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generally speaking if it has valves its a 4 stroke 4 cycle engine......if it doesnt have valves then it is a two stroke 2 cycle...................
1982 model
I have a 1984 90hp Mercury outboard and the fuel mixture is 50:1 which is one pint of 2 cycle motor oil for every 6 gallons of gas.
50 to,1
It is a 1965 model year Mercury 90HP.
Anywhere from 300-500 lbs.
Only the 3 cylinder models from 1987 and up
A 90hp Mercury outboard, serial number 6114748 is a 1982 year model.
It is a 1965 Model year 90hp
A 1987 Evinrude 90HP will weight around 120 pounds .G <a href="http://www.argoboat-ny.com"> Argo Boat </a>
im pretty sure its 50:1 but i would call a local mercury dealer just to make sure
The 3 cylinder model Mercury 90, uses a NGK BUHW-2, or Champion L78V. The 6 cylinder model, takes a NGK BUHW, or a Champion L76V.