While the two-stroke engine has fallen out of favor, it does boast one distinct advantage over its four-stroke successor: you don’t have to change the outboard motor oil. Sure, you have to mix the oil with gasoline consistently, but changing your oil can be a hassle. And if you neglect to do it, you can cause serious damage to your engine. You don’t have to worry if you have a four-stroke, however; changing your outboard motor oil is simple:
~Take the boat out of the water and put it on a trailer
~Remove the engine cover
~Check the oil using the dipstick in the crankcase
~Use the trim button to raise the motor, allowing the oil to drain out from the crankcase easily
~Drain the oil into an empty container. Take out the drain plug to allow all the oil to draw off.
~Replace the drain plug and refill the oil until it reaches the full level