get a wrench on the sensor. Looks like there's a gray lock that maybe needs to be pushed in before the plug can be pulled off, but it doesn't seem to want to budge. Am I missing something, here?

[core-rider]

I've just gotten to the draining aspect of winterizing my "new to me" 343 and can't figure out how to get the knock sensor plug off in order to get a wrench on the sensor. Looks like there's a gray lock that maybe needs to be pushed in before the plug can be pulled off, but it doesn't seem to want to budge. Am I missing something, here?

It's kind of like "child-proof caps" on some bottles... 2 sides are a bit wider, squeeze those 2 sides and it will pull off.