90 HP mariner outboard

Tracey · #1 (**permalink**) 08-10-2010, 04:25 AM

Hello, and thanks right off to bat!
I just purchased a used boat that came with a 90HP mariner engine.
Serial is OB276118, can you tell me the year and any pertinent info regarding this engine? Again, thank you.
Tracey

boats.net · #2 (**permalink**) 01-13-2011, 05:21 PM

It's a 1988 model number 7090412ND

boatmangc · #3 (**permalink**) 02-11-2011, 09:09 PM

Great motor.
replace the 21-42481 1 Check valve screwed into the fuel pump annually.
It is the achilles heel of this series of motors. It is what keeps oil flowing into the motor.
Boats.net should have them in stock