Hi Folks,
I have an BSA SS80 1964 with a 376/281 Monobloc carb, I have stripped the carb to recondition it and whilst looking at carb diagrams I have noticed that mine has no air valve or associated operating gear. Although there does appear to be a hole in the carb cap for an air valve control cable. Do you know if the air valves were fitted to all the carbs in this series? I am also not sure how the the air valve is operated, I think there is meant to be a valve leaver on the handle bar, but looking at poor quality photos on the internet of SS80's i'm not sure I can see one of these.
Can anyone shed any light on my missing air valve?
Thanks