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Old 17 April 2012, 20:34   #1
wenojardo's Avatar
Country: Other
Town: kailua kona
Boat name: rubber made
Make: achilles
Length: 3m +
Engine: outboard
Join Date: Apr 2012
Posts: 26
need engine specs

hi i just bought a used 1991 25hp mercury outboard and I needed some specs on it such as what type of gear oil to use and where i can get parts locally. Is there a manually on site i can reference for the specs and i repair manual would be helpful. Thanks

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Old 18 April 2012, 01:27   #2
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,618
Have you looked in your phone book for boating supply shops? Chandlers?

Don't remember seeing any when I was in Kona, but there's enough boats there that there has to be at least one, probably a few. Barring that, you can probably get away with using automotive 90wt hypoid gear oil (differential fluid.) Marine stuff would be better, as it contains a bit more anti-corrosion stuff (at least that's what's rumored.)

A Google search for your Merc model and year (and 2/4 stroke) will get you a few places that will sell you a download of the owners manual and/or service manual. You can also get them through the Mercury Marine website (but have deep pockets.)


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Old 19 April 2012, 03:21   #3
Country: UK - England
Town: bicester
Length: no boat
Engine: outboard only
Join Date: Feb 2009
Posts: 851
most owners h/books can be downloaded from the brunswickmarine web sit , see past posts on how to do it, if you want a factory service manual like i used to use then with your s/n go to either a merc or a mar dealer .
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