Checking your Evinrude outboard motor’s oil level should be part of your maintenance routine. It takes only a moment and can help prevent expensive problems down the line. Start by pressing down on the handle at the rear of the engine cover. This will loosen the cover so you can remove it and set it aside.
Look on the starboard side of the engine block for a large ring, aka the dipstick. Pull the ring to remove the dipstick, and then wipe the dipstick clean with a rag. Insert the dipstick back into the tube, withdraw it, and examine the level of the oil. If the oil is below acceptable limits, add Evinrude 2 cycle oil XD100.