Here's the Dell'orto UB carb in pieces after cleaning, so simple, so tiny
When I bought the bike the owner had a somewhat difficult time starting it... the first thing that came to mine was that it needed a valve adjustment and a points check. Didn't check the points yet, but I did adjust the valves. Spec is .002" (0.05mm) lash on both intake and exhaust, that's pretty damn tight. Exhaust was close, intake was too tight. I have to admit that I've been spoiled by boxer engines (the VW type 1 on the Thing and the type 247 on my BMW). It's so easy to access the valves and adjust, completely out of the way of everything in the open air. This little Italian had the front fender/wheel in the way and had the adjusters on the right side of the bike, but the rockers on the left, silliness... I was amazed how non-rusty everything was for a bike this old that mostly sat around.
Next thing to tackle was the generator which doesn't seem to be working, or at least not lighting up the instrument panel test. First thing to check was the bulb at the panel, good. Checked external wiring, good. Removed side cover to access generator... crap