Is that normal for a bike to lurch forward slightly when starter button is pressed? After the start it is fine and not trying to lurch until I release the clutch halfway. (Honda CRF450L I got used). Thanks!
TLDR: No, it’s not normal.
If you’re starting in gear with the clutch pulled, you should open the clutch and see if it’s notched. Also could be if the wrong oil is in it which can cause clutch drag, which isn’t good because that can cause clutch glazing.