Timts:
If one exceeds the time limit, it is indicative of the starter not changing over (dropping off line) to a generator, and it may well burn out / catch fire because it is running too fast!
The caption is the deciding factor (starter caption dissappears /or Gen caption dissappears dependent on layout of panel.
DB: A popitt valve is one that cleans up after itself, as in:
There's a good poppitt.