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Author Topic: Mercury Optimax 225 Air Compressor Replacement  (Read 69 times)

June 24, 2020, 06:56:17 PM
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j.white

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Mercury Optimax 225 Air Compressor Replacement
« on: June 24, 2020, 06:56:17 PM »
I need to replace the air compressor on my 2005 Mercury Optimax 225. I got the new compressor and it looks exactly like the old one except for 1 fitting. The "top" fitting on the crankcase side is not in the same location on the new one as the old one. To top that off, where the fitting should be is a threaded port. I counted and checked all of the fittings from the existing to the new and everything lines up except for that one.

The parts dealer ordered the part from Mercury using the motor serial number. I double checked the part number from the Mercury Catalog and it is also the same. So my questions are:
1) Is it possible that this is the wrong part?
2) If it is correct, what should go into that threaded fitting? Is it just an empty port?
1999 Aquasport Explorer 225 w/ 2005 Mercury Optimax 225

June 25, 2020, 08:04:13 AM
Reply #1

j.white

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Re: Mercury Optimax 225 Air Compressor Replacement
« Reply #1 on: June 25, 2020, 08:04:13 AM »
From what I could find out, the fitting has been moved.  Hooked everything up, primed the oil system and fired up the motor this morning.  Everything checks out and works as expected.
1999 Aquasport Explorer 225 w/ 2005 Mercury Optimax 225

June 25, 2020, 04:22:48 PM
Reply #2

RickK

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Re: Mercury Optimax 225 Air Compressor Replacement
« Reply #2 on: June 25, 2020, 04:22:48 PM »
Good, glad to hear you worked it out.
Rick
1971 "170" with 115 Johnson (Rebuilding it now)

1992 230 Explorer with 250 Yamaha