Mercury Mariner Outboard Motor Model Year Lookup Guide. Mercury did not publish model year information for 1997 & newer outboards. The year is now normally noted on the serial number sticker. NOTE: Mercury DOES NOT Use Model Years For Parts Lookup. This Chart Is For. Serial Number Search: Mercury Outboard Parts & Mercruiser Parts Location Serial Numbers. For Mercury Marine Outboards and Mercruiser Sterndrives are unique sets of numbers used to identify certain objects such as Marine Engines, Boats, Automobiles, Software, etc. In the case of Mercury Outboard Parts, Mercruiser Engine Parts, and Mercruiser Sterndrive parts it's the Serial Number.
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Identify the Force outboard using a model designation key. For example, model numbers '43F7A' and ' 903F90A' decode as follows: '4' and '90' identify the outboard's horsepower; in this case, 4-horsepower and 90-horsepower, respectively. The '3' in both examples refers to a long-leg outboard with no power trim, while the letter 'F' stands for Force. The '7' and '90' digits correspond to the year, with '7' indicating 1987 and '90' indicating 1990. The final position stands for any engineering changes made to the engine; in this case, 'A' identifies the outboard's first modification.