Re: Gear oil and gas ratio on 85hp force outboard?
I have to plugs that take a flat head screw driver towards the top of the lower unit. One says "Fill" and one says "Vent". I also have one at the bottom-side of the lower unit behind the propeller, it doesn't have a level, there is also an alanscrew underneath the lower unit. I'm guessing this plug is the drain plug, but what is the one on the bottom-side? I unscrewed the bottom-side screw and oil came out, i haven't tried the alanscrew yet.<br /><br />How do you know when it is full? Is it when it is starts to run out of the "Fill" plug?