definitely if you took off the oil hose into the carb and drained things out, remember to bleed that line. You don't want an air bubble in there that blocks your oil and causes a seizure (when you get it running).
Clean the carb first and see what happens. Those little carbs cause all kinds of problems and they can be really fussy sometimes. Clean out all the little holes in there with fine wire. I know, you probably did nothing but put in oil, but try it anyway. So often that fixes things.
Make sure you have a good fuel flow. If you don't have one already, get one of those cheap paper fuel filters. They'll help you go longer between cleanings.