Johnson and Evinrude outboards, use the model number, rather than the serial number, to determine the year model. Mercury outboards, uses serial number and horsepower.
Mercury Marine uses both the serial number, and the horsepower rating, to determine the year model of their outboards.
In addition to the serial number, which is listed here, the horsepower of the engine is needed, to determine the year model of Mercury outboards.
The "OC" model 75 hp Mercury outboards were manufactured in 1990.
In order to answer this question, the horsepower rating of the motor has to be known. Mercury outboards use the serial number, and horsepower, to determine year model.
Go to Marine Engine.com and click merc outboards then click mercs by serial number....al
The "OC" model 75 hp Mercury outboards were manufactured in 1990.
The older model mercury outboards, with maker points, should have a 0.020" gap setting.
The serial number and horsepower rating for the engine is compared to the Mercury outboard model year chart.
This question cannot be answered with a serial number alone. Mercury outboards determine year model by comparing the serial number, in a selected horsepower range, to a range of serial numbers, produced within each year of production.
Mercury outboards manufactured with the OG prefix, have the year model listed on the serial number tag. The OG models were produced from the mid to late 1990,s.
All you have to do is ask! Mercury outboards year model is determined by serial number range. Each model has a start, and ending serial number range, for each year of production. The serial number, along with the horsepower rating of the engine in question, is compared to a chart of serial number runs for each year. According to the chart, a 65 hp Mercury, serial number 7058505 would be a 1975 year model.