My bike, a 2008 yz450 is brand new with less than an hour on it. Everything is stock with a pipe on order. Maybe .4-.5 hours. It is crazy hard to start. Not that the kick starter is tough to push but I have to kick it for ever to start it. My hour meter has a full hour on it now from kicking. Thats about 30 minutes worth of kicking and a lot of sweat. I've searched on here for what others have done to get their bikes started and followed most. Most say the bike get easier to start as they get a few more hours. I'll list what I have done and what seems to work. 1) Checked the plug gap - even replaced it with a iridium plug. 2) Turned the pilot screw out to 2 1/4 turns from the stock 1 1/2 3) Drained and used brand new gas. 4) Tried using the choke. 5) Tried using the choke + hot start. 6) Tried no choke/no hot start. 7) Tried hot start only. 8) Tried a full twist of the throttle to prime the motor with all of the above. 9) All above with hand on brake master not to twist throttle while kicking. 10) Turned idle up(have since put it back to stock) Here is what I finally got to work with any consistency: Fuel on, Choke on, Throttle cracked(mostly just taking up the slack in the cables and basically a fast idle), get the kicker up against TDC and a smooth forceful kick. I also got the bike to start like this hot with all of the above but no choke with 2 kicks. So my question is why do I have to crack the throttle to get the bike to start when every thing I have ever read, been told,and shown says never to open the throttle on a four stroke to get it to start. This is driving me nuts and I am getting afraid something is wrong with my bike. I'll gladly provide more info if any one needs it. Thanks for all your help!