hey bikers!

my name is pranjal
i am from bhopal
i own a yellow r15

my bike is around 3 months old

well, i do not have any trouble till now
but i want to ask one thing

when i got the bike around 15 days after my cousin asked me if he could ride the bike

i permitted him

he took the bike but he was unaware where the horn knob is located
(i.e the left hand side)

he was not knowing so he pressed the self knob (i.e on the right side) while the engine was already running

i want to ask you all
that does he damaged the self starter or the engine by doing that?
or yamaha guys have worked on it and it ensures safely and nothing is wrong?

after he came back after the ride i noticed that the battery was lil discharged


need your help guys

please!!!!