Ah the fond and terrified moments from youth.
My first machine was when I was 13 and a light bugger at that.
Naturally I picked a easy to start and ride machine,......,........Not.
It was the first big enduro machine from Honda the XL350 Elsinore, lots of trick stuff for its time. And a absolutely obstinate bastard to start.
I had seen it break a guys shin bone. It was scary, fortunately my lack of weight helped in managing the backfires.
But boy when it ran, it ran very hard indeed.