If you're still under warranty then just take it back to the dealer. If charging the battery doesn't help there is a company down here in Pompano Beach,FL that can rebuild your starter cheap. I've used them for both cars and bikes with great results. Startech 954-943-1200. Hope that helps. And welcome to the site!
Steelheart- '03 Speedmaster Black/Yellow
The Hayabusa Killa
16" Shorties/140 mains/Airbox drilled
Procom CDI
"There is no cure for Celibacy. But we can treat the symptoms."