Outboard Motor Oil

After you’ve inspected the fuel line, move on to the fuel primer bulb and fuel line fittings. Lastly, check the tank vent to ensure the unit is aspirating properly and there isn’t any water in the fuel. Turn off the engine and the battery, and open the engine cover to check for any leaking fuel or water.

Lubricate all of the moving parts—the carburetor valves, shift and throttle cables, etc. Assuming you have a two-stroke engine, you’re going to need to mix the fuel with outboard motor oil before you refill the tank. Always be sure to use premium certified oil, such as Evinrude XD 100 oil. Once you’re finished, throw the cover on the engine to keep it safe during storage and transportation.