Now you are getting the idea
,
We are a tricky bunch, After all these years anything could have been changed !,
Looks to me like you have an Alton alternator ?, Instead of an old Dynamo,
I have never fitted one , But seen those 2 bolts instead of 198 .
At first I thought you was talking about the thrower Roy said about,
Which should be behind the sprocket, With other stuff !!
I see ET 164 is on another page MO32 !!,
But some people could have left that stuff out because of oil leaking from the back of the Dynamo ?,
The engine should breath from the gap where the Dyn goes into the chain case,
But some of us have had bad oil leak and sealed it with silicon ??,
I have one bike that leaks and another that does not , Strange.