You don't say what year.....but if it's carbed..Looking down the throat, when the throttle is opened, you should see fuel sqirting. If not, accelerator pump does not work..rebuild or replace carb. Also, the choke shutter should be closed with some spring pressure and not open fully until the engine has warmed. As far as the 1500 rpm until it warms up, thats a normal start procedure for a carbed engine.
