Need Help Determining Where Water Plug Goes

[cottle07]

Hey everyone, I recently bought a 2008 Air Nautique SV211 with the PCM 343 Excalibur engine and everything had been winterized. Drain Plugs were taken out and put in a plastic bag. The place where I took it to get serviced put all the plugs back in place except for one. He could not figure out where it went. He thinks it’s a spare part. I want to make sure first before I go into the water though. Can anyone tell me what this plug is and maybe where it goes so I can double check. Thank you.

[NautiqueJeff]

It is hard to judge size, but if it is very small, it might be the plug for the transmission cooler.

If nothing else, hook the boat up to the hose and see where water comes out.

[nyryan2001]

That looks like a drain plug from an exhaust manifold... or Maybe Vdriv/Transmission.

i wouldn’t sweat it... back it down the ramp on the trailer... start it on the trailer....if there’s an unplugged drain... you’ll see it within 30 seconds.

[cottle07]

You guys are awesome here on PN thank you!

[MTRBTR]

List of plugs:
1 on each manifold,
1 on each side of the block
one on the trans cooler.
one on the water pump way in the back. (Hard to see and get to)
Could be up to 2 of them on the v drive also.
Anyone feel free to mention any that I missed.

[H2O]

My two guesses would be: 1) "J" tube on serpentine belt end of engine 2) transmission cooler

[functionoverfashion]

Also, I'm not sure you want your boat worked on - winterized, in particular - by someone who can't find all the drain plugs on one of these. Just a thought.