Hello everyone, I am new to the forum. I recently got a great deal on an Evinrude Sportwinn 10hp. I am not sure of the year, the serial number is. This is my first outboard so I have ordered a manual, however, I was going to change the lower unit oil and the illustration I found online was misleading as to the location of the vent. On the opposite side of the drain plug is a screw that I removed thinking it was the vent. Turns out the screw had a pin on the end of it approx. 1/2" long. I cannot return this screw back because whatever the pin was on was spring loaded so I cannot line the hole back up. Ok, onto my question, if I remove the 6 bolts on the housing will this be a dificult job for me to fix? I am mechanically inclined, but this is also a marine engine. Thanks for your help everyone.