Did you know that on the Honda CRF450...- The valve clearance of a Honda CRF450 should be checked and the piston replaced after 6 races or 15 hours of use.- The transmission and engine of a Honda CRF450 have separate oil compartments. Not Properly maintaining a modern four-stroke motorcycle such as the CRF450 can create an extremely expensive repair bill.- Riding your Honda CRF 450 is more fun than spending a bucket load of money fixing something you could have prevented with a little time and the right information. The Cyclepedia Press, LLC, Honda CRF450 digital motorcycle service manual features detailed full-color photographs and color wiring diagrams, complete specifications with step-by-step procedures performed and written by a veteran Honda dealer trained motorcycle technician. The Honda CRF 450R and CRF 450X digital motorcycle manual will show you how to repair and maintain the following Honda CRF 450 motorcycles:2002 Honda CRF450R2003 Honda CRF450R2004 Honda CRF450R2005 Honda CRF450R2006 Honda CRF450R2007 Honda CRF450R2008 Honda CRF450R2005 Honda CRF450X2006 Honda CRF450X2007 Honda CRF450X2008 Honda CRF450X2009 Honda CRF450X2012 Honda CRF450X