I am restoring a 1936 Elto Handitwin when I got it in a box and have put it together. When I had the gear case apart I didn’t put grease in. I have been working on it for 3 years because of a health problem, now I am at the point where I need to do that . I can’t remember which screw would be the vent, I would like to get the right one first and not break the paint on anything that isn’t the one to take out.
Thank in advance