I own a Hyosung GT250, it was purchased at bikebiz parramatta at the end of 2006. I and the owner before me have put 4000km on it, and its had a 1000km service. I obtained a quote from BikeBiz for a 4000km service, $300 + parts. Now from what I can tell a service at 4000km requires a oil change, change of oil and air filter and other minor safety checks. Considering I earn $20/hour this job seems more then worth my time. I have no experience with servicing bikes or cars, in fact I have never changed the oil on the car I drive (dad always does it). However I am fairly technically minded, learn quickly and I don't mind investing my time into learning how to service a bike. I just got a few questions, Should I attempted this myself? BikeBiz said If I service the bike it needs to be done by a Hyosung dealer or the warranty will be void. Will they know the bike was serviced? What are the chances I totally stuff things up, and the bike blows up and kills me and everyone around me.? How long would this take a noob like me to do?