2008-2010 Kawasaki KFX450R Factory Service Manual, Page 34Get this manual
PERIODIC MAINTENANCE 2-15 Periodic Maintenance Procedures
Idle Speed Adjustment
Remove: Cover (see Side Cover Removal in the Frame Left Side
chapter) Start the engine and warm it up thoroughlyTurn the idle adjuster [A] until the idle speed is correctOpen and close the throttle few times to make sure that the idle speed is within the specified range