Returning bike to stock ignition.

[5twins]

There are smaller master cylinders from other Yamahas available and that's a good way to go because your brake lever, brake light switch, and mirror will swap onto them.

 

[fiftynineab]

Everyone thanks for all your help and advice I will be continuing this thread in a new thread called 1979 XS650 F build.
https://www.xs650.com/threads/1979-xs650f-build.55286

Hope to see you there.