2000 Mercury 225 EFI Leaky trim

[Cbj89]

Trim unit appears to be leaking out the bottom pin. Any idea what would cause this? Is there seals around the pin that can be replaced?

[JOE54]

there are orings on the crosshaft that connects center cylinder to manifold

[Cbj89]

I also posted on another Mercury forum page and one guy told me that once those o rings start leaking that the whole unit is junk. He says it’s not worth replacing o rings because they will just keep failing. Would you say that’s true? Or it’s it worth replacing?

[Cbj89]

Also any idea what kit would have those orings in it?

[massbays]

Salt water corrosion.
that is a very common repair I see @ the 12 yr or so mark.
problem is a stainless pin traveling thru an aluminum tilt cyl.
what happens is the cylinder o ring groove corrodes away and it won't hold the new o ring.
so you have to replace the entire tilt cyl and stainless shaft.
by the time you price out parts and labor your better off buying a new trim assy.

[EuropeanAM]

If you would, please take a moment to review the Announcements at the top of the Forum, and be sure to provide the Required Info (serial number) when posting. Thanks!

Massbays is referring to something that I sincerely doubt you are seeing in NEBRASKA on a freshwater bass-boat. It's not impossible, but it's very unlikely the case.

I reseal a dozen or so of these a year and only rarely do I pull one down and declare it "junk". If it's corroded to that extent it should be visually apparent.

The Repair Kit is usually what you need- and a pristine-clean work area. See Rhonda's post, pinned at the top of the Forum if you would like assistance with Parts (again, serial number is a must).

[JOE54]

^^^^^^ + 1 replaced several myself , some special tools are needed