starter idler

So I finally got my new stator and regulator installed (OEM). Then the starter relay stuck and kept cranking. Fortunately I had air box off and tools near and disconnected battery quickly. Replaced the relay. All good. Rode it for a bout 100km, nice to enjoy my new machine. Then my son went...

Alright lads, I'm sure somebody here has changed the infamous starter idler gear. I have removed the POS starter and can feel a few teeth missing. What's the best and easiest way to get to it? THe manual is not the best, a few pics if anyone knows would be much appreciated. Since the night...