hi my mate has the same problem with his virago had been stood for a couple of weeks we looked i the manual 
shows you how to check it remove cranck case cover ect,ect  the clutch should only turn in one direction 
bike shop want near on £400 to do it  anyway to the point  there is a site called wemoto they do a starter clutch 
repair kit £25 (for the virago) you will need the manual the only specialist tool we had to get was a puller to take the flywheel off to get at it hope this helps and goodluck