1941 Neptune 2hp. Lower Unit Screw? Home › Forum › Ask A Member › 1941 Neptune 2hp. Lower Unit Screw? This topic has 0 replies, 1 voice, and was last updated 6 days, 12 hours ago by Wetfeet. Viewing 1 post (of 1 total) WetfeetReplies: 1Topics: 1 September 19, 2023 at 1:55 pm #280773 Right above the bearing carrier screw in the picture is another screw. It’s long and fine thread, seated deeply. What the heck is it for? I removed it thinking it may be the upper plug for filling the unit with 00 grease. It’s not. Did I screw up? Tom Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In