Zodiac (Yam labelled) floor drain.

[hobnob]

I have a Yam 3.1 made by Zodiac. At the base of the transom it has a small level which pushes a plunger in and out, allowing the boat underfloor to drain when on the plane.

Problem is that the plunger is not sealing; the boat is leaking water badly through this contraption. I've disassembled and there are no obvious faults other than slight flimsy construction.

Any ideas?

[MeMe]

I have a YAM 380, whilst it does not have the drain you describe with a "lever" it has the exhaust port / drain in the same poition. Mine has a bung which simply pushes into the hole on the outside of the transom. It's attacched with a string - so simple resolution, but a bung or jury rig somethingfrom the outide where both a tight sealing bung an water pressure will aid your issue.

[jyasaki]

As I recall, (from borrowing a friends Zodiac) the standard Zodiac flapper valve drains didn't do a great job of sealing out water, either. Not limited to Zodiac; my Achilles had to have the plugs in unless I was trying to drain accumulated water.

jky

[hobnob]

Thanks guys - will look for a large bung, and curse the French for making it that way. Might also experiment with plumber's putty - will let you know here.

[m chappelow]

some of the rubber bungs used in wine /beer making fit some zodiacs,

[prairie tuber]

The little rubber valve flaps should be relatively inexpensive from the zodiac dealer ~ $ 3.oo . It's worthwhile buying several, since they are only good for a season or two. They are probably the only original zodiac replacement part or accessory that costs less than an arm and a leg.

Also be sure to check the valves now and again to ensure there is no seaweed or other crud lodged in the valves holding the flaps open. If you venture out into good sized waves or run whitewater rivers, large scuppers with elephant trunks become very important.