Speedo Drive 1972 500 K1

[Oddjob]

Odd thing is that Yamiya list that part for the 750K2-6 IIRC.

[AshimotoK0]

No worries Ken, i have done the same, i wonder if it was fitted to bikes after a certain year but without a part number mod as it was an "improvement" i must admit that i havent done much to those after about 76.
Bit like the mod from the first 750 with the turned over tabs and different chrome plate, i think there was a bulletin about that but not sure, i will have to find the book

They are on here Bryan in Dropbox Links 

CB750 SERVICE BULLETINS -- Collected over many years by Bryan Jones ... MASSIVE THANKS BRYAN

https://www.dropbox.com/s/xkkwyl5lteti976/CB750%20Service%20Bulletins.pdf?dl=0