Hi there I have a 2006 YZ450F and I am having some trouble and was wondering if you could help me out with them. I just got the bike and am having multiple troubles with it...1) When you put the bike in gear for the first time of the day(clutch engaged) the bike stalls out, but you can fire the bike right back up and put it right back in gear and it works just fine what is going on here? 2)When you pull the clutch in a kick it into first gear it wants to creep forward on you(clutch still engaged) but only at idle as soon as you rev it up a little bit it quits that problem what is going on here? 3)When the bike is still cool you can shift through the gears no problem at all, but as soon as the bike starts to warm up after riding a few miles it gets harder and harder to shift in between gears what is going on here? We have changed the whole clutch assembly from the basket to the plates to anything that you can possibly change to remedy these problems and we are just wondering if we are missing something? Thank you VERY much in advance any and all help is appreciated!!!!!!!

1. normal. clutch plates stick after bike has been sitting.

2.not exactly normal . I can start my bike right now and rev it up it will surge forward with the clutch pulled in. why it does this in low rpm's only is the question . were any of the parts 14-20 on this diagram replaced or inspected.
5661


3.no real clue, it makes no sense. what oil are you using,what viscosity, and what brand of clutch are you running?
I guess if you have a clutch problem it could cause this. aslo if your trying to shift under a load and having a problem it can be normal, but in that case it should not be harder after the bike heats up.
I would inspect clutch plates make sure numbers are correct and look undamaged (fiber and metal)and the parts listed on the diagram(14-20) for proper function.