To check the oil in a 2001 Mercury 90hp 4-stroke engine, first, ensure the engine is level and turned off. Remove the dipstick, wipe it clean, then reinsert it fully without screwing it in and remove it again to check the oil level. The oil should be within the marked range on the dipstick. If necessary, add the appropriate oil type to reach the correct level.
For a 90hp Mercury two-stroke outboard, you should use a high-quality lower unit gear lube specifically designed for outboard motors. Mercury recommends using their own brand of gear lube, such as Mercury High-Performance Gear Lube or Quicksilver Gear Lube, which offer excellent protection against wear and corrosion. Always check the owner's manual for specific recommendations regarding viscosity and any additional requirements.
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...................
There are various models of Mercury 90hp engines with different compression ratios. Typically, compression ratios for a 90hp Mercury outboard engine range from 9:1 to 10:1. It's best to consult the specific model's technical specifications for accurate compression ratio information.
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>