Yes, I knew about if it was in gear - have that problem if I stall the bike ! But never knew about the diode- presumably it prevents current flow in one direction, and therefore isolates something to prevent starting ? Then guess it gets by-passed when clutch is pulled in.
I always start bike with clutch pulled in , as it takes the gearbox load off the starter motor - turns over a bit better in cold weather.
I always start bike with clutch pulled in , as it takes the gearbox load off the starter motor - turns over a bit better in cold weather.

