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Vent new hole marked. In order for the P-trap to fit under the side deck, the new 1-3/8" hole had to be as low as possible (of course while also encompassing the old 3/4" hole).
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Here you can see how it will fit on the inside. This black plastic bowl is just a spacer; it doesn't actually comprise the seal. There are three optional spacers that come with the vent - this is the largest one. I can't tell yet whether I'll want to use this one or the next smaller one, but I wanted to make sure this one would fit. It's close with the steering cable, but it does fit. The P-trap part goes inboard of this.
New vent set in place in new hole.
New 1-3/8" hole has superseded old 3/4" hole.
Vent new hole marked. In order for the P-trap to fit under the side deck, the new 1-3/8" hole had to be as low as possible (of course while also encompassing the old 3/4" hole).
1674 vent
Fuel vent original placement
I got the idea the website must be wrong because this non-P-trap-but-same-style Attwood flush fuel vent showed it taking a 1-3/8" hole, and plus it only made sense it would have to be a larger hole than the protruding vents.
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Vent new hole marked. In order for the P-trap to fit under the side deck, the new 1-3/8" hole had to be as low as possible (of course while also encompassing the old 3/4" hole).

  • Media owner Sunbeam
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Vent new hole marked. In order for the P-trap to fit under the side deck, the new 1-3/8" hole had to be as low as possible (of course while also encompassing the old 3/4" hole).
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Fuel-system related
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Upgraded cleats, port tank (not my boat in the photo).
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