HELP!!! What's this plug and where does it go?

[UWSkier]

New mechanic winterized the boat last fall and left every plug out and every hose unhooked. I've winterized several DD's before but never pulled this particular plug. It definitely threads into steel because there's rust inside it (it's hollow). It has to be a tranny or engine drain, but I can't find where it goes. I already put the knock sensor and petcock back in the block.

Edited May 29, 2010 by UWSkier

[tvano]

bring a wrench to fit and drop it in the pond.

crank it and put the plug where all the water is leaking.

looks like a block drain (under manifold) but you said you have installed the knock sensor and the petcock.

those are the only two locations that i can think of that would look like that.

[UWSkier]

Think I'm going to do that after dinner.

[Bobby Light]

Think I'm going to do that after dinner.

Looks like a rear drain plug to me.

[UWSkier]

Transmission cooler. Found it in the Indmar manual.

RTFM moment for me!

[JayHoy]

Looks like a exhaust manifold rear plug. Why do marina's seem to leave customer boats in need of a summerize service??????????????? I am a certified tech and we never do such a thing, where I work, if the engine is winterized with rv anti freeze there is not much to do in the spring other than install batteries and put the boat in the water

[CedarLakeSkier]

Looks like a rear drain plug to me.

[UWSkier]

Actually, it's the engine block plug opposite the knock sensor, but it fit the tranny cooler as they're the same thread pitch.

[Ndawg12]

Looks like a rear drain plug to me.

It might work but my transom plug doesn't look like that...

[areamike]

Actually, it's the engine block plug opposite the knock sensor, but it fit the tranny cooler as they're the same thread pitch.

[UWSkier]

That's also why it took me a while to find it. I've done Monsoons with heaters and showers lots of times. Never did one in a V drive though and without the shower. Slight delay, but we ended up getting it on the water that evening.