MEDINA, Minn —Snowmobile manufacturer Polaris sold its stake in the struggling Indian motorcycle company to a Los Angeles investor group. Indian motorcycles have accounted for 7% of Minnesota-based Polaris’ revenue. Indians are designed in Switzerland and manufactured in Monticello, Minnesota, and Spirit Lake, Iowa. Mike Speetzen, chief executive at Polaris, said the deal allows Polaris to focus on its primary business— snowmobiles, watercraft, four-wheelers and its helicopter-transportable Drago combat vehicles. Polaris has 1,500 employees at its primary plant in Rouseau in northern Minnesota.