I recently bought a 2003 YZF 600R. The bike is in great condition and has been running very well. There have been a few times when I start it up in neutral and it idles around 1000rpms and then cuts off, even if i try and give it gas. When this has happened I have turned the choke on and then it is fine but i thought i didnt have to use the choke unless it is cold or the bike has sat for numerous days. Just wondering what the problem is. This is my first bike after taking the MSF course so I would not be suprised if it is something simple im missing. I dont have the owners manual either. Thanks.

Most carbureted bikes will require the choke when first started. On a warm day 15-30 seconds is usually enough.