Hey Guys,
Not new to bikes but I am new to the 4-Stroke Yamaha Twins.
I just drilled out the plug for the Idle-Air Screw and found the screw seated all the way. The Info here said to expect "1-3 turns from seated". Is it Normal to find them seated?
1982 XS650 Special II US Model
PS.... I couldn't find any ID Stamp on these Carbs, I know that's not normal.
It's possible your drill bit caught the screw head and spun it closed on that one side. The BS34 carbs like yours seem to like about 3 to 3.5 turns out.