A 115 hp Mercury, serial number 6580904, is a 1984 year model.
The dry weight of a 1988 model, 115 hp Mercury outboard is 312 lbs.
Mercury outboard 115 hp, serial number 2931955, is a 1970 year model.
The 115 hp Mercury outboard, serial number OD049801 is a 1991 year model.
A 115 hp Mercury outboard, serial number OC238909, would be a 1990 year model.
The dry weight of an 1990 model, 115 Mercury outboard is 326 lbs.
The top speed of a Mercury 115 HP 1984 model straight 6 is about 45 miles per hour. This varies greatly with the type of propeller and the flatness of the water.
Set the gap at .035 in. for a 115 Mercury.
The 1978 model, 115 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
The 6479053 was 1984 Production 90 to 115 hp 6 cylinder Thanks to mercurymarine.com for the info.
For a 2 stroke model, a 500 to 650 cca, 12 volt starting battery will be sufficient. The recommended battery for a four stroke model is 1000 cca,
1984